UI: replace Lucide icons with Papicons

Swap the inline SVG icons of the web UI (top bar, view mode, time range, export, close, empty state, back to top, settings tabs, save, delete, lock) for their Papicons equivalents (MIT, Association Papillon). Papicons are filled shapes: they carry class "pi", which sets fill: currentColor and no stroke, so the stroked Lucide icons that stay (zoom out, Docker badge) are unaffected. Add THIRD_PARTY_NOTICES.md with the Papicons MIT notice and a pointer from both READMEs. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
UI files: ETag and revalidation on each load
2026-11-01 20:03:15 +01:00 · 2026-11-01 16:11:41 +01:00 · 2026-11-01 16:03:24 +01:00 · 2026-11-01 16:00:05 +01:00 · 2026-11-01 15:52:42 +01:00 · 2026-11-01 15:47:57 +01:00
25 changed files with 4304 additions and 178 deletions
@@ -1,6 +1,6 @@
 # Copy this file to .env and adjust it.
-SYSLOG_PORT=514
-HTTP_PORT=8080
+SYSLOG_PORT=5514
+HTTP_PORT=8989
 TZ=Europe/Paris
 # How long logs are kept (e.g. 7d, 30d, 12w, 1y)
 RETENTION=30d
@@ -67,3 +67,7 @@ DMESG_BACKFILL=1h
 AUDIT_BACKFILL=1h
 # Host name of the audit events (empty: node= of the records, else /host/etc/hostname, else localhost)
 AUDIT_HOST=
+# Log files of other programs (Traefik, nginx, applications…), declared in Settings > Log sources >
+# Log files: mount their directory read-only in docker-compose.yml (e.g. /var/log/traefik:/logs/traefik:ro).
+# History read when a file is turned on (e.g. 30m, 1h, 24h; 0 = only new lines)
+FILES_BACKFILL=1h
@@ -92,6 +92,10 @@ une base propre.
 Les badges de sévérité `err`/`crit` et `warning` reprennent les couleurs des tags `error` et
 `warning`.

+Chaque ligne commence par un badge de largeur fixe qui indique sa source, avec une couleur par
+source : **SYSLOG**, **DOCKER**, **KERNEL** (dmesg), **HOST** (fichiers de `/var/log`), **AUDIT**,
+**FILE** et **LS** (logs de LogStream lui-même).
+
 Raccourcis : `/` place le curseur dans la recherche, `Esc` la vide. Un clic sur une ligne
 affiche tous ses champs.

@@ -278,7 +282,7 @@ source est **désactivée par défaut** : activez-la dans **Réglages > Sources
  ne peut pas être résolu), `exe`, `res` (`success` / `failed`, d'après `res=` ou `success=`) et
  `key` (clé de la règle). La sévérité est `warning` en cas d'échec, `info` sinon ; facility
  `authpriv` ; source `audit`. Dans la liste, les lignes d'audit ont un liseré gauche violet,
-  un fond légèrement teinté et un badge **AUDIT** devant l'app ; le filtre **Source** permet de
+  un fond légèrement teinté et le badge de source **AUDIT** ; le filtre **Source** permet de
  les afficher seules.
 - **Noms** : `user` vient du format enrichi (`log_format = ENRICHED`, le défaut des versions
  récentes d'auditd), sinon du `/etc/passwd` de l'hôte s'il est monté en `/host/etc/passwd`.
@@ -289,10 +293,71 @@ source est **désactivée par défaut** : activez-la dans **Réglages > Sources
  enregistrés dans `/data/audit-state.json` : après un redémarrage, la lecture reprend là ;
  après une rotation par auditd, la fin de `audit.log.1` est lue avant le nouveau fichier.

+## Fichiers de logs (Traefik, nginx, applications…)
+
+Logstream peut suivre les fichiers de logs d'autres programmes : Traefik, nginx, Apache, ou
+toute application qui écrit dans un fichier. Déclarez chaque fichier dans **Paramètres > Sources
+de logs > Fichiers de logs** (enregistré dans `/data/files.json`, 50 au plus) : un **nom** (l'**app**
+de ses entrées, par défaut le nom du fichier), le **chemin** du fichier tel que monté dans le
+conteneur, un **format** (*Automatique* par défaut), un **hôte** facultatif (par défaut
+`/host/etc/hostname`, sinon `localhost`) et un interrupteur.
+
+- **Montage** du dossier en lecture seule, par ex. dans `docker-compose.yml` :
+  `- /var/log/traefik:/logs/traefik:ro`, puis `docker compose up -d`. Les fichiers de `/var/log`
+  sont déjà accessibles sous `/host/var/log/…`. Les fichiers doivent être lisibles par l'UID
+  `10001` ou le groupe de `HOST_LOGS_GID` (`adm` par défaut) ; Paramètres > Sources de logs
+  indique quand aucun fichier ne correspond ou que l'accès est refusé.
+- **Chemin** : un fichier, par ex. `/logs/traefik/access.log` (pas de jokers). Dès la saisie, le
+  fichier est vérifié : trouvé ou non, lisible ou non, son format détecté et sa dernière ligne.
+- **Détection du format** (*Automatique*) : à partir des dernières lignes du fichier (50 au
+  plus), le format structuré que suivent au moins 80 % d'entre elles — accès Traefik JSON, JSON
+  lines, journal d'accès CLF, logfmt — sinon texte brut. Elle est refaite quand le format est
+  changé ; le format trouvé s'affiche dans l'état du fichier. Choisissez un autre format pour
+  le forcer (une expression régulière n'est jamais détectée).
+- **Formats** :
+  - *Texte brut* : une entrée par ligne ; le niveau est détecté comme pour les logs Docker, un
+    horodatage en début de ligne (ISO 8601, `2006/01/02 15:04:05`, `[02/Jan/2006:15:04:05 +0200]`,
+    `Jan  2 15:04:05`) devient l'heure du message et est retiré du message. Les lignes indentées
+    (stack traces) sont rattachées à l'entrée précédente.
+  - *JSON lines* : `msg` / `message`, `time` / `ts` / `@timestamp` (texte ou heure Unix) et
+    `level` (mot ou nombre, pino/bunyan compris) sont reconnus ; les autres clés deviennent des
+    champs, les objets imbriqués avec des noms pointés (`req.id`).
+  - *logfmt* : paires `clé=valeur`, comme les logs par défaut de Traefik ou des programmes Go ;
+    mêmes clés que le JSON.
+  - *Journal d'accès (CLF)* : Common / Combined Log Format de nginx et Apache, et le journal
+    d'accès de Traefik dans ce format (routeur, URL du serveur et durée compris). Champs
+    `client_ip`, `http_method`, `http_path`, `http_status`, `http_size`, `user_agent`,
+    `http_referer`, `router`, `backend`, `duration_ms`.
+  - *Accès Traefik (JSON)* : le journal d'accès JSON de Traefik (`accessLog.format: json`),
+    résumé en `GET app.example.com/ 200 · 12.5 ms · app@docker · 203.0.113.9`, toutes les clés
+    dans les champs. Les logs de Traefik lui-même dans le même fichier sont lus comme du JSON.
+  - *Expression régulière* (syntaxe RE2 / Go) : les groupes nommés `time`, `level`, `msg`,
+    `host` et `app` remplissent ces champs, `status` donne le niveau d'un journal d'accès, les
+    autres groupes deviennent des champs, par ex.
+    `^(?P<time>\S+ \S+) \[(?P<level>\w+)\] (?P<module>\S+): (?P<msg>.*)$`. Une ligne qui ne
+    correspond pas est rattachée à l'entrée précédente.
+
+  Pour les journaux d'accès, les statuts 5xx sont en `err`, les 4xx en `warning`, les autres en
+  `info`. Une ligne qui ne suit pas le format choisi est gardée comme du texte brut. Les champs
+  qui portent le nom d'un champ de LogStream (`host`, `app`…) sont renommés `field_host`,
+  `field_app`…
+- **Affichage** : source `file`, le chemin dans `log_file`. Dans la liste, ces lignes ont un
+  liseré gauche vert, une légère teinte et le badge de source **FILE** ; le filtre **Source**
+  les affiche seules.
+- À l'activation d'un fichier, les lignes de la dernière heure déjà présentes sont lues d'abord
+  (`FILES_BACKFILL`, `0` = seulement les nouvelles lignes ; les lignes sans horodatage sont alors
+  ignorées). Le début de cette heure est trouvé par dichotomie sur les dates des lignes : un gros
+  fichier qui contient des mois de logs n'est pas relu depuis son début ; un fichier créé ensuite
+  est lu depuis son début, jusqu'à 64 Mo par seconde, l'état indiquant ce qu'il reste à lire. L'inode et une
+  position sont enregistrés par fichier dans `/data/files-state.json` : après un redémarrage la
+  lecture reprend là ; après une rotation (`access.log` renommé `access.log.1`), la fin de
+  l'ancien fichier est lue avant le nouveau ; un fichier vidé sur place (`copytruncate`) est
+  relu depuis son début.
+
 ## Logs internes de LogStream

 Logstream enregistre ses propres événements comme des logs, avec l'**hôte** `logstream`,
-l'**app** du composant (`store`, `syslog`, `docker`, `host`, `dmesg`, `audit`, `main`) et la
+l'**app** du composant (`store`, `syslog`, `docker`, `host`, `dmesg`, `audit`, `files`, `main`) et la
 source `logstream` : VictoriaLogs injoignable puis de retour, lots perdus, lots refusés depuis
 le tampon disque, erreurs du listener syslog, API Docker ou flux d'un conteneur décrochés,
 sources qui ne peuvent pas lire, démarrage et arrêt. Ils sont actifs par défaut à partir du
@@ -325,10 +390,88 @@ charge (pas de `| pipes`).

 En ligne de commande : `curl -o logs.csv 'localhost:8080/api/export.csv?q=error&range=24h&tz=Europe/Paris'`.

+## API de lecture (n8n, scripts)
+
+`GET /api/v1/logs` renvoie les logs stockés qui suivent un curseur, du plus ancien au plus
+récent : un outil appelé à intervalle régulier (n8n, un script, un connecteur SIEM) reçoit ainsi
+chaque nouveau log une fois, sans trou ni doublon, même quand beaucoup de logs ont le même
+horodatage.
+
+L'accès passe par un **jeton d'API**, créé dans *Paramètres > API* par un administrateur et
+envoyé dans `Authorization: Bearer lst_…`. Un jeton est en lecture seule et n'ouvre que
+`/api/v1/` ; il fonctionne quel que soit le mode d'[authentification](#authentification)
+(`local`, `oidc` ou aucune). Il n'est affiché qu'une fois, à sa création : LogStream n'en garde
+que l'empreinte SHA-256, dans `/data/api_tokens.json`. Le révoquer (puis Valider) coupe l'accès immédiatement ;
+la liste indique quand et d'où chaque jeton a servi pour la dernière fois. Une session ouverte
+dans le navigateur peut aussi appeler la route.
+
+| Paramètre | Rôle |
+|---|---|
+| `query` | filtre LogsQL (par défaut `*`), par exemple `severity:in(err,crit) app:sshd`. Les pipes (`\| ...`) sont refusés. |
+| `since` | point de départ : le `next_cursor` de la réponse précédente, une date RFC 3339 (`2026-11-01T08:00:00Z`) ou une durée avant maintenant (`15m`, `6h`, `7d`). Par défaut : `1h`. |
+| `limit` | lignes par réponse, de 1 à 10 000 (1 000 par défaut). |
+| `lag` | seuls les logs reçus depuis au moins cette durée sont renvoyés (`30s` par défaut, `1h` au plus), pour ne pas sauter les logs encore dans la file ou en attente de leur nom DNS. |
+
+```json
+{
+  "rows": [{"_time": "2026-11-01T14:02:11.52Z", "_msg": "…", "host": "fw01", "app": "sshd", "severity": "err", …}],
+  "next_cursor": "eyJ0IjoiMjAyNi0xMS0wMVQxNDowMjoxMS41MjAwMDAwMDFaIiwicSI6IjJlYjE4YzNhIn0",
+  "has_more": false,
+  "until": "2026-11-01T14:05:30.1Z"
+}
+```
+
+Les lignes contiennent les champs stockés (comme la vue JSON de l'interface), triées par
+`_time`, l'heure de réception. Renvoyez toujours `next_cursor`, même quand `rows` est vide.
+`has_more: true` signifie que d'autres logs sont prêts : rappelez tout de suite.
+`waiting: true` signifie que des logs du [tampon disque](#configuration) sont encore en cours
+d'envoi à VictoriaLogs : rien n'est renvoyé tant qu'ils ne sont pas stockés, pour n'en manquer
+aucun. Le curseur est lié à sa `query` : changer la requête garde la position dans le temps. Les
+erreurs arrivent sous la forme `{"error", "code"}` avec le statut 400 (paramètre ou LogsQL
+invalide), 401 (jeton invalide ou révoqué) ou 502 (VictoriaLogs injoignable).
+
+```bash
+curl -H "Authorization: Bearer lst_…" \
+  "https://logs.example.org/api/v1/logs?query=severity:err&since=15m&limit=1000"
+```
+
+### Exemple : workflow n8n
+
+Quatre nœuds, le curseur gardé dans les données statiques du workflow d'une exécution à l'autre :
+
+1. **Schedule Trigger** : toutes les minutes.
+2. **Code** (*Run Once for All Items*), lit le curseur :
+   ```js
+   const data = $getWorkflowStaticData('global');
+   return [{ json: { since: data.cursor || '15m' } }];
+   ```
+3. **HTTP Request** : méthode `GET`, URL `https://logs.example.org/api/v1/logs`.
+   *Authentication* : Generic Credential Type > Header Auth, avec le nom `Authorization` et la
+   valeur `Bearer lst_…`. *Send Query Parameters* : `query` = `severity:in(emerg,alert,crit,err)`,
+   `since` = `{{ $json.since }}`, `limit` = `1000`.
+4. **Code** (*Run Once for All Items*), enregistre le curseur et fait de chaque log un item :
+   ```js
+   const data = $getWorkflowStaticData('global');
+   const page = $input.first().json;
+   data.cursor = page.next_cursor;
+   return page.rows.map((row) => ({ json: row }));
+   ```
+
+Branchez ensuite ce que les logs doivent alimenter (Slack, mail, ticket, base de données…). n8n ne
+garde les données statiques que pour les exécutions du workflow actif, pas pour les tests
+manuels : pendant les essais, chaque exécution repart de `15m`. Au-delà de 1 000 logs par minute,
+`has_more` vaut true et les exécutions suivantes rattrapent le retard ; augmentez `limit` ou la
+fréquence du déclencheur si besoin.
+
 ## Paramètres

-L'icône en forme d'engrenage ouvre les paramètres, organisés en onglets. Tout, sauf les tags de
-couleur, est mémorisé par navigateur.
+L'icône en forme d'engrenage ouvre les paramètres, organisés en onglets. Les modifications
+s'affichent tout de suite mais ne sont conservées qu'avec le bouton **Valider**, sous les libellés
+des onglets : il prend la couleur d'accent tant que des modifications sont en attente. **Annuler**
+revient aux paramètres enregistrés, et fermer la fenêtre avec des modifications non validées
+demande confirmation avant de les abandonner. Localisation et Affichage sont mémorisés par
+navigateur ; les tags de couleur et les sources de logs sont enregistrés sur le serveur. La purge
+et la réinitialisation des colonnes agissent immédiatement.

 - **Localisation et langue**
  - *Langue* : anglais ou français.
@@ -382,6 +525,11 @@ couleur, est mémorisé par navigateur.
  désactivée par défaut : mettez `ALLOW_PURGE=true` pour l'autoriser. Tout administrateur peut
  alors purger : activez l'[authentification](#authentification) si l'interface est accessible
  à d'autres.
+- **API** : jetons de l'[API de lecture](#api-de-lecture-n8n-scripts) : en ajouter un avec un
+  nom, en révoquer un, voir quand et d'où chacun a servi pour la dernière fois. Ajouts et
+  révocations attendent **Valider** comme les autres réglages (**Annuler** les abandonne). Après
+  Valider, chaque nouveau jeton est affiché une seule fois avec un bouton Copier, et l'exemple
+  curl en dessous l'utilise, surligné, avec son propre bouton Copier. Réservé aux administrateurs.

 ## Authentification

@@ -503,6 +651,7 @@ résolutions.
 | `AUDIT_LOG` | `/var/log/audit/audit.log` | chemin par défaut du journal d'audit Linux (modifiable dans Réglages > Sources) |
 | `AUDIT_BACKFILL` | `1h` | historique lu à l'activation de la source « audit Linux » |
 | `AUDIT_HOST` | vide | nom d'hôte des événements d'audit quand les enregistrements n'ont pas de `node=` |
+| `FILES_BACKFILL` | `1h` | historique lu à l'activation d'un fichier de logs (Paramètres > Sources de logs > Fichiers de logs) |
 | `TZ` | `Europe/Paris` | fuseau horaire des horodatages RFC 3164 (qui n'en portent pas) |
 | `BATCH_SIZE`, `FLUSH_MS`, `QUEUE_SIZE` | `1000`, `1000`, `100000` | réglage de l'ingestion |
 | `SPOOL_MAX_MB` | `1024` | taille du tampon disque des lots refusés par VictoriaLogs (`0` = pas de tampon : 15 s de tentatives, puis perte) |
@@ -560,15 +709,19 @@ Pour mettre à jour l'une d'elles :
 | `hub.go` | envoie les nouveaux messages aux navigateurs (SSE) |
 | `rdns.go` | résolutions DNS inverses avec cache |
 | `export.go` | export CSV en flux |
+| `logsapi.go` | API de lecture `/api/v1/logs` : curseur, groupes de logs de même heure |
+| `apitokens.go` | jetons d'API : stockage (haché), contrôle Bearer, `/api/tokens` |
 | `docker.go` | logs des conteneurs Docker (API, lecteurs, positions, détection du niveau) |
 | `syslogserver.go` | écoutes syslog ouvertes et fermées depuis Paramètres > Sources de logs |
 | `hostlogs.go`, `journal.go` | logs système de l'hôte : lecteur du journal systemd (sans `journalctl`) et suivi de `/var/log` |
 | `dmesg.go` | messages du noyau : lecture de `/dev/kmsg`, analyse des enregistrements, position par identifiant de démarrage et numéro de séquence |
 | `audit.go` | audit Linux : suivi de `audit.log` (rotation, position enregistrée), analyse des enregistrements, regroupement par événement, résumé |
+| `filesource.go`, `fileformats.go` | fichiers de logs : suivi (rotation, positions enregistrées, lignes de suite) et formats (détection, texte, JSON, logfmt, CLF, Traefik, expression régulière) |
 | `selflog.go` | logs internes de LogStream : `logEvent`, niveau minimal, limitation des répétitions, file bornée |
 | `tags.go` | stockage des tags de couleur |
 | `presets.go`, `presets.json` | préréglages de tags (`/api/presets`), liste intégrée |
 | `api.go` | routes HTTP `/api/*` |
+| `static.go` | fichiers de l'interface embarqués : ETag par fichier, revérifiés à chaque chargement (`no-cache`, 304 s'ils n'ont pas changé) pour toujours prendre une mise à jour ; polices en cache 30 jours |
 | `web/` | interface (HTML, CSS, JavaScript simple, sans étape de build), embarquée dans le binaire ; les traductions sont dans `web/app.js` (`I18N`), et dans `web/login.html` pour la page de connexion |

 ## Remarque
@@ -576,3 +729,8 @@ Pour mettre à jour l'une d'elles :
 Avec Docker Desktop (macOS/Windows), l'IP source vue par le conteneur pour les paquets UDP est
 la passerelle Docker. Le champ `host` vient toujours de l'en-tête syslog, qui porte normalement
 le vrai nom de l'émetteur.
+
+## Composants tiers
+
+Les icônes de l'interface viennent de [Papicons](https://github.com/PapillonApp/papicons) (MIT) et, pour quelques-unes,
+de [Lucide](https://lucide.dev) (ISC). Licences et notices : [THIRD_PARTY_NOTICES.md](THIRD_PARTY_NOTICES.md).
@@ -83,6 +83,9 @@ versions before this change are indexed by their message timestamp; purge them f
 Settings to start clean.

 Severity badges `err`/`crit` and `warning` use the colors of the `error` and `warning` tags.
+Each row starts with a fixed-width badge naming its source, one color per source: **SYSLOG**,
+**DOCKER**, **KERNEL** (dmesg), **HOST** (files of `/var/log`), **AUDIT**, **FILE** and **LS**
+(LogStream's own logs).

 Shortcuts: `/` focuses the search box, `Esc` clears it. Clicking a row shows all its fields.

@@ -254,7 +257,7 @@ also be changed (saved in `/data/audit.json`; `AUDIT_LOG` sets the default path)
  `auid` (login user ID), `user` (its name, or the uid when it cannot be resolved), `exe`, `res`
  (`success` / `failed`, from `res=` or `success=`) and `key` (rule key). Severity is `warning`
  when the result is a failure, `info` otherwise; facility `authpriv`; source `audit`. In the
-  list, audit lines have a violet left edge, a light tint and an **AUDIT** badge before the app;
+  list, audit lines have a violet left edge, a light tint and the **AUDIT** source badge;
  the **Source** filter shows them alone.
 - **Names**: `user` comes from the enriched format (`log_format = ENRICHED`, the default of
  recent auditd versions), else from the host's `/etc/passwd` when it is mounted as
@@ -265,10 +268,65 @@ also be changed (saved in `/data/audit.json`; `AUDIT_LOG` sets the default path)
  `/data/audit-state.json`: after a restart, reading resumes there; after a rotation by auditd,
  the end of `audit.log.1` is read before the new file.

+## Log files (Traefik, nginx, applications…)
+
+Logstream can follow the log files of other programs: Traefik, nginx, Apache, or any application
+that writes to a file. Declare each file in **Settings > Log sources > Log files** (saved in
+`/data/files.json`, up to 50): a **name** (the **app** of its entries, by default the file name),
+the **path** of the file as mounted in the container, a **format** (*Automatic* by default), an
+optional **host** (default: `/host/etc/hostname`, else `localhost`) and a switch.
+
+- **Mount** the directory read-only, e.g. in `docker-compose.yml`:
+  `- /var/log/traefik:/logs/traefik:ro`, then `docker compose up -d`. Files under `/var/log`
+  are already reachable as `/host/var/log/…`. The files must be readable by UID `10001` or the
+  group of `HOST_LOGS_GID` (`adm` by default); Settings > Log sources says when no file matches
+  or access is denied.
+- **Path**: one file, e.g. `/logs/traefik/access.log` (no wildcards). As soon as it is typed, the
+  file is checked: found or not, readable or not, its detected format and its last line.
+- **Format detection** (*Automatic*): from the last lines of the file (50 at most), the
+  structured format that at least 80 % of them follow — Traefik access JSON, JSON lines, access
+  log CLF, logfmt — else plain text. It is done again when the format is changed; the format
+  found is shown in the status of the file. Choose another format to force it (a regular
+  expression is never detected).
+- **Formats**:
+  - *Plain text*: one entry per line; the level is detected as for Docker logs, a timestamp at
+    the start of the line (ISO 8601, `2006/01/02 15:04:05`, `[02/Jan/2006:15:04:05 +0200]`,
+    `Jan  2 15:04:05`) becomes the message time and is removed from the message. Indented
+    lines (stack traces) are added to the previous entry.
+  - *JSON lines*: `msg` / `message`, `time` / `ts` / `@timestamp` (text or Unix time) and
+    `level` (word or number, pino/bunyan included) are recognized; the other keys become
+    fields, nested objects with dotted names (`req.id`).
+  - *logfmt*: `key=value` pairs, as in Traefik's default logs or Go programs; same keys as JSON.
+  - *Access log (CLF)*: Common / Combined Log Format of nginx and Apache, and Traefik's access
+    log in this format (router, server URL and duration included). Fields `client_ip`,
+    `http_method`, `http_path`, `http_status`, `http_size`, `user_agent`, `http_referer`,
+    `router`, `backend`, `duration_ms`.
+  - *Traefik access (JSON)*: the JSON access log of Traefik (`accessLog.format: json`),
+    summarized as `GET app.example.com/ 200 · 12.5 ms · app@docker · 203.0.113.9`, every key in
+    the fields. Traefik's own logs in the same file are read as JSON lines.
+  - *Regular expression* (RE2 / Go syntax): the named groups `time`, `level`, `msg`, `host`
+    and `app` fill these fields, `status` gives the level of an access log, the other groups
+    become fields, e.g. `^(?P<time>\S+ \S+) \[(?P<level>\w+)\] (?P<module>\S+): (?P<msg>.*)$`.
+    A line that does not match is added to the previous entry.
+
+  For access logs, 5xx statuses are `err`, 4xx `warning`, the others `info`. A line that does
+  not fit the chosen format is kept as plain text. Fields named like LogStream's own ones
+  (`host`, `app`…) are renamed `field_host`, `field_app`…
+- **Display**: source `file`, the path in `log_file`. In the list these lines have a green left
+  edge, a light tint and the **FILE** source badge; the **Source** filter shows them alone.
+- When a file is turned on, the lines of the last hour already in it are read first
+  (`FILES_BACKFILL`, `0` = only new lines; lines without a timestamp are then left out). The
+  start of that hour is found by bisection on the dates of the lines, so a large file that holds
+  months of logs is not read from its start; a file created later is read from its start, up to
+  64 MB per second, the status showing what is left to read. The inode and an offset are saved per file in
+  `/data/files-state.json`: after a restart reading resumes there; after a rotation
+  (`access.log` renamed `access.log.1`), the end of the old file is read before the new one;
+  a file truncated in place (`copytruncate`) is read again from its start.
+
 ## LogStream internal logs

 Logstream records its own events as logs, with **host** `logstream`, **app** the component
-(`store`, `syslog`, `docker`, `host`, `dmesg`, `audit`, `main`) and the `logstream` source:
+(`store`, `syslog`, `docker`, `host`, `dmesg`, `audit`, `files`, `main`) and the `logstream` source:
 VictoriaLogs unreachable and back, lost batches, batches refused from the disk buffer, syslog
 listener errors, Docker API or container streams lost, sources that cannot read, start and
 stop. They are on by default from level **warning**; **Settings > Log sources > LogStream internal
@@ -296,10 +354,82 @@ chosen in Settings), `severity`, `facility`, `host`, `host_ip`, `app`, `pid`, `s

 From the command line: `curl -o logs.csv 'localhost:8080/api/export.csv?q=error&range=24h&tz=Europe/Paris'`.

+## Reading API (n8n, scripts)
+
+`GET /api/v1/logs` returns the stored logs that follow a cursor, oldest first, so that a tool
+called on a schedule (n8n, a script, a SIEM connector) gets every new log once, without gaps
+or duplicates, even when many logs share the same timestamp.
+
+Access goes through an **API token**, created in *Settings > API* by an administrator and sent
+as `Authorization: Bearer lst_…`. A token is read-only and only opens `/api/v1/`; it works
+whatever the [authentication](#authentication) mode (`local`, `oidc`, or none). It is shown once,
+when it is created: LogStream only keeps its SHA-256 hash, in `/data/api_tokens.json`.
+Revoking it (then Save) cuts off access at once; the list shows when and from where each token was last
+used. A logged-in browser session can call the route too.
+
+| Parameter | Meaning |
+|---|---|
+| `query` | LogsQL filter (default `*`), e.g. `severity:in(err,crit) app:sshd`. Pipes (`\| ...`) are refused. |
+| `since` | where to start: the `next_cursor` of the previous answer, an RFC 3339 time (`2026-11-01T08:00:00Z`) or a duration back from now (`15m`, `6h`, `7d`). Default: `1h`. |
+| `limit` | rows per answer, 1 to 10,000 (default 1,000). |
+| `lag` | only logs received at least this long ago are returned (default `30s`, at most `1h`), so that the logs still in the queue or waiting for their DNS name are not skipped. |
+
+```json
+{
+  "rows": [{"_time": "2026-11-01T14:02:11.52Z", "_msg": "…", "host": "fw01", "app": "sshd", "severity": "err", …}],
+  "next_cursor": "eyJ0IjoiMjAyNi0xMS0wMVQxNDowMjoxMS41MjAwMDAwMDFaIiwicSI6IjJlYjE4YzNhIn0",
+  "has_more": false,
+  "until": "2026-11-01T14:05:30.1Z"
+}
+```
+
+Rows have the stored fields (as in the UI's JSON view), sorted by `_time`, the reception time.
+Always send back `next_cursor`, even when `rows` is empty. `has_more: true` means more logs are
+ready: call again at once. `waiting: true` means logs from the [disk buffer](#configuration) are
+still being sent to VictoriaLogs: nothing is returned until they are stored, so none is missed.
+The cursor belongs to its `query`: changing the query keeps the position in time. Errors come
+as `{"error", "code"}` with status 400 (bad parameter or LogsQL), 401 (invalid or revoked token)
+or 502 (VictoriaLogs unreachable).
+
+```bash
+curl -H "Authorization: Bearer lst_…" \
+  "https://logs.example.org/api/v1/logs?query=severity:err&since=15m&limit=1000"
+```
+
+### Example: n8n workflow
+
+Four nodes, the cursor kept in the workflow's static data between runs:
+
+1. **Schedule Trigger**: every minute.
+2. **Code** (*Run Once for All Items*), reads the cursor:
+   ```js
+   const data = $getWorkflowStaticData('global');
+   return [{ json: { since: data.cursor || '15m' } }];
+   ```
+3. **HTTP Request**: method `GET`, URL `https://logs.example.org/api/v1/logs`.
+   *Authentication*: Generic Credential Type > Header Auth, with name `Authorization` and value
+   `Bearer lst_…`. *Send Query Parameters*: `query` = `severity:in(emerg,alert,crit,err)`,
+   `since` = `{{ $json.since }}`, `limit` = `1000`.
+4. **Code** (*Run Once for All Items*), saves the cursor and turns each log into an item:
+   ```js
+   const data = $getWorkflowStaticData('global');
+   const page = $input.first().json;
+   data.cursor = page.next_cursor;
+   return page.rows.map((row) => ({ json: row }));
+   ```
+
+Then connect what the logs should feed (Slack, mail, ticket, database…). n8n only keeps static
+data for runs of the active workflow, not for manual test runs: while testing, each run starts
+again from `15m`. When more than 1,000 logs arrive per minute, `has_more` is true and the
+following runs catch up; raise `limit` or run the trigger more often if needed.
+
 ## Settings

-The gear icon opens the settings, organized in tabs. Everything except color tags is
-remembered per browser.
+The gear icon opens the settings, organized in tabs. Changes show at once but are only kept
+with the **Save** button, under the tab labels: it takes the accent color while changes are
+waiting. **Cancel** goes back to the saved settings, and closing the window with unsaved changes
+asks before dropping them. Localization and Appearance are remembered per browser; color tags
+and log sources are saved on the server. Purging and resetting column widths act at once.

 - **Localization**
  - *Language*: English or French.
@@ -347,6 +477,11 @@ remembered per browser.
  (already set in `docker-compose.yml`). The feature is off by default: set `ALLOW_PURGE=true`
  to allow it. Any admin can then purge: turn on [authentication](#authentication) if the UI
  is reachable by others.
+- **API**: API tokens for the [reading API](#reading-api-n8n-scripts): add one with a name,
+  revoke one, see when and from where each was last used. Additions and revocations wait for
+  **Save** like the other settings (**Cancel** drops them). After Save, each new token is shown
+  once with a copy button, and the curl example below uses it, highlighted, with its own copy
+  button. Reserved to administrators.

 ## Authentication

@@ -460,6 +595,7 @@ are only known by your router or a local DNS (Pi-hole, AdGuard, Unbound…), set
 | `AUDIT_LOG` | `/var/log/audit/audit.log` | default path of the Linux audit log (can be changed in Settings > Log sources) |
 | `AUDIT_BACKFILL` | `1h` | history read when the Linux audit source is turned on |
 | `AUDIT_HOST` | empty | host name of the audit events when the records carry no `node=` |
+| `FILES_BACKFILL` | `1h` | history read when a log file is turned on (Settings > Log sources > Log files) |
 | `TZ` | `Europe/Paris` | time zone for RFC 3164 timestamps (which carry none) |
 | `BATCH_SIZE`, `FLUSH_MS`, `QUEUE_SIZE` | `1000`, `1000`, `100000` | ingestion tuning |
 | `SPOOL_MAX_MB` | `1024` | disk buffer size for batches VictoriaLogs could not take (`0` = no buffer: retried for 15 s, then dropped) |
@@ -515,15 +651,19 @@ To update one of them:
 | `hub.go` | pushes new messages to browsers (SSE) |
 | `rdns.go` | cached reverse DNS lookups |
 | `export.go` | streamed CSV export |
+| `logsapi.go` | reading API `/api/v1/logs`: cursor, groups of logs with the same time |
+| `apitokens.go` | API tokens: storage (hashed), Bearer check, `/api/tokens` |
 | `docker.go` | Docker container logs (API, followers, positions, level detection) |
 | `syslogserver.go` | syslog listeners opened and closed from Settings > Log sources |
 | `hostlogs.go`, `journal.go` | host system logs: systemd journal reader (no `journalctl`) and `/var/log` follower |
 | `dmesg.go` | kernel messages: `/dev/kmsg` reader, record parsing, position by boot ID and sequence number |
 | `audit.go` | Linux audit: `audit.log` follower (rotation, saved offset), record parsing, grouping by event, summary |
+| `filesource.go`, `fileformats.go` | log files: follower (rotation, saved offsets, continuation lines) and formats (detection, text, JSON, logfmt, CLF, Traefik, regular expression) |
 | `selflog.go` | LogStream internal logs: `logEvent`, minimum level, throttling, bounded queue |
 | `tags.go` | color tag storage |
 | `presets.go`, `presets.json` | color tag presets (`/api/presets`), built-in list |
 | `api.go` | `/api/*` HTTP routes |
+| `static.go` | embedded UI files: ETag per file, revalidated on each load (`no-cache`, 304 when unchanged) so an update is always picked up; fonts cached 30 days |
 | `web/` | UI (HTML, CSS, plain JavaScript, no build step), embedded in the binary; translations live in `web/app.js` (`I18N`), and in `web/login.html` for the login page |

 ## Note
@@ -531,3 +671,8 @@ To update one of them:
 With Docker Desktop (macOS/Windows), the source IP seen by the container for UDP packets is
 the Docker gateway. The `host` field still comes from the syslog header, which normally
 carries the sender's real name.
+
+## Third-party assets
+
+UI icons come from [Papicons](https://github.com/PapillonApp/papicons) (MIT) and, for a few of them,
+[Lucide](https://lucide.dev) (ISC). Licenses and notices: [THIRD_PARTY_NOTICES.md](THIRD_PARTY_NOTICES.md).
@@ -0,0 +1,39 @@
+# Third-party notices
+
+## Papicons
+
+Most UI icons (inline SVG with `class="pi"` in `web/index.html`, `web/login.html` and
+`web/app.js`) come from Papicons: https://github.com/PapillonApp/papicons
+
+```
+MIT License
+
+Copyright (c) 2025 Association Papillon
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+```
+
+## Lucide
+
+The few icons Papicons has no equivalent for (zoom out in the time range bar, Docker source
+badge) come from Lucide (ISC license): https://github.com/lucide-icons/lucide/blob/main/LICENSE
+
+## Fonts
+
+The bundled fonts are covered by the license files next to them in `web/fonts/`.
@@ -25,13 +25,19 @@ type API struct {
 	host       *HostLogs
 	dmesg      *Dmesg
 	audit      *Audit
+	files      *Files
 	selfLog    *SelfLog
 	dbstats    dbStatsCache
+	tokens     *TokenStore
 }

 func (a *API) Routes(mux *http.ServeMux) {
 	mux.HandleFunc("GET /healthz", a.health)
 	mux.HandleFunc("GET /api/logs", a.logs)
+	mux.HandleFunc("GET /api/v1/logs", a.logsV1)
+	mux.HandleFunc("GET /api/tokens", a.listTokens)
+	mux.HandleFunc("POST /api/tokens", a.createToken)
+	mux.HandleFunc("DELETE /api/tokens/{id}", a.deleteToken)
 	mux.HandleFunc("GET /api/histogram", a.histogram)
 	mux.HandleFunc("GET /api/facets", a.facets)
 	mux.HandleFunc("GET /api/stream", a.stream)
@@ -39,6 +45,8 @@ func (a *API) Routes(mux *http.ServeMux) {
 	mux.HandleFunc("GET /api/dbstats", a.dbStats)
 	mux.HandleFunc("GET /api/tags", a.listTags)
 	mux.HandleFunc("POST /api/tags", a.createTag)
+	mux.HandleFunc("PUT /api/tags", a.replaceTags)
+	mux.HandleFunc("GET /api/tags/defaults", a.defaultTags)
 	mux.HandleFunc("POST /api/tags/reset", a.resetTags)
 	mux.HandleFunc("GET /api/presets", a.listPresets)
 	mux.HandleFunc("PUT /api/tags/{id}", a.updateTag)
@@ -56,6 +64,9 @@ func (a *API) Routes(mux *http.ServeMux) {
 	mux.HandleFunc("PUT /api/dmesg", a.dmesgConfigure)
 	mux.HandleFunc("GET /api/audit", a.auditStatus)
 	mux.HandleFunc("PUT /api/audit", a.auditConfigure)
+	mux.HandleFunc("GET /api/files", a.filesStatus)
+	mux.HandleFunc("PUT /api/files", a.filesConfigure)
+	mux.HandleFunc("POST /api/files/detect", a.filesDetect)
 	mux.HandleFunc("GET /api/selflog", a.selfLogStatus)
 	mux.HandleFunc("PUT /api/selflog", a.selfLogConfigure)
 }
@@ -80,6 +91,41 @@ func (a *API) auditConfigure(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, http.StatusOK, a.audit.Status())
 }

+// GET /api/files: the log files of the "Files" source (Settings > Sources).
+func (a *API) filesStatus(w http.ResponseWriter, r *http.Request) {
+	writeJSON(w, http.StatusOK, a.files.Status())
+}
+
+// PUT /api/files {"sources": [{"id", "name", "path", "format" (auto or a format), "regex", "host", "enabled"}]}
+// (no id: a new file).
+func (a *API) filesConfigure(w http.ResponseWriter, r *http.Request) {
+	var cfg filesConfig
+	if err := json.NewDecoder(http.MaxBytesReader(w, r.Body, 64<<10)).Decode(&cfg); err != nil {
+		writeErr(w, http.StatusBadRequest, err)
+		return
+	}
+	if err := a.files.Configure(cfg); err != nil {
+		writeErr(w, http.StatusBadRequest, err)
+		return
+	}
+	log.Printf("file sources changed from %s: %d files", r.RemoteAddr, len(cfg.Sources))
+	writeJSON(w, http.StatusOK, a.files.Status())
+}
+
+// POST /api/files/detect {"path": "/logs/traefik/access.log"}: whether the file
+// can be read, its detected format and its last line (Settings > Sources). A
+// POST, so that read-only accounts cannot read files through it.
+func (a *API) filesDetect(w http.ResponseWriter, r *http.Request) {
+	var req struct {
+		Path string `json:"path"`
+	}
+	if err := json.NewDecoder(http.MaxBytesReader(w, r.Body, 4096)).Decode(&req); err != nil {
+		writeErr(w, http.StatusBadRequest, err)
+		return
+	}
+	writeJSON(w, http.StatusOK, DetectFile(req.Path))
+}
+
 // GET /api/selflog: state of the LogStream internal logs (Settings > Sources).
 func (a *API) selfLogStatus(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, http.StatusOK, a.selfLog.Status())
@@ -492,6 +538,41 @@ func (a *API) purge(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, http.StatusOK, map[string]string{"task_id": id})
 }

+// PUT /api/tags [tags]: replaces the whole list. On an invalid tag, "index"
+// gives its position and nothing is saved.
+func (a *API) replaceTags(w http.ResponseWriter, r *http.Request) {
+	var in []Tag
+	if err := json.NewDecoder(http.MaxBytesReader(w, r.Body, 1<<20)).Decode(&in); err != nil {
+		writeErr(w, http.StatusBadRequest, err)
+		return
+	}
+	tags, err := a.tags.Replace(in)
+	var le *tagListError
+	switch {
+	case errors.As(err, &le):
+		body := map[string]any{"error": err.Error(), "index": le.index}
+		var ce *codedError
+		if errors.As(err, &ce) {
+			body["code"] = ce.code
+			if ce.detail != "" {
+				body["detail"] = ce.detail
+			}
+		}
+		writeJSON(w, http.StatusBadRequest, body)
+	case errors.Is(err, errTooManyTags):
+		writeErr(w, http.StatusBadRequest, err)
+	case err != nil:
+		writeErr(w, http.StatusInternalServerError, err)
+	default:
+		writeJSON(w, http.StatusOK, tags)
+	}
+}
+
+// GET /api/tags/defaults: the tags "Restore default tags" shows before saving.
+func (a *API) defaultTags(w http.ResponseWriter, r *http.Request) {
+	writeJSON(w, http.StatusOK, defaultTags())
+}
+
 func (a *API) resetTags(w http.ResponseWriter, r *http.Request) {
 	tags, err := a.tags.Reset()
 	if err != nil {
@@ -0,0 +1,254 @@
+package main
+
+import (
+	"crypto/rand"
+	"crypto/sha256"
+	"crypto/subtle"
+	"encoding/base64"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync"
+	"time"
+	"unicode/utf8"
+)
+
+// API tokens: read-only access to /api/v1/ for scripts and automation tools
+// (n8n…), sent as "Authorization: Bearer lst_…". They are created and revoked
+// in Settings > API by an administrator, and work whatever the AUTH_MODE,
+// including without authentication. Only a SHA-256 of each token is kept, in
+// DATA_DIR/api_tokens.json: a token is shown once, when it is created.
+
+const (
+	tokenPrefix    = "lst_"
+	maxTokens      = 100
+	lastUsedPeriod = time.Minute // last use of a token is written to disk at most this often (or on a new IP)
+)
+
+var errTokenNotFound = errors.New("token not found")
+
+type apiToken struct {
+	ID       string    `json:"id"`
+	Name     string    `json:"name"`
+	Hint     string    `json:"hint"` // start of the token, to recognize it
+	Hash     string    `json:"hash"` // hex SHA-256 of the whole token
+	Created  time.Time `json:"created"`
+	LastUsed time.Time `json:"last_used,omitzero"`
+	LastIP   string    `json:"last_ip,omitempty"`
+}
+
+// apiTokenInfo is what the UI sees of a token (never its hash).
+type apiTokenInfo struct {
+	ID       string    `json:"id"`
+	Name     string    `json:"name"`
+	Hint     string    `json:"hint"`
+	Created  time.Time `json:"created"`
+	LastUsed time.Time `json:"last_used,omitzero"`
+	LastIP   string    `json:"last_ip,omitempty"`
+}
+
+type TokenStore struct {
+	path   string
+	mu     sync.Mutex
+	tokens []apiToken
+}
+
+func LoadTokenStore(path string) (*TokenStore, error) {
+	s := &TokenStore{path: path}
+	b, err := os.ReadFile(path)
+	if errors.Is(err, os.ErrNotExist) {
+		return s, nil
+	}
+	if err != nil {
+		return nil, err
+	}
+	if err := json.Unmarshal(b, &s.tokens); err != nil {
+		return nil, fmt.Errorf("%s: %w", path, err)
+	}
+	return s, nil
+}
+
+// save writes the file atomically, readable by its owner only; the caller holds the lock.
+func (s *TokenStore) save() error {
+	b, err := json.MarshalIndent(s.tokens, "", "  ")
+	if err != nil {
+		return err
+	}
+	if err := os.MkdirAll(filepath.Dir(s.path), 0o755); err != nil {
+		return err
+	}
+	tmp := s.path + ".tmp"
+	if err := os.WriteFile(tmp, b, 0o600); err != nil {
+		return err
+	}
+	return os.Rename(tmp, s.path)
+}
+
+func hashToken(token string) string {
+	sum := sha256.Sum256([]byte(token))
+	return hex.EncodeToString(sum[:])
+}
+
+func (s *TokenStore) List() []apiTokenInfo {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	out := make([]apiTokenInfo, len(s.tokens))
+	for i, t := range s.tokens {
+		out[i] = apiTokenInfo{ID: t.ID, Name: t.Name, Hint: t.Hint, Created: t.Created, LastUsed: t.LastUsed, LastIP: t.LastIP}
+	}
+	return out
+}
+
+// Create makes a new token and returns it in clear, the only time it exists so.
+func (s *TokenStore) Create(name string) (apiTokenInfo, string, error) {
+	name = strings.TrimSpace(name)
+	if name == "" || utf8.RuneCountInString(name) > 80 {
+		return apiTokenInfo{}, "", &codedError{code: "token_name", msg: "give the token a name of 1 to 80 characters"}
+	}
+	b := make([]byte, 32)
+	if _, err := rand.Read(b); err != nil {
+		return apiTokenInfo{}, "", err
+	}
+	secret := tokenPrefix + base64.RawURLEncoding.EncodeToString(b)
+	t := apiToken{ID: newID(), Name: name, Hint: secret[:len(tokenPrefix)+6], Hash: hashToken(secret), Created: time.Now().UTC()}
+
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	if len(s.tokens) >= maxTokens {
+		return apiTokenInfo{}, "", &codedError{code: "token_max", msg: fmt.Sprintf("at most %d API tokens", maxTokens)}
+	}
+	s.tokens = append(s.tokens, t)
+	if err := s.save(); err != nil {
+		s.tokens = s.tokens[:len(s.tokens)-1]
+		return apiTokenInfo{}, "", err
+	}
+	return apiTokenInfo{ID: t.ID, Name: t.Name, Hint: t.Hint, Created: t.Created}, secret, nil
+}
+
+func (s *TokenStore) Delete(id string) error {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	for i, t := range s.tokens {
+		if t.ID == id {
+			s.tokens = append(s.tokens[:i:i], s.tokens[i+1:]...)
+			return s.save()
+		}
+	}
+	return errTokenNotFound
+}
+
+// Check tells whether token is a valid API token, and notes its use.
+func (s *TokenStore) Check(token, ip string) (name string, ok bool) {
+	if !strings.HasPrefix(token, tokenPrefix) {
+		return "", false
+	}
+	h := []byte(hashToken(token))
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	for i := range s.tokens {
+		t := &s.tokens[i]
+		if subtle.ConstantTimeCompare(h, []byte(t.Hash)) != 1 {
+			continue
+		}
+		now := time.Now().UTC()
+		stale := now.Sub(t.LastUsed) >= lastUsedPeriod || t.LastIP != ip
+		t.LastUsed, t.LastIP = now, ip
+		if stale {
+			if err := s.save(); err != nil {
+				log.Printf("api tokens: %v", err)
+			}
+		}
+		return t.Name, true
+	}
+	return "", false
+}
+
+// bearerToken returns the token of an "Authorization: Bearer …" header.
+func bearerToken(r *http.Request) (string, bool) {
+	scheme, token, ok := strings.Cut(r.Header.Get("Authorization"), " ")
+	if !ok || !strings.EqualFold(scheme, "Bearer") {
+		return "", false
+	}
+	return strings.TrimSpace(token), true
+}
+
+// tokenAuth serves the requests carrying an API token itself, read-only and
+// limited to /api/v1/, before the session login (auth); api is the handler
+// behind the login.
+func tokenAuth(tokens *TokenStore, auth, api http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		token, ok := bearerToken(r)
+		if !ok {
+			auth.ServeHTTP(w, r)
+			return
+		}
+		ip := clientIP(r)
+		if _, valid := tokens.Check(token, ip); !valid {
+			log.Printf("api: invalid or revoked token from %s", ip)
+			time.Sleep(loginFailDelay)
+			w.Header().Set("WWW-Authenticate", `Bearer realm="logstream"`)
+			writeErr(w, http.StatusUnauthorized, &codedError{code: "token", msg: "invalid or revoked API token"})
+			return
+		}
+		if !strings.HasPrefix(r.URL.Path, "/api/v1/") || !isSafeMethod(r.Method) {
+			writeErr(w, http.StatusForbidden, &codedError{code: "token_scope", msg: "API tokens only give read access to /api/v1/"})
+			return
+		}
+		api.ServeHTTP(w, asViewer(r))
+	})
+}
+
+// GET /api/tokens: the API tokens (Settings > API), for administrators.
+func (a *API) listTokens(w http.ResponseWriter, r *http.Request) {
+	if isViewer(r) {
+		writeErr(w, http.StatusForbidden, &codedError{code: "read_only", msg: "read-only account: changes are reserved to administrators"})
+		return
+	}
+	writeJSON(w, http.StatusOK, a.tokens.List())
+}
+
+// POST /api/tokens {"name": "n8n"}: returns the new token, with "token" in clear.
+func (a *API) createToken(w http.ResponseWriter, r *http.Request) {
+	var body struct {
+		Name string `json:"name"`
+	}
+	if err := json.NewDecoder(http.MaxBytesReader(w, r.Body, 4096)).Decode(&body); err != nil {
+		writeErr(w, http.StatusBadRequest, err)
+		return
+	}
+	info, secret, err := a.tokens.Create(body.Name)
+	var ce *codedError
+	switch {
+	case errors.As(err, &ce):
+		writeErr(w, http.StatusBadRequest, err)
+		return
+	case err != nil:
+		writeErr(w, http.StatusInternalServerError, err)
+		return
+	}
+	log.Printf("api token %q created from %s", info.Name, clientIP(r))
+	writeJSON(w, http.StatusCreated, struct {
+		apiTokenInfo
+		Token string `json:"token"`
+	}{info, secret})
+}
+
+// DELETE /api/tokens/{id}: revokes a token at once.
+func (a *API) deleteToken(w http.ResponseWriter, r *http.Request) {
+	err := a.tokens.Delete(r.PathValue("id"))
+	switch {
+	case errors.Is(err, errTokenNotFound):
+		writeErr(w, http.StatusNotFound, err)
+	case err != nil:
+		writeErr(w, http.StatusInternalServerError, err)
+	default:
+		log.Printf("api token %s revoked from %s", r.PathValue("id"), clientIP(r))
+		w.WriteHeader(http.StatusNoContent)
+	}
+}
@@ -0,0 +1,176 @@
+package main
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+)
+
+func TestTokenStore(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "api_tokens.json")
+	s, err := LoadTokenStore(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, _, err := s.Create("  "); err == nil {
+		t.Fatal("a token without a name should be refused")
+	}
+	info, secret, err := s.Create("n8n")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !strings.HasPrefix(secret, tokenPrefix) || len(secret) < 40 || !strings.HasPrefix(secret, info.Hint) {
+		t.Fatalf("token %q, hint %q", secret, info.Hint)
+	}
+	b, _ := os.ReadFile(path)
+	if strings.Contains(string(b), secret) || !strings.Contains(string(b), hashToken(secret)) {
+		t.Fatal("the file must hold the hash of the token, not the token")
+	}
+	if st, _ := os.Stat(path); st.Mode().Perm() != 0o600 {
+		t.Fatalf("file mode %v, want 0600", st.Mode().Perm())
+	}
+	if _, ok := s.Check(secret+"x", "10.0.0.1"); ok {
+		t.Fatal("a wrong token was accepted")
+	}
+	if name, ok := s.Check(secret, "10.0.0.1"); !ok || name != "n8n" {
+		t.Fatal("the token was refused")
+	}
+
+	// Reloaded from disk (restart): still valid, last use kept.
+	s2, err := LoadTokenStore(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if l := s2.List(); len(l) != 1 || l[0].LastIP != "10.0.0.1" || l[0].LastUsed.IsZero() {
+		t.Fatalf("after reload: %+v", l)
+	}
+	if _, ok := s2.Check(secret, "10.0.0.2"); !ok {
+		t.Fatal("token refused after reload")
+	}
+	if err := s2.Delete(info.ID); err != nil {
+		t.Fatal(err)
+	}
+	if _, ok := s2.Check(secret, "10.0.0.2"); ok {
+		t.Fatal("a revoked token was accepted")
+	}
+	if err := s2.Delete(info.ID); err != errTokenNotFound {
+		t.Fatalf("second delete: %v", err)
+	}
+}
+
+func TestTokenAuth(t *testing.T) {
+	loginFailDelay = 0
+	tokens, _ := LoadTokenStore(filepath.Join(t.TempDir(), "api_tokens.json"))
+	_, secret, _ := tokens.Create("n8n")
+
+	var reached string
+	mux := http.NewServeMux()
+	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		reached = r.URL.Path
+		if isViewer(r) {
+			reached += " viewer"
+		}
+	})
+	app := readOnly(mux)
+	login := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { writeAuthRequired(w) })
+	h := tokenAuth(tokens, login, app)
+
+	call := func(method, path, auth string) int {
+		reached = ""
+		req := httptest.NewRequest(method, path, nil)
+		if auth != "" {
+			req.Header.Set("Authorization", auth)
+		}
+		rec := httptest.NewRecorder()
+		h.ServeHTTP(rec, req)
+		return rec.Code
+	}
+	if code := call("GET", "/api/v1/logs", "Bearer "+secret); code != http.StatusOK || reached != "/api/v1/logs viewer" {
+		t.Fatalf("valid token: %d, reached %q", code, reached)
+	}
+	if code := call("GET", "/api/v1/logs", "bearer "+secret); code != http.StatusOK {
+		t.Fatalf("lower-case scheme: %d", code)
+	}
+	for _, tc := range []struct {
+		method, path, auth string
+		want               int
+	}{
+		{"GET", "/api/v1/logs", "Bearer lst_wrong", http.StatusUnauthorized},
+		{"GET", "/api/v1/logs", "Bearer ", http.StatusUnauthorized},
+		{"GET", "/api/tags", "Bearer " + secret, http.StatusForbidden},
+		{"GET", "/api/tokens", "Bearer " + secret, http.StatusForbidden},
+		{"POST", "/api/v1/logs", "Bearer " + secret, http.StatusForbidden},
+		{"GET", "/api/v1/logs", "", http.StatusUnauthorized},           // no token: the login decides
+		{"GET", "/api/v1/logs", "Basic dTpw", http.StatusUnauthorized}, // Basic goes to the login
+	} {
+		if code := call(tc.method, tc.path, tc.auth); code != tc.want || reached != "" {
+			t.Errorf("%s %s %q: %d (reached %q), want %d", tc.method, tc.path, tc.auth, code, reached, tc.want)
+		}
+	}
+}
+
+// With local authentication, a token opens /api/v1/ without a session.
+func TestTokenWithLocalAuth(t *testing.T) {
+	loginFailDelay = 0
+	dir := t.TempDir()
+	tokens, _ := LoadTokenStore(filepath.Join(dir, "api_tokens.json"))
+	_, secret, _ := tokens.Create("script")
+	app := readOnly(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { _, _ = w.Write([]byte("ok")) }))
+	auth, err := newAuth(authConfig{mode: "local", user: "admin", pass: "pw", dataDir: dir, sessionTTL: time.Hour}, app)
+	if err != nil {
+		t.Fatal(err)
+	}
+	h := tokenAuth(tokens, auth, app)
+	req := httptest.NewRequest("GET", "/api/v1/logs", nil)
+	rec := httptest.NewRecorder()
+	h.ServeHTTP(rec, req)
+	if rec.Code != http.StatusUnauthorized {
+		t.Fatalf("without token: %d", rec.Code)
+	}
+	req.Header.Set("Authorization", "Bearer "+secret)
+	rec = httptest.NewRecorder()
+	h.ServeHTTP(rec, req)
+	if rec.Code != http.StatusOK || rec.Body.String() != "ok" {
+		t.Fatalf("with token: %d %s", rec.Code, rec.Body)
+	}
+}
+
+func TestTokenHandlers(t *testing.T) {
+	tokens, _ := LoadTokenStore(filepath.Join(t.TempDir(), "api_tokens.json"))
+	a := &API{tokens: tokens}
+	mux := http.NewServeMux()
+	a.Routes(mux)
+	do := func(r *http.Request) *httptest.ResponseRecorder {
+		rec := httptest.NewRecorder()
+		readOnly(mux).ServeHTTP(rec, r)
+		return rec
+	}
+	rec := do(httptest.NewRequest("POST", "/api/tokens", strings.NewReader(`{"name":"n8n"}`)))
+	var created struct {
+		ID, Token, Hint string
+	}
+	if err := json.Unmarshal(rec.Body.Bytes(), &created); rec.Code != http.StatusCreated || err != nil || created.Token == "" {
+		t.Fatalf("create: %d %s", rec.Code, rec.Body)
+	}
+	rec = do(httptest.NewRequest("GET", "/api/tokens", nil))
+	if rec.Code != http.StatusOK || strings.Contains(rec.Body.String(), created.Token) || strings.Contains(rec.Body.String(), "hash") {
+		t.Fatalf("list must not show the token or its hash: %s", rec.Body)
+	}
+	if rec := do(asViewer(httptest.NewRequest("GET", "/api/tokens", nil))); rec.Code != http.StatusForbidden {
+		t.Fatalf("viewer list: %d", rec.Code)
+	}
+	if rec := do(asViewer(httptest.NewRequest("DELETE", "/api/tokens/"+created.ID, nil))); rec.Code != http.StatusForbidden {
+		t.Fatalf("viewer delete: %d", rec.Code)
+	}
+	if rec := do(httptest.NewRequest("DELETE", "/api/tokens/"+created.ID, nil)); rec.Code != http.StatusNoContent {
+		t.Fatalf("delete: %d", rec.Code)
+	}
+	if rec := do(httptest.NewRequest("DELETE", "/api/tokens/"+created.ID, nil)); rec.Code != http.StatusNotFound {
+		t.Fatalf("delete again: %d", rec.Code)
+	}
+}
@@ -6,10 +6,10 @@ services:
    depends_on:
      - victorialogs
      - docker-proxy
-    ports:
-      - "${SYSLOG_PORT:-514}:5514/udp"
-      - "${SYSLOG_PORT:-514}:5514/tcp"
-      - "${HTTP_PORT:-8080}:8080"
+#    ports:
+#      - "${SYSLOG_PORT:-5514}:5514/udp"
+#      - "${SYSLOG_PORT:-5514}:5514/tcp"
+#      - "${HTTP_PORT:-8989}:8080"
    environment:
      VLOGS_URL: http://victorialogs:9428
      SYSLOG_PUBLIC_PORT: ${SYSLOG_PORT:-514}     # le port d'ecoute syslog par defaut (attention aux ports <1024)
@@ -39,6 +39,7 @@ services:
      HOST_LOGS_BACKFILL: ${HOST_LOGS_BACKFILL:-1h}   # historique lu a l'activation des logs systeme de l'hote
      DMESG_BACKFILL: ${DMESG_BACKFILL:-1h}   # historique lu a l'activation des messages du noyau (dmesg)
      AUDIT_BACKFILL: ${AUDIT_BACKFILL:-1h}   # historique lu a l'activation de l'audit Linux (auditd)
+      FILES_BACKFILL: ${FILES_BACKFILL:-1h}   # historique lu a l'activation d'un fichier de logs (Reglages > Sources)
      AUDIT_HOST: ${AUDIT_HOST:-}             # nom d'hote des evenements d'audit (vide : node= des enregistrements, sinon /host/etc/hostname)
    group_add:
      - "${HOST_LOGS_GID:-4}"        # groupe autorise a lire les logs de l'hote (4 = adm sur Debian/Ubuntu)
@@ -59,10 +60,12 @@ services:
      - /run/log/journal:/host/run/log/journal:ro     # journal systemd volatile
      # audit Linux (auditd), source a activer dans Reglages > Sources ; le fichier doit etre
      # lisible par l'UID 10001 : log_group = adm dans /etc/audit/auditd.conf (voir le README)
-      # - /var/log/audit:/var/log/audit:ro
+      - /var/log/audit:/var/log/audit:ro
      # noms des utilisateurs et de l'hote pour les evenements d'audit (optionnel)
-      # - /etc/passwd:/host/etc/passwd:ro
-      # - /etc/hostname:/host/etc/hostname:ro
+      - /etc/passwd:/host/etc/passwd:ro
+      - /etc/hostname:/host/etc/hostname:ro
+      # fichiers de logs d'autres programmes (Traefik, nginx...), a declarer dans Reglages > Sources > Fichiers de logs
+      - /home/traefik/log:/home/logs/traefik:ro
      # logo de la page de connexion, avec LOGIN_LOGO=/config/logo.png dans .env
      # - ./logo.png:/config/logo.png:ro
      # prereglages de tags personnalises, avec PRESETS_FILE=/config/presets.json dans .env
@@ -99,7 +102,12 @@ services:
      - /var/run/docker.sock:/var/run/docker.sock:ro
    labels:
      logstream.exclude: "true"      # pour exclure les logs propres de logstream
+    networks:
+      - traefik-net

+networks:
+  traefik-net:
+    external: true
 volumes:
  logstream-data:
  vlogs-data:
@@ -0,0 +1,689 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+	"unicode/utf8"
+)
+
+// Formats of the "Files" source (Settings > Sources), one per declared file.
+const (
+	fmtAuto    = "auto"    // detected from the last lines of the file
+	fmtText    = "text"    // one line per entry, level and leading timestamp detected
+	fmtJSON    = "json"    // JSON lines: msg/time/level recognized, other keys as fields
+	fmtLogfmt  = "logfmt"  // key=value pairs (Traefik "common" logs, Go programs…)
+	fmtRegex   = "regex"   // regular expression with named groups
+	fmtCLF     = "clf"     // access logs in Common/Combined Log Format (nginx, Apache, Traefik)
+	fmtTraefik = "traefik" // Traefik access log in JSON
+)
+
+var fileFormats = map[string]bool{fmtText: true, fmtJSON: true, fmtLogfmt: true, fmtRegex: true, fmtCLF: true, fmtTraefik: true}
+
+// fileRec is one parsed line (or several, for continuation lines).
+type fileRec struct {
+	t      time.Time
+	dated  bool // t comes from the line
+	sev    int
+	msg    string
+	host   string
+	app    string
+	fields map[string]string
+}
+
+const (
+	maxFileFields   = 64
+	maxFieldValue   = 4096
+	maxFileMsg      = 64 << 10 // message with its continuation lines
+	maxContinuation = 500      // continuation lines added to one entry
+)
+
+// fileParser turns a line of a file into an entry, for one format.
+type fileParser struct {
+	format string
+	re     *regexp.Regexp // fmtRegex
+}
+
+func newFileParser(format, expr string) (*fileParser, error) {
+	if !fileFormats[format] {
+		return nil, fmt.Errorf("unknown format %q", format)
+	}
+	p := &fileParser{format: format}
+	if format == fmtRegex {
+		if strings.TrimSpace(expr) == "" {
+			return nil, fmt.Errorf("the regex format needs a regular expression")
+		}
+		re, err := regexp.Compile(expr)
+		if err != nil {
+			return nil, fmt.Errorf("invalid regular expression: %v", err)
+		}
+		p.re = re
+	}
+	return p, nil
+}
+
+// multiline tells whether lines that do not start an entry are added to the
+// previous one (stack traces…). Structured formats are one entry per line.
+func (p *fileParser) multiline() bool {
+	return p.format == fmtText || p.format == fmtRegex
+}
+
+// continuation reports a line that belongs to the previous entry: indented,
+// or not matching the regular expression.
+func (p *fileParser) continuation(line string) bool {
+	if line != "" && (line[0] == ' ' || line[0] == '\t') {
+		return true
+	}
+	return p.format == fmtRegex && !p.re.MatchString(line)
+}
+
+// parse decodes one line; it never fails (a line in another format is kept as text).
+func (p *fileParser) parse(line string, now time.Time) *fileRec {
+	line = cleanLine(line)
+	switch p.format {
+	case fmtJSON, fmtTraefik:
+		if obj, ok := decodeJSONLine(line); ok {
+			if p.format == fmtTraefik {
+				if r := traefikRec(obj, line, now); r != nil {
+					return r
+				}
+			}
+			return jsonRec(obj, line, now)
+		}
+	case fmtLogfmt:
+		if kv := parseLogfmt(line); len(kv) > 0 {
+			return logfmtRec(kv, line, now)
+		}
+	case fmtRegex:
+		if m := p.re.FindStringSubmatch(line); m != nil {
+			return p.regexRec(m, line, now)
+		}
+	case fmtCLF:
+		if r := clfRec(line, now); r != nil {
+			return r
+		}
+	}
+	return textRec(line, now)
+}
+
+func cleanLine(s string) string {
+	s = strings.TrimRight(s, "\r")
+	s = ansiRe.ReplaceAllString(s, "")
+	if !utf8.ValidString(s) {
+		s = strings.ToValidUTF8(s, "�")
+	}
+	return s
+}
+
+// textRec: the line itself, without its leading timestamp when there is one.
+func textRec(line string, now time.Time) *fileRec {
+	r := &fileRec{t: now, sev: 6, msg: line}
+	if m := leadTimeRe.FindStringSubmatchIndex(line); m != nil {
+		if t, ok := parseLogTime(line[m[2]:m[3]], now); ok {
+			r.t, r.dated = t, true
+			if rest := line[m[1]:]; strings.TrimSpace(rest) != "" {
+				r.msg = rest
+			}
+		}
+	}
+	if n, ok := detectLevel(r.msg); ok {
+		r.sev = n
+	}
+	return r
+}
+
+/* ---------- Timestamps ---------- */
+
+// leadTimeRe: a timestamp at the start of a line, possibly in brackets
+// (ISO 8601 / RFC 3339, 2006/01/02 15:04:05, CLF, syslog "Jan _2 15:04:05").
+var leadTimeRe = regexp.MustCompile(`^\[?(\d{4}[-/]\d{2}[-/]\d{2}[T ]\d{2}:\d{2}:\d{2}(?:[.,]\d+)?(?: ?(?:Z|[+-]\d{2}:?\d{2}))?|\d{2}/[A-Z][a-z]{2}/\d{4}:\d{2}:\d{2}:\d{2} [+-]\d{4}|[A-Z][a-z]{2} +\d{1,2} \d{2}:\d{2}:\d{2})\]?[ \t]*(?:[-|:][ \t]+)?`)
+
+var timeLayouts = []string{
+	time.RFC3339Nano,
+	"2006-01-02T15:04:05Z0700",
+	"2006-01-02T15:04:05",
+	"02/Jan/2006:15:04:05 -0700",
+	"Jan _2 15:04:05",
+	time.RFC1123Z,
+	time.RFC1123,
+	time.UnixDate,
+	time.ANSIC,
+}
+
+// parseLogTime reads the usual log timestamps; times without a zone are local.
+func parseLogTime(s string, now time.Time) (time.Time, bool) {
+	s = strings.TrimSpace(s)
+	if s == "" {
+		return time.Time{}, false
+	}
+	if s[0] >= '0' && s[0] <= '9' && !strings.ContainsAny(s, ":/-") {
+		if whole, _, _ := strings.Cut(s, "."); len(whole) < 9 {
+			return time.Time{}, false // not a Unix time of this century
+		}
+		return epochTime(s)
+	}
+	// 2006/01/02 15:04:05,123 +02:00 -> 2006-01-02T15:04:05.123+02:00
+	if len(s) >= 19 && s[4] == '/' && s[7] == '/' {
+		s = s[:4] + "-" + s[5:7] + "-" + s[8:]
+	}
+	if len(s) >= 19 && s[4] == '-' && s[10] == ' ' {
+		s = s[:10] + "T" + s[11:]
+	}
+	if len(s) > 19 && s[4] == '-' {
+		s = s[:19] + strings.Replace(strings.Replace(s[19:], ",", ".", 1), " ", "", 1)
+	}
+	s = strings.Join(strings.Fields(s), " ") // "Jan  5" -> "Jan 5"
+	for _, layout := range timeLayouts {
+		if layout == "Jan _2 15:04:05" {
+			layout = "Jan 2 15:04:05"
+		}
+		t, err := time.ParseInLocation(layout, s, time.Local)
+		if err != nil {
+			continue
+		}
+		if t.Year() == 0 { // syslog timestamps have no year
+			t = t.AddDate(now.Year(), 0, 0)
+			if t.After(now.Add(24 * time.Hour)) {
+				t = t.AddDate(-1, 0, 0)
+			}
+		}
+		return t, true
+	}
+	return time.Time{}, false
+}
+
+// epochTime reads a Unix time in seconds, milliseconds, microseconds or
+// nanoseconds (guessed from its size), with an optional fraction.
+func epochTime(s string) (time.Time, bool) {
+	f, err := strconv.ParseFloat(s, 64)
+	if err != nil || f <= 0 {
+		return time.Time{}, false
+	}
+	switch {
+	case f < 1e11:
+		return time.Unix(0, int64(f*1e9)), true
+	case f < 1e14:
+		return time.UnixMilli(int64(f)), true
+	case f < 1e17:
+		return time.UnixMicro(int64(f)), true
+	}
+	return time.Unix(0, int64(f)), true
+}
+
+/* ---------- Fields ---------- */
+
+// reservedFields are stored by LogStream itself: fields of the logs with the
+// same name are renamed field_<name>.
+var reservedFields = map[string]bool{
+	"_time": true, "_msg": true, "_stream": true, "_stream_id": true, "received": true, "msg_time": true,
+	"host": true, "host_name": true, "host_ip": true, "app": true, "facility": true, "severity": true,
+	"sevnum": true, "source": true, "proto": true, "procid": true, "sd": true, "source_type": true, "log_file": true,
+}
+
+func fieldName(k string) string {
+	k = strings.Map(func(r rune) rune {
+		if r == '_' || r == '.' || r == '-' || r >= '0' && r <= '9' || r >= 'a' && r <= 'z' || r >= 'A' && r <= 'Z' {
+			return r
+		}
+		return '_'
+	}, k)
+	if k == "" || reservedFields[k] || k[0] == '_' {
+		k = "field_" + strings.TrimLeft(k, "_")
+	}
+	return k
+}
+
+func (r *fileRec) set(k, v string) {
+	if v == "" {
+		return
+	}
+	if r.fields == nil {
+		r.fields = map[string]string{}
+	}
+	k = fieldName(k)
+	if _, ok := r.fields[k]; !ok && len(r.fields) >= maxFileFields {
+		return
+	}
+	if len(v) > maxFieldValue {
+		v = strings.ToValidUTF8(v[:maxFieldValue], "") + "…"
+	}
+	r.fields[k] = v
+}
+
+/* ---------- JSON lines ---------- */
+
+func decodeJSONLine(line string) (map[string]any, bool) {
+	s := strings.TrimSpace(line)
+	if len(s) < 2 || s[0] != '{' {
+		return nil, false
+	}
+	dec := json.NewDecoder(strings.NewReader(s))
+	dec.UseNumber()
+	var obj map[string]any
+	if dec.Decode(&obj) != nil {
+		return nil, false
+	}
+	return obj, true
+}
+
+var (
+	jsonMsgKeys   = []string{"msg", "message", "@message", "log", "text"}
+	jsonTimeKeys  = []string{"time", "ts", "timestamp", "@timestamp", "@t", "t", "datetime", "date"}
+	jsonLevelKeys = []string{"level", "lvl", "severity", "log.level", "@level", "@l", "loglevel", "levelname"}
+)
+
+// takeString removes the first of keys found in obj and returns it as text.
+func takeString(obj map[string]any, keys []string) (string, bool) {
+	for _, k := range keys {
+		if v, ok := obj[k]; ok {
+			if s := scalarString(v); s != "" {
+				delete(obj, k)
+				return s, true
+			}
+		}
+	}
+	return "", false
+}
+
+func scalarString(v any) string {
+	switch v := v.(type) {
+	case string:
+		return v
+	case json.Number:
+		return v.String()
+	case bool:
+		return strconv.FormatBool(v)
+	}
+	return ""
+}
+
+func jsonRec(obj map[string]any, line string, now time.Time) *fileRec {
+	r := &fileRec{t: now, sev: 6, msg: line}
+	for _, k := range jsonTimeKeys {
+		if t, ok := parseLogTime(scalarString(obj[k]), now); ok {
+			r.t, r.dated = t, true
+			delete(obj, k)
+			break
+		}
+	}
+	lvl, hasLevel := takeString(obj, jsonLevelKeys)
+	if hasLevel {
+		if n, ok := levelNum(lvl); ok {
+			r.sev = n
+		} else if n, err := strconv.Atoi(lvl); err == nil {
+			r.sev = numericLevel(n)
+		} else {
+			r.set("level", lvl)
+		}
+	}
+	if s, ok := takeString(obj, jsonMsgKeys); ok {
+		r.msg = strings.TrimRight(s, "\n")
+	}
+	flattenJSON("", obj, r)
+	if !hasLevel {
+		if n, ok := detectLevel(r.msg); ok {
+			r.sev = n
+		}
+	}
+	return r
+}
+
+// numericLevel maps numeric levels: syslog (0-7) or pino/bunyan (10-60).
+func numericLevel(n int) int {
+	switch {
+	case n >= 0 && n <= 7:
+		return n
+	case n >= 60:
+		return 2
+	case n >= 50:
+		return 3
+	case n >= 40:
+		return 4
+	case n >= 30:
+		return 6
+	}
+	return 7
+}
+
+// flattenJSON stores the remaining keys as fields; nested objects give
+// dotted names, arrays stay in JSON.
+func flattenJSON(prefix string, obj map[string]any, r *fileRec) {
+	for k, v := range obj {
+		name := prefix + k
+		switch v := v.(type) {
+		case map[string]any:
+			flattenJSON(name+".", v, r)
+		case []any:
+			b, _ := json.Marshal(v)
+			r.set(name, string(b))
+		case nil:
+		default:
+			r.set(name, scalarString(v))
+		}
+	}
+}
+
+/* ---------- logfmt ---------- */
+
+// parseLogfmt splits `k=v k2="v 2"` (with \" escapes); words without a value
+// are skipped. Nil when the line has no pair.
+func parseLogfmt(s string) [][2]string {
+	var out [][2]string
+	for i := 0; i < len(s); {
+		for i < len(s) && (s[i] == ' ' || s[i] == '\t') {
+			i++
+		}
+		start := i
+		for i < len(s) && s[i] != '=' && s[i] != ' ' && s[i] != '\t' {
+			i++
+		}
+		if i >= len(s) || s[i] != '=' || i == start {
+			for i < len(s) && s[i] != ' ' && s[i] != '\t' {
+				i++
+			}
+			continue
+		}
+		k := s[start:i]
+		i++
+		var v string
+		if i < len(s) && s[i] == '"' {
+			var b strings.Builder
+			i++
+			for i < len(s) && s[i] != '"' {
+				if s[i] == '\\' && i+1 < len(s) {
+					i++
+					switch s[i] {
+					case 'n':
+						b.WriteByte('\n')
+					case 't':
+						b.WriteByte('\t')
+					default:
+						b.WriteByte(s[i])
+					}
+				} else {
+					b.WriteByte(s[i])
+				}
+				i++
+			}
+			i++ // closing quote
+			v = b.String()
+		} else {
+			end := i
+			for end < len(s) && s[end] != ' ' && s[end] != '\t' {
+				end++
+			}
+			v, i = s[i:end], end
+		}
+		out = append(out, [2]string{k, v})
+	}
+	return out
+}
+
+func logfmtRec(kv [][2]string, line string, now time.Time) *fileRec {
+	obj := make(map[string]any, len(kv))
+	for _, p := range kv {
+		obj[p[0]] = p[1]
+	}
+	return jsonRec(obj, line, now)
+}
+
+/* ---------- Regular expression ---------- */
+
+func (p *fileParser) regexRec(m []string, line string, now time.Time) *fileRec {
+	r := &fileRec{t: now, sev: 6, msg: line}
+	hasLevel := false
+	for i, name := range p.re.SubexpNames() {
+		if i == 0 || name == "" || m[i] == "" {
+			continue
+		}
+		v := m[i]
+		switch strings.ToLower(name) {
+		case "time", "timestamp", "ts":
+			if t, ok := parseLogTime(v, now); ok {
+				r.t, r.dated = t, true
+			}
+		case "level", "severity", "lvl":
+			if n, ok := levelNum(v); ok {
+				r.sev, hasLevel = n, true
+			}
+		case "msg", "message":
+			r.msg = v
+		case "host":
+			r.host = v
+		case "app":
+			r.app = v
+		case "status":
+			r.set(name, v)
+			if n, ok := statusLevel(v); ok && !hasLevel {
+				r.sev, hasLevel = n, true
+			}
+		default:
+			r.set(name, v)
+		}
+	}
+	if !hasLevel {
+		if n, ok := detectLevel(r.msg); ok {
+			r.sev = n
+		}
+	}
+	return r
+}
+
+/* ---------- Access logs ---------- */
+
+// statusLevel: 5xx are errors, 4xx warnings, the rest info.
+func statusLevel(s string) (int, bool) {
+	n, err := strconv.Atoi(s)
+	if err != nil || n < 100 || n > 999 {
+		return 0, false
+	}
+	switch {
+	case n >= 500:
+		return 3, true
+	case n >= 400:
+		return 4, true
+	}
+	return 6, true
+}
+
+// clfRe: Common Log Format, the combined extension (referer, user agent) and
+// the Traefik one (request count, router, server URL, duration).
+var clfRe = regexp.MustCompile(`^(\S+) (\S+) (\S+) \[([^\]]+)\] "((?:[^"\\]|\\.)*)" (\d{3}) (\d+|-)(?: "((?:[^"\\]|\\.)*)" "((?:[^"\\]|\\.)*)")?(?: (\d+) "([^"]*)" "([^"]*)" (\d+)ms)?`)
+
+func clfRec(line string, now time.Time) *fileRec {
+	m := clfRe.FindStringSubmatch(line)
+	if m == nil {
+		return nil
+	}
+	r := &fileRec{t: now, sev: 6, msg: line}
+	if t, ok := parseLogTime(m[4], now); ok {
+		r.t, r.dated = t, true
+	}
+	dash := func(s string) string {
+		if s == "-" {
+			return ""
+		}
+		return s
+	}
+	r.set("client_ip", m[1])
+	r.set("http_user", dash(m[3]))
+	if req := strings.Fields(m[5]); len(req) == 3 {
+		r.set("http_method", req[0])
+		r.set("http_path", req[1])
+		r.set("http_proto", req[2])
+	} else {
+		r.set("http_request", m[5])
+	}
+	r.set("http_status", m[6])
+	r.set("http_size", dash(m[7]))
+	r.set("http_referer", dash(m[8]))
+	r.set("user_agent", dash(m[9]))
+	r.set("router", dash(m[11]))
+	r.set("backend", dash(m[12]))
+	r.set("duration_ms", m[13])
+	r.sev, _ = statusLevel(m[6])
+	return r
+}
+
+// traefikRec reads a Traefik access log line in JSON; nil for the other
+// lines (Traefik's own logs), read as generic JSON.
+func traefikRec(obj map[string]any, line string, now time.Time) *fileRec {
+	status := scalarString(obj["DownstreamStatus"])
+	if status == "" {
+		status = scalarString(obj["OriginStatus"])
+	}
+	method := scalarString(obj["RequestMethod"])
+	if status == "" && method == "" {
+		return nil
+	}
+	r := &fileRec{t: now, sev: 6}
+	if t, ok := parseLogTime(firstNonEmpty(scalarString(obj["StartUTC"]), scalarString(obj["time"])), now); ok {
+		r.t, r.dated = t, true
+	}
+	if n, ok := statusLevel(status); ok {
+		r.sev = n
+	}
+	rename := map[string]string{
+		"ClientHost": "client_ip", "ClientUsername": "http_user", "RequestMethod": "http_method",
+		"RequestHost": "http_host", "RequestPath": "http_path", "RequestProtocol": "http_proto",
+		"DownstreamStatus": "http_status", "DownstreamContentSize": "http_size", "OriginStatus": "origin_status",
+		"RouterName": "router", "ServiceName": "service", "ServiceURL": "backend", "entryPointName": "entrypoint",
+		"request_User-Agent": "user_agent", "request_Referer": "http_referer",
+	}
+	dur := ""
+	if d, err := strconv.ParseFloat(scalarString(obj["Duration"]), 64); err == nil {
+		dur = strconv.FormatFloat(d/1e6, 'f', -1, 64)
+		r.set("duration_ms", dur)
+	}
+	for _, k := range []string{"Duration", "StartUTC", "StartLocal", "time", "level", "msg"} {
+		delete(obj, k)
+	}
+	for k, v := range obj {
+		if to, ok := rename[k]; ok {
+			r.set(to, scalarString(v))
+			delete(obj, k)
+		}
+	}
+	flattenJSON("", obj, r)
+	// "GET example.com/path 404 · 12.5 ms · router@docker"
+	var b strings.Builder
+	b.WriteString(firstNonEmpty(method, "-"))
+	b.WriteByte(' ')
+	b.WriteString(r.fields["http_host"])
+	b.WriteString(r.fields["http_path"])
+	b.WriteByte(' ')
+	b.WriteString(firstNonEmpty(status, "-"))
+	if dur != "" {
+		b.WriteString(" · " + dur + " ms")
+	}
+	if rt := r.fields["router"]; rt != "" {
+		b.WriteString(" · " + rt)
+	}
+	if ip := r.fields["client_ip"]; ip != "" {
+		b.WriteString(" · " + ip)
+	}
+	r.msg = b.String()
+	return r
+}
+
+/* ---------- Detection ---------- */
+
+const detectWindow = 64 << 10
+
+// sampleLines returns the last complete lines of a file (50 at most).
+func sampleLines(path string) ([]string, error) {
+	fh, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
+	defer fh.Close()
+	fi, err := fh.Stat()
+	if err != nil {
+		return nil, err
+	}
+	off := fi.Size() - detectWindow
+	if off < 0 {
+		off = 0
+	}
+	buf, err := io.ReadAll(io.NewSectionReader(fh, off, detectWindow))
+	if err != nil {
+		return nil, err
+	}
+	end := bytes.LastIndexByte(buf, '\n')
+	if end < 0 {
+		return nil, nil
+	}
+	buf = buf[:end]
+	if off > 0 { // first line cut by the window
+		if nl := bytes.IndexByte(buf, '\n'); nl >= 0 {
+			buf = buf[nl+1:]
+		} else {
+			return nil, nil
+		}
+	}
+	var lines []string
+	for _, b := range bytes.Split(buf, []byte{'\n'}) {
+		if len(bytes.TrimSpace(b)) > 0 {
+			lines = append(lines, string(bytes.TrimRight(b, "\r")))
+		}
+	}
+	if len(lines) > 50 {
+		lines = lines[len(lines)-50:]
+	}
+	return lines, nil
+}
+
+// logfmtKeys: the pairs have one of the usual logfmt keys.
+func logfmtKeys(kv [][2]string) bool {
+	for _, p := range kv {
+		switch strings.ToLower(p[0]) {
+		case "level", "lvl", "msg", "message", "time", "ts", "t":
+			return true
+		}
+	}
+	return false
+}
+
+// detectFormat guesses the format of a file from some of its lines: the
+// structured format most lines follow, else plain text (a regular
+// expression is never guessed).
+func detectFormat(lines []string) string {
+	var js, traefik, clf, logfmt int
+	for _, l := range lines {
+		l = strings.TrimSpace(l)
+		if obj, ok := decodeJSONLine(l); ok {
+			js++
+			if _, ok := obj["RequestMethod"]; ok {
+				traefik++
+			} else if _, ok := obj["DownstreamStatus"]; ok {
+				traefik++
+			}
+			continue
+		}
+		if clfRe.MatchString(l) {
+			clf++
+			continue
+		}
+		if kv := parseLogfmt(l); len(kv) >= 3 && logfmtKeys(kv) {
+			logfmt++
+		}
+	}
+	most := func(n int) bool { return n > 0 && n*5 >= len(lines)*4 } // 80 %
+	switch {
+	case most(js) && traefik*2 >= js:
+		return fmtTraefik
+	case most(js):
+		return fmtJSON
+	case most(clf):
+		return fmtCLF
+	case most(logfmt):
+		return fmtLogfmt
+	}
+	return fmtText
+}
@@ -0,0 +1,711 @@
+package main
+
+import (
+	"bytes"
+	"context"
+	"crypto/rand"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"io/fs"
+	"os"
+	"path/filepath"
+	"regexp"
+	"strings"
+	"sync"
+	"time"
+)
+
+// fileSourceDef is one log file declared in Settings > Sources.
+type fileSourceDef struct {
+	ID      string `json:"id"`
+	Name    string `json:"name"`            // app of the entries
+	Path    string `json:"path"`            // the file, as mounted in the container
+	Format  string `json:"format"`          // auto (detected), or text, json, logfmt, regex, clf, traefik
+	Regex   string `json:"regex,omitempty"` // format regex: named groups time, level, msg, host, app…
+	Host    string `json:"host,omitempty"`  // host of the entries (empty: the host name of the machine)
+	Enabled bool   `json:"enabled"`
+}
+
+// filesConfig is saved in /data/files.json.
+type filesConfig struct {
+	Sources []fileSourceDef `json:"sources"`
+}
+
+// filePos is where reading resumes in a file: its inode and an offset before
+// which every entry was sent. Until: end of the history found when the
+// source was turned on; entries before it are kept only when dated within
+// FILES_BACKFILL.
+type filePos struct {
+	Ino   uint64 `json:"ino"`
+	Off   int64  `json:"off"`
+	Until int64  `json:"until,omitempty"`
+}
+
+type filesState struct {
+	Pos     map[string]filePos   `json:"pos"`     // by source id
+	Started map[string]time.Time `json:"started"` // when each source was turned on
+}
+
+type fileSourceStatus struct {
+	Open     bool
+	Read     uint64
+	Detected string // format found when the source is in auto
+	Behind   int64  // bytes left to read (history being read)
+	Code     string
+	Error    string
+}
+
+// fileSource is a definition with its parser (nil in auto: detected from
+// the file).
+type fileSource struct {
+	fileSourceDef
+	parser *fileParser
+}
+
+// pendingEntry is an entry waiting for its continuation lines.
+type pendingEntry struct {
+	rec     *fileRec
+	off     int64     // offset of its first line
+	seen    time.Time // when its last line was read
+	history bool      // read from the history found when the source was turned on
+	lines   int
+}
+
+// fileTail is the reading state of one file, owned by the Run goroutine.
+type fileTail struct {
+	readOff int64 // where the next read starts (after the lines of the pending entry)
+	known   bool  // readOff is set
+	pending *pendingEntry
+	auto    *fileParser // format detected from the file, in auto
+	behind  int64       // bytes left to read after the last poll
+}
+
+// Files follows log files of other programs (Traefik, nginx, applications…)
+// mounted in the container, one entry per line in the format detected or
+// chosen for each file. Source type "file".
+type Files struct {
+	sink      func(*Entry)
+	hostName  string
+	backfill  time.Duration
+	cfgPath   string
+	statePath string
+	wake      chan struct{}
+
+	// Owned by the Run goroutine.
+	st    filesState
+	tails map[string]*fileTail
+	dirty bool
+
+	mu       sync.Mutex
+	cfg      []*fileSource
+	resets   map[string]bool // sources to read again from FILES_BACKFILL ago
+	redetect map[string]bool // sources whose format changed
+	status   map[string]*fileSourceStatus
+}
+
+func NewFiles(hostRoot, dataDir string, backfill time.Duration, sink func(*Entry)) *Files {
+	f := &Files{
+		sink:      sink,
+		hostName:  readTrim(filepath.Join(hostRoot, "etc/hostname")),
+		backfill:  backfill,
+		cfgPath:   filepath.Join(dataDir, "files.json"),
+		statePath: filepath.Join(dataDir, "files-state.json"),
+		wake:      make(chan struct{}, 1),
+		tails:     map[string]*fileTail{},
+		resets:    map[string]bool{},
+		redetect:  map[string]bool{},
+		status:    map[string]*fileSourceStatus{},
+	}
+	if f.hostName == "" {
+		f.hostName = "localhost"
+	}
+	var cfg filesConfig
+	if b, err := os.ReadFile(f.cfgPath); err == nil {
+		_ = json.Unmarshal(b, &cfg)
+	}
+	for _, d := range cfg.Sources {
+		src, err := compileFileSource(d)
+		if err != nil {
+			logEvent("files", 4, "file %q ignored: %v", d.Name, err)
+			continue
+		}
+		f.cfg = append(f.cfg, src)
+	}
+	if b, err := os.ReadFile(f.statePath); err == nil {
+		_ = json.Unmarshal(b, &f.st)
+	}
+	if f.st.Pos == nil {
+		f.st.Pos = map[string]filePos{}
+	}
+	if f.st.Started == nil {
+		f.st.Started = map[string]time.Time{}
+	}
+	return f
+}
+
+const maxFileSources = 50
+
+var fileIDRe = regexp.MustCompile(`^[0-9a-f]{1,32}$`)
+
+// checkFilePath: one file, absolute, without wildcards.
+func checkFilePath(p string) (string, error) {
+	p = strings.TrimSpace(p)
+	switch {
+	case !filepath.IsAbs(p):
+		return "", errors.New("the path must be absolute (as mounted in the container)")
+	case strings.ContainsAny(p, "*?["):
+		return "", errors.New("give the path of one file (no wildcards)")
+	}
+	return filepath.Clean(p), nil
+}
+
+// compileFileSource checks a definition and builds its parser.
+func compileFileSource(d fileSourceDef) (*fileSource, error) {
+	d.Name = strings.TrimSpace(d.Name)
+	d.Host = strings.TrimSpace(d.Host)
+	if d.Format == "" {
+		d.Format = fmtAuto
+	}
+	if d.Format != fmtRegex {
+		d.Regex = ""
+	}
+	switch {
+	case !fileIDRe.MatchString(d.ID):
+		return nil, errors.New("invalid id")
+	case d.Name == "" || len(d.Name) > 64:
+		return nil, errors.New("the name is required (64 characters at most)")
+	case len(d.Host) > 253:
+		return nil, fmt.Errorf("%s: host name too long", d.Name)
+	}
+	p, err := checkFilePath(d.Path)
+	if err != nil {
+		return nil, fmt.Errorf("%s: %v", d.Name, err)
+	}
+	d.Path = p
+	src := &fileSource{fileSourceDef: d}
+	if d.Format != fmtAuto {
+		if src.parser, err = newFileParser(d.Format, d.Regex); err != nil {
+			return nil, fmt.Errorf("%s: %v", d.Name, err)
+		}
+	}
+	return src, nil
+}
+
+func newFileID() string {
+	b := make([]byte, 6)
+	_, _ = rand.Read(b)
+	return hex.EncodeToString(b)
+}
+
+// Configure checks, saves and applies the list of files. Files turned off,
+// removed or given another path are read again from FILES_BACKFILL ago the
+// next time they are on.
+func (f *Files) Configure(cfg filesConfig) error {
+	if len(cfg.Sources) > maxFileSources {
+		return fmt.Errorf("%d files at most", maxFileSources)
+	}
+	var srcs []*fileSource
+	ids := map[string]bool{}
+	for _, d := range cfg.Sources {
+		if d.ID == "" {
+			d.ID = newFileID()
+		}
+		if ids[d.ID] {
+			return fmt.Errorf("duplicate id %s", d.ID)
+		}
+		ids[d.ID] = true
+		src, err := compileFileSource(d)
+		if err != nil {
+			return err
+		}
+		srcs = append(srcs, src)
+	}
+	saved := filesConfig{Sources: []fileSourceDef{}}
+	for _, s := range srcs {
+		saved.Sources = append(saved.Sources, s.fileSourceDef)
+	}
+	if err := writeJSONFile(f.cfgPath, saved); err != nil {
+		return err
+	}
+	f.mu.Lock()
+	old := map[string]*fileSource{}
+	for _, s := range f.cfg {
+		old[s.ID] = s
+	}
+	for _, s := range srcs {
+		o := old[s.ID]
+		if o != nil && ((o.Enabled && !s.Enabled) || o.Path != s.Path) {
+			f.resets[s.ID] = true
+			delete(f.status, s.ID)
+		}
+		if o != nil && (o.Format != s.Format || o.Regex != s.Regex) {
+			f.redetect[s.ID] = true
+		}
+		delete(old, s.ID)
+	}
+	for id := range old { // removed
+		f.resets[id] = true
+		delete(f.status, id)
+	}
+	f.cfg = srcs
+	f.mu.Unlock()
+	select {
+	case f.wake <- struct{}{}:
+	default:
+	}
+	return nil
+}
+
+// Status is the state shown in Settings > Sources.
+func (f *Files) Status() map[string]any {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	list := make([]map[string]any, 0, len(f.cfg))
+	for _, s := range f.cfg {
+		m := map[string]any{
+			"id": s.ID, "name": s.Name, "path": s.Path, "format": s.Format, "regex": s.Regex,
+			"host": s.Host, "enabled": s.Enabled, "open": false, "read": 0, "detected": "", "behind": 0, "code": "", "error": "",
+		}
+		if st := f.status[s.ID]; st != nil && s.Enabled {
+			m["open"], m["read"], m["detected"], m["code"], m["error"] = st.Open, st.Read, st.Detected, st.Code, st.Error
+			m["behind"] = st.Behind
+		}
+		list = append(list, m)
+	}
+	return map[string]any{"sources": list, "defaultHost": f.hostName}
+}
+
+// Run polls the files every second.
+func (f *Files) Run(ctx context.Context) {
+	tick := time.NewTicker(time.Second)
+	defer tick.Stop()
+	n := 0
+	for {
+		select {
+		case <-ctx.Done():
+			now := time.Now()
+			for id := range f.tails {
+				f.flushPending(id, now)
+			}
+			f.checkpointAll()
+			f.saveState()
+			return
+		case <-tick.C:
+		case <-f.wake:
+		}
+		f.poll(time.Now())
+		if n++; n%5 == 0 {
+			f.saveState()
+		}
+	}
+}
+
+func (f *Files) saveState() {
+	if !f.dirty {
+		return
+	}
+	f.dirty = false
+	if err := writeJSONFile(f.statePath, f.st); err != nil {
+		logEvent("files", 4, "saving positions: %v", err)
+	}
+}
+
+// poll reads what was added to every file that is on.
+func (f *Files) poll(now time.Time) {
+	f.mu.Lock()
+	srcs := f.cfg
+	resets, redetect := f.resets, f.redetect
+	f.resets, f.redetect = map[string]bool{}, map[string]bool{}
+	f.mu.Unlock()
+	for id := range resets {
+		delete(f.st.Pos, id)
+		delete(f.st.Started, id)
+		delete(f.tails, id)
+		f.dirty = true
+	}
+	for id := range redetect {
+		if tl := f.tails[id]; tl != nil {
+			tl.auto = nil
+		}
+	}
+	active := map[string]bool{}
+	for _, s := range srcs {
+		if !s.Enabled {
+			continue
+		}
+		active[s.ID] = true
+		f.setStatus(s.ID, f.pollFile(s, now))
+	}
+	// Files turned off: their position is kept until the next poll forgets it.
+	for id := range f.tails {
+		if !active[id] {
+			delete(f.tails, id)
+		}
+	}
+	f.checkpointAll()
+}
+
+const (
+	maxFileRead       = 4 << 20         // per read
+	maxFileReads      = 16              // reads per file and per poll (64 MB)
+	fileContinueDelay = 2 * time.Second // an entry waits this long for continuation lines
+)
+
+func (f *Files) setStatus(id string, err error) {
+	code, detail := "", ""
+	if err != nil {
+		code, detail = errCode(err), err.Error()
+		if errors.Is(err, fs.ErrNotExist) {
+			code = "not_found"
+		}
+	}
+	detected := ""
+	if tl := f.tails[id]; tl != nil && tl.auto != nil {
+		detected = tl.auto.format
+	}
+	f.mu.Lock()
+	st := f.status[id]
+	if st == nil {
+		st = &fileSourceStatus{}
+		f.status[id] = st
+	}
+	changed := code != st.Code
+	st.Open, st.Detected, st.Code, st.Error = err == nil, detected, code, detail
+	st.Behind = 0
+	if tl := f.tails[id]; tl != nil && err == nil {
+		st.Behind = tl.behind
+	}
+	name := id
+	for _, s := range f.cfg {
+		if s.ID == id {
+			name = s.Name
+		}
+	}
+	f.mu.Unlock()
+	if changed && code != "" && code != "not_found" {
+		logEvent("files", 4, "cannot read the file %s: %v", name, err)
+	}
+}
+
+func (f *Files) count(id string) {
+	f.mu.Lock()
+	st := f.status[id]
+	if st == nil { // first poll of the file: its status comes after
+		st = &fileSourceStatus{}
+		f.status[id] = st
+	}
+	st.Read++
+	f.mu.Unlock()
+}
+
+// parserOf is the parser of a file: the chosen format, or the one detected
+// from its last lines (nil while the file has none).
+func (f *Files) parserOf(s *fileSource, tl *fileTail, path string) *fileParser {
+	if s.parser != nil {
+		return s.parser
+	}
+	if tl.auto == nil {
+		lines, err := sampleLines(path)
+		if err != nil || len(lines) == 0 {
+			return nil
+		}
+		tl.auto, _ = newFileParser(detectFormat(lines), "")
+	}
+	return tl.auto
+}
+
+func (f *Files) pollFile(s *fileSource, now time.Time) error {
+	path := s.Path
+	first := false
+	if _, ok := f.st.Started[s.ID]; !ok {
+		f.st.Started[s.ID], f.dirty, first = now, true, true
+	}
+	fi, err := os.Stat(path)
+	if err != nil {
+		return err
+	}
+	if !fi.Mode().IsRegular() {
+		return fmt.Errorf("%s is not a regular file", path)
+	}
+	tl := f.tails[s.ID]
+	if tl == nil {
+		tl = &fileTail{}
+		f.tails[s.ID] = tl
+	}
+	ino := inodeOf(fi)
+	pos, known := f.st.Pos[s.ID]
+	if !known {
+		pos = filePos{Ino: ino}
+		if first {
+			// Turned on: the last FILES_BACKFILL of what is already there
+			// (0: only new lines), found by date rather than read from the
+			// start of a file that can hold months of logs.
+			pos.Off = fi.Size()
+			if p := f.parserOf(s, tl, path); f.backfill > 0 && p != nil {
+				pos.Off = backfillStart(path, p, fi.Size(), f.st.Started[s.ID].Add(-f.backfill), now)
+				pos.Until = fi.Size()
+			}
+		}
+		f.st.Pos[s.ID], f.dirty = pos, true
+	}
+	if !tl.known {
+		tl.readOff, tl.known = pos.Off, true
+	}
+	if pos.Ino != ino {
+		// Rotated (access.log -> access.log.1): finish the old file, then
+		// read the new one from its start.
+		if old, err := os.Stat(path + ".1"); err == nil && inodeOf(old) == pos.Ino {
+			if p := f.parserOf(s, tl, path+".1"); p != nil {
+				for {
+					next, more, err := f.readFrom(s, tl, p, path+".1", tl.readOff, pos.Until, now)
+					if err != nil || !more {
+						break
+					}
+					tl.readOff = next
+				}
+			}
+		}
+		f.flushPending(s.ID, now)
+		pos, tl.readOff = filePos{Ino: ino}, 0
+		f.st.Pos[s.ID], f.dirty = pos, true
+	} else if fi.Size() < tl.readOff {
+		f.flushPending(s.ID, now) // truncated (copytruncate)
+		pos.Until, tl.readOff = 0, 0
+		f.st.Pos[s.ID], f.dirty = pos, true
+	}
+	if fi.Size() > tl.readOff {
+		p := f.parserOf(s, tl, path)
+		if p == nil {
+			return nil // nothing complete to detect the format from yet
+		}
+		for i := 0; i < maxFileReads; i++ {
+			next, more, err := f.readFrom(s, tl, p, path, tl.readOff, pos.Until, now)
+			if err != nil {
+				return err
+			}
+			tl.readOff = next
+			if !more {
+				break
+			}
+		}
+	}
+	tl.behind = max(fi.Size()-tl.readOff, 0)
+	if pe := tl.pending; pe != nil && now.Sub(pe.seen) >= fileContinueDelay {
+		f.flushPending(s.ID, now)
+	}
+	return nil
+}
+
+// backfillStart finds where the lines dated notBefore or later start, by
+// bisection on the dates of the lines (logs are written in order). Undated
+// lines are left out of the history anyway: then only new lines are read.
+func backfillStart(path string, p *fileParser, size int64, notBefore, now time.Time) int64 {
+	fh, err := os.Open(path)
+	if err != nil {
+		return size
+	}
+	defer fh.Close()
+	buf := make([]byte, 64<<10)
+	// lineAt reads the first line starting at or after off (off itself when
+	// it is 0): its start and its date.
+	lineAt := func(off int64) (int64, time.Time, bool) {
+		n, _ := fh.ReadAt(buf, off)
+		b := buf[:n]
+		start := off
+		if off > 0 {
+			nl := bytes.IndexByte(b, '\n')
+			if nl < 0 {
+				return size, time.Time{}, false
+			}
+			b, start = b[nl+1:], off+int64(nl)+1
+		}
+		end := bytes.IndexByte(b, '\n')
+		if end < 0 {
+			return size, time.Time{}, false
+		}
+		r := p.parse(string(b[:end]), now)
+		return start, r.t, r.dated
+	}
+	if _, t, ok := lineAt(0); !ok || !t.Before(notBefore) {
+		if !ok {
+			// No date on the first line: try the last ones.
+			if _, _, ok := lineAt(max(size-int64(len(buf)), 0)); !ok {
+				return size
+			}
+		} else {
+			return 0 // all of it is recent
+		}
+	}
+	lo, hi := int64(0), size // line at lo: before notBefore; at hi: not
+	for hi-lo > int64(len(buf)) {
+		mid := lo + (hi-lo)/2
+		_, t, ok := lineAt(mid)
+		if ok && t.Before(notBefore) {
+			lo = mid
+		} else {
+			hi = mid
+		}
+	}
+	start, _, _ := lineAt(lo)
+	return min(start, size)
+}
+
+// readFrom parses the complete lines written after off and returns the new
+// offset; more tells whether the read window was full.
+func (f *Files) readFrom(s *fileSource, tl *fileTail, p *fileParser, path string, off, until int64, now time.Time) (int64, bool, error) {
+	fh, err := os.Open(path)
+	if err != nil {
+		return off, false, err
+	}
+	defer fh.Close()
+	buf, err := io.ReadAll(io.NewSectionReader(fh, off, maxFileRead))
+	if err != nil {
+		return off, false, err
+	}
+	full := len(buf) == maxFileRead
+	end := bytes.LastIndexByte(buf, '\n')
+	if end < 0 {
+		if !full {
+			return off, false, nil // partial line: wait for its end
+		}
+		end = len(buf) - 1 // line longer than the read window: cut it
+	}
+	start := off
+	for _, b := range bytes.Split(buf[:end], []byte{'\n'}) {
+		f.line(s, tl, p, string(b), start, start < until, now)
+		start += int64(len(b)) + 1
+	}
+	return off + int64(end) + 1, full, nil
+}
+
+// line handles one line: a continuation of the pending entry, or a new one.
+func (f *Files) line(s *fileSource, tl *fileTail, p *fileParser, line string, off int64, history bool, now time.Time) {
+	if strings.TrimSpace(line) == "" {
+		return
+	}
+	if pe := tl.pending; p.multiline() && pe != nil && p.continuation(line) {
+		if pe.lines < maxContinuation && len(pe.rec.msg) < maxFileMsg {
+			pe.rec.msg += "\n" + strings.TrimRight(cleanLine(line), " \t")
+			pe.lines++
+		}
+		pe.seen = now
+		return
+	}
+	f.flushPending(s.ID, now)
+	pe := &pendingEntry{rec: p.parse(line, now), off: off, seen: now, history: history}
+	if p.multiline() {
+		tl.pending = pe
+		return
+	}
+	f.emit(s, pe, now)
+}
+
+func (f *Files) flushPending(id string, now time.Time) {
+	tl := f.tails[id]
+	if tl == nil || tl.pending == nil {
+		return
+	}
+	pe := tl.pending
+	tl.pending = nil
+	f.mu.Lock()
+	var src *fileSource
+	for _, s := range f.cfg {
+		if s.ID == id {
+			src = s
+		}
+	}
+	f.mu.Unlock()
+	if src != nil {
+		f.emit(src, pe, now)
+	}
+}
+
+// emit sends an entry; history entries are kept only when dated within
+// FILES_BACKFILL of when the file was turned on.
+func (f *Files) emit(s *fileSource, pe *pendingEntry, now time.Time) {
+	r := pe.rec
+	if pe.history {
+		notBefore := f.st.Started[s.ID].Add(-f.backfill)
+		if !r.dated || r.t.Before(notBefore) {
+			return
+		}
+	}
+	if len(r.msg) > maxFileMsg {
+		r.msg = strings.ToValidUTF8(r.msg[:maxFileMsg], "") + "…"
+	}
+	extra := map[string]string{"log_file": s.Path}
+	for k, v := range r.fields {
+		extra[k] = v
+	}
+	f.sink(&Entry{
+		Time:       r.t,
+		Received:   now,
+		Host:       firstNonEmpty(r.host, s.Host, f.hostName),
+		App:        firstNonEmpty(r.app, s.Name),
+		SevNum:     r.sev,
+		Severity:   severityNames[r.sev],
+		Message:    r.msg,
+		Proto:      "file",
+		SourceType: "file",
+		Extra:      extra,
+		Wait:       true, // the file keeps the lines: wait for room in the queue
+	})
+	f.count(s.ID)
+}
+
+// checkpointAll saves, for each file, an offset before which every entry is
+// sent: the start of its pending entry, or the read offset.
+func (f *Files) checkpointAll() {
+	for id, tl := range f.tails {
+		pos, ok := f.st.Pos[id]
+		if !ok || !tl.known {
+			continue
+		}
+		off := tl.readOff
+		if pe := tl.pending; pe != nil && pe.off < off {
+			off = pe.off
+		}
+		if off != pos.Off {
+			pos.Off, f.dirty = off, true
+			f.st.Pos[id] = pos
+		}
+	}
+}
+
+// DetectFile tells, for the settings, whether a file can be read and its
+// format, with a line as example.
+func DetectFile(path string) map[string]any {
+	res := map[string]any{"format": "", "sample": "", "code": "", "error": ""}
+	p, err := checkFilePath(path)
+	if err != nil {
+		res["code"], res["error"] = "invalid", err.Error()
+		return res
+	}
+	var lines []string
+	if fi, err2 := os.Stat(p); err2 != nil {
+		err = err2
+	} else if !fi.Mode().IsRegular() {
+		err = fmt.Errorf("%s is not a regular file", p)
+	} else {
+		lines, err = sampleLines(p)
+	}
+	switch {
+	case errors.Is(err, fs.ErrNotExist):
+		res["code"], res["error"] = "not_found", err.Error()
+	case err != nil:
+		res["code"], res["error"] = errCode(err), err.Error()
+	case len(lines) == 0:
+		res["code"] = "empty"
+	default:
+		res["format"] = detectFormat(lines)
+		sample := lines[len(lines)-1]
+		if len(sample) > 300 {
+			sample = strings.ToValidUTF8(sample[:300], "") + "…"
+		}
+		res["sample"] = cleanLine(sample)
+	}
+	return res
+}
@@ -0,0 +1,427 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+)
+
+func mustParser(t *testing.T, format, expr string) *fileParser {
+	t.Helper()
+	p, err := newFileParser(format, expr)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return p
+}
+
+func TestParseLogTime(t *testing.T) {
+	now := time.Date(2026, 10, 5, 12, 0, 0, 0, time.UTC)
+	utc := func(s string) time.Time { t, _ := time.Parse(time.RFC3339Nano, s); return t }
+	tests := []struct {
+		in   string
+		want time.Time
+	}{
+		{"2026-10-05T10:00:00.123Z", utc("2026-10-05T10:00:00.123Z")},
+		{"2026-10-05T10:00:00+02:00", utc("2026-10-05T08:00:00Z")},
+		{"2026-10-05 10:00:00,250 +0200", utc("2026-10-05T08:00:00.25Z")},
+		{"2026/10/05 10:00:00Z", utc("2026-10-05T10:00:00Z")},
+		{"05/Oct/2026:10:00:00 +0200", utc("2026-10-05T08:00:00Z")},
+		{"1759572000", time.Unix(1759572000, 0)},
+		{"1759572000123", time.UnixMilli(1759572000123)},
+	}
+	for _, tt := range tests {
+		got, ok := parseLogTime(tt.in, now)
+		if !ok || !got.Equal(tt.want) {
+			t.Errorf("%q: got %v %v, want %v", tt.in, got, ok, tt.want)
+		}
+	}
+	// Syslog timestamps: no year, the last one before tomorrow.
+	if got, ok := parseLogTime("Dec 31 23:00:00", now); !ok || got.Year() != 2025 {
+		t.Errorf("Dec 31: %v %v", got, ok)
+	}
+	if got, ok := parseLogTime("Oct  5 11:00:00", now); !ok || got.Year() != 2026 || got.Day() != 5 {
+		t.Errorf("Oct 5: %v %v", got, ok)
+	}
+	for _, bad := range []string{"", "hello", "200", "12345"} {
+		if _, ok := parseLogTime(bad, now); ok {
+			t.Errorf("%q parsed", bad)
+		}
+	}
+}
+
+func TestParseText(t *testing.T) {
+	now := time.Now()
+	p := mustParser(t, fmtText, "")
+	r := p.parse("2026-10-05 10:00:00.5 ERROR db: connection refused", now)
+	if !r.dated || r.msg != "ERROR db: connection refused" || r.sev != 3 {
+		t.Errorf("got %+v", r)
+	}
+	r = p.parse("[2026-10-05T10:00:00Z] - started", now)
+	if !r.dated || r.msg != "started" || r.sev != 6 {
+		t.Errorf("got %+v", r)
+	}
+	r = p.parse("\x1b[33mWARN\x1b[0m no timestamp here", now)
+	if r.dated || r.msg != "WARN no timestamp here" || r.sev != 4 || !r.t.Equal(now) {
+		t.Errorf("got %+v", r)
+	}
+}
+
+func TestParseJSON(t *testing.T) {
+	now := time.Now()
+	p := mustParser(t, fmtJSON, "")
+	r := p.parse(`{"time":"2026-10-05T10:00:00Z","level":"warn","msg":"slow query","host":"db.example","req":{"id":7,"tags":["a"]},"ok":true}`, now)
+	if !r.dated || r.sev != 4 || r.msg != "slow query" {
+		t.Errorf("got %+v", r)
+	}
+	for k, want := range map[string]string{"field_host": "db.example", "req.id": "7", "req.tags": `["a"]`, "ok": "true"} {
+		if r.fields[k] != want {
+			t.Errorf("%s = %q, want %q", k, r.fields[k], want)
+		}
+	}
+	// pino: numeric level, epoch in ms.
+	r = p.parse(`{"level":50,"time":1759572000123,"msg":"boom"}`, now)
+	if r.sev != 3 || !r.t.Equal(time.UnixMilli(1759572000123)) {
+		t.Errorf("got %+v", r)
+	}
+	// No message key: the whole line; not JSON: text.
+	line := `{"event":"login","user":"bob"}`
+	if r = p.parse(line, now); r.msg != line || r.fields["user"] != "bob" {
+		t.Errorf("got %+v", r)
+	}
+	if r = p.parse("plain ERROR line", now); r.msg != "plain ERROR line" || r.sev != 3 {
+		t.Errorf("got %+v", r)
+	}
+}
+
+func TestParseLogfmt(t *testing.T) {
+	p := mustParser(t, fmtLogfmt, "")
+	r := p.parse(`time="2026-10-05T10:00:00Z" level=error msg="Cannot connect: \"docker\" down" providerName=docker flag`, time.Now())
+	if !r.dated || r.sev != 3 || r.msg != `Cannot connect: "docker" down` || r.fields["providerName"] != "docker" {
+		t.Errorf("got %+v", r)
+	}
+}
+
+func TestParseRegex(t *testing.T) {
+	if _, err := newFileParser(fmtRegex, "("); err == nil {
+		t.Error("invalid regex accepted")
+	}
+	if _, err := newFileParser(fmtRegex, ""); err == nil {
+		t.Error("empty regex accepted")
+	}
+	p := mustParser(t, fmtRegex, `^(?P<time>\S+ \S+) \[(?P<level>\w+)\] (?P<module>[\w.]+): (?P<msg>.*)$`)
+	r := p.parse("2026-10-05 10:00:00 [warning] app.db: pool exhausted", time.Now())
+	if !r.dated || r.sev != 4 || r.msg != "pool exhausted" || r.fields["module"] != "app.db" {
+		t.Errorf("got %+v", r)
+	}
+	if !p.continuation("Traceback (most recent call last):") || p.continuation("2026-10-05 10:00:01 [info] a: b") {
+		t.Error("continuation")
+	}
+}
+
+func TestParseCLF(t *testing.T) {
+	p := mustParser(t, fmtCLF, "")
+	r := p.parse(`203.0.113.9 - - [05/Oct/2026:10:00:00 +0200] "GET /api/x?y=1 HTTP/1.1" 502 157 "-" "curl/8.0" 4211 "api@docker" "http://172.18.0.5:8080" 31ms`, time.Now())
+	if !r.dated || r.sev != 3 || !strings.HasPrefix(r.msg, "203.0.113.9 - - [") {
+		t.Errorf("got %+v", r)
+	}
+	for k, want := range map[string]string{"client_ip": "203.0.113.9", "http_method": "GET", "http_path": "/api/x?y=1", "http_status": "502",
+		"user_agent": "curl/8.0", "router": "api@docker", "backend": "http://172.18.0.5:8080", "duration_ms": "31"} {
+		if r.fields[k] != want {
+			t.Errorf("%s = %q, want %q", k, r.fields[k], want)
+		}
+	}
+	if _, ok := r.fields["http_referer"]; ok {
+		t.Error("empty referer kept")
+	}
+	// nginx combined, 404.
+	r = p.parse(`10.0.0.1 - alice [05/Oct/2026:10:00:00 +0000] "POST /login HTTP/2.0" 404 0 "https://example.com/" "Mozilla/5.0"`, time.Now())
+	if r.sev != 4 || r.fields["http_user"] != "alice" || r.fields["http_referer"] != "https://example.com/" {
+		t.Errorf("got %+v", r)
+	}
+}
+
+func TestParseTraefikJSON(t *testing.T) {
+	p := mustParser(t, fmtTraefik, "")
+	r := p.parse(`{"ClientHost":"203.0.113.9","DownstreamStatus":200,"Duration":12500000,"RequestHost":"app.example.com","RequestMethod":"GET","RequestPath":"/","RequestProtocol":"HTTP/2.0","RouterName":"app@docker","StartUTC":"2026-10-05T10:00:00.1Z","entryPointName":"websecure","level":"info","msg":"","time":"2026-10-05T10:00:00Z","TLSVersion":"1.3"}`, time.Now())
+	if !r.dated || r.sev != 6 || r.msg != "GET app.example.com/ 200 · 12.5 ms · app@docker · 203.0.113.9" {
+		t.Errorf("got %+v", r)
+	}
+	for k, want := range map[string]string{"entrypoint": "websecure", "http_status": "200", "TLSVersion": "1.3", "duration_ms": "12.5"} {
+		if r.fields[k] != want {
+			t.Errorf("%s = %q, want %q", k, r.fields[k], want)
+		}
+	}
+	// Traefik's own logs in the same file: generic JSON.
+	r = p.parse(`{"level":"error","msg":"Provider error","time":"2026-10-05T10:00:00Z"}`, time.Now())
+	if r.sev != 3 || r.msg != "Provider error" {
+		t.Errorf("got %+v", r)
+	}
+}
+
+func TestDetectFormat(t *testing.T) {
+	tests := map[string][]string{
+		fmtJSON:    {`{"level":"info","msg":"a"}`, `{"level":"warn","msg":"b"}`},
+		fmtTraefik: {`{"RequestMethod":"GET","DownstreamStatus":200}`, `{"level":"info","msg":"Configuration loaded"}`},
+		fmtCLF:     {`10.0.0.1 - - [05/Oct/2026:10:00:00 +0000] "GET / HTTP/1.1" 200 12 "-" "curl"`},
+		fmtLogfmt:  {`time="2026-10-05T10:00:00Z" level=info msg="Starting provider" providerName=docker`},
+		fmtText:    {`2026-10-05 10:00:00 INFO started`, `user=bob logged in`},
+	}
+	for want, lines := range tests {
+		if got := detectFormat(lines); got != want {
+			t.Errorf("%q: got %s, want %s", lines, got, want)
+		}
+	}
+	// A few lines of another format do not change the answer (80 %).
+	lines := []string{`{"a":1}`, `{"a":2}`, `{"a":3}`, `{"a":4}`, `not json`}
+	if got := detectFormat(lines); got != fmtJSON {
+		t.Errorf("got %s", got)
+	}
+	lines = append(lines, `still not json`)
+	if got := detectFormat(lines); got != fmtText {
+		t.Errorf("got %s", got)
+	}
+}
+
+func TestDetectFile(t *testing.T) {
+	dir := t.TempDir()
+	path := filepath.Join(dir, "access.log")
+	appendFile(t, path, `10.0.0.1 - - [05/Oct/2026:10:00:00 +0000] "GET / HTTP/1.1" 200 12 "-" "curl"`+"\n"+`partial`)
+	res := DetectFile(path)
+	if res["format"] != fmtCLF || !strings.HasPrefix(res["sample"].(string), "10.0.0.1 - -") || res["code"] != "" {
+		t.Errorf("got %+v", res)
+	}
+	for p, code := range map[string]string{
+		filepath.Join(dir, "nope.log"): "not_found", "relative.log": "invalid", filepath.Join(dir, "*.log"): "invalid", dir: "read",
+	} {
+		if res := DetectFile(p); res["code"] != code {
+			t.Errorf("%s: got %+v, want %s", p, res, code)
+		}
+	}
+	empty := filepath.Join(dir, "empty.log")
+	appendFile(t, empty, "")
+	if res := DetectFile(empty); res["code"] != "empty" {
+		t.Errorf("got %+v", res)
+	}
+}
+
+func TestFileSourceValidation(t *testing.T) {
+	f := NewFiles(t.TempDir(), t.TempDir(), time.Hour, func(*Entry) {})
+	bad := []fileSourceDef{
+		{Name: "", Path: "/logs/a.log"},
+		{Name: "a", Path: "relative.log"},
+		{Name: "a", Path: "/logs/*.log"},
+		{Name: "a", Path: "/logs/a.log", Format: "xml"},
+		{Name: "a", Path: "/logs/a.log", Format: fmtRegex, Regex: "(?P<x"},
+	}
+	for _, d := range bad {
+		if err := f.Configure(filesConfig{Sources: []fileSourceDef{d}}); err == nil {
+			t.Errorf("%+v accepted", d)
+		}
+	}
+	if err := f.Configure(filesConfig{Sources: []fileSourceDef{{Name: " traefik ", Path: "/logs/traefik/access.log"}}}); err != nil {
+		t.Fatal(err)
+	}
+	src := f.Status()["sources"].([]map[string]any)
+	if len(src) != 1 || src[0]["name"] != "traefik" || src[0]["id"] == "" || src[0]["format"] != fmtAuto {
+		t.Errorf("got %+v", src)
+	}
+}
+
+type fileSink struct {
+	mu sync.Mutex
+	e  []*Entry
+}
+
+func (s *fileSink) add(e *Entry) { s.mu.Lock(); s.e = append(s.e, e); s.mu.Unlock() }
+func (s *fileSink) take() []*Entry {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	e := s.e
+	s.e = nil
+	return e
+}
+
+func appendFile(t *testing.T, path, s string) {
+	t.Helper()
+	fh, err := os.OpenFile(path, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0o644)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := fh.WriteString(s); err != nil {
+		t.Fatal(err)
+	}
+	fh.Close()
+}
+
+func msgs(es []*Entry) []string {
+	var out []string
+	for _, e := range es {
+		out = append(out, e.Message)
+	}
+	return out
+}
+
+func TestFilesFollow(t *testing.T) {
+	dir, data := t.TempDir(), t.TempDir()
+	now := time.Now()
+	old := now.Add(-3 * time.Hour).UTC().Format(time.RFC3339)
+	recent := now.Add(-10 * time.Minute).UTC().Format(time.RFC3339)
+	app := filepath.Join(dir, "app.log")
+	appendFile(t, app, old+" INFO too old\n"+recent+" ERROR recent\n  at line 1\nundated history line\n")
+
+	sink := &fileSink{}
+	f := NewFiles(dir, data, time.Hour, sink.add)
+	if err := f.Configure(filesConfig{Sources: []fileSourceDef{{Name: "myapp", Path: app, Host: "web1", Enabled: true}}}); err != nil {
+		t.Fatal(err)
+	}
+	f.poll(now)
+	f.poll(now.Add(3 * time.Second)) // the pending entry waited for continuation lines
+	got := sink.take()
+	if len(got) != 1 || got[0].Message != "ERROR recent\n  at line 1" || got[0].SevNum != 3 || got[0].App != "myapp" ||
+		got[0].Host != "web1" || got[0].SourceType != "file" || got[0].Extra["log_file"] != app {
+		t.Fatalf("history: got %q %+v", msgs(got), got)
+	}
+	if st := f.Status()["sources"].([]map[string]any)[0]; st["detected"] != fmtText || st["open"] != true {
+		t.Errorf("status %+v", st)
+	}
+
+	appendFile(t, app, "plain new line\n\tcontinued\n")
+	f.poll(now.Add(4 * time.Second))
+	appendFile(t, app, "after\n")
+	f.poll(now.Add(5 * time.Second))
+	f.poll(now.Add(8 * time.Second))
+	if got = sink.take(); strings.Join(msgs(got), "|") != "plain new line\n\tcontinued|after" {
+		t.Fatalf("new lines: got %q", msgs(got))
+	}
+
+	appendFile(t, app, "before rotation\n")
+	if err := os.Rename(app, app+".1"); err != nil {
+		t.Fatal(err)
+	}
+	appendFile(t, app, "after rotation\n")
+	f.poll(now.Add(9 * time.Second))
+	f.poll(now.Add(12 * time.Second))
+	if got = sink.take(); strings.Join(msgs(got), "|") != "before rotation|after rotation" {
+		t.Fatalf("rotation: got %q", msgs(got))
+	}
+
+	// Restart: resumes where it stopped, nothing sent twice.
+	f.checkpointAll()
+	f.dirty = true
+	f.saveState()
+	appendFile(t, app, "while stopped\n")
+	f2 := NewFiles(dir, data, time.Hour, sink.add)
+	f2.poll(now.Add(13 * time.Second))
+	f2.poll(now.Add(16 * time.Second))
+	if got = sink.take(); strings.Join(msgs(got), "|") != "while stopped" {
+		t.Fatalf("restart: got %q", msgs(got))
+	}
+
+	// Truncated in place (copytruncate).
+	os.Truncate(app, 0)
+	appendFile(t, app, "x\n")
+	f2.poll(now.Add(17 * time.Second))
+	f2.poll(now.Add(20 * time.Second))
+	if got = sink.take(); strings.Join(msgs(got), "|") != "x" {
+		t.Fatalf("truncate: got %q", msgs(got))
+	}
+}
+
+func TestFilesAutoAndErrors(t *testing.T) {
+	dir, data := t.TempDir(), t.TempDir()
+	path := filepath.Join(dir, "access.json")
+	sink := &fileSink{}
+	f := NewFiles(dir, data, 0, sink.add) // FILES_BACKFILL=0: only new lines
+	cfg := filesConfig{Sources: []fileSourceDef{
+		{ID: "a1", Name: "api", Path: path, Enabled: true}, // auto
+		{ID: "b2", Name: "missing", Path: filepath.Join(dir, "nope.log"), Format: fmtText, Enabled: true},
+	}}
+	if err := f.Configure(cfg); err != nil {
+		t.Fatal(err)
+	}
+	now := time.Now()
+	appendFile(t, path, "")
+	f.poll(now) // empty file: format not known yet
+	appendFile(t, path, `{"msg":"one","level":"error"}`+"\n"+`{"msg":"two"}`+"\n"+`{"msg":"partial`)
+	f.poll(now.Add(time.Second))
+	got := sink.take()
+	if strings.Join(msgs(got), "|") != "one|two" || got[0].SevNum != 3 {
+		t.Fatalf("got %q", msgs(got))
+	}
+	src := f.Status()["sources"].([]map[string]any)
+	if src[0]["detected"] != fmtJSON || src[0]["open"] != true || src[1]["code"] != "not_found" {
+		t.Errorf("status %+v", src)
+	}
+
+	// Forced format: the JSON lines are read as text.
+	cfg.Sources[0].Format = fmtText
+	f.Configure(cfg)
+	appendFile(t, path, `"}`+"\n")
+	f.poll(now.Add(2 * time.Second))
+	f.poll(now.Add(5 * time.Second))
+	if got = sink.take(); strings.Join(msgs(got), "|") != `{"msg":"partial"}` {
+		t.Fatalf("forced: got %q", msgs(got))
+	}
+
+	// Turned off then on: starts over (only new lines here).
+	cfg.Sources[0].Enabled = false
+	f.Configure(cfg)
+	f.poll(now.Add(6 * time.Second))
+	appendFile(t, path, "while off\n")
+	cfg.Sources[0].Enabled = true
+	f.Configure(cfg)
+	f.poll(now.Add(7 * time.Second))
+	appendFile(t, path, "three\n")
+	f.poll(now.Add(8 * time.Second))
+	f.poll(now.Add(11 * time.Second))
+	if got = sink.take(); strings.Join(msgs(got), "|") != "three" {
+		t.Fatalf("re-enabled: got %q", msgs(got))
+	}
+}
+
+// A large access log: the last hour is found by date, not read from the
+// start, and every entry is counted from the first poll.
+func TestFilesBackfillLargeFile(t *testing.T) {
+	dir, data := t.TempDir(), t.TempDir()
+	path := filepath.Join(dir, "access.log")
+	now := time.Now()
+	line := func(at time.Time, n int) string {
+		return fmt.Sprintf(`86.246.223.62 - - [%s] "GET /wp-content/x.png HTTP/2.0" 200 640365 "-" "-" %d "vblog-io-router@file" "http://wordpress" 3ms`+"\n",
+			at.UTC().Format("02/Jan/2006:15:04:05 -0700"), n)
+	}
+	var b strings.Builder
+	const n = 200000 // one line every 3 s for a week: ~32 MB
+	for i := 0; i < n; i++ {
+		b.WriteString(line(now.Add(-time.Duration(n-i)*3*time.Second), i))
+	}
+	appendFile(t, path, b.String())
+	sink := &fileSink{}
+	f := NewFiles(dir, data, time.Hour, sink.add)
+	f.Configure(filesConfig{Sources: []fileSourceDef{{ID: "a1", Name: "traefik-log", Path: path, Enabled: true}}})
+	f.poll(now)
+	if pos := f.st.Pos["a1"]; pos.Off < int64(b.Len())*99/100 {
+		t.Errorf("history read from offset %d of %d", pos.Off, b.Len())
+	}
+	appendFile(t, path, line(now, n))
+	f.poll(now.Add(time.Second))
+	got := sink.take()
+	// The last hour (1200 lines, the oldest one on the edge) and the new line.
+	if len(got) < 1200 || len(got) > 1201 || got[0].App != "traefik-log" || got[len(got)-1].Extra["http_status"] != "200" {
+		t.Fatalf("got %d entries", len(got))
+	}
+	if st := f.Status()["sources"].([]map[string]any)[0]; st["read"] != uint64(len(got)) || st["behind"] != int64(0) || st["detected"] != fmtCLF {
+		t.Errorf("status %+v", st)
+	}
+	// Undated plain text: only new lines.
+	txt := filepath.Join(dir, "app.log")
+	appendFile(t, txt, strings.Repeat("no date here\n", 1000))
+	p := mustParser(t, fmtText, "")
+	if off := backfillStart(txt, p, 13000, now.Add(-time.Hour), now); off != 13000 {
+		t.Errorf("undated: %d", off)
+	}
+}
@@ -0,0 +1,281 @@
+package main
+
+import (
+	"context"
+	"crypto/sha256"
+	"encoding/base64"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// GET /api/v1/logs: incremental reading of the stored logs for automation
+// tools (n8n, scripts). Each answer gives the rows that follow a cursor,
+// oldest first, and the cursor to send next time; following the cursors
+// returns every row once, without gaps or duplicates.
+//
+// The cursor is a position on _time, which is the reception time given by
+// LogStream (see Entry.Record), so new rows always come after it. Rows only
+// count once they are older than the lag (30 s by default): a message can
+// wait a little in the queue or for its DNS name before VictoriaLogs makes it
+// visible. Several rows can share the same _time to the nanosecond; inside
+// such a group the rows are ordered by a hash of their content, and the
+// cursor remembers how many of them were already returned.
+
+const (
+	logsAPIDefaultLimit = 1000
+	logsAPIMaxLimit     = 10000
+	logsAPIDefaultLag   = 30 * time.Second
+	logsAPIMaxLag       = time.Hour
+	logsAPIDefaultSince = time.Hour
+	logsAPIMaxGroup     = 100000 // rows with the very same _time
+)
+
+// logsCursor: every row with _time < T has been returned, plus the first K
+// rows (in hash order) of those with _time == T. Q is a hash of the query:
+// K only means something for the same query.
+type logsCursor struct {
+	T time.Time `json:"t"`
+	K int       `json:"k,omitempty"`
+	Q string    `json:"q,omitempty"`
+}
+
+func (c logsCursor) encode() string {
+	b, _ := json.Marshal(c)
+	return base64.RawURLEncoding.EncodeToString(b)
+}
+
+func decodeCursor(s string) (logsCursor, bool) {
+	var c logsCursor
+	b, err := base64.RawURLEncoding.DecodeString(s)
+	if err != nil || json.Unmarshal(b, &c) != nil || c.T.IsZero() || c.K < 0 {
+		return logsCursor{}, false
+	}
+	return c, true
+}
+
+// parseSince reads the since parameter: a cursor from a previous answer, an
+// RFC 3339 time, or a duration back from now (90s, 15m, 6h, 7d). Empty: the
+// last hour.
+func parseSince(s string, now time.Time) (logsCursor, error) {
+	s = strings.TrimSpace(s)
+	if s == "" {
+		return logsCursor{T: now.Add(-logsAPIDefaultSince)}, nil
+	}
+	if t, err := time.Parse(time.RFC3339Nano, s); err == nil {
+		return logsCursor{T: t}, nil
+	}
+	if d, ok := parseAge(s); ok {
+		return logsCursor{T: now.Add(-d)}, nil
+	}
+	if c, ok := decodeCursor(s); ok {
+		return c, nil
+	}
+	return logsCursor{}, &codedError{code: "bad_since", msg: "since: expected a next_cursor, an RFC 3339 time or a duration such as 15m, 6h or 7d"}
+}
+
+// parseAge reads a Go duration, plus "Nd" for days.
+func parseAge(s string) (time.Duration, bool) {
+	if n, ok := strings.CutSuffix(s, "d"); ok {
+		days, err := strconv.Atoi(n)
+		if err != nil || days < 0 {
+			return 0, false
+		}
+		return time.Duration(days) * 24 * time.Hour, true
+	}
+	d, err := time.ParseDuration(s)
+	return d, err == nil && d >= 0
+}
+
+type logsPage struct {
+	Rows       []map[string]any `json:"rows"`
+	NextCursor string           `json:"next_cursor"`
+	HasMore    bool             `json:"has_more"`          // call again right away: more rows are ready
+	Waiting    bool             `json:"waiting,omitempty"` // the disk buffer is still being sent to VictoriaLogs
+	Until      string           `json:"until"`             // rows are returned up to this time (now - lag)
+}
+
+// GET /api/v1/logs?query=<LogsQL filter>&since=<cursor|time|duration>&limit=<n>&lag=<duration>
+func (a *API) logsV1(w http.ResponseWriter, r *http.Request) {
+	q := r.URL.Query()
+	filter := strings.TrimSpace(q.Get("query"))
+	if f, pipes := splitPipes(filter); strings.TrimSpace(pipes) != "" {
+		writeErr(w, http.StatusBadRequest, &codedError{code: "api_pipes", msg: "query: LogsQL pipes (| ...) are not supported, keep only the filter part"})
+		return
+	} else {
+		filter = strings.TrimSpace(f)
+	}
+	if filter == "" {
+		filter = "*"
+	}
+	limit := logsAPIDefaultLimit
+	if v := q.Get("limit"); v != "" {
+		n, err := strconv.Atoi(v)
+		if err != nil || n <= 0 || n > logsAPIMaxLimit {
+			writeErr(w, http.StatusBadRequest, &codedError{code: "bad_limit", msg: fmt.Sprintf("limit: expected 1 to %d", logsAPIMaxLimit)})
+			return
+		}
+		limit = n
+	}
+	lag := logsAPIDefaultLag
+	if v := q.Get("lag"); v != "" {
+		d, ok := parseAge(v)
+		if !ok || d > logsAPIMaxLag {
+			writeErr(w, http.StatusBadRequest, &codedError{code: "bad_lag", msg: "lag: expected a duration from 0s to 1h"})
+			return
+		}
+		lag = d
+	}
+	now := time.Now()
+	cur, err := parseSince(q.Get("since"), now)
+	if err != nil {
+		writeErr(w, http.StatusBadRequest, err)
+		return
+	}
+	qh := queryHash(filter)
+	if cur.Q != qh {
+		cur.K = 0 // the query changed: the rank inside the group no longer applies
+	}
+	cur.Q = qh
+
+	// Logs waiting in the disk buffer were received earlier: returning newer
+	// rows now would move the cursor past them.
+	if a.store.PendingSpool() > 0 {
+		writeJSON(w, http.StatusOK, logsPage{Rows: []map[string]any{}, NextCursor: cur.encode(), Waiting: true, Until: logsqlTime(cur.T)})
+		return
+	}
+	until := now.Add(-lag)
+	page, err := readLogsPage(r.Context(), a.store.Query, filter, cur, until, limit)
+	if err != nil {
+		writeErr(w, queryStatus(err), err)
+		return
+	}
+	a.annotateHosts(page.Rows)
+	writeJSON(w, http.StatusOK, page)
+}
+
+func queryHash(filter string) string {
+	sum := sha256.Sum256([]byte(filter))
+	return hex.EncodeToString(sum[:4])
+}
+
+type queryFunc func(ctx context.Context, query string) ([]map[string]any, error)
+
+// readLogsPage returns at most limit rows after cur, up to until included.
+func readLogsPage(ctx context.Context, run queryFunc, filter string, cur logsCursor, until time.Time, limit int) (logsPage, error) {
+	page := logsPage{Rows: []map[string]any{}, Until: logsqlTime(until)}
+	next := cur
+	start := cur.T
+	if cur.K > 0 {
+		// Rest of the group the previous page stopped in.
+		group, err := readGroup(ctx, run, filter, cur.T)
+		if err != nil {
+			return page, err
+		}
+		rest := group[min(cur.K, len(group)):]
+		if len(rest) >= limit {
+			page.Rows = rest[:limit]
+			next.K = cur.K + limit
+			page.HasMore = true
+			page.NextCursor = next.encode()
+			return page, nil
+		}
+		page.Rows = append(page.Rows, rest...)
+		start = cur.T.Add(time.Nanosecond)
+	}
+
+	left := limit - len(page.Rows)
+	var rows []map[string]any
+	if !start.After(until) {
+		q := fmt.Sprintf("_time:[%s, %s] (%s) | sort by (_time) | limit %d", logsqlTime(start), logsqlTime(until), filter, left+1)
+		var err error
+		if rows, err = run(ctx, q); err != nil {
+			return page, err
+		}
+	}
+	if len(rows) <= left {
+		// Everything up to until has been read.
+		page.Rows = append(page.Rows, rows...)
+		next = logsCursor{T: until.Add(time.Nanosecond), Q: cur.Q}
+		if next.T.Before(start) {
+			next.T = start
+		}
+		page.NextCursor = next.encode()
+		return page, nil
+	}
+
+	// One row too many: the group of the last time may be cut. Whole groups
+	// before it are returned; that last group starts the next page.
+	page.HasMore = true
+	last, err := rowTime(rows[left])
+	if err != nil {
+		return page, err
+	}
+	n := 0
+	for n < left {
+		t, err := rowTime(rows[n])
+		if err != nil {
+			return page, err
+		}
+		if !t.Before(last) {
+			break
+		}
+		n++
+	}
+	if n > 0 || len(page.Rows) > 0 {
+		page.Rows = append(page.Rows, rows[:n]...)
+		page.NextCursor = logsCursor{T: last, Q: cur.Q}.encode()
+		return page, nil
+	}
+	// The whole page is a single group: read it all to cut it in a stable order.
+	group, err := readGroup(ctx, run, filter, last)
+	if err != nil {
+		return page, err
+	}
+	page.Rows = group[:min(left, len(group))]
+	page.NextCursor = logsCursor{T: last, K: len(page.Rows), Q: cur.Q}.encode()
+	return page, nil
+}
+
+// readGroup returns the rows whose _time is exactly t, in a stable order.
+func readGroup(ctx context.Context, run queryFunc, filter string, t time.Time) ([]map[string]any, error) {
+	ts := logsqlTime(t)
+	rows, err := run(ctx, fmt.Sprintf("_time:[%s, %s] (%s) | limit %d", ts, ts, filter, logsAPIMaxGroup+1))
+	if err != nil {
+		return nil, err
+	}
+	if len(rows) > logsAPIMaxGroup {
+		return nil, fmt.Errorf("more than %d logs share the time %s", logsAPIMaxGroup, ts)
+	}
+	keys := make([]string, len(rows))
+	for i, row := range rows {
+		b, _ := json.Marshal(row) // map keys are sorted: same row, same bytes
+		sum := sha256.Sum256(b)
+		keys[i] = string(sum[:])
+	}
+	idx := make([]int, len(rows))
+	for i := range idx {
+		idx[i] = i
+	}
+	sort.SliceStable(idx, func(i, j int) bool { return keys[idx[i]] < keys[idx[j]] })
+	out := make([]map[string]any, len(rows))
+	for i, k := range idx {
+		out[i] = rows[k]
+	}
+	return out, nil
+}
+
+func rowTime(row map[string]any) (time.Time, error) {
+	s, _ := row["_time"].(string)
+	t, err := time.Parse(time.RFC3339Nano, s)
+	if err != nil {
+		return time.Time{}, errors.New("VictoriaLogs returned a row without a valid _time")
+	}
+	return t, nil
+}
@@ -0,0 +1,276 @@
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"math/rand"
+	"net/http"
+	"net/http/httptest"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+)
+
+// cursorVL plays VictoriaLogs for the two queries of /api/v1/logs: a time
+// range sorted by _time, and an exact time. Like VictoriaLogs, it gives no
+// order among rows of the same _time: they are shuffled on every query.
+type cursorVL struct {
+	mu      sync.Mutex
+	rows    []map[string]any
+	rnd     *rand.Rand
+	queries []string
+}
+
+var cursorQuery = regexp.MustCompile(`^_time:\[([^,]+), ([^\]]+)] \((.*?)\)( \| sort by \(_time\))? \| limit (\d+)$`)
+
+func (v *cursorVL) add(t time.Time, msg string) {
+	v.mu.Lock()
+	defer v.mu.Unlock()
+	v.rows = append(v.rows, map[string]any{"_time": t.UTC().Format(time.RFC3339Nano), "_msg": msg, "host": "h1"})
+}
+
+func (v *cursorVL) RoundTrip(r *http.Request) (*http.Response, error) {
+	_ = r.ParseForm()
+	q := r.PostForm.Get("query")
+	m := cursorQuery.FindStringSubmatch(q)
+	if m == nil {
+		return &http.Response{StatusCode: http.StatusBadRequest, Body: io.NopCloser(strings.NewReader("unexpected query " + q)), Header: http.Header{}}, nil
+	}
+	from, _ := time.Parse(time.RFC3339Nano, m[1])
+	to, _ := time.Parse(time.RFC3339Nano, m[2])
+	limit, _ := strconv.Atoi(m[5])
+
+	v.mu.Lock()
+	defer v.mu.Unlock()
+	v.queries = append(v.queries, q)
+	var out []map[string]any
+	for _, row := range v.rows {
+		t, _ := time.Parse(time.RFC3339Nano, row["_time"].(string))
+		if !t.Before(from) && !t.After(to) {
+			out = append(out, row)
+		}
+	}
+	v.rnd.Shuffle(len(out), func(i, j int) { out[i], out[j] = out[j], out[i] })
+	if m[4] != "" {
+		sort.SliceStable(out, func(i, j int) bool {
+			a, _ := time.Parse(time.RFC3339Nano, out[i]["_time"].(string))
+			b, _ := time.Parse(time.RFC3339Nano, out[j]["_time"].(string))
+			return a.Before(b)
+		})
+	}
+	if len(out) > limit {
+		out = out[:limit]
+	}
+	var b strings.Builder
+	for _, row := range out {
+		line, _ := json.Marshal(row)
+		b.Write(line)
+		b.WriteByte('\n')
+	}
+	return &http.Response{StatusCode: http.StatusOK, Body: io.NopCloser(strings.NewReader(b.String())), Header: http.Header{}}, nil
+}
+
+func newCursorVL(seed int64) (*cursorVL, *Store) {
+	vl := &cursorVL{rnd: rand.New(rand.NewSource(seed))}
+	store := NewStore("http://vl", 10, 10, time.Second, nil)
+	store.client.Transport = vl
+	store.streamClient.Transport = vl
+	return vl, store
+}
+
+// fill adds rows by groups of the same _time, some groups larger than a
+// page, some with identical rows, and returns the multiset of the rows.
+func fill(vl *cursorVL, start time.Time, groups []int, tag string) map[string]int {
+	want := map[string]int{}
+	t := start
+	for g, size := range groups {
+		for i := 0; i < size; i++ {
+			msg := fmt.Sprintf("%s g%d r%d", tag, g, i%4) // r0..r3 repeat: identical rows
+			vl.add(t, msg)
+			want[rowKey(t, msg)]++
+		}
+		t = t.Add(time.Duration(1+g%3) * time.Microsecond)
+	}
+	return want
+}
+
+func rowKey(t time.Time, msg string) string { return t.UTC().Format(time.RFC3339Nano) + " " + msg }
+
+func TestLogsCursorNoLossNoDuplicate(t *testing.T) {
+	base := time.Date(2026, 11, 1, 10, 0, 0, 0, time.UTC)
+	groups := []int{1, 3, 1, 1, 7, 2, 1, 12, 1, 4, 4, 1, 25, 1, 2}
+	for _, limit := range []int{1, 2, 3, 5, 8, 1000} {
+		for seed := int64(1); seed <= 5; seed++ {
+			vl, store := newCursorVL(seed)
+			want := fill(vl, base, groups, "a")
+			got := map[string]int{}
+			cur := logsCursor{T: base.Add(-time.Minute)}
+			until := base.Add(time.Second)
+			var last time.Time
+			for calls := 0; ; calls++ {
+				if calls > 500 {
+					t.Fatalf("limit %d: no end", limit)
+				}
+				page, err := readLogsPage(context.Background(), store.Query, "*", cur, until, limit)
+				if err != nil {
+					t.Fatal(err)
+				}
+				if len(page.Rows) > limit {
+					t.Fatalf("limit %d: page of %d rows", limit, len(page.Rows))
+				}
+				for _, row := range page.Rows {
+					rt, _ := rowTime(row)
+					if rt.Before(last) {
+						t.Fatalf("limit %d: rows out of order (%s after %s)", limit, rt, last)
+					}
+					last = rt
+					got[rowKey(rt, row["_msg"].(string))]++
+				}
+				var ok bool
+				if cur, ok = decodeCursor(page.NextCursor); !ok {
+					t.Fatalf("bad cursor %q", page.NextCursor)
+				}
+				if !page.HasMore {
+					break
+				}
+				if len(page.Rows) == 0 {
+					t.Fatalf("limit %d: has_more with an empty page", limit)
+				}
+			}
+			if fmt.Sprint(got) != fmt.Sprint(want) {
+				t.Fatalf("limit %d seed %d:\n got %v\nwant %v", limit, seed, got, want)
+			}
+		}
+	}
+}
+
+// New logs arrive between the calls, as with a scheduled n8n workflow.
+func TestLogsCursorFollowsNewLogs(t *testing.T) {
+	vl, store := newCursorVL(7)
+	base := time.Date(2026, 11, 1, 10, 0, 0, 0, time.UTC)
+	want := map[string]int{}
+	got := map[string]int{}
+	cur := logsCursor{T: base}
+	for round := 0; round < 6; round++ {
+		start := base.Add(time.Duration(round) * time.Second)
+		for k, n := range fill(vl, start, []int{2, 5, 1, 3}, fmt.Sprintf("round%d", round)) {
+			want[k] += n
+		}
+		until := start.Add(500 * time.Millisecond) // after this round's rows
+		for {
+			page, err := readLogsPage(context.Background(), store.Query, "*", cur, until, 4)
+			if err != nil {
+				t.Fatal(err)
+			}
+			for _, row := range page.Rows {
+				rt, _ := rowTime(row)
+				got[rowKey(rt, row["_msg"].(string))]++
+			}
+			cur, _ = decodeCursor(page.NextCursor)
+			if !page.HasMore {
+				break
+			}
+		}
+		// Polling again with nothing new returns nothing.
+		page, err := readLogsPage(context.Background(), store.Query, "*", cur, until, 4)
+		if err != nil || len(page.Rows) != 0 || page.HasMore {
+			t.Fatalf("round %d: second poll returned %d rows (has_more %v, err %v)", round, len(page.Rows), page.HasMore, err)
+		}
+	}
+	if fmt.Sprint(got) != fmt.Sprint(want) {
+		t.Fatalf("got %v\nwant %v", got, want)
+	}
+}
+
+func TestParseSince(t *testing.T) {
+	now := time.Date(2026, 11, 1, 12, 0, 0, 0, time.UTC)
+	c := logsCursor{T: now.Add(-time.Minute), K: 3, Q: "abcd"}
+	for _, tc := range []struct {
+		in   string
+		want logsCursor
+	}{
+		{"", logsCursor{T: now.Add(-time.Hour)}},
+		{"15m", logsCursor{T: now.Add(-15 * time.Minute)}},
+		{"7d", logsCursor{T: now.Add(-7 * 24 * time.Hour)}},
+		{"2026-11-01T08:30:00.5Z", logsCursor{T: time.Date(2026, 11, 1, 8, 30, 0, 5e8, time.UTC)}},
+		{c.encode(), c},
+	} {
+		got, err := parseSince(tc.in, now)
+		if err != nil || !got.T.Equal(tc.want.T) || got.K != tc.want.K || got.Q != tc.want.Q {
+			t.Errorf("parseSince(%q) = %+v, %v; want %+v", tc.in, got, err, tc.want)
+		}
+	}
+	for _, bad := range []string{"yesterday", "-5m", "e30"} {
+		if _, err := parseSince(bad, now); err == nil {
+			t.Errorf("parseSince(%q): expected an error", bad)
+		}
+	}
+}
+
+func TestLogsV1Handler(t *testing.T) {
+	vl, store := newCursorVL(3)
+	a := &API{store: store, rdns: NewReverseDNS(false, "")}
+	old := time.Now().Add(-10 * time.Minute)
+	fill(vl, old, []int{2, 1}, "x")
+	vl.add(time.Now().Add(time.Hour), "in the future: after until")
+
+	get := func(url string) (int, logsPage, map[string]string) {
+		rec := httptest.NewRecorder()
+		a.logsV1(rec, httptest.NewRequest("GET", url, nil))
+		var page logsPage
+		var e map[string]string
+		_ = json.Unmarshal(rec.Body.Bytes(), &page)
+		_ = json.Unmarshal(rec.Body.Bytes(), &e)
+		return rec.Code, page, e
+	}
+	code, page, _ := get("/api/v1/logs?query=host:h1&since=1h")
+	if code != http.StatusOK || len(page.Rows) != 3 || page.HasMore || page.NextCursor == "" {
+		t.Fatalf("status %d, %d rows, has_more %v", code, len(page.Rows), page.HasMore)
+	}
+	if q := vl.queries[len(vl.queries)-1]; !strings.Contains(q, "(host:h1)") {
+		t.Fatalf("query filter not applied: %s", q)
+	}
+	code, page, _ = get("/api/v1/logs?query=host:h1&since=" + page.NextCursor)
+	if code != http.StatusOK || len(page.Rows) != 0 {
+		t.Fatalf("second call: status %d, %d rows", code, len(page.Rows))
+	}
+	for url, wantCode := range map[string]string{
+		"/api/v1/logs?query=" + "*%20|%20stats%20count()": "api_pipes",
+		"/api/v1/logs?limit=0":                            "bad_limit",
+		"/api/v1/logs?limit=20000":                        "bad_limit",
+		"/api/v1/logs?lag=2h":                             "bad_lag",
+		"/api/v1/logs?since=nope":                         "bad_since",
+	} {
+		if code, _, e := get(url); code != http.StatusBadRequest || e["code"] != wantCode {
+			t.Errorf("%s: status %d, %v; want 400 %s", url, code, e, wantCode)
+		}
+	}
+}
+
+func TestLogsV1WaitsForSpool(t *testing.T) {
+	spool, err := OpenSpool(t.TempDir(), 1<<20)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := spool.Write([]byte(`{"_msg":"x"}`+"\n"), 1); err != nil {
+		t.Fatal(err)
+	}
+	vl, _ := newCursorVL(1)
+	store := NewStore("http://vl", 10, 10, time.Second, spool)
+	store.streamClient.Transport = vl
+	a := &API{store: store}
+	rec := httptest.NewRecorder()
+	a.logsV1(rec, httptest.NewRequest("GET", "/api/v1/logs?since=2026-11-01T10:00:00Z", nil))
+	var page logsPage
+	_ = json.Unmarshal(rec.Body.Bytes(), &page)
+	c, _ := decodeCursor(page.NextCursor)
+	if rec.Code != http.StatusOK || !page.Waiting || len(page.Rows) != 0 || !c.T.Equal(time.Date(2026, 11, 1, 10, 0, 0, 0, time.UTC)) || len(vl.queries) != 0 {
+		t.Fatalf("status %d, waiting %v, %d rows, cursor %v, %d queries", rec.Code, page.Waiting, len(page.Rows), c.T, len(vl.queries))
+	}
+}
@@ -43,6 +43,7 @@ type config struct {
 	auditLog   string
 	auditHost  string
 	auditFill  time.Duration
+	filesFill  time.Duration
 	batchSize  int
 	queueSize  int
 	flushEvery time.Duration
@@ -125,6 +126,7 @@ func main() {
 		auditLog:   getenv("AUDIT_LOG", "/var/log/audit/audit.log"),
 		auditHost:  os.Getenv("AUDIT_HOST"),
 		auditFill:  getenvDuration("AUDIT_BACKFILL", time.Hour),
+		filesFill:  getenvDuration("FILES_BACKFILL", time.Hour),
 		batchSize:  getenvInt("BATCH_SIZE", 1000),
 		queueSize:  getenvInt("QUEUE_SIZE", 100000),
 		flushEvery: time.Duration(getenvInt("FLUSH_MS", 1000)) * time.Millisecond,
@@ -140,6 +142,10 @@ func main() {
 	if err != nil {
 		log.Fatalf("tags: %v", err)
 	}
+	tokens, err := LoadTokenStore(filepath.Join(cfg.dataDir, "api_tokens.json"))
+	if err != nil {
+		log.Fatalf("api tokens: %v", err)
+	}

 	var spool *Spool
 	if cfg.spoolMax > 0 {
@@ -198,7 +204,7 @@ func main() {
 	}
 	mux := http.NewServeMux()
 	presets := getenv("PRESETS_FILE", filepath.Join(cfg.dataDir, "presets.json"))
-	api := &API{store: store, hub: hub, tags: tags, presets: presets, rdns: rdns, allowPurge: cfg.allowPurge, exportMax: cfg.exportMax, syslog: syslogSrv}
+	api := &API{store: store, hub: hub, tags: tags, presets: presets, rdns: rdns, allowPurge: cfg.allowPurge, exportMax: cfg.exportMax, syslog: syslogSrv, tokens: tokens}
 	if cfg.dockerLogs {
 		dm, err := NewDockerManager(cfg.dockerHost, cfg.dataDir, cfg.backfill, sink)
 		if err != nil {
@@ -218,11 +224,16 @@ func main() {
 	// Linux audit log of the host (auditd), off until enabled in Settings > Sources.
 	api.audit = NewAudit(cfg.auditLog, cfg.hostRoot, cfg.auditHost, cfg.dataDir, cfg.auditFill, sink)
 	go api.audit.Run(ctx)
+	// Log files of other programs (Traefik, nginx…) mounted in the container,
+	// declared in Settings > Sources.
+	api.files = NewFiles(cfg.hostRoot, cfg.dataDir, cfg.filesFill, sink)
+	go api.files.Run(ctx)
 	api.selfLog = selfLog
 	api.Routes(mux)
-	mux.Handle("GET /", http.FileServer(http.FS(static)))
+	mux.Handle("GET /", staticFiles(static))

-	handler, err := newAuth(cfg.auth, readOnly(mux))
+	app := readOnly(mux)
+	handler, err := newAuth(cfg.auth, app)
 	if err != nil {
 		log.Fatalf("auth: %v", err)
 	}
@@ -235,7 +246,8 @@ func main() {
 	if !authOn {
 		log.Printf("warning: no authentication (AUTH_USER is empty): anyone who can reach %s can read the logs and change the settings", cfg.httpAddr)
 	}
-	handler = secure(handler, contentSecurityPolicy(static), authOn)
+	// API tokens (Settings > API) are checked before the login, in every auth mode.
+	handler = secure(tokenAuth(tokens, handler, app), contentSecurityPolicy(static), authOn)
 	srv := &http.Server{
 		Addr:              cfg.httpAddr,
 		Handler:           handler,
@@ -119,10 +119,10 @@ func (f Filter) filterExpr() string {
 		parts = append(parts, "app:="+strconv.Quote(f.App))
 	}
 	switch f.Source {
-	case "docker", "host", "kernel", "audit", "logstream":
+	case "docker", "host", "kernel", "audit", "logstream", "file":
 		parts = append(parts, `source_type:=`+strconv.Quote(f.Source))
 	case "syslog": // also matches logs stored before source_type existed
-		parts = append(parts, `!(source_type:in("docker","host","kernel","audit","logstream"))`)
+		parts = append(parts, `!(source_type:in("docker","host","kernel","audit","logstream","file"))`)
 	}
 	if f.Severity >= 0 && f.Severity < 7 {
 		names := make([]string, 0, 8)
@@ -0,0 +1,44 @@
+package main
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"io/fs"
+	"net/http"
+	"strings"
+)
+
+// staticFiles serves the embedded UI with an ETag per file (a hash of its
+// content, computed at startup). Pages, scripts and styles are revalidated on
+// every load ("no-cache"): an unchanged file costs a 304 without body, and the
+// files of a new version are always taken after an update. Fonts are kept for
+// 30 days.
+func staticFiles(static fs.FS) http.Handler {
+	etags := map[string]string{}
+	_ = fs.WalkDir(static, ".", func(path string, d fs.DirEntry, err error) error {
+		if err != nil || d.IsDir() {
+			return err
+		}
+		b, err := fs.ReadFile(static, path)
+		if err != nil {
+			return err
+		}
+		sum := sha256.Sum256(b)
+		etags["/"+path] = `"` + hex.EncodeToString(sum[:8]) + `"`
+		return nil
+	})
+	etags["/"] = etags["/index.html"]
+	files := http.FileServer(http.FS(static))
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if tag, ok := etags[r.URL.Path]; ok {
+			// http.FileServer answers If-None-Match with 304 from this header.
+			w.Header().Set("ETag", tag)
+			if strings.HasPrefix(r.URL.Path, "/fonts/") {
+				w.Header().Set("Cache-Control", "public, max-age=2592000")
+			} else {
+				w.Header().Set("Cache-Control", "no-cache")
+			}
+		}
+		files.ServeHTTP(w, r)
+	})
+}
@@ -0,0 +1,42 @@
+package main
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"testing/fstest"
+)
+
+func TestStaticFilesCache(t *testing.T) {
+	h := staticFiles(fstest.MapFS{
+		"index.html":       {Data: []byte("<p>v1</p>")},
+		"app.js":           {Data: []byte("v1")},
+		"fonts/mono.woff2": {Data: []byte("font")},
+	})
+	get := func(path, etag string) *httptest.ResponseRecorder {
+		req := httptest.NewRequest("GET", path, nil)
+		if etag != "" {
+			req.Header.Set("If-None-Match", etag)
+		}
+		rec := httptest.NewRecorder()
+		h.ServeHTTP(rec, req)
+		return rec
+	}
+	rec := get("/app.js", "")
+	tag := rec.Header().Get("ETag")
+	if rec.Code != http.StatusOK || tag == "" || rec.Header().Get("Cache-Control") != "no-cache" {
+		t.Fatalf("app.js: %d, ETag %q, Cache-Control %q", rec.Code, tag, rec.Header().Get("Cache-Control"))
+	}
+	if rec := get("/app.js", tag); rec.Code != http.StatusNotModified || rec.Body.Len() != 0 {
+		t.Fatalf("revalidation: %d with %d bytes, want 304 without body", rec.Code, rec.Body.Len())
+	}
+	if rec := get("/app.js", `"old"`); rec.Code != http.StatusOK || rec.Body.String() != "v1" {
+		t.Fatalf("stale ETag: %d %q", rec.Code, rec.Body)
+	}
+	if rec := get("/", ""); rec.Code != http.StatusOK || rec.Header().Get("ETag") == "" || rec.Header().Get("Cache-Control") != "no-cache" {
+		t.Fatalf("index: %d %v", rec.Code, rec.Header())
+	}
+	if rec := get("/fonts/mono.woff2", ""); rec.Header().Get("Cache-Control") != "public, max-age=2592000" {
+		t.Fatalf("font Cache-Control %q", rec.Header().Get("Cache-Control"))
+	}
+}
@@ -423,6 +423,15 @@ func queryStatus(err error) int {
 	return http.StatusBadGateway
 }

+// PendingSpool is the number of logs waiting in the disk spool.
+func (s *Store) PendingSpool() int64 {
+	if s.spool == nil {
+		return 0
+	}
+	lines, _ := s.spool.Pending()
+	return lines
+}
+
 func (s *Store) Stats() map[string]any {
 	st := map[string]any{
 		"received":  s.received.Load(),
@@ -36,7 +36,7 @@ type Entry struct {
 	Proto    string // udp or tcp
 	HostIP   string // original host value when it was an IP resolved through DNS

-	SourceType string            // "syslog", "docker", "host", "kernel", "audit" or "logstream"
+	SourceType string            // "syslog", "docker", "host", "kernel", "audit", "file" or "logstream"
 	Extra      map[string]string // additional fields (docker: container, image, …)

 	// Not stored. Wait: the producer can be slowed down when the queue is full
@@ -217,6 +217,51 @@ func (s *TagStore) Delete(id string) error {
 	return errTagNotFound
 }

+// tagListError tells which tag of a list (PUT /api/tags) is invalid.
+type tagListError struct {
+	index int
+	err   error
+}
+
+func (e *tagListError) Error() string { return e.err.Error() }
+func (e *tagListError) Unwrap() error { return e.err }
+
+// Replace saves a whole list at once (the Save button of the settings). A tag
+// whose id is known keeps its code; the others get a new id and a free code.
+// Nothing is saved when a tag is invalid: the error gives its position.
+func (s *TagStore) Replace(in []Tag) ([]Tag, error) {
+	if len(in) > 99 {
+		return nil, errTooManyTags
+	}
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	codes := map[string]string{}
+	for _, t := range s.tags {
+		codes[t.ID] = t.Code
+	}
+	out := make([]Tag, len(in))
+	seen := map[string]bool{}
+	for i, t := range in {
+		if err := t.validate(); err != nil {
+			return nil, &tagListError{index: i, err: err}
+		}
+		if c, ok := codes[t.ID]; ok && !seen[t.ID] {
+			t.Code = c
+		} else {
+			t.ID, t.Code = newID(), ""
+		}
+		seen[t.ID] = true
+		out[i] = t
+	}
+	for i := range out {
+		if out[i].Code == "" {
+			out[i].Code = freeCode(out)
+		}
+	}
+	s.tags = out
+	return append([]Tag(nil), out...), s.save()
+}
+
 func (s *TagStore) Reset() ([]Tag, error) {
 	s.mu.Lock()
 	defer s.mu.Unlock()
@@ -1,6 +1,7 @@
 package main

 import (
+	"errors"
 	"os"
 	"path/filepath"
 	"slices"
@@ -52,3 +53,37 @@ func TestTagCodes(t *testing.T) {
 		t.Fatalf("reloaded code = %q, want 07", got)
 	}
 }
+
+func TestTagReplace(t *testing.T) {
+	s, err := LoadTagStore(filepath.Join(t.TempDir(), "tags.json"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	// Defaults: warning 01, error 02. Keep error, drop warning, add two tags
+	// (one with an unknown id, one repeating a known id).
+	got, err := s.Replace([]Tag{
+		{ID: "new1", Pattern: "a", Color: "#000000"},
+		{ID: "error", Code: "42", Pattern: "error", Color: "#111111", Enabled: true},
+		{ID: "error", Pattern: "b", Color: "#000000"},
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	codes := []string{got[0].Code, got[1].Code, got[2].Code}
+	if want := []string{"01", "02", "03"}; !slices.Equal(codes, want) {
+		t.Fatalf("codes = %v, want %v", codes, want)
+	}
+	if got[1].ID != "error" || got[0].ID == "new1" || got[2].ID == "error" || got[1].Color != "#111111" {
+		t.Fatalf("ids/fields = %+v", got)
+	}
+
+	// An invalid tag saves nothing and gives its position.
+	_, err = s.Replace([]Tag{{Pattern: "ok", Color: "#000000"}, {Pattern: "(", Regex: true, Color: "#000000"}})
+	var le *tagListError
+	if !errors.As(err, &le) || le.index != 1 {
+		t.Fatalf("err = %v, want tagListError at 1", err)
+	}
+	if n := len(s.List()); n != 3 {
+		t.Fatalf("list after a failed Replace has %d tags, want 3", n)
+	}
+}
@@ -24,7 +24,7 @@
    </div>

    <div class="search">
-      <svg class="ico" viewBox="0 0 24 24" aria-hidden="true"><circle cx="11" cy="11" r="7"/><path d="m20 20-3.5-3.5"/></svg>
+      <svg class="pi ico" viewBox="0 0 24 24" aria-hidden="true"><path fill-rule="evenodd" clip-rule="evenodd" d="M10 3C13.866 3 17 6.13401 17 10C17 11.591 16.4674 13.0568 15.5732 14.2324L19.6514 17.7803C20.9315 18.8943 20.1433 21 18.4463 21C17.8908 20.9999 17.3649 20.7481 17.0166 20.3154L13.5625 16.0244C12.5186 16.643 11.3013 17 10 17C6.13401 17 3 13.866 3 10C3 6.13401 6.13401 3 10 3ZM10 6C7.79086 6 6 7.79086 6 10C6 12.2091 7.79086 14 10 14C12.2091 14 14 12.2091 14 10C14 7.79086 12.2091 6 10 6Z"/></svg>
      <input id="q" type="search" autocomplete="off" spellcheck="false" data-i18n-aria="searchAria">
      <button id="mode" class="chip" type="button" data-i18n-title="modeTitle">Simple</button>
    </div>
@@ -34,17 +34,17 @@
        <span class="dot"></span><span class="lbl" data-i18n="live">Live</span>
      </button>
      <button id="settingsBtn" class="icon-btn" type="button" data-i18n-title="settings" data-i18n-aria="settings">
-        <!-- Gear icon (Lucide "settings", ISC license) -->
-        <svg viewBox="0 0 24 24"><path d="M12.22 2h-.44a2 2 0 0 0-2 2v.18a2 2 0 0 1-1 1.73l-.43.25a2 2 0 0 1-2 0l-.15-.08a2 2 0 0 0-2.73.73l-.22.38a2 2 0 0 0 .73 2.73l.15.1a2 2 0 0 1 1 1.72v.51a2 2 0 0 1-1 1.74l-.15.09a2 2 0 0 0-.73 2.73l.22.38a2 2 0 0 0 2.73.73l.15-.08a2 2 0 0 1 2 0l.43.25a2 2 0 0 1 1 1.73V20a2 2 0 0 0 2 2h.44a2 2 0 0 0 2-2v-.18a2 2 0 0 1 1-1.73l.43-.25a2 2 0 0 1 2 0l.15.08a2 2 0 0 0 2.73-.73l.22-.39a2 2 0 0 0-.73-2.73l-.15-.08a2 2 0 0 1-1-1.74v-.5a2 2 0 0 1 1-1.74l.15-.09a2 2 0 0 0 .73-2.73l-.22-.38a2 2 0 0 0-2.73-.73l-.15.08a2 2 0 0 1-2 0l-.43-.25a2 2 0 0 1-1-1.73V4a2 2 0 0 0-2-2z"/><circle cx="12" cy="12" r="3"/></svg>
+        <!-- Papicons "gears" (MIT license, see THIRD_PARTY_NOTICES.md) -->
+        <svg class="pi" viewBox="0 0 24 24"><path fill-rule="evenodd" clip-rule="evenodd" d="M11.9995 3C12.5927 3.00002 13.3086 3.20228 13.8921 3.41211C14.5527 3.64979 14.8812 4.36002 14.7143 5.04199L14.5307 5.78809C14.4327 6.18858 14.6447 6.59689 15.0014 6.80371C15.3585 7.01063 15.8146 6.98753 16.1128 6.70215L16.6684 6.1709C17.1756 5.68518 17.9554 5.61392 18.4917 6.06738C18.9651 6.46772 19.4979 6.98637 19.7944 7.5C20.091 8.01372 20.2733 8.7346 20.3833 9.34473C20.5078 10.0358 20.0565 10.6757 19.3823 10.8721L18.643 11.0869C18.2471 11.2022 18.0005 11.5876 18.0005 12C18.0005 12.4123 18.2463 12.7975 18.6421 12.9131L19.3833 13.1289C20.0571 13.3255 20.5077 13.9644 20.3833 14.6553C20.2733 15.2654 20.0909 15.9863 19.7944 16.5C19.4979 17.0136 18.965 17.5323 18.4917 17.9326C17.9555 18.386 17.1756 18.3156 16.6684 17.8301L16.1128 17.2979C15.8148 17.0124 15.3587 16.9888 15.0014 17.1953C14.6445 17.4017 14.4325 17.8105 14.5307 18.2109L14.7143 18.958C14.8813 19.6401 14.5528 20.3512 13.8921 20.5889C13.3087 20.7987 12.5926 21 11.9995 21C11.4065 20.9999 10.6911 20.7986 10.1079 20.5889C9.4471 20.3512 9.11864 19.6401 9.28562 18.958L9.46824 18.21C9.56604 17.8097 9.3543 17.4015 8.99754 17.1953C8.64021 16.989 8.18412 17.0124 7.88621 17.2979L7.33152 17.8301C6.82436 18.3157 6.04449 18.3859 5.50828 17.9326C5.03495 17.5323 4.50211 17.0136 4.20555 16.5C3.90903 15.9863 3.7257 15.2654 3.6157 14.6553C3.49135 13.9644 3.94281 13.3254 4.61668 13.1289L5.35594 12.9131C5.7518 12.7976 6.00041 12.4124 6.00047 12C6.00048 11.5876 5.75186 11.2022 5.35594 11.0869L4.61668 10.8721C3.94264 10.6756 3.49219 10.0357 3.61668 9.34473C3.72668 8.73456 3.90897 8.01373 4.20555 7.5C4.50212 6.98632 5.03487 6.46774 5.50828 6.06738C6.04452 5.61392 6.82432 5.68518 7.33152 6.1709L7.88621 6.70215C8.18437 6.98742 8.64039 7.01053 8.99754 6.80371C9.35438 6.59702 9.56625 6.18865 9.46824 5.78809L9.28562 5.04199C9.1187 4.35995 9.44713 3.64975 10.1079 3.41211C10.6912 3.20234 11.4064 3.00008 11.9995 3ZM12.0005 9C10.3436 9 9.00047 10.3431 9.00047 12C9.00047 13.6569 10.3436 15 12.0005 15C13.6571 14.9997 15.0005 13.6567 15.0005 12C15.0005 10.3433 13.6571 9.00026 12.0005 9Z"/></svg>
      </button>
      <button id="themeBtn" class="icon-btn" type="button" data-i18n-title="theme" data-i18n-aria="theme">
-        <svg class="sun" viewBox="0 0 24 24"><circle cx="12" cy="12" r="4"/><path d="M12 2v2M12 20v2M4.9 4.9l1.4 1.4M17.7 17.7l1.4 1.4M2 12h2M20 12h2M4.9 19.1l1.4-1.4M17.7 6.3l1.4-1.4"/></svg>
-        <svg class="moon" viewBox="0 0 24 24"><path d="M21 12.8A9 9 0 1 1 11.2 3a7 7 0 0 0 9.8 9.8z"/></svg>
+        <svg class="pi sun" viewBox="0 0 24 24"><path d="M15 12.8572C15 14.514 13.6569 15.8572 12 15.8572C10.3431 15.8572 9 14.514 9 12.8572C9 11.2003 10.3431 9.85718 12 9.85718C13.6569 9.85718 15 11.2003 15 12.8572Z"/><path d="M11.9994 9.85732C13.6563 9.85732 14.9994 11.2005 14.9994 12.8573C14.9993 14.514 13.6562 15.8573 11.9994 15.8573C10.3429 15.8571 8.99959 14.5139 8.99943 12.8573C8.99943 11.2006 10.3428 9.85754 11.9994 9.85732Z"/><path fill-rule="evenodd" clip-rule="evenodd" d="M12.224 2.71279C13.1976 2.82269 13.8745 3.93342 15.2279 6.1542C17.808 5.82774 19.0985 5.66373 19.7914 6.35635C19.8975 6.46241 19.9909 6.58086 20.0707 6.70791C20.5916 7.53758 20.1456 8.75872 19.2533 11.2011C21.1171 13.0146 22.0492 13.9219 21.9399 14.8954C21.9231 15.0444 21.8898 15.1914 21.8403 15.3329C21.5165 16.2576 20.283 16.6707 17.8168 17.496C17.561 20.084 17.4324 21.3779 16.6029 21.8993C16.4762 21.979 16.3409 22.0442 16.1996 22.0937C15.2748 22.4171 14.1824 21.7104 11.9994 20.2968C9.81658 21.7103 8.72506 22.4171 7.80021 22.0937C7.65874 22.0441 7.52282 21.9791 7.39592 21.8993C6.56669 21.3778 6.43883 20.0837 6.18303 17.496C3.71676 16.6707 2.48338 16.2576 2.15959 15.3329C2.11005 15.1914 2.07674 15.0444 2.05998 14.8954C1.95064 13.9218 2.88271 13.0146 4.7465 11.2011C3.8542 8.75861 3.40816 7.53759 3.92912 6.70791C4.00891 6.58086 4.10231 6.46241 4.20842 6.35635C4.9014 5.66383 6.19193 5.82775 8.77189 6.1542C10.1253 3.93342 10.8022 2.82269 11.7758 2.71279C11.9247 2.696 12.0751 2.69599 12.224 2.71279ZM11.9994 7.85732C9.23819 7.85754 6.99943 10.096 6.99943 12.8573C6.99959 15.6185 9.23829 17.8571 11.9994 17.8573C14.7608 17.8573 16.9993 15.6186 16.9994 12.8573C16.9994 10.0959 14.7609 7.85732 11.9994 7.85732Z"/></svg>
+        <svg class="pi moon" viewBox="0 0 24 24"><path d="M11 3.85718C11.7891 3.85718 12.0004 5.04248 11.4641 5.62132C10.5555 6.60206 10 7.91462 10 9.35718C10 12.3947 12.4624 14.8572 15.5 14.8572C16.9423 14.8572 18.2542 14.3018 19.2346 13.3934C19.8136 12.8568 20.9996 13.0677 21 13.8572C21.0027 18.8277 16.9706 21.8572 12 21.8572C7.02944 21.8572 3 17.8277 3 12.8572C3 7.88661 6.02944 3.85718 11 3.85718Z"/></svg>
      </button>
      <span id="whoami" class="whoami" hidden><span class="who-name"></span><span class="who-badge"></span></span>
      <a id="logoutBtn" class="icon-btn" href="/auth/logout" hidden data-i18n-title="logout" data-i18n-aria="logout">
-        <!-- Log out icon (Lucide "log-out", ISC license) -->
-        <svg viewBox="0 0 24 24"><path d="M9 21H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h4"/><path d="m16 17 5-5-5-5"/><path d="M21 12H9"/></svg>
+        <!-- Papicons "logout" (MIT license) -->
+        <svg class="pi" viewBox="0 0 24 24"><path d="M7.5 3C8.77204 3 9.7815 3.14324 10.5449 3.32129C11.7792 3.60916 12.5491 4.68832 12.6953 5.94727C12.7404 6.33543 12.7854 6.78351 12.8262 7.29297C12.891 8.10446 12.1921 8.76206 11.3828 8.67383C11.2557 8.65998 11.128 8.64666 11.001 8.63281C10.1171 8.53511 9.26865 8.80021 8.64355 9.42676C8.0185 10.0502 7.66803 10.9842 7.66797 11.9658C7.66803 12.9475 8.0185 13.8815 8.64355 14.5049C9.26864 15.1314 10.1171 15.3965 11.001 15.2988C11.128 15.285 11.2557 15.2717 11.3828 15.2578C12.1939 15.1694 12.8945 15.8263 12.8311 16.6396C12.789 17.177 12.7423 17.6476 12.6953 18.0527C12.5491 19.3117 11.7792 20.3908 10.5449 20.6787C9.7815 20.8568 8.77204 21 7.5 21C6.22796 21 5.2185 20.8568 4.45508 20.6787C3.22079 20.3908 2.45087 19.3117 2.30469 18.0527C2.15229 16.7401 2 14.7432 2 12C2 9.25683 2.15229 7.25991 2.30469 5.94727C2.45087 4.68832 3.22079 3.60916 4.45508 3.32129C5.2185 3.14324 6.22795 3 7.5 3ZM15.8955 7.38379C16.286 6.99352 16.9191 6.99349 17.3096 7.38379L21.083 11.1572C21.473 11.5477 21.4732 12.1809 21.083 12.5713L17.3096 16.3438C16.919 16.734 16.2859 16.7342 15.8955 16.3438C15.5052 15.9533 15.5053 15.3202 15.8955 14.9297L17.8242 13.001C15.677 13.0946 13.5289 13.1886 11.3818 13.2822C11.2547 13.2878 11.1272 13.2933 11 13.2988C10.6465 13.3144 10.3066 13.1877 10.0566 12.9375C9.80697 12.6878 9.66705 12.3347 9.66699 11.9658C9.66704 11.5968 9.80779 11.2439 10.0576 10.9941C10.3076 10.7441 10.6466 10.6173 11 10.6328C11.1272 10.6384 11.2547 10.6439 11.3818 10.6494C13.5999 10.7461 15.819 10.8418 18.0371 10.9385L15.8955 8.79785C15.5052 8.40741 15.5053 7.77428 15.8955 7.38379Z"/></svg>
      </a>
    </div>
    <div class="progress" aria-hidden="true"></div>
@@ -53,25 +53,25 @@
  <section class="filters">
    <div id="viewMode" class="seg view-mode" role="radiogroup" data-i18n-aria="viewAria">
      <button type="button" role="radio" data-view="stream" data-i18n-title="viewStreamTitle">
-        <!-- Lucide "radio" (ISC license) -->
-        <svg viewBox="0 0 24 24" aria-hidden="true"><path d="M4.9 19.1C1 15.2 1 8.8 4.9 4.9"/><path d="M7.8 16.2c-2.3-2.3-2.3-6.1 0-8.5"/><circle cx="12" cy="12" r="2"/><path d="M16.2 7.8c2.3 2.3 2.3 6.1 0 8.5"/><path d="M19.1 4.9C23 8.8 23 15.1 19.1 19"/></svg>
+        <!-- Papicons "play" (MIT license) -->
+        <svg class="pi" viewBox="0 0 24 24" aria-hidden="true"><path d="M6 14.7702V9.22986C6 5.65215 6 3.86329 7.12572 3.31615C8.25145 2.769 9.65806 3.8742 12.4713 6.08459L14.9962 8.06842C17.3011 9.87942 18.4535 10.7849 18.4535 12C18.4535 13.2151 17.3011 14.1206 14.9962 15.9316L12.4713 17.9154C9.65806 20.1258 8.25145 21.231 7.12572 20.6839C6 20.1367 6 18.3479 6 14.7702Z"/></svg>
        <span data-i18n="viewStream">Stream</span>
      </button>
      <button type="button" role="radio" data-view="period" data-i18n-title="viewPeriodTitle">
-        <!-- Lucide "calendar-range" (ISC license) -->
-        <svg viewBox="0 0 24 24" aria-hidden="true"><rect width="18" height="18" x="3" y="4" rx="2"/><path d="M16 2v4M3 10h18M8 2v4M17 14h-6M13 18H7M7 14h.01M17 18h.01"/></svg>
+        <!-- Papicons "calendar" (MIT license) -->
+        <svg class="pi" viewBox="0 0 24 24" aria-hidden="true"><path d="M3 6.125C3 4.39911 4.39911 3 6.125 3H17.875C19.6009 3 21 4.39911 21 6.125C21 7.16053 20.1605 8 19.125 8H4.875C3.83947 8 3 7.16053 3 6.125Z"/><path d="M18.1738 10.0049C19.6939 10.0931 20.9069 11.3061 20.9951 12.8262C20.9979 12.8742 20.9965 12.9274 20.9971 13H17C14.7909 13 13 14.7909 13 17V20.9893C12.6268 20.9985 12.1964 21 11.6865 21H9.28613C7.15368 21 6.08721 20.9996 5.26465 20.6035C4.44822 20.2103 3.78966 19.5518 3.39648 18.7354C3.00036 17.9128 3 16.8463 3 14.7139C3 13.1148 2.99981 12.3151 3.29688 11.6982C3.59175 11.0859 4.08592 10.5918 4.69824 10.2969C5.31511 9.99981 6.1148 10 7.71387 10H17.7793C17.9843 10 18.0872 9.99986 18.1738 10.0049Z"/><path d="M17 15H20.6396C20.4588 15.3973 20.2137 15.7662 19.9092 16.0889C19.8695 16.1309 19.8269 16.1731 19.7422 16.2578L17.3428 18.6572C16.2546 19.7454 15.677 20.318 15 20.6357V17C15 15.9643 15.7872 15.113 16.7959 15.0107L17 15Z"/></svg>
        <span data-i18n="viewPeriod">Time range</span>
      </button>
    </div>
    <div id="period" class="period" hidden>
      <button id="perPrev" class="btn tool" type="button" data-i18n-title="perPrev" data-i18n-aria="perPrev">
-        <svg viewBox="0 0 24 24" aria-hidden="true"><path d="m15 18-6-6 6-6"/></svg>
+        <svg class="pi" viewBox="0 0 24 24" aria-hidden="true"><path d="M12.8037 4.43946C13.3895 3.85368 14.339 3.85367 14.9248 4.43946C15.5105 5.02525 15.5106 5.97481 14.9248 6.56055L9.6211 11.8643L14.9248 17.167C15.5105 17.7527 15.5104 18.7023 14.9248 19.2881C14.339 19.8739 13.3895 19.8739 12.8037 19.2881L6.43946 12.9248C5.85368 12.339 5.85368 11.3885 6.43946 10.8027L12.8037 4.43946Z"/></svg>
      </button>
      <input id="perFrom" type="datetime-local" data-i18n-title="perFrom" data-i18n-aria="perFrom">
      <span class="muted" aria-hidden="true">→</span>
      <input id="perTo" type="datetime-local" data-i18n-title="perTo" data-i18n-aria="perTo">
      <button id="perNext" class="btn tool" type="button" data-i18n-title="perNext" data-i18n-aria="perNext">
-        <svg viewBox="0 0 24 24" aria-hidden="true"><path d="m9 18 6-6-6-6"/></svg>
+        <svg class="pi" viewBox="0 0 24 24" aria-hidden="true"><path d="M10.5605 4.43946C9.97469 3.85368 9.02517 3.85367 8.43938 4.43946C7.85372 5.02525 7.85365 5.97481 8.43938 6.56055L13.7431 11.8643L8.43938 17.167C7.85366 17.7527 7.8538 18.7023 8.43938 19.2881C9.02517 19.8739 9.97469 19.8739 10.5605 19.2881L16.9247 12.9248C17.5105 12.339 17.5105 11.3885 16.9247 10.8027L10.5605 4.43946Z"/></svg>
      </button>
      <button id="perOut" class="btn tool" type="button" data-i18n-title="perOut" data-i18n-aria="perOut">
        <!-- Lucide "zoom-out" (ISC license) -->
@@ -105,13 +105,14 @@
      <option value="host" data-i18n="srcHost">Host system</option>
      <option value="kernel" data-i18n="srcKernel">Kernel (dmesg)</option>
      <option value="audit">Audit</option>
+      <option value="file" data-i18n="srcFile">Files</option>
      <option value="logstream">LogStream</option>
    </select>
    <span class="spacer"></span>
    <span id="count" class="muted"></span>
    <div class="export">
      <button id="exportBtn" class="btn tool" type="button" aria-haspopup="menu" aria-expanded="false">
-        <svg viewBox="0 0 24 24" aria-hidden="true"><path d="M12 3v12M7 10l5 5 5-5M4 17v3h16v-3"/></svg>
+        <svg class="pi" viewBox="0 0 24 24" aria-hidden="true"><path fill-rule="evenodd" clip-rule="evenodd" d="M21.0002 12.0001C21.0002 13.4832 20.9277 14.7482 20.8215 15.8048C20.5477 18.5277 18.5287 20.5475 15.8058 20.8214C14.7491 20.9277 13.4835 21.0001 12.0002 21.0001C10.5171 21.0001 9.25211 20.9276 8.1955 20.8214C5.47245 20.5476 3.45266 18.5279 3.17889 15.8048C3.07268 14.7482 3.00019 13.4832 3.00018 12.0001C3.00018 10.5168 3.07265 9.25118 3.17889 8.19446C3.45277 5.47156 5.47254 3.45259 8.1955 3.17883C9.25211 3.07262 10.5171 3.00013 12.0002 3.00012C13.4835 3.00012 14.7491 3.07259 15.8058 3.17883C18.5286 3.45273 20.5476 5.47169 20.8215 8.19446C20.9277 9.25118 21.0002 10.5168 21.0002 12.0001ZM16.8781 12.8282C17.2686 12.4377 17.2686 11.8047 16.8781 11.4142C16.4875 11.0242 15.8544 11.0239 15.4641 11.4142L13.0978 13.7814C13.1877 12.0389 13.2765 10.2953 13.3664 8.55286C13.3719 8.44571 13.3775 8.33773 13.383 8.23059C13.4013 7.87733 13.2776 7.53707 13.0275 7.28723C12.7778 7.0377 12.4217 6.89661 12.05 6.89661C11.6782 6.8968 11.322 7.03739 11.0724 7.28723C10.8224 7.53705 10.6988 7.87736 10.717 8.23059C10.7225 8.33771 10.7281 8.44574 10.7336 8.55286C10.8203 10.2344 10.9076 11.9171 10.9943 13.5988L8.80878 11.4142C8.41822 11.0241 7.78508 11.0238 7.39471 11.4142C7.00435 11.8045 7.00467 12.4377 7.39471 12.8282L11.4289 16.8634C11.8194 17.2539 12.4534 17.2539 12.8439 16.8634L16.8781 12.8282Z"/></svg>
        <span class="lbl" data-i18n="export">Export</span>
      </button>
      <div id="exportMenu" class="menu" role="menu" hidden>
@@ -131,7 +132,7 @@
  <div id="authWarn" class="auth-warn" role="status" hidden>
    <span data-i18n="authOff"></span>
    <button id="authWarnClose" class="icon-btn" type="button" data-i18n-aria="close">
-      <svg viewBox="0 0 24 24"><path d="M6 6l12 12M18 6 6 18"/></svg>
+      <svg class="pi" viewBox="0 0 24 24"><path d="M17.958 3.95801C18.4881 3.95763 19.0166 4.18846 19.4141 4.58594C19.8115 4.98342 20.0424 5.51194 20.042 6.04199C20.0423 6.57267 19.8115 7.06147 19.4141 7.41406C19.3082 7.50811 19.2025 7.60225 19.0967 7.69629C17.4824 9.13092 15.8673 10.5653 14.2529 12C15.8673 13.4347 17.4824 14.8691 19.0967 16.3037C19.2025 16.3978 19.3082 16.4919 19.4141 16.5859C19.8115 16.9385 20.0423 17.4273 20.042 17.958C20.0424 18.4881 19.8115 19.0166 19.4141 19.4141C19.0166 19.8115 18.4881 20.0424 17.958 20.042C17.4273 20.0423 16.9385 19.8115 16.5859 19.4141C16.4919 19.3082 16.3978 19.2025 16.3037 19.0967C14.8691 17.4824 13.4347 15.8673 12 14.2529C10.5653 15.8673 9.13092 17.4824 7.69629 19.0967C7.60225 19.2025 7.50811 19.3082 7.41406 19.4141C7.06147 19.8115 6.57267 20.0423 6.04199 20.042C5.51194 20.0424 4.98342 19.8115 4.58594 19.4141C4.18846 19.0166 3.95763 18.4881 3.95801 17.958C3.95773 17.4273 4.18854 16.9385 4.58594 16.5859C4.69176 16.4919 4.7975 16.3978 4.90332 16.3037C6.51743 14.8692 8.13186 13.4345 9.74609 12C8.13186 10.5655 6.51743 9.13076 4.90332 7.69629C4.7975 7.60225 4.69176 7.50811 4.58594 7.41406C4.18854 7.06147 3.95773 6.57267 3.95801 6.04199C3.95763 5.51194 4.18846 4.98342 4.58594 4.58594C4.98342 4.18846 5.51194 3.95763 6.04199 3.95801C6.57267 3.95773 7.06147 4.18854 7.41406 4.58594C7.50811 4.69176 7.60225 4.7975 7.69629 4.90332C9.13076 6.51743 10.5655 8.13186 12 9.74609C13.4345 8.13186 14.8692 6.51743 16.3037 4.90332C16.3978 4.7975 16.4919 4.69176 16.5859 4.58594C16.9385 4.18854 17.4273 3.95773 17.958 3.95801Z"/></svg>
    </button>
  </div>
  <div id="error" class="error-banner" hidden></div>
@@ -139,6 +140,7 @@

  <div id="table" class="table" hidden>
    <div id="listHead" class="list-head" role="presentation">
+      <span data-col="src"><span class="lbl" data-i18n="colSrc">Source</span></span>
      <span data-col="rcv"><span class="lbl" data-i18n="colRcv">Received</span><i class="grip" data-i18n-title="colGrip"></i></span>
      <span data-col="mt"><span class="lbl" data-i18n="colMt">Message time</span><i class="grip" data-i18n-title="colGrip"></i></span>
      <span data-col="sev"><span class="lbl" data-i18n="colSev">Severity</span><i class="grip" data-i18n-title="colGrip"></i></span>
@@ -150,7 +152,7 @@
    <main id="list" class="list"></main>
  </div>
  <div id="empty" class="empty" hidden>
-    <svg viewBox="0 0 24 24" aria-hidden="true"><path d="M4 6h16M4 12h10M4 18h7"/></svg>
+    <svg class="pi" viewBox="0 0 24 24" aria-hidden="true"><path d="M12 3C13.483 3.00001 14.7481 3.07251 15.8047 3.17871C18.5276 3.45246 20.5473 5.47153 20.8213 8.19434C20.9275 9.25103 21 10.5167 21 12C21 13.483 20.9275 14.7481 20.8213 15.8047C20.5475 18.5277 18.5277 20.5475 15.8047 20.8213C14.7481 20.9275 13.483 21 12 21C10.5168 21 9.251 20.9275 8.19434 20.8213C5.47156 20.5473 3.45246 18.5276 3.17871 15.8047C3.0725 14.7481 3 13.483 3 12C3 10.5167 3.07248 9.25103 3.17871 8.19434C3.45264 5.4717 5.47172 3.45267 8.19434 3.17871C9.251 3.07248 10.5168 3.00001 12 3ZM11.5 15C10.1892 15 9.21877 15.0253 8.5625 15.0518C7.86067 15.0801 7 15.2977 7 16C7 16.7023 7.86067 16.9199 8.5625 16.9482C9.21877 16.9747 10.1892 17 11.5 17C12.8108 17 13.7812 16.9747 14.4375 16.9482C15.1393 16.9199 16 16.7023 16 16C16 15.2977 15.1393 15.0801 14.4375 15.0518C13.7812 15.0253 12.8108 15 11.5 15ZM10.5 11C9.59007 11 8.89128 11.0199 8.38867 11.043C7.73172 11.0732 7 11.3424 7 12C7 12.6576 7.73172 12.9268 8.38867 12.957C8.89128 12.9801 9.59007 13 10.5 13C11.4099 13 12.1087 12.9801 12.6113 12.957C13.2683 12.9268 14 12.6576 14 12C14 11.3424 13.2683 11.0732 12.6113 11.043C12.1087 11.0199 11.4099 11 10.5 11ZM12 7C10.4872 7 9.38276 7.02718 8.65332 7.05469C7.92733 7.08208 7 7.27351 7 8C7 8.72649 7.92733 8.91792 8.65332 8.94531C9.38276 8.97282 10.4872 9 12 9C13.5128 9 14.6172 8.97282 15.3467 8.94531C16.0727 8.91792 17 8.72649 17 8C17 7.27351 16.0727 7.08208 15.3467 7.05469C14.6172 7.02718 13.5128 7 12 7Z"/></svg>
    <p><strong data-i18n="emptyTitle">No matching logs.</strong></p>
    <p class="muted" data-i18n="emptyHint">Widen the time range or send syslog messages to port 514 (UDP or TCP).</p>
  </div>
@@ -159,7 +161,7 @@
    <span id="conn" class="conn"></span>
    <span id="stats" class="muted"></span>
    <button id="toTop" class="icon-btn to-top" type="button" data-i18n-title="toTop" data-i18n-aria="toTop" hidden>
-      <svg viewBox="0 0 24 24" aria-hidden="true"><path d="M12 19V5M5 12l7-7 7 7"/></svg>
+      <svg class="pi" viewBox="0 0 24 24" aria-hidden="true"><path d="M19.4243 10.6673C20.01 11.2531 20.01 12.2026 19.4243 12.7884C18.8385 13.3741 17.8889 13.3741 17.3032 12.7884L13.4252 8.90949C13.5632 11.7245 13.7002 14.5399 13.8383 17.3548C13.8466 17.5243 13.8554 17.6941 13.8637 17.8636C13.8901 18.394 13.7021 18.9036 13.3266 19.2786C12.952 19.6535 12.4203 19.8636 11.8637 19.8636C11.3072 19.8635 10.7754 19.6534 10.4008 19.2786C10.0254 18.9036 9.83733 18.3939 9.8637 17.8636C9.87202 17.6941 9.88078 17.5243 9.88909 17.3548C10.0225 14.6352 10.1562 11.9153 10.2895 9.19563L6.69671 12.7884C6.11099 13.3741 5.16142 13.374 4.57562 12.7884C3.98983 12.2026 3.98983 11.2531 4.57562 10.6673L10.9389 4.30305C11.5247 3.71726 12.4752 3.71726 13.061 4.30305L19.4243 10.6673Z"/></svg>
    </button>
  </footer>

@@ -168,33 +170,47 @@
      <header>
        <h2 id="settingsTitle" data-i18n="settings">Settings</h2>
        <button id="closeSettings" class="icon-btn" type="button" data-i18n-aria="close">
-          <svg viewBox="0 0 24 24"><path d="M6 6l12 12M18 6 6 18"/></svg>
+          <svg class="pi" viewBox="0 0 24 24"><path d="M17.958 3.95801C18.4881 3.95763 19.0166 4.18846 19.4141 4.58594C19.8115 4.98342 20.0424 5.51194 20.042 6.04199C20.0423 6.57267 19.8115 7.06147 19.4141 7.41406C19.3082 7.50811 19.2025 7.60225 19.0967 7.69629C17.4824 9.13092 15.8673 10.5653 14.2529 12C15.8673 13.4347 17.4824 14.8691 19.0967 16.3037C19.2025 16.3978 19.3082 16.4919 19.4141 16.5859C19.8115 16.9385 20.0423 17.4273 20.042 17.958C20.0424 18.4881 19.8115 19.0166 19.4141 19.4141C19.0166 19.8115 18.4881 20.0424 17.958 20.042C17.4273 20.0423 16.9385 19.8115 16.5859 19.4141C16.4919 19.3082 16.3978 19.2025 16.3037 19.0967C14.8691 17.4824 13.4347 15.8673 12 14.2529C10.5653 15.8673 9.13092 17.4824 7.69629 19.0967C7.60225 19.2025 7.50811 19.3082 7.41406 19.4141C7.06147 19.8115 6.57267 20.0423 6.04199 20.042C5.51194 20.0424 4.98342 19.8115 4.58594 19.4141C4.18846 19.0166 3.95763 18.4881 3.95801 17.958C3.95773 17.4273 4.18854 16.9385 4.58594 16.5859C4.69176 16.4919 4.7975 16.3978 4.90332 16.3037C6.51743 14.8692 8.13186 13.4345 9.74609 12C8.13186 10.5655 6.51743 9.13076 4.90332 7.69629C4.7975 7.60225 4.69176 7.50811 4.58594 7.41406C4.18854 7.06147 3.95773 6.57267 3.95801 6.04199C3.95763 5.51194 4.18846 4.98342 4.58594 4.58594C4.98342 4.18846 5.51194 3.95763 6.04199 3.95801C6.57267 3.95773 7.06147 4.18854 7.41406 4.58594C7.50811 4.69176 7.60225 4.7975 7.69629 4.90332C9.13076 6.51743 10.5655 8.13186 12 9.74609C13.4345 8.13186 14.8692 6.51743 16.3037 4.90332C16.3978 4.7975 16.4919 4.69176 16.5859 4.58594C16.9385 4.18854 17.4273 3.95773 17.958 3.95801Z"/></svg>
        </button>
      </header>

      <div class="set-body">
+        <div class="set-side">
        <nav id="setNav" class="set-nav" role="tablist" aria-orientation="vertical">
          <button type="button" role="tab" data-tab="locale">
-            <svg viewBox="0 0 24 24"><circle cx="12" cy="12" r="9"/><path d="M3 12h18M12 3a14 14 0 0 1 0 18M12 3a14 14 0 0 0 0 18"/></svg>
+            <svg class="pi" viewBox="0 0 24 24"><path fill-rule="evenodd" clip-rule="evenodd" d="M12 2C17.5228 2 22 6.47715 22 12C22 17.5228 17.5228 22 12 22C6.47715 22 2 17.5228 2 12C2 6.47715 6.47715 2 12 2ZM4.73926 9C4.6407 9 4.55559 9.06709 4.52056 9.15921C4.18489 10.0421 4 10.9994 4 12C4 16.4183 7.58172 20 12 20C12.5088 20 13 19.6719 13 19.1631C12.9998 18.149 12.1772 17.3271 11.1631 17.3271H8.82617C8.24987 17.3271 7.78223 16.8595 7.78223 16.2832C7.78238 15.707 8.24997 15.2402 8.82617 15.2402H8.86914C9.46936 15.2402 9.9559 14.7535 9.95605 14.1533V13.6436C9.95605 12.7619 9.24192 12.0471 8.36035 12.0469H8.00195C7.16056 12.0469 6.47852 11.3648 6.47852 10.5234C6.47849 9.68216 5.79632 9.00016 4.95508 9H4.73926ZM12.5176 7.22559C12.1868 7.54639 12 7.98745 12 8.44824C12 9.38888 12.7625 10.1513 13.7031 10.1514H15.5762C16.9149 10.1516 18 11.2374 18 12.5762V13.5C18 13.7937 18.0844 14.0672 18.2303 14.2981C18.687 15.021 19.6577 14.4662 19.8323 13.629C19.942 13.1032 20 12.5584 20 12C20 9.1841 18.5448 6.7087 16.3457 5.28326C15.667 4.84332 14.7905 5.02052 14.2099 5.58373L12.5176 7.22559Z"/></svg>
            <span data-i18n="tabLocale">Localization</span>
          </button>
          <button type="button" role="tab" data-tab="filters">
-            <svg viewBox="0 0 24 24"><path d="M3 12V4a1 1 0 0 1 1-1h8l9 9-9 9z"/><circle cx="8" cy="8" r="1.5"/></svg>
+            <svg class="pi" viewBox="0 0 24 24"><path d="M12 16.7647C12.548 16.7647 15.4122 18.8669 17.0571 20.1092C17.6198 20.5343 18.404 20.2599 18.5179 19.5639C18.7378 18.2207 19 15.9104 19 12.5294C19 10.7935 18.9309 9.3398 18.8339 8.15435C18.6173 5.50766 16.8501 3.35738 14.2069 3.10193C13.5553 3.03896 12.8206 3 12 3C11.1794 3 10.4447 3.03896 9.79312 3.10193C7.14989 3.35738 5.38274 5.50766 5.16613 8.15435C5.06911 9.3398 5 10.7935 5 12.5294C5 15.9104 5.26216 18.2207 5.48208 19.5639C5.59602 20.2599 6.38016 20.5343 6.94294 20.1092C8.58775 18.8669 11.452 16.7647 12 16.7647Z"/></svg>
            <span data-i18n="tabFilters">Patterns</span>
          </button>
          <button type="button" role="tab" data-tab="sources">
-            <svg viewBox="0 0 24 24"><path d="M21 8 12 3 3 8v8l9 5 9-5z"/><path d="m3 8 9 5 9-5M12 13v8"/></svg>
+            <svg class="pi" viewBox="0 0 24 24"><path d="M18.2951 12C19.7572 12 20.4886 12.0001 20.9132 12.373C21.1023 12.5392 21.247 12.7507 21.3331 12.9873C21.5261 13.5183 21.2604 14.1996 20.7296 15.5615C20.0195 17.3837 19.6643 18.2954 19.005 18.915C18.7039 19.198 18.3604 19.4325 17.9874 19.6104C17.1707 19.9998 16.1923 20 14.2365 20H9.83216C7.88742 20 6.91479 20.0001 6.10462 19.6182C5.68919 19.4222 5.31062 19.1555 4.98548 18.8311C4.35134 18.1983 4.02084 17.2832 3.36146 15.4531C2.89275 14.1522 2.65852 13.5012 2.83997 12.9941C2.93109 12.7397 3.0895 12.5147 3.29798 12.3428C3.71355 12.0002 4.40527 12 5.78822 12H18.2951Z"/><path d="M8.70033 4C9.18415 4 9.42625 4.00031 9.64661 4.05078C10.0597 4.14544 10.4322 4.36852 10.7101 4.68848C10.8584 4.8592 10.9725 5.07288 11.2003 5.5C11.428 5.92693 11.5414 6.14083 11.6896 6.31152C11.9674 6.63143 12.3401 6.85454 12.7531 6.94922C12.9735 6.99971 13.2162 7 13.7003 7H17.0001C18.6569 7.00011 20.0001 8.34321 20.0001 10H4.00013V8.57129C4.00013 7.10682 4.00001 6.37442 4.25013 5.80078C4.55276 5.10714 5.10631 4.55267 5.79994 4.25C6.37366 3.99969 7.1065 4 8.57142 4H8.70033Z"/></svg>
            <span data-i18n="tabSources">Log sources</span>
          </button>
          <button type="button" role="tab" data-tab="interface">
-            <svg viewBox="0 0 24 24"><rect x="3" y="4" width="18" height="12" rx="2"/><path d="M8 20h8M12 16v4"/></svg>
+            <svg class="pi" viewBox="0 0 24 24"><path fill-rule="evenodd" clip-rule="evenodd" d="M12.2432 3.85718C17.3475 3.85745 22.5648 8.07142 20.5615 12.8572C19.1729 16.1744 14.1433 14.7708 12.7051 16.3572C11.0115 18.2256 15.4772 21.8572 9.93164 21.8572C5.10708 21.857 3 17.8276 3 12.8572C3 7.88661 7.13857 3.85718 12.2432 3.85718ZM8 13.8572C6.89543 13.8572 6 14.7526 6 15.8572C6 16.9617 6.89543 17.8572 8 17.8572C9.10457 17.8572 10 16.9617 10 15.8572C10 14.7526 9.10457 13.8572 8 13.8572ZM9 7.85718C7.89543 7.85718 7 8.75261 7 9.85718C7 10.9617 7.89543 11.8572 9 11.8572C10.1046 11.8572 11 10.9617 11 9.85718C11 8.75261 10.1046 7.85718 9 7.85718ZM15 6.85718C13.8954 6.85718 13 7.75261 13 8.85718C13 9.96175 13.8954 10.8572 15 10.8572C16.1046 10.8572 17 9.96175 17 8.85718C17 7.75261 16.1046 6.85718 15 6.85718Z"/></svg>
            <span data-i18n="tabInterface">Appearance</span>
          </button>
          <button type="button" role="tab" data-tab="data">
-            <svg viewBox="0 0 24 24"><ellipse cx="12" cy="5" rx="8" ry="3"/><path d="M4 5v14c0 1.7 3.6 3 8 3s8-1.3 8-3V5M4 12c0 1.7 3.6 3 8 3s8-1.3 8-3"/></svg>
+            <svg class="pi" viewBox="0 0 24 24"><path d="M12.9346 9.07617C16.1274 8.97649 17.7241 8.92669 18.3164 9.44434C18.3817 9.50143 18.4048 9.52447 18.4639 9.58789C18.9997 10.1637 19 11.5073 19 14.1934C19 16.8343 18.9998 18.155 18.2256 19.0117C18.1579 19.0866 18.0866 19.1579 18.0117 19.2256C17.155 19.9998 15.8343 20 13.1934 20H10.8066C8.16574 20 6.84497 19.9998 5.98828 19.2256C5.91344 19.1579 5.84206 19.0866 5.77441 19.0117C5.00023 18.155 5 16.8343 5 14.1934C5 11.5073 5.00025 10.1637 5.53613 9.58789C5.59516 9.52447 5.61826 9.50143 5.68359 9.44434C6.27589 8.92669 7.8726 8.97649 11.0654 9.07617C11.3654 9.08554 11.6769 9.09082 12 9.09082C12.3231 9.09082 12.6346 9.08554 12.9346 9.07617ZM12 12C11.2869 12 10.725 12.0166 10.3047 12.0371C9.66842 12.0682 9 12.363 9 13C9 13.637 9.66842 13.9318 10.3047 13.9629C10.725 13.9834 11.2869 14 12 14C12.7131 14 13.275 13.9834 13.6953 13.9629C14.3316 13.9318 15 13.637 15 13C15 12.363 14.3316 12.0682 13.6953 12.0371C13.275 12.0166 12.7131 12 12 12ZM18.6494 4C19.3953 4.00014 19.9999 4.60474 20 5.35059C20 6.01305 19.5206 6.57368 18.8623 6.64746C17.5465 6.79493 15.1509 7 12 7C8.8491 7 6.4535 6.79493 5.1377 6.64746C4.47935 6.57368 4 6.01305 4 5.35059C4.00014 4.60474 4.60474 4.00014 5.35059 4H18.6494Z"/></svg>
            <span data-i18n="tabData">Database</span>
          </button>
+          <button type="button" role="tab" data-tab="api">
+            <svg class="pi" viewBox="0 0 24 24"><path d="M7.89844 4.00888C8.41797 3.90461 8.98572 4.02996 9.45801 4.34482C9.93011 4.65974 10.2637 5.13577 10.3672 5.65537C10.4715 6.17558 10.3378 6.6978 10.0127 7.11826C9.93916 7.21355 9.86552 7.3091 9.79199 7.40439C8.60774 8.93905 7.42354 10.4742 6.23926 12.0089C7.42347 13.5434 8.60781 15.0788 9.79199 16.6134C9.86545 16.7086 9.93924 16.8043 10.0127 16.8995C10.3376 17.32 10.4716 17.8422 10.3672 18.3624C10.2636 18.882 9.93018 19.3581 9.45801 19.6729C8.9858 19.9877 8.41788 20.1131 7.89844 20.0089C7.37808 19.9052 6.94777 19.5799 6.68457 19.1183C6.62496 19.0138 6.5645 18.9092 6.50488 18.8048C5.42979 16.9218 4.35439 15.0374 3.2793 13.1544C3.21976 13.0501 3.16012 12.9452 3.10059 12.8409C2.99425 12.6543 2.93402 12.4428 2.91895 12.2257V11.7901C2.9341 11.5735 2.99449 11.3632 3.10059 11.1769C3.16018 11.0725 3.21971 10.9678 3.2793 10.8634C4.35444 8.98025 5.42974 7.09611 6.50488 5.21298C6.56456 5.10847 6.6249 5.00402 6.68457 4.89951C6.94774 4.43754 7.37788 4.1126 7.89844 4.00888Z"/><path d="M13.9395 4.34482C14.4118 4.02991 14.9794 3.90451 15.499 4.00888C16.0195 4.11266 16.4498 4.43761 16.7129 4.89951C16.7725 5.0039 16.833 5.10859 16.8926 5.21298C17.9677 7.09599 19.0431 8.98037 20.1182 10.8634C20.1777 10.9676 20.2374 11.0726 20.2969 11.1769C20.4381 11.4251 20.4979 11.7166 20.4785 12.0079C20.4981 12.2997 20.4385 12.5923 20.2969 12.8409C20.2373 12.9452 20.1777 13.0501 20.1182 13.1544C19.0431 15.0374 17.9677 16.9217 16.8926 18.8048C16.833 18.9092 16.7725 19.0138 16.7129 19.1183C16.4497 19.5799 16.0193 19.9052 15.499 20.0089C14.9796 20.1132 14.4117 19.9876 13.9395 19.6729C13.4673 19.3582 13.1339 18.8819 13.0303 18.3624C12.9258 17.8421 13.0598 17.3201 13.3848 16.8995C13.4583 16.8043 13.532 16.7086 13.6055 16.6134C14.7897 15.0788 15.974 13.5435 17.1582 12.0089C15.9739 10.4743 14.7897 8.93902 13.6055 7.40439C13.532 7.3092 13.4582 7.21345 13.3848 7.11826C13.0597 6.69783 12.9261 6.17556 13.0303 5.65537C13.1338 5.13567 13.4672 4.65974 13.9395 4.34482Z"/></svg>
+            <span data-i18n="tabApi">API</span>
+          </button>
        </nav>
+        <div id="setActions" class="set-actions">
+          <button id="setSave" class="btn save" type="button" disabled>
+            <svg class="pi" viewBox="0 0 24 24" aria-hidden="true"><path d="M18.9531 3.99225C19.48 3.9335 20.0214 4.09638 20.4492 4.43854C20.8769 4.78081 21.1545 5.27298 21.2129 5.79987C21.2716 6.32695 21.1064 6.84596 20.7617 7.24908C20.5953 7.44382 20.4282 7.63931 20.2617 7.83405C17.2647 11.3402 14.2675 14.8465 11.2705 18.3526C11.1041 18.5473 10.937 18.7428 10.7705 18.9376C10.52 19.23 10.1569 19.4123 9.76758 19.4493C9.50945 19.4735 9.25416 19.4313 9.02344 19.3311C8.84537 19.272 8.67957 19.1816 8.53906 19.0606C8.45329 18.9866 8.36702 18.9129 8.28125 18.8389C6.73535 17.5051 5.18946 16.1708 3.64356 14.837C3.55775 14.7629 3.47155 14.6884 3.38574 14.6143C2.98278 14.2673 2.74666 13.7828 2.74707 13.252C2.7467 12.7223 2.98292 12.1892 3.38574 11.7862C3.78869 11.3833 4.32181 11.1482 4.85156 11.1485C5.38243 11.148 5.86681 11.3832 6.21387 11.7862C6.28792 11.872 6.36247 11.9582 6.43652 12.044C7.4622 13.2328 8.48806 14.4216 9.51367 15.6104C12.0681 12.1955 14.6234 8.78117 17.1777 5.36627C17.3311 5.16129 17.4844 4.95602 17.6377 4.75104C17.9553 4.32607 18.426 4.05079 18.9531 3.99225Z"/></svg>
+            <span data-i18n="saveSettings">Save</span>
+          </button>
+          <button id="setCancel" class="btn ghost" type="button" disabled data-i18n="cancelSettings">Cancel</button>
+          <p id="setState" class="set-state" role="status"></p>
+        </div>
+        </div>

        <div class="set-panels">
          <!-- Localization -->
@@ -312,6 +328,15 @@
              <p class="muted small src-help" data-i18n="selfHelp"></p>
            </section>

+            <section class="set-section span">
+              <h3 data-i18n="filesTitle">Log files</h3>
+              <div id="fileList" class="file-list"></div>
+              <div class="file-toolbar">
+                <button id="addFile" class="btn primary" type="button" data-i18n="addFile">+ Add a file</button>
+              </div>
+              <p class="muted small src-help" data-i18n="filesHelp"></p>
+            </section>
+
            <section class="set-section span">
              <h3 data-i18n="dockerTitle">Docker containers</h3>
              <p id="dockerStatus" class="docker-status"></p>
@@ -425,6 +450,31 @@
              </div>
            </section>
          </div>
+
+          <!-- API tokens -->
+          <div class="set-panel wide" role="tabpanel" data-panel="api" hidden>
+            <section class="set-section">
+              <div class="sec-head">
+                <h3 data-i18n="tokensTitle">API tokens</h3>
+                <span id="tokenCount" class="muted small"></span>
+              </div>
+              <p class="muted small" data-i18n="tokensHelp"></p>
+              <div id="tokenList" class="token-list"></div>
+              <form id="tokenForm" class="token-form">
+                <input id="tokenName" type="text" class="dk-filter" maxlength="80" autocomplete="off" spellcheck="false" data-i18n-ph="tokenNamePh" data-i18n-aria="tokenNamePh">
+                <button id="tokenCreate" class="btn" type="submit" data-i18n="tokenCreate">Add a token</button>
+              </form>
+              <div id="tokenNew" class="token-new" hidden></div>
+            </section>
+            <section class="set-section">
+              <h3 data-i18n="tokensUse">Usage</h3>
+              <p class="muted small" data-i18n="tokensUseHelp"></p>
+              <div class="token-example-box">
+                <pre id="tokenExample" class="token-example"></pre>
+                <button id="tokenExampleCopy" class="btn" type="button" data-i18n="tokenExampleCopy">Copy the command</button>
+              </div>
+            </section>
+          </div>
        </div>
      </div>
    </div>
@@ -23,8 +23,8 @@
      <button type="button" role="radio" data-lang="en">EN</button>
    </div>
    <button id="themeBtn" class="icon-btn" type="button" data-i18n-title="theme" data-i18n-aria="theme">
-      <svg class="sun" viewBox="0 0 24 24"><circle cx="12" cy="12" r="4"/><path d="M12 2v2M12 20v2M4.9 4.9l1.4 1.4M17.7 17.7l1.4 1.4M2 12h2M20 12h2M4.9 19.1l1.4-1.4M17.7 6.3l1.4-1.4"/></svg>
-      <svg class="moon" viewBox="0 0 24 24"><path d="M21 12.8A9 9 0 1 1 11.2 3a7 7 0 0 0 9.8 9.8z"/></svg>
+      <svg class="pi sun" viewBox="0 0 24 24"><path d="M15 12.8572C15 14.514 13.6569 15.8572 12 15.8572C10.3431 15.8572 9 14.514 9 12.8572C9 11.2003 10.3431 9.85718 12 9.85718C13.6569 9.85718 15 11.2003 15 12.8572Z"/><path d="M11.9994 9.85732C13.6563 9.85732 14.9994 11.2005 14.9994 12.8573C14.9993 14.514 13.6562 15.8573 11.9994 15.8573C10.3429 15.8571 8.99959 14.5139 8.99943 12.8573C8.99943 11.2006 10.3428 9.85754 11.9994 9.85732Z"/><path fill-rule="evenodd" clip-rule="evenodd" d="M12.224 2.71279C13.1976 2.82269 13.8745 3.93342 15.2279 6.1542C17.808 5.82774 19.0985 5.66373 19.7914 6.35635C19.8975 6.46241 19.9909 6.58086 20.0707 6.70791C20.5916 7.53758 20.1456 8.75872 19.2533 11.2011C21.1171 13.0146 22.0492 13.9219 21.9399 14.8954C21.9231 15.0444 21.8898 15.1914 21.8403 15.3329C21.5165 16.2576 20.283 16.6707 17.8168 17.496C17.561 20.084 17.4324 21.3779 16.6029 21.8993C16.4762 21.979 16.3409 22.0442 16.1996 22.0937C15.2748 22.4171 14.1824 21.7104 11.9994 20.2968C9.81658 21.7103 8.72506 22.4171 7.80021 22.0937C7.65874 22.0441 7.52282 21.9791 7.39592 21.8993C6.56669 21.3778 6.43883 20.0837 6.18303 17.496C3.71676 16.6707 2.48338 16.2576 2.15959 15.3329C2.11005 15.1914 2.07674 15.0444 2.05998 14.8954C1.95064 13.9218 2.88271 13.0146 4.7465 11.2011C3.8542 8.75861 3.40816 7.53759 3.92912 6.70791C4.00891 6.58086 4.10231 6.46241 4.20842 6.35635C4.9014 5.66383 6.19193 5.82775 8.77189 6.1542C10.1253 3.93342 10.8022 2.82269 11.7758 2.71279C11.9247 2.696 12.0751 2.69599 12.224 2.71279ZM11.9994 7.85732C9.23819 7.85754 6.99943 10.096 6.99943 12.8573C6.99959 15.6185 9.23829 17.8571 11.9994 17.8573C14.7608 17.8573 16.9993 15.6186 16.9994 12.8573C16.9994 10.0959 14.7609 7.85732 11.9994 7.85732Z"/></svg>
+      <svg class="pi moon" viewBox="0 0 24 24"><path d="M11 3.85718C11.7891 3.85718 12.0004 5.04248 11.4641 5.62132C10.5555 6.60206 10 7.91462 10 9.35718C10 12.3947 12.4624 14.8572 15.5 14.8572C16.9423 14.8572 18.2542 14.3018 19.2346 13.3934C19.8136 12.8568 20.9996 13.0677 21 13.8572C21.0027 18.8277 16.9706 21.8572 12 21.8572C7.02944 21.8572 3 17.8277 3 12.8572C3 7.88661 6.02944 3.85718 11 3.85718Z"/></svg>
    </button>
  </div>

@@ -22,8 +22,13 @@
  --hit: rgba(99, 102, 241, .18);
  --shadow: 0 10px 30px rgba(15, 23, 42, .12);
  --chip-l: 38%;            /* lightness of project-colored text (labels, Docker apps) */
+  --src-syslog: #64748b;    /* source badges: syslog received over the network */
+  --src-docker: #1d6fd6;    /* Docker containers */
+  --src-kernel: #b4540a;    /* kernel ring buffer (dmesg) */
+  --src-host: #b0407a;      /* /var/log files of the host system */
  --src-audit: #7c4dbd;     /* audit events (auditd) */
  --src-ls: #1f9aa3;        /* LogStream internal logs */
+  --src-file: #5f8a1f;      /* log files (Settings > Sources > Log files) */
  --src-tint: 6%;           /* background tint of their rows */

  --sev-crit: #be123c;
@@ -73,8 +78,13 @@
  --hit: rgba(129, 140, 248, .28);
  --shadow: 0 10px 30px rgba(0, 0, 0, .5);
  --chip-l: 70%;
+  --src-syslog: #94a3b8;
+  --src-docker: #5aa2f5;
+  --src-kernel: #e7a25a;
+  --src-host: #e58bbb;
  --src-audit: #a983e6;
  --src-ls: #3cc3cc;
+  --src-file: #9ccc54;
  --src-tint: 9%;
  --sev-crit: #fb7185;
  --sev-err: #f87171;
@@ -108,8 +118,13 @@
    --hit: rgba(129, 140, 248, .28);
    --shadow: 0 10px 30px rgba(0, 0, 0, .5);
  --chip-l: 70%;
+    --src-syslog: #94a3b8;
+    --src-docker: #5aa2f5;
+    --src-kernel: #e7a25a;
+    --src-host: #e58bbb;
    --src-audit: #a983e6;
    --src-ls: #3cc3cc;
+    --src-file: #9ccc54;
    --src-tint: 9%;
    --sev-crit: #fb7185;
    --sev-err: #f87171;
@@ -143,6 +158,7 @@ body {
 button, input, select { font: inherit; color: inherit; }
 button { cursor: pointer; }
 svg { fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
+svg.pi { fill: currentColor; stroke: none; } /* Papicons: filled shapes, no outline */
 .muted { color: var(--muted); }
 .small { font-size: 12.5px; }
 [hidden] { display: none !important; }
@@ -340,12 +356,12 @@ body.busy .progress::after {
 .list { margin: 6px 20px 0; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
 .list:empty { display: none; }

-/* Columns: received, message time, severity, host, app, tag codes, message. Widths come from
+/* Columns: source, received, message time, severity, host, app, tag codes, message. Widths come from
   --col-* (set on #table when a column has been resized, see app.js), shared by
   the header and every row through subgrid so that the columns line up. */
 .table {
  display: grid;
-  grid-template-columns: var(--col-rcv, max-content) var(--col-mt, max-content) var(--col-sev, 4.6rem)
+  grid-template-columns: minmax(3.9rem, max-content) var(--col-rcv, max-content) var(--col-mt, max-content) var(--col-sev, 4.6rem)
    var(--col-host, minmax(5rem, 9rem)) var(--col-app, minmax(4rem, 8rem)) var(--codes-w) minmax(0, 1fr);
  column-gap: 12px;
  margin: 6px 20px 0; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
@@ -375,20 +391,19 @@ body.col-resizing, body.col-resizing * { cursor: col-resize !important; user-sel

 .row {
  display: grid;
-  grid-template-columns: max-content max-content 4.6rem minmax(5rem, 9rem) minmax(4rem, 8rem) var(--codes-w) 1fr;
+  grid-template-columns: max-content max-content max-content 4.6rem minmax(5rem, 9rem) minmax(4rem, 8rem) var(--codes-w) 1fr;
  gap: 0 12px; align-items: baseline;
-  padding: 5px 14px 5px 11px;
+  padding: 3px 14px 3px 11px;
  border-left: 3px solid transparent;
  border-bottom: 1px solid var(--border);
-  font-family: var(--log-font, var(--mono)); font-size: var(--log-size);
+  font-family: var(--log-font, var(--mono)); font-size: var(--log-size); line-height: 1.35;
  font-variant-ligatures: none; /* keep -> != etc. as typed */
  cursor: pointer;
 }
 .row:last-child { border-bottom: 0; }
 /* Settings > Interface > Density: compact fits about 50% more lines on screen */
-:root[data-density="compact"] .row { padding-top: 1px; padding-bottom: 1px; line-height: 1.25; }
-:root[data-density="compact"] .row .sev { padding-top: 0; padding-bottom: 0; line-height: 1.3; }
-:root[data-density="compact"] .row .codes b { padding-top: 0; padding-bottom: 0; line-height: 1.2; }
+:root[data-density="compact"] .row { padding-top: 1px; padding-bottom: 1px; line-height: 1.2; }
+:root[data-density="compact"] .row :is(.src-badge, .sev, .codes b) { line-height: 1.15; }
 .row:hover { background: var(--row-hover); }
 .row:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
 .row.new { animation: flash 1.2s ease-out; }
@@ -406,7 +421,7 @@ body.col-resizing, body.col-resizing * { cursor: col-resize !important; user-sel
 .sev {
  justify-self: start; max-width: 100%; overflow: hidden; text-overflow: ellipsis;
  font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: .03em;
-  padding: 1px 6px; border-radius: 5px;
+  padding: 0 6px; border-radius: 5px; line-height: 1.3;
  color: var(--sev); background: color-mix(in srgb, var(--sev) 14%, transparent);
 }
 .sev-crit    { --sev: var(--tag-error); --sev-text: var(--tag-error-text); }
@@ -420,15 +435,21 @@ body.col-resizing, body.col-resizing * { cursor: col-resize !important; user-sel
 .row.sev-crit, .row.sev-err, .row.sev-warning { border-left-color: var(--sev); }
 .row.sev-crit, .row.sev-err { background: color-mix(in srgb, var(--sev) 7%, transparent); }
 .row .host[data-act], .row .app[data-act] { cursor: pointer; }
-/* Audit events and LogStream internal logs: colored edge (over the severity
-   one), light tint, badge before the app name. */
+/* Source badge at the start of every row, fixed width, one color per source.
+   Audit events, log files and LogStream internal logs also get a colored edge
+   (over the severity one) and a light tint. */
+.row.src-syslog { --src: var(--src-syslog); }
+.row.src-docker { --src: var(--src-docker); }
+.row.src-kernel { --src: var(--src-kernel); }
+.row.src-host { --src: var(--src-host); }
 .row.src-audit { --src: var(--src-audit); }
 .row.src-logstream { --src: var(--src-ls); }
-.row.src-audit, .row.src-logstream { border-left-color: var(--src); background: color-mix(in srgb, var(--src) var(--src-tint), transparent); }
-.row.src-audit:hover, .row.src-logstream:hover { background: color-mix(in srgb, var(--src) 13%, var(--row-hover)); }
+.row.src-file { --src: var(--src-file); }
+.row.src-audit, .row.src-logstream, .row.src-file { border-left-color: var(--src); background: color-mix(in srgb, var(--src) var(--src-tint), transparent); }
+.row.src-audit:hover, .row.src-logstream:hover, .row.src-file:hover { background: color-mix(in srgb, var(--src) 13%, var(--row-hover)); }
 .src-badge {
-  display: inline-block; margin-right: 5px; padding: 0 4px; border-radius: 4px; vertical-align: 1px;
-  font: 700 9.5px/1.45 var(--sans); letter-spacing: .04em;
+  justify-self: start; box-sizing: content-box; width: 6ch; padding: 0 4px; border-radius: 4px; text-align: center;
+  font-family: var(--log-font, var(--mono)); font-size: 10px; font-weight: 700; letter-spacing: .02em; line-height: 1.3;
  color: var(--src); background: color-mix(in srgb, var(--src) 16%, transparent);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--src) 40%, transparent);
 }
@@ -443,10 +464,10 @@ body.col-resizing, body.col-resizing * { cursor: col-resize !important; user-sel
 .row .codes { white-space: nowrap; overflow: hidden; }
 .row .codes > span { display: inline-flex; gap: 3px; vertical-align: 1px; }
 .row .codes b, .tag-code {
-  min-width: 2.2ch; padding: 1px 4px; border-radius: 5px; text-align: center;
+  min-width: 2.2ch; padding: 0 4px; border-radius: 5px; text-align: center;
  /* same font as the severity badges (the log font) */
  font-family: var(--log-font, var(--mono)); font-size: 10.5px; font-weight: 700; letter-spacing: .03em;
-  line-height: 1.35; font-variant-numeric: tabular-nums;
+  line-height: 1.3; font-variant-numeric: tabular-nums;
  background: var(--code-bg); color: #0b0f17;
 }
 .row .codes b.more { background: none; box-shadow: inset 0 0 0 1px var(--code-bg); color: var(--muted); }
@@ -539,11 +560,24 @@ dialog.settings {
 dialog.settings .dlg { display: flex; flex-direction: column; height: 100%; padding: 0; }
 dialog.settings .dlg > header { padding: 14px 16px 14px 22px; border-bottom: 1px solid var(--border); }
 .set-body { flex: 1; min-height: 0; display: grid; grid-template-columns: minmax(176px, max-content) minmax(0, 1fr); }
-.set-nav {
-  display: flex; flex-direction: column; gap: 2px;
-  padding: 12px 10px; border-right: 1px solid var(--border);
+.set-side {
+  display: flex; flex-direction: column; min-height: 0; overflow-y: auto;
+  border-right: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel-2) 50%, transparent);
 }
+.set-nav { display: flex; flex-direction: column; gap: 2px; padding: 12px 10px; }
+/* Save / Cancel, under the section labels: Save takes the accent color while changes wait. */
+.set-actions {
+  display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 10px 12px; padding-top: 12px;
+  border-top: 1px solid var(--border);
+}
+.set-actions .btn { flex: 1; justify-content: center; }
+.set-actions .btn.save { color: var(--muted); }
+.set-actions .btn svg { width: 16px; height: 16px; }
+.set-actions.dirty .btn.save { background: var(--accent); border-color: var(--accent); color: #fff; box-shadow: 0 0 0 3px var(--accent-soft); }
+.set-actions.dirty .btn.save:hover { filter: brightness(1.08); }
+.set-state { flex-basis: 100%; margin: 2px 2px 0; font-size: 12px; color: var(--muted); }
+.set-actions.dirty .set-state { color: var(--accent); font-weight: 550; }
 .set-nav button {
  display: flex; align-items: center; gap: 10px;
  height: 38px; padding: 0 12px; border: 0; border-radius: 9px;
@@ -571,10 +605,11 @@ dialog.settings .dlg > header { padding: 14px 16px 14px 22px; border-bottom: 1px
 .set-panel .preview-list { margin: 14px 0 10px; pointer-events: none; }
 .preview-list .row {
  cursor: default;
-  grid-template-columns: max-content max-content minmax(0, max-content) minmax(0, 1fr);
-  grid-template-areas: "rcv sev host app" "msg msg msg msg";
+  grid-template-columns: max-content max-content max-content minmax(0, max-content) minmax(0, 1fr);
+  grid-template-areas: "src rcv sev host app" "msg msg msg msg msg";
  gap: 3px 10px;
 }
+.preview-list .row .src-badge { grid-area: src; }
 .preview-list .row time.rcv { grid-area: rcv; }
 .preview-list .row time.mt { display: none; }
 .preview-list .row .sev { grid-area: sev; }
@@ -751,11 +786,40 @@ input.switch:focus-visible { outline: 2px solid var(--accent); outline-offset: 2
 .tag-row .icon-btn svg { width: 15px; height: 15px; }
 .opt input { display: none; }
 .opt:has(input:checked) { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
+/* Log files (Settings > Sources) */
+.file-list { display: flex; flex-direction: column; gap: 4px; }
+.file-row {
+  display: grid; align-items: center; gap: 6px;
+  grid-template-columns: auto minmax(7rem, 1fr) minmax(10rem, 2fr) minmax(9rem, 1.4fr) minmax(6rem, .8fr) 26px;
+  padding: 6px 6px 6px 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--panel);
+}
+.file-row.off > input[type="text"], .file-row.off > select { opacity: .6; }
+.file-row input[type="text"] {
+  height: 28px; padding: 0 8px; min-width: 0;
+  border: 1px solid var(--border); border-radius: 6px; background: var(--panel); font-size: 12.5px; outline: 0;
+}
+.file-row input.mono { font-family: var(--mono); }
+.file-row input[type="text"]:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
+.file-row select.field { height: 28px; }
+.file-row .icon-btn { width: 26px; height: 26px; border-radius: 6px; }
+.file-row .icon-btn svg { width: 15px; height: 15px; }
+.file-row .fr-regex, .file-row .fr-status, .file-row .fr-sample { grid-column: 2 / -1; }
+.file-row .fr-sample {
+  margin: 0; font: 11.5px var(--mono); color: var(--muted);
+  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
+}
+.file-row .fr-sample[hidden] { display: none; }
+.file-row .fr-regex[hidden] { display: none; }
+.file-row .fr-status { margin: 0 !important; font-size: 12px; }
+.file-toolbar { margin-top: 10px; }
 .tag-row .err { grid-column: 1 / -1; color: var(--sev-err); font-size: 12px; }
 .tag-row .err:empty { display: none; }

 /* ---------- Mobile ---------- */
@media (max-width: 760px) {
+  .file-row { grid-template-columns: auto minmax(0, 1fr) 26px; }
+  .file-row [data-del] { grid-column: 3; grid-row: 1; }
+  .file-row > [data-f="path"], .file-row > [data-f="format"], .file-row > [data-f="host"] { grid-column: 2 / -1; }
  body { font-size: 13.5px; }
  .topbar { flex-wrap: wrap; padding: 8px 16px; gap: 8px 10px; }
  .search { order: 3; flex-basis: 100%; max-width: none; }
@@ -780,10 +844,11 @@ input.switch:focus-visible { outline: 2px solid var(--accent); outline-offset: 2
  .table .list { display: block; margin: 0; }
  .list-head { display: none; }
  .row, .table .row {
-    grid-template-columns: auto auto 1fr auto;
-    grid-template-areas: "rcv sev host codes" "msg msg msg msg";
+    grid-template-columns: auto auto auto 1fr auto;
+    grid-template-areas: "src rcv sev host codes" "msg msg msg msg msg";
    gap: 3px 8px; padding: 8px 12px 8px 10px;
  }
+  .row .src-badge { grid-area: src; }
  .row time.rcv { grid-area: rcv; }
  .row time.mt { display: none; } /* still shown in the details panel */
  .row .sev { grid-area: sev; }
@@ -797,10 +862,11 @@ input.switch:focus-visible { outline: 2px solid var(--accent); outline-offset: 2
  .field-grid { grid-template-columns: 1fr; gap: 4px; }
  dialog.settings { height: calc(100vh - 24px); width: calc(100vw - 16px); }
  .set-body { grid-template-columns: 1fr; grid-template-rows: auto minmax(0, 1fr); }
-  .set-nav {
-    display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); padding: 6px;
-    border-right: 0; border-bottom: 1px solid var(--border);
-  }
+  .set-side { border-right: 0; border-bottom: 1px solid var(--border); overflow: visible; }
+  .set-nav { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); padding: 6px; }
+  .set-actions { margin: 0 6px 6px; padding-top: 6px; align-items: center; }
+  .set-actions .btn { flex: 0 0 auto; height: 30px; }
+  .set-state { flex: 1; flex-basis: auto; margin: 0; text-align: right; }
  .set-nav button {
    flex-direction: column; justify-content: center; height: auto; padding: 6px 2px; gap: 3px;
    font-size: 11.5px; text-align: center;
@@ -847,3 +913,32 @@ body.login-page {
 .login-card input:focus { outline: 0; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
 .login-card .btn.primary { height: 38px; justify-content: center; margin-top: 6px; font-size: 14px; }
 .login-err { margin: 0; color: var(--sev-err); font-size: 13px; }
+
+/* API tokens (Settings > API) */
+.token-list { display: flex; flex-direction: column; gap: 4px; margin: 12px 0 10px; }
+.token-row {
+  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 2px 12px; align-items: center;
+  padding: 8px 10px; border-radius: 8px; background: var(--panel-2); font-size: 12.5px;
+}
+.token-row b { font-weight: 600; overflow-wrap: anywhere; }
+.token-row code { font-family: var(--mono); font-size: 11.5px; color: var(--muted); }
+.token-row .muted { grid-column: 1; font-size: 11.5px; }
+.token-row .btn { grid-row: 1 / span 2; grid-column: 2; height: 28px; font-size: 12px; }
+.token-empty { color: var(--muted); font-size: 12.5px; }
+.token-form { display: flex; gap: 10px; align-items: center; }
+.token-form .btn { height: 28px; font-size: 12px; }
+.token-new { margin-top: 12px; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--accent); background: var(--accent-soft); }
+.token-secret { display: flex; gap: 10px; align-items: center; margin-top: 8px; }
+.token-label { font-size: 12.5px; font-weight: 600; white-space: nowrap; }
+.token-row.revoked b, .token-row.revoked code { text-decoration: line-through; opacity: .6; }
+.token-row.pending { border: 1px dashed var(--accent); }
+.token-example-box { display: flex; gap: 10px; align-items: flex-start; margin-top: 8px; }
+.token-example-box .token-example { flex: 1; min-width: 0; margin: 0; }
+.token-example-box .btn { height: 28px; font-size: 12px; }
+.token-example mark { background: var(--accent-soft); color: var(--accent); border-radius: 3px; padding: 0 2px; font-weight: 600; }
+.token-secret code { flex: 1; min-width: 0; font: 12px var(--mono); overflow-wrap: anywhere; user-select: all; }
+.token-secret .btn { height: 28px; font-size: 12px; }
+.token-example {
+  margin: 8px 0 0; padding: 8px 12px; border-radius: 8px; background: var(--panel-2);
+  font: 12px var(--mono); white-space: pre-wrap; overflow-wrap: anywhere;
+}
Author	SHA1	Message	Date
cedricandClaude Opus 5.5	0bfea7cd93	UI: replace Lucide icons with Papicons Swap the inline SVG icons of the web UI (top bar, view mode, time range, export, close, empty state, back to top, settings tabs, save, delete, lock) for their Papicons equivalents (MIT, Association Papillon). Papicons are filled shapes: they carry class "pi", which sets fill: currentColor and no stroke, so the stroked Lucide icons that stay (zoom out, Docker badge) are unaffected. Add THIRD_PARTY_NOTICES.md with the Papicons MIT notice and a pointer from both READMEs. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>	2026-11-01 20:03:15 +01:00
cedricandClaude Opus 5.5	3e703c8792	UI files: ETag and revalidation on each load The embedded UI was served without any cache header, so a browser or a proxy could keep an old app.js after an update (seen with the API token display). Each file now has an ETag (hash of its content, computed at startup); the page, app.js and style.css are sent with "no-cache", so each load costs a 304 without body until the next version. Fonts are cached for 30 days. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>	2026-11-01 16:11:41 +01:00
claude Bot	367420961e	Merge feat/api-tokens-save: token changes wait for Save, curl example	2026-11-01 16:03:24 +01:00
cedricandClaude Opus 5.5	7ee27bb1ab	Settings > API: token changes wait for Save, curl example with the token Adding or revoking an API token is now pending like the other settings: Save applies it, Cancel drops it. After Save each new token is shown once with a copy button, and the curl example uses it, highlighted, with its own copy button. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>	2026-11-01 16:00:05 +01:00
claude Bot	e77fcb326d	Merge feat/logs-api: reading API /api/v1/logs and API tokens	2026-11-01 15:52:42 +01:00
cedricandClaude Opus 5.5	c8f45044a3	Reading API /api/v1/logs with a stable cursor, and API tokens GET /api/v1/logs?query=<LogsQL>&since=<cursor\|time\|duration>&limit=<n> returns the logs after a cursor, oldest first, with next_cursor and has_more. The cursor is a position on _time (the reception time) plus the number of rows already returned among those sharing that exact time, ordered by a hash of their content, so following the cursors gives every row once even within groups cut by a page. Rows count once older than the lag (30 s), and nothing is returned while the disk spool still holds logs. API tokens (Settings > API) give read-only access to /api/v1/ as "Authorization: Bearer lst_...", in every auth mode; only their SHA-256 is kept in /data/api_tokens.json. README (EN/FR) documents the route and an n8n workflow keeping the cursor in $getWorkflowStaticData. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>	2026-11-01 15:47:57 +01:00
cedric	d61384ed2c	Update docker-compose.yml	2026-10-07 18:25:26 +02:00
cedricandClaude Opus 5.5	dd8ca74cad	Log list: tighter rows, badges no longer set the line height Rows drop from ~29px to ~24px (normal density, medium font) and from ~18.6px to ~18px in compact; long messages still wrap. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>	2026-10-07 18:09:06 +02:00
claude BotandClaude Opus 5.5	2ca89b1c6d	Source badge at the start of every log line Each row now starts with a fixed-width badge naming its source, one color per source: SYSLOG, DOCKER, KERNEL (dmesg), HOST (/var/log), AUDIT, FILE and LS. The AUDIT/FILE/LS badges move there from before the app name; those sources keep their colored edge and tint. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>	2026-10-05 13:16:36 +02:00
cedricandClaude Opus 5.5	1a3b3ee23a	Log files: find the history by date, count from the first poll A file turned on was read from its start to find its last hour: with a Traefik access log that holds months of lines (never rotated by Traefik), LogStream spent minutes on old lines that were all left out, and new lines waited behind them. Entries sent during the first poll were also left out of the count shown in Settings. - start of the FILES_BACKFILL history found by bisection on the dates of the lines; files without dates: only new lines - up to 16 reads of 4 MB per file and per poll - status "behind" (bytes left to read), shown as "Reading the history: N MB left" - the status of a file exists before its first entries are counted Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>	2026-10-05 12:42:09 +02:00
cedricandClaude Opus 5.5	194edee6de	Settings: Save and Cancel buttons instead of saving each change Changes made in the Settings window show at once but are only kept with the Save button, placed under the tab labels; it takes the accent color while changes are waiting. Cancel goes back to the saved settings, and closing the window (or the page) with unsaved changes asks first. Tags are now sent as a whole list (PUT /api/tags, nothing saved when one is invalid, the error gives its position) and "Restore default tags" shows GET /api/tags/defaults until Save. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>	2026-10-05 11:03:01 +02:00
cedricandClaude Opus 5.5	dcb09e619e	Log files: one file per entry, format detection - a path is one file (wildcards refused for now); the name defaults to the file name - format "auto" (the default): detected from the last 50 lines of the file, the structured format followed by at least 80 % of them (Traefik access JSON, JSON lines, CLF, logfmt), else plain text; done again when the format changes, shown in the status ("Format detected: …"); any other format forces it - POST /api/files/detect {path}: found / permission / empty, detected format and last line, shown under the row as soon as the path is typed (POST so that read-only accounts cannot read files through it) - README (EN/FR) updated Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>	2026-10-05 10:33:26 +02:00
cedricandClaude Opus 5.5	087d9e7b30	Log files source: follow the logs of Traefik, nginx and other programs Files source (source_type=file), declared in Settings > Log sources > Log files (/data/files.json, 50 at most): name (= app), path as mounted in the container (file or glob, rotated copies .1/.gz left out, 200 files per glob), format, optional host, switch. - formats: plain text (level detected, leading timestamp read and removed), JSON lines (msg/time/level keys, numeric pino levels, other keys as fields, nested ones dotted), logfmt, access log CLF (nginx, Apache, Traefik CLF with router/backend/duration), Traefik access log in JSON (summary "GET host/path 200 · 12.5 ms · router · client"), regular expression with named groups time/level/msg/host/app/status; 5xx = err, 4xx = warning; fields named like LogStream's own renamed field_<name> - indented lines (text) and non-matching lines (regex) added to the previous entry, which waits 2 s for them - inode + offset per file in /data/files-state.json, rotation (end of .1 read first), copytruncate, file renamed within the glob; last FILES_BACKFILL (1h) of dated lines read when turned on, new files read from their start - status per file (files followed, entries read, not found / permission) UI: rows with switch, name, path, format, host (regex field when needed), status line; green edge, tint and FILE badge in the list, "Files" in the source filter, HTTP fields first in the details, FR/EN. docker-compose, .env.example and README (EN/FR): mounts, formats, FILES_BACKFILL. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>	2026-10-05 10:27:54 +02:00
cedric	e87186e476	Update docker-compose.yml	2026-10-05 07:54:42 +02:00
cedric	7e9aefa755	Update .env.example	2026-10-05 07:54:06 +02:00