modules: wire tool-runtime app credentials as own-secrets

The six modules that run a mesh-<mod> tool-runtime sidecar read an app
credential from an env var the manifest never provided, so the sidecar
crash-looped in the whole-mesh dry-run (e.g. "no Plex token — set
MESH_PLEX_TOKEN"). These are operator-set app secrets, so deliver them the
same way cloudflare-dns delivers its API token: an own-secret file mounted
read-only, with a MESH_<APP>_*_FILE env pointing at the mount, and the
runtime code preferring that file (falling back to the existing env so
nothing regresses).

- plex: own-secret token -> /run/secrets/token, MESH_PLEX_TOKEN_FILE
- bazarr: own-secret api-key -> /run/secrets/api-key, MESH_BAZARR_API_KEY_FILE
- ombi: own-secret api-key -> /run/secrets/api-key, MESH_OMBI_API_KEY_FILE
- home-assistant: own-secret token -> /run/secrets/token, MESH_HOMEASSISTANT_TOKEN_FILE
- nzbget: own-secret password -> /run/secrets/password, MESH_NZBGET_PASSWORD_FILE (URL stays plain env)
- qbittorrent: own-secret password -> /run/secrets/password, MESH_QBITTORRENT_PASSWORD_FILE (URL stays plain env)

The operator now completes each with `secret accept <node> <module> <name> --from <file>`.
tsc passes for all six.

modules/bazarr/client.ts

@@ -43,6 +43,14 @@ function meshConfig(file?: string): Record<string, string> {
   catch { return {}; }
 }
 
+/** Read a secret the mesh mounted at a file path (an own-secret delivered by `secret accept`);
+ *  absent or unreadable yields undefined so callers fall back rather than crash. */
+function readSecret(file?: string): string | undefined {
+  if (!file) return undefined;
+  try { return readFileSync(file, "utf8").trim(); }
+  catch { return undefined; }
+}
+
 export class BazarrClient {
   readonly baseUrl: string;
 
@@ -58,7 +66,7 @@ export class BazarrClient {
   static fromEnv(env: NodeJS.ProcessEnv = process.env): BazarrClient {
     const cfg = meshConfig(env.MESH_BAZARR_CONFIG_FILE);
     const url = cfg.url ?? env.MESH_BAZARR_URL;
-    const apiKey = cfg.apiKey ?? env.MESH_BAZARR_API_KEY;
+    const apiKey = cfg.apiKey ?? readSecret(env.MESH_BAZARR_API_KEY_FILE) ?? env.MESH_BAZARR_API_KEY;
     if (!url) throw new Error("no Bazarr URL — set MESH_BAZARR_URL");
     if (!apiKey) throw new Error("no Bazarr API key — set MESH_BAZARR_API_KEY");
     return new BazarrClient(url, apiKey);

modules/bazarr/module.json

@@ -8,7 +8,8 @@
     "module.bazarr.subtitle.downloaded"
   ],
   "own-secrets": {
-    "broker": "/var/lib/mesh/bazarr/broker"
+    "broker": "/var/lib/mesh/bazarr/broker",
+    "api-key": "/var/lib/mesh/bazarr/api-key"
   },
   "listens": [
     {
@@ -87,12 +88,14 @@
       "network": "host",
       "volumes": [
         "/var/lib/mesh/bazarr/broker:/run/secrets/broker:ro",
+        "/var/lib/mesh/bazarr/api-key:/run/secrets/api-key:ro",
         "/var/lib/mesh/bazarr/config.json:/run/config/config.json:ro",
         "/services/bazarr/config:/var/lib/bazarr/config:ro"
       ],
       "env": {
         "MESH_BROKER_FILE": "/run/secrets/broker",
         "MESH_BAZARR_URL": "http://127.0.0.1:6767",
+        "MESH_BAZARR_API_KEY_FILE": "/run/secrets/api-key",
         "MESH_BAZARR_CONFIG_FILE": "/run/config/config.json",
         "MESH_BAZARR_CONFIG_DIR": "/var/lib/bazarr/config"
       },

modules/home-assistant/client.ts

@@ -27,6 +27,14 @@ function meshConfig(file?: string): Record<string, string> {
   catch { return {}; }
 }
 
+/** Read a secret the mesh mounted at a file path (an own-secret delivered by `secret accept`);
+ *  absent or unreadable yields undefined so callers fall back rather than crash. */
+function readSecret(file?: string): string | undefined {
+  if (!file) return undefined;
+  try { return readFileSync(file, "utf8").trim(); }
+  catch { return undefined; }
+}
+
 export class HomeAssistantClient {
   readonly baseUrl: string;
 
@@ -45,7 +53,7 @@ export class HomeAssistantClient {
   static fromEnv(env: NodeJS.ProcessEnv = process.env): HomeAssistantClient {
     const cfg = meshConfig(env.MESH_HOMEASSISTANT_CONFIG_FILE);
     const url = cfg.url ?? env.MESH_HOMEASSISTANT_URL ?? `http://127.0.0.1:${env.HOMEASSISTANT_PORT ?? "8123"}`;
-    const token = cfg.token ?? env.MESH_HOMEASSISTANT_TOKEN;
+    const token = cfg.token ?? readSecret(env.MESH_HOMEASSISTANT_TOKEN_FILE) ?? env.MESH_HOMEASSISTANT_TOKEN;
     if (!token) throw new Error("no Home Assistant token — set MESH_HOMEASSISTANT_TOKEN");
     return new HomeAssistantClient(url, token);
   }

modules/home-assistant/module.json

@@ -8,7 +8,8 @@
     "module.home-assistant.state.changed"
   ],
   "own-secrets": {
-    "broker": "/var/lib/mesh/home-assistant/broker"
+    "broker": "/var/lib/mesh/home-assistant/broker",
+    "token": "/var/lib/mesh/home-assistant/token"
   },
   "listens": [
     {
@@ -61,12 +62,14 @@
       "network": "host",
       "volumes": [
         "/var/lib/mesh/home-assistant/broker:/run/secrets/broker:ro",
+        "/var/lib/mesh/home-assistant/token:/run/secrets/token:ro",
         "/var/lib/mesh/home-assistant/config.json:/run/config/config.json:ro",
         "/services/home-assistant/config:/var/lib/home-assistant/config:ro"
       ],
       "env": {
         "MESH_BROKER_FILE": "/run/secrets/broker",
         "MESH_HOMEASSISTANT_URL": "http://127.0.0.1:8123",
+        "MESH_HOMEASSISTANT_TOKEN_FILE": "/run/secrets/token",
         "MESH_HOMEASSISTANT_CONFIG_FILE": "/run/config/config.json",
         "MESH_HOMEASSISTANT_CONFIG_DIR": "/var/lib/home-assistant/config"
       },

modules/nzbget/client.ts

@@ -48,6 +48,14 @@ function meshConfig(file?: string): Record<string, string> {
   catch { return {}; }
 }
 
+/** Read a secret the mesh mounted at a file path (an own-secret delivered by `secret accept`);
+ *  absent or unreadable yields undefined so callers fall back rather than crash. */
+function readSecret(file?: string): string | undefined {
+  if (!file) return undefined;
+  try { return readFileSync(file, "utf8").trim(); }
+  catch { return undefined; }
+}
+
 export class NzbgetClient {
   readonly rpcUrl: string;
   private readonly auth: string;
@@ -66,7 +74,7 @@ export class NzbgetClient {
   static fromEnv(env: NodeJS.ProcessEnv = process.env): NzbgetClient {
     const cfg = meshConfig(env.MESH_NZBGET_CONFIG_FILE);
     const url = cfg.url ?? env.MESH_NZBGET_URL;
-    const password = cfg.password ?? env.MESH_NZBGET_PASSWORD;
+    const password = cfg.password ?? readSecret(env.MESH_NZBGET_PASSWORD_FILE) ?? env.MESH_NZBGET_PASSWORD;
     if (!url || !password) {
       throw new Error("NZBGet not configured — set MESH_NZBGET_URL and MESH_NZBGET_PASSWORD");
     }

modules/nzbget/module.json

@@ -10,7 +10,8 @@
   ],
   "consumes": [],
   "own-secrets": {
-    "broker": "/var/lib/mesh/nzbget/broker"
+    "broker": "/var/lib/mesh/nzbget/broker",
+    "password": "/var/lib/mesh/nzbget/password"
   },
   "listens": [
     {
@@ -74,12 +75,14 @@
       "network": "host",
       "volumes": [
         "/var/lib/mesh/nzbget/broker:/run/secrets/broker:ro",
+        "/var/lib/mesh/nzbget/password:/run/secrets/password:ro",
         "/var/lib/mesh/nzbget/config.json:/run/config/config.json:ro",
         "/services/nzbget/config:/var/lib/nzbget/config:ro"
       ],
       "env": {
         "MESH_BROKER_FILE": "/run/secrets/broker",
         "MESH_NZBGET_URL": "http://127.0.0.1:6789",
+        "MESH_NZBGET_PASSWORD_FILE": "/run/secrets/password",
         "MESH_NZBGET_CONFIG_FILE": "/run/config/config.json",
         "MESH_NZBGET_CONFIG_DIR": "/var/lib/nzbget/config"
       },

modules/ombi/client.ts

@@ -29,6 +29,14 @@ function meshConfig(file?: string): Record<string, string> {
   catch { return {}; }
 }
 
+/** Read a secret the mesh mounted at a file path (an own-secret delivered by `secret accept`);
+ *  absent or unreadable yields undefined so callers fall back rather than crash. */
+function readSecret(file?: string): string | undefined {
+  if (!file) return undefined;
+  try { return readFileSync(file, "utf8").trim(); }
+  catch { return undefined; }
+}
+
 export class OmbiClient {
   readonly baseUrl: string;
 
@@ -44,7 +52,7 @@ export class OmbiClient {
   static fromEnv(env: NodeJS.ProcessEnv = process.env): OmbiClient {
     const cfg = meshConfig(env.MESH_OMBI_CONFIG_FILE);
     const url = cfg.url ?? env.MESH_OMBI_URL;
-    const apiKey = cfg.apiKey ?? env.MESH_OMBI_API_KEY;
+    const apiKey = cfg.apiKey ?? readSecret(env.MESH_OMBI_API_KEY_FILE) ?? env.MESH_OMBI_API_KEY;
     if (!url) throw new Error("no Ombi URL — set MESH_OMBI_URL");
     if (!apiKey) throw new Error("no Ombi API key — set MESH_OMBI_API_KEY");
     return new OmbiClient(url, apiKey);

modules/ombi/module.json

@@ -9,7 +9,8 @@
     "module.ombi.request.approved"
   ],
   "own-secrets": {
-    "broker": "/var/lib/mesh/ombi/broker"
+    "broker": "/var/lib/mesh/ombi/broker",
+    "api-key": "/var/lib/mesh/ombi/api-key"
   },
   "listens": [
     {
@@ -66,12 +67,14 @@
       "network": "host",
       "volumes": [
         "/var/lib/mesh/ombi/broker:/run/secrets/broker:ro",
+        "/var/lib/mesh/ombi/api-key:/run/secrets/api-key:ro",
         "/var/lib/mesh/ombi/config.json:/run/config/config.json:ro",
         "/services/ombi/config:/var/lib/ombi/config:ro"
       ],
       "env": {
         "MESH_BROKER_FILE": "/run/secrets/broker",
         "MESH_OMBI_URL": "http://127.0.0.1:3579",
+        "MESH_OMBI_API_KEY_FILE": "/run/secrets/api-key",
         "MESH_OMBI_CONFIG_FILE": "/run/config/config.json",
         "MESH_OMBI_CONFIG_DIR": "/var/lib/ombi/config"
       },

modules/plex/client.ts

@@ -5,6 +5,17 @@
 import { existsSync, readFileSync } from "node:fs";
 import { join } from "node:path";
 
+/** Read a secret the mesh mounted at a file path (an own-secret); absent or unreadable yields
+ *  undefined, so callers can fall back rather than crash. */
+function readSecret(path: string | undefined): string | undefined {
+  if (!path) return undefined;
+  try {
+    return readFileSync(path, "utf8").trim();
+  } catch {
+    return undefined;
+  }
+}
+
 export interface PlexLibrary {
   key: string;
   title: string;
@@ -47,7 +58,9 @@ export class PlexClient {
   static fromEnv(env: NodeJS.ProcessEnv = process.env): PlexClient {
     const url = env.MESH_PLEX_URL ?? `http://127.0.0.1:${env.PLEX_PORT ?? "32400"}`;
     const dataDir = env.MESH_PLEX_DATA_DIR ?? "/var/lib/plex";
-    const token = env.MESH_PLEX_TOKEN ?? PlexClient.detectToken(dataDir);
+    // The operator-provided token is an own-secret the mesh mounts at MESH_PLEX_TOKEN_FILE (delivered
+    // by `secret accept`); prefer it, fall back to a bare env var, then to discovery from the data dir.
+    const token = readSecret(env.MESH_PLEX_TOKEN_FILE) ?? env.MESH_PLEX_TOKEN ?? PlexClient.detectToken(dataDir);
     if (!token) throw new Error("no Plex token — set MESH_PLEX_TOKEN or make the data dir readable");
     return new PlexClient(url, token);
   }

modules/plex/module.json

@@ -13,7 +13,8 @@
     "module.*.download.completed"
   ],
   "own-secrets": {
-    "broker": "/var/lib/mesh/plex/broker"
+    "broker": "/var/lib/mesh/plex/broker",
+    "token": "/var/lib/mesh/plex/token"
   },
   "listens": [
     {
@@ -95,11 +96,13 @@
       "network": "host",
       "volumes": [
         "/var/lib/mesh/plex/broker:/run/secrets/broker:ro",
+        "/var/lib/mesh/plex/token:/run/secrets/token:ro",
         "/services/plex/config:/var/lib/plex/config:ro"
       ],
       "env": {
         "MESH_BROKER_FILE": "/run/secrets/broker",
         "MESH_PLEX_URL": "http://127.0.0.1:32400",
+        "MESH_PLEX_TOKEN_FILE": "/run/secrets/token",
         "MESH_PLEX_DATA_DIR": "/var/lib/plex"
       }
     }

modules/qbittorrent/client.ts

@@ -39,6 +39,14 @@ function meshConfig(file?: string): Record<string, string> {
   catch { return {}; }
 }
 
+/** Read a secret the mesh mounted at a file path (an own-secret delivered by `secret accept`);
+ *  absent or unreadable yields undefined so callers fall back rather than crash. */
+function readSecret(file?: string): string | undefined {
+  if (!file) return undefined;
+  try { return readFileSync(file, "utf8").trim(); }
+  catch { return undefined; }
+}
+
 export class QbittorrentClient {
   readonly baseUrl: string;
   private sid: string | null = null;
@@ -60,7 +68,7 @@ export class QbittorrentClient {
   static fromEnv(env: NodeJS.ProcessEnv = process.env): QbittorrentClient {
     const cfg = meshConfig(env.MESH_QBITTORRENT_CONFIG_FILE);
     const url = cfg.url ?? env.MESH_QBITTORRENT_URL;
-    const password = cfg.password ?? env.MESH_QBITTORRENT_PASSWORD;
+    const password = cfg.password ?? readSecret(env.MESH_QBITTORRENT_PASSWORD_FILE) ?? env.MESH_QBITTORRENT_PASSWORD;
     if (!url || !password) {
       throw new Error("qBittorrent not configured — set MESH_QBITTORRENT_URL and MESH_QBITTORRENT_PASSWORD");
     }

modules/qbittorrent/module.json

@@ -10,7 +10,8 @@
   ],
   "consumes": [],
   "own-secrets": {
-    "broker": "/var/lib/mesh/qbittorrent/broker"
+    "broker": "/var/lib/mesh/qbittorrent/broker",
+    "password": "/var/lib/mesh/qbittorrent/password"
   },
   "listens": [
     {
@@ -74,12 +75,14 @@
       "network": "host",
       "volumes": [
         "/var/lib/mesh/qbittorrent/broker:/run/secrets/broker:ro",
+        "/var/lib/mesh/qbittorrent/password:/run/secrets/password:ro",
         "/var/lib/mesh/qbittorrent/config.json:/run/config/config.json:ro",
         "/services/qbittorrent/config:/var/lib/qbittorrent/config:ro"
       ],
       "env": {
         "MESH_BROKER_FILE": "/run/secrets/broker",
         "MESH_QBITTORRENT_URL": "http://127.0.0.1:8080",
+        "MESH_QBITTORRENT_PASSWORD_FILE": "/run/secrets/password",
         "MESH_QBITTORRENT_CONFIG_FILE": "/run/config/config.json",
         "MESH_QBITTORRENT_CONFIG_DIR": "/var/lib/qbittorrent/config"
       },