Merge pull request 'fix(voice-limit-guard): two simultaneous joins can no longer both pass a full room (#25)' (#33) from fix/voice-limit-race into main

chat.lotusguild.org's config.json has never had featuredCommunities, so
Explore → Featured was empty on the web while the desktop app showed the
Lotus Guild space, Homelab, Jellyfin and matrixrooms.info. Add the same
set (decided 2026-10-04).

Fixes #20

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017PCb59uY3UKqDqt7B6hzd5

README.md

@@ -67,7 +67,7 @@ matrix/
 - coturn config: `/etc/turnserver.conf`
 - LiveKit config: `/etc/livekit/config.yaml`
 - LiveKit service: `livekit-server.service`
-- lk-jwt-service: `lk-jwt-service.service` (now binds `:8071` via drop-in `/etc/systemd/system/lk-jwt-service.service.d/override.conf`; serves JWT tokens for MatrixRTC at `/sfu/get` and legacy `/get_token`)
+- lk-jwt-service: `lk-jwt-service.service` (now binds `127.0.0.1:8071` via drop-in `/etc/systemd/system/lk-jwt-service.service.d/override.conf`; serves JWT tokens for MatrixRTC at `/sfu/get` and legacy `/get_token`)
 - voice-limit-guard: `voice-limit-guard.service` (binds `:8070`, fronts lk-jwt-service — enforces hard per-room voice participant limits **and publish permissions (screenshare/camera via JWT re-signing)** for ALL clients; script `/opt/voice-limit-guard/voice-limit-guard.py`) — see [Voice Channel Limits & Call Permissions](#voice-channel-limits--call-permissions)
 - Hookshot: `/opt/hookshot/`, service: `matrix-hookshot.service`
 - Hookshot config: `/opt/hookshot/config.yml`
@@ -238,7 +238,9 @@ install -D -m644 /opt/matrix-config/livekit/voice-limit-guard.py /opt/voice-limi
 install -m644 /opt/matrix-config/systemd/voice-limit-guard.service /etc/systemd/system/voice-limit-guard.service
 # one-time: rebind lk-jwt-service to :8071
 mkdir -p /etc/systemd/system/lk-jwt-service.service.d
-printf '[Service]\nEnvironment=LIVEKIT_JWT_BIND=:8071\n' > /etc/systemd/system/lk-jwt-service.service.d/override.conf
+# Loopback only (matrix #24): the guard runs on this LXC; binding all
+# interfaces let any LAN host mint unguarded tokens straight from :8071.
+printf '[Service]\nEnvironment=LIVEKIT_JWT_BIND=127.0.0.1:8071\n' > /etc/systemd/system/lk-jwt-service.service.d/override.conf
 systemctl daemon-reload && systemctl restart lk-jwt-service && systemctl enable --now voice-limit-guard
 ```
 
@@ -290,7 +292,7 @@ The token in `draupnir/production.yaml` in this repo is **intentionally redacted
 | 7880 | LiveKit HTTP | 0.0.0.0 |
 | 7881 | LiveKit RTC TCP | 0.0.0.0 |
 | 8070 | voice-limit-guard (fronts lk-jwt-service) | 0.0.0.0 |
-| 8071 | lk-jwt-service (behind guard) | 0.0.0.0 |
+| 8071 | lk-jwt-service (behind guard) | 127.0.0.1 (matrix #24; was 0.0.0.0) |
 | 8080 | synapse-admin (nginx) | 0.0.0.0 |
 | 3478 | coturn STUN/TURN | 0.0.0.0 |
 | 5349 | coturn TURNS/TLS | 0.0.0.0 |

cinny/config.json

@@ -8,9 +8,16 @@
   "allowCustomHomeservers": false,
   "featuredCommunities": {
     "openAsDefault": false,
-    "spaces": [],
-    "rooms": [],
-    "servers": []
+    "spaces": [
+      "!-1ZBnAH-JiCOV8MGSKN77zDGTuI3pgSdy8Unu_DrDyc",
+      "#homelab:codestorm.net"
+    ],
+    "rooms": [
+      "#jellyfin:matrix.org"
+    ],
+    "servers": [
+      "matrixrooms.info"
+    ]
   },
   "hashRouter": {
     "enabled": false,

cinny/lotus_deploy.sh

@@ -160,7 +160,13 @@ echo "[$(date '+%Y-%m-%d %H:%M:%S')] Deploying to $WEBROOT..."
 # /var/www/html/config.json by lxc106-cinny.sh. The build ships a DEV default
 # (allowCustomHomeservers:true); rsyncing it would clobber the production config
 # on every deploy. Keep the app bundle and the runtime config separate.
-rsync -a --delete --exclude config.json dist/ "$WEBROOT/"
+# [matrix #23] Keep the previous builds' hashed assets for a while: a browser
+# still holding an older index.html (or service-worker precache) asks for its
+# assets/index-<old hash>.js, and deleting them on every deploy broke the app
+# for those users until their cached shell expired. Prune after 14 days.
+rsync -a --delete --exclude config.json --exclude assets/ dist/ "$WEBROOT/"
+rsync -a dist/assets/ "$WEBROOT/assets/"
+find "$WEBROOT/assets" -type f -mtime +14 -delete
 
 echo "[$(date '+%Y-%m-%d %H:%M:%S')] ===== Deploy complete ($VITE_APP_VERSION) ====="
 

cinny/nginx-security-headers.conf

@@ -12,4 +12,4 @@ add_header X-XSS-Protection "1; mode=block" always;
 add_header Referrer-Policy strict-origin-when-cross-origin always;
 add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload" always;
 add_header Permissions-Policy 'accelerometer=(), autoplay=(self "https://call.chat.lotusguild.org"), camera=(self "https://call.chat.lotusguild.org"), display-capture=(self "https://call.chat.lotusguild.org"), encrypted-media=(self), fullscreen=(self), geolocation=(self), gyroscope=(), magnetometer=(), microphone=(self "https://call.chat.lotusguild.org"), midi=(), payment=(), usb=()' always;
-add_header Content-Security-Policy "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval' blob:; style-src 'self' 'unsafe-inline'; img-src 'self' data: blob: https://matrix.lotusguild.org https://matrix.org https://*.matrix.org https://mozilla.org https://mozilla.modular.im https://drive.lotusguild.org https://media.giphy.com https://media0.giphy.com https://media1.giphy.com https://media2.giphy.com https://media3.giphy.com https://media4.giphy.com https://www.openstreetmap.org https://tile.openstreetmap.org; font-src 'self' data:; connect-src 'self' https://matrix.lotusguild.org wss://matrix.lotusguild.org https://isitup.lotusguild.org https://matrix.org https://*.matrix.org https://mozilla.org https://mozilla.modular.im https://chat.mozilla.org https://vector.im https://api.giphy.com https://*.giphy.com wss:; media-src 'self' https: blob:; frame-src 'self' https:; worker-src 'self' blob:; object-src 'none'; frame-ancestors 'none'; base-uri 'self'; form-action 'self';" always;
+add_header Content-Security-Policy "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval' blob:; style-src 'self' 'unsafe-inline'; img-src 'self' data: blob: https://matrix.lotusguild.org https://matrix.org https://*.matrix.org https://mozilla.org https://mozilla.modular.im https://drive.lotusguild.org https://media.giphy.com https://media0.giphy.com https://media1.giphy.com https://media2.giphy.com https://media3.giphy.com https://media4.giphy.com https://www.openstreetmap.org https://tile.openstreetmap.org; font-src 'self' data:; connect-src 'self' https://matrix.lotusguild.org wss://matrix.lotusguild.org https://isitup.lotusguild.org https://matrix.org https://*.matrix.org https://mozilla.org https://mozilla.modular.im https://chat.mozilla.org https://www.mozilla.org https://vector.im https://api.giphy.com https://*.giphy.com https://www.tiktok.com wss:; media-src 'self' https: blob:; frame-src 'self' https:; worker-src 'self' blob:; object-src 'none'; frame-ancestors 'none'; base-uri 'self'; form-action 'self';" always;

cinny/nginx.conf

@@ -1,3 +1,12 @@
+# [matrix #23] SPA routes (/, /home/…, /login/…) are rewritten to /index.html
+# inside `location /`, where no cache headers were set: browsers then reused a
+# heuristically fresh shell after a deploy and requested deleted assets. Only
+# the rewritten shell gets no-cache; other files there keep their defaults.
+map $uri $lotus_shell_cache_control {
+    /index.html "no-cache, no-store, must-revalidate";
+    default     "";
+}
+
 server {
     listen 80;
     listen [::]:80;
@@ -99,6 +108,9 @@ server {
     }
 
     location / {
+        # add_header here drops the server-level headers, so include them again.
+        include snippets/cinny-security-headers.conf;
+        add_header Cache-Control $lotus_shell_cache_control always;
         rewrite ^/config\.json$          /config.json break;
         rewrite ^/manifest\.json$        /manifest.json break;
         rewrite ^/sw\.js$                /sw.js break;