The streaming model holds back the last fraction of a second until more audio
or a pause arrives, and the commit alone did not flush it, so a Stop
mid-sentence lost its final words. The engine now sends 1.2 s of silence before
the commit, and keeps reading after the commit until the final text or 6 s of
quiet. Measured: a stream cut at 6 s of the test clip now ends "...ask not what
your" instead of "...ask not".
On a loaded server the last words can land seconds after Stop, and the widget
read "Stop" until they did. Stop now releases the mic and returns to idle at
once while the session's socket stays open for the tail. Each engine session
sends its events to its own reader, so a session still draining never writes
into the next one, and Record again simply lets go of the old tail.
With RUDDER_AUDIO=browser the engine records no local microphone. The page
captures the reader's mic, converts it to 16 kHz mono PCM in an AudioWorklet,
and streams it over a WebSocket at /api/rudder/stream into the same speech
session a local recorder feeds. The words come back on that socket to that
reader only, never on the shared event stream. One session at a time; a second
reader is told the engine is busy. The engine honours RUDDER_HOME, accepts the
public host named in RUDDER_ALLOW_HOST, and refuses a socket from another
origin. The dev proxy now carries WebSockets to backends.
deployment/cloud: PocketBase (pinned, sha256-checked) as dev (/pb/, signed in; its /_/ dashboard for
OIDC_ADMIN_GROUPS only) and prod (/api-prod/api/ public, dashboard never exposed), with the schema
as migrations in backend/pocketbase/pb_migrations and data on the /data volume; superuser from env.
admin.mjs routes /cdn/, /api-prod/, /pb/ and /admin/ behind oauth2-proxy (public: /cdn/ and
/api-prod/api/ only). build-cdn.sh: flock (409 on a second build), a snapshot of the pulled commit,
the public exclusions applied BEFORE the build, a heap-capped build, a check of the output that
REFUSES the swap if anything excluded remains (proved with planted fixtures: a field-access file,
'Visa Requirements' content, and key-cities one level down each fail; clean passes), then an atomic
swap; runtime-config.js carries the public API URL. public-exclusions.txt is the ONE list the
giveaway export and the CDN build share. Any git host via REPO_URL/BRANCH/GIT_TOKEN.
Rudder is the first plugin that isn't a map: it shows that one plugin-designs/ folder, developed live
in the Plugin Studio, can ship as a desktop app with its own local backend.
- plugin-designs/rudder-voice: <rudder-voice> element. Words stream into the end of a text area while
you type/paste anywhere (typing holds the stream; nothing duplicated or lost). Mic picker with
hot-plug, 3-second mic test, plain-language errors, info panel, privacy-safe debug report.
meta.json declares "targets": ["desktop"].
- backend/rudder-engine (Go): supervises NVIDIA NeMo-Speech.cpp (ggml, CPU) with the Nemotron 3.5 ASR
Streaming GGUF over a loopback WebSocket; records with parec/pw-record only while recording; recovers
dead Bluetooth mic links (reopen -> CVSD voice profile -> optional RUDDER_BT_RESET) and starts
headsets on CVSD. No telemetry: traced with strace, zero sockets/DNS while transcribing.
- Privacy: log lines redact MAC addresses and the home folder, transcripts are never logged, Host check
against DNS rebinding, CORS only for the desktop webview, random API key for the speech server.
- internal/backend-dev-plugin.mjs + vite.config.js: `bun run dev` starts built plugin backends and
proxies /api/<name> same-origin, so a plugin calls the same API in the studio and on desktop.
- backend/rudder-engine/setup-runtime.sh: fetches the runtime and model pinned by SHA-256.
Not yet: the Tauri desktop build (sidecar) and the PocketBase word-correction table.
