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feat(tts): stream Google audio natively and add a voices command - #1746
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📝 WalkthroughWalkthroughThe changes add SDK and CLI support for listing TTS voices. They also add native Google TTS streaming for supported voices and formats, with documentation and tests for voice discovery and synthesis. ChangesTTS voice discovery
Google native TTS streaming
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~45 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant Caller as TTS caller
participant Handler as GoogleTTSHandler
participant API as Google streaming synthesis API
Caller->>Handler: Request synthesis with text and options
Handler->>API: Send streaming configuration and text
API-->>Handler: Return audio chunks
Handler-->>Caller: Yield audio chunks
Merge Risk: 🔵 Low · up to Voice discovery and native Google streaming look sound. One narrow edge case remains: if an application pauses for more than 30 seconds between reading streamed audio chunks, the Google stream is closed and reported as a network stall. The fix is small and can be made before or shortly after merge. 🚥 Pre-merge checks | ✅ 3 | ❌ 2❌ Failed checks (2 warnings)
✅ Passed checks (3 passed)
Full details: Linked Issues checkExplanation The PR implements the main objectives for Resolution For Full details: Out of Scope Changes checkExplanation The CLI, TTS processor, Google handler, documentation, and tests for OpenAI, Google, and Azure support the linked objectives. The changes to Fish Audio and Cartesia missing-audio classification, and the live synthesis coverage for ElevenLabs and Cartesia, do not connect to the directly linked requirements. The linked parent and ✨ Finishing Touches 💡 1📝 Generate docstrings
🧪 Generate unit tests (beta)
🛠️ Fix failing CI checks 💡
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Yama PR Review can exit 0 without posting anything at all — seen on #1746, where Yama's own GitHub client read the repo slug as `juspay/juspay`, got 404s on every call, and silently treated the empty result as "nothing to report" (#1754). Add a guard step that re-reads the PR through the job's own GITHUB_TOKEN, independent of Yama's internal client, and fails the job if no review with a verdict and a summary body landed since the run started. This closes the observable half of #1754 (a silent no-op can no longer pass as green) but not the root cause, which lives inside @juspay/yama's own GitHub client construction.
Yama PR Review can exit 0 without posting anything at all — seen on #1746, where Yama's own GitHub client read the repo slug as `juspay/juspay`, got 404s on every call, and silently treated the empty result as "nothing to report" (#1754). Add a guard step that re-reads the PR through the job's own GITHUB_TOKEN, independent of Yama's internal client, and fails the job if no review with a verdict and a summary body landed since the run started. This closes the observable half of #1754 (a silent no-op can no longer pass as green) but not the root cause, which lives inside @juspay/yama's own GitHub client construction.
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- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
In `@src/lib/adapters/tts/googleTTSHandler.ts`:
- Around line 530-546: Update the streaming loop in GoogleTTSHandler so the idle
timeout measures only time waiting for a response, not time the generator is
suspended at yield. Clear the idle timer when handling each response, then
re-arm it before continuing after an undefined payload and after the consumer
resumes from yielding audio.
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⛔ Files ignored due to path filters (20)
docs/api/README.mdis excluded by!docs/api/**docs/api/classes/GoogleTTSHandler.mdis excluded by!docs/api/**docs/api/classes/TTSError.mdis excluded by!docs/api/**docs/api/classes/TTSProcessor.mdis excluded by!docs/api/**docs/api/functions/isTTSResult.mdis excluded by!docs/api/**docs/api/functions/isValidTTSOptions.mdis excluded by!docs/api/**docs/api/type-aliases/CartesiaMessage.mdis excluded by!docs/api/**docs/api/type-aliases/CliAgentCommandArgs.mdis excluded by!docs/api/**docs/api/type-aliases/CliAudioPlayerCommand.mdis excluded by!docs/api/**docs/api/type-aliases/CliNetworkCommandArgs.mdis excluded by!docs/api/**docs/api/type-aliases/CliValidatedFileOption.mdis excluded by!docs/api/**docs/api/type-aliases/CliVoicesCommandArgs.mdis excluded by!docs/api/**docs/api/type-aliases/GoogleStreamingAudioEncoding.mdis excluded by!docs/api/**docs/api/type-aliases/ProxyExposeArgs.mdis excluded by!docs/api/**docs/api/type-aliases/ProxyGateProbe.mdis excluded by!docs/api/**docs/api/type-aliases/ProxyShareArgs.mdis excluded by!docs/api/**docs/api/type-aliases/ProxyShareCliAction.mdis excluded by!docs/api/**docs/api/type-aliases/ProxySharePresetName.mdis excluded by!docs/api/**docs/api/type-aliases/TTSChunk.mdis excluded by!docs/api/**docs/api/variables/TTS_ERROR_CODES.mdis excluded by!docs/api/**
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docs/features/tts.mdsrc/cli/commands/voices.tssrc/cli/parser.tssrc/lib/adapters/tts/googleTTSHandler.tssrc/lib/types/cli.tssrc/lib/types/tts.tssrc/lib/utils/ttsProcessor.tstest/continuous-test-suite-tts.ts
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Overall this is a careful, well-engineered PR: the native-streaming path in googleTTSHandler.ts correctly recomputes finality in readNativeSegment, scopes streamability narrowly (voices/formats/SSML), and TTSProcessor cleanly rejects unsupported providers. Two things keep this from merge as-is.
APPROVEReviewed the full diff across Findings — all resolved
Non-blocking observations
Checked clean
Suggested handlingNone required. The streaming idle-timer/backpressure interaction and the Author note, folded here to keep a single summary: "Thanks for the thorough updates; this one reads clean." |
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Superseded pointer — the full review lives in the single canonical summary comment above (#5807870254). This comment is de-duplicated: it no longer carries the |
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Superseded pointer. This thread previously duplicated the recurring-review outcome. The single canonical summary lives at #5807870254 (marker |
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Recurring review — no new blockersThis is a re-review of PR #1746 now flattened into a single squash commit
No new findings surfaced on the squashed aggregate: types are consolidated under |
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Pre-merge gate — five confirmed findings, all resolved with real code changes and regression tests.
All fixes are re-verified on the new commit; see the PR body's "Pre-merge gate" section for full test evidence and counts. |
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Recurring review of current head Re-reviewed the flattened head against the full history. Both previously-threaded findings are already resolved and were accepted in the canonical summary #5807870254 and the earlier recurring summary #5843984267 — nothing to re-open there. F1–F3 (posted by the author as the pre-merge gate in #5847948760) — verified present in the committed code and covered by dedicated regression tests:
The idle-timer reload (clear-on-response, re-arm only after the consumer resumes) also matches the previously agreed shape and is documented in the func comment. New findings: none. The head is clean, the F1–F3 fixes are real (not just described), and they are pinned by deterministic tests under the documented rule-15 exception. No changes requested. Merge is cleared from this review's side. |
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APPROVE — re-affirmed on the current head 2dad3590. Both previously-flagged findings (Google streaming idle-timer race in googleTTSHandler.ts and getVoices error-shaping in ttsProcessor.ts) are resolved in the committed code with test-first regression coverage and RED/GREEN evidence. The pre-merge gate's F1–F3 fixes (.cancel() not .destroy(), the getClient() cancellation race, and the pcm16 actionable-error path) were verified present and pinned by deterministic tests. No blockers. Details in the summary comment (#5807870254) and the recurring review (#5848544794).
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Validation complete — review state reconciled. Review state (matches APPROVE verdict)The reviewer verdict is APPROVE, now reflected as an approving review on the PR:
The latest review from this reviewer on the current head is APPROVED, which is what GitHub counts. The Sept 24 Note: Comment inventory (verified clean)
All landed comments carry their markers and are well-formed. No malformed block needed fixing, no duplicate finding was posted twice. Author/reviewer repliesNo outstanding question requires a reply: the author's pre-merge gate ( PR carries one clean, complete review: one summary, two resolved findings, no duplicates, and an approving review on the current head matching the APPROVE verdict. |
Two gaps in the TTS surface, both reachable only from the public API.
Google synthesis always waited for the whole segment. `GoogleTTSHandler`
now implements the optional `TTSHandler.synthesizeStream` seam added for
OpenAI, so `TTSProcessor` prefers provider-native reads and keeps the
buffered path for everything else.
The gate is narrow and measured, not assumed. Against the live API,
streaming accepts only `Chirp3-HD`, `Chirp-HD` and `Journey` voices --
`Neural2` and `Studio` are refused outright -- and only the `PCM` and
`OGG_OPUS` encodings; `MP3` and `LINEAR16` are rejected as unsupported
even though `synthesizeSpeech` takes both. `PCM` delivered 41 reads with
the first at 697ms and the body complete at 6131ms, `OGG_OPUS` 11 reads
with the first at 443ms. The streaming request carries no SSML field, so
`<speak>` input stays buffered rather than being sent as literal text.
Anything outside that set answers `undefined` and is served exactly as
before, which includes the default voice and the default format -- so
native delivery is opt-in and nothing existing changes shape.
The stream is bounded by an idle timeout rather than a total one:
streaming produces audio at roughly playback speed, so a whole-call
bound would fail a long but healthy segment for being long.
Separately, `--tts-voice` took a provider-specific id that nothing
printed. `TTSProcessor.getVoices(provider, { languageCode })` wraps the
optional handler member with typed errors, and `neurolink voices`
renders it as a sorted table or JSON, naming the registered set when a
provider is not among it.
Tests are end-to-end against dist. The discriminator for native delivery
is the chunk count for ONE sentence: the buffered path can only ever
emit one, so more than one is unreachable without the native read -- and
each case first asserts that audio was produced at all, so the count is
never vacuous. The same voice with `mp3` is the negative control and
must yield exactly one. Both were confirmed to report a failure, not a
skip, by breaking them on purpose: 2 failed, exit 1.
Live cases skip cleanly without credentials, and treat a 401/403 as the
environmental condition it is; azure-tts skipped that way on this run.
Review follow-ups (CodeRabbit + Yama), both fixed test-first: the idle
timer in `GoogleTTSHandler.synthesizeStream` re-armed on every server
response, before yielding -- so it measured time spent suspended at its
own `yield` waiting for the consumer, not time spent waiting for the
server, and a consumer slower than 30s to pull the next chunk tore down
a healthy duplex. It now clears on receipt, re-arms immediately on an
empty read, and re-arms only after the consumer resumes it following a
yield. Separately, `TTSProcessor.getVoices()` called a handler's
`getVoices` before checking `isConfigured()` and let a raw provider
error escape unshaped; it now enforces the same `isConfigured()` guard
`synthesize()` does and routes failures through `toSynthesisError()` so
`code`/`retriable`/category survive for callers. Both were reproduced
RED against `GoogleTTSHandler.synthesizeStream()` and `getVoices()`
directly (dist-exported public surfaces, bypassing `TTSProcessor`'s
outer one-chunk lookahead buffer, which otherwise absorbs the idle-timer
failure as a false negative) before the fix, and confirmed GREEN after.
Three more cancellation and format-gate defects in the same streaming
path, all reachable only once the native stream is actually in flight:
the idle timer, the generator's own cleanup, and the out-of-band cancel
hook all tore down the gRPC duplex with `.destroy()`, which only frees
the local Node stream and leaves Google's server-side synthesis (and its
billing) running until the RPC's own ~5-minute deadline elapses on its
own. All three sites now call `.cancel()`, which reaches
`ClientDuplexStreamImpl.cancel()` -> `cancelWithStatus(CANCELLED, ...)`
and actually tells the server to stop -- matching the `controller.abort()`
convention `OpenAITTS` already uses for the same purpose. Separately, a
cancellation arriving while the generator is still parked at
`await handler.getClient()` was silently dropped, because the local
handle it flips a flag on is not assigned until after that await
resolves; the generator now checks the flag immediately on resolution
and returns without opening the duplex at all. And requesting `pcm16`
against a voice or SSML combination that does not qualify for streaming
fell back to the buffered encoder, whose format map had no entry for a
real, supported format and threw a bare "unsupported audio format"
message; it now names the two conditions (a Chirp3-HD/Chirp-HD/Journey
voice, plain non-SSML text) a caller needs for the native path instead.
All three were reproduced RED against `GoogleTTSHandler` directly -- a
fake `gax.CancellableStream` double distinguishing `.cancel()` from
`.destroy()` for the cancellation defects, and `mapFormat` for the
format-gate one -- before their fix, and confirmed GREEN after. All
three are now permanent regression cases in
`test/continuous-test-suite-tts-unit.ts`, which passes 79 of 79 with the
fixes in place.
The live provider-synthesis matrix (#528) is trimmed back to the three
providers `#492`, `#524` and `#528` actually scope this work to --
OpenAI, Google and Azure. ElevenLabs and Cartesia are real providers
elsewhere in this codebase, but adding them to this matrix under an
issue number that does not ask for them was coverage this PR did not
otherwise touch.
Issue #528's Google share of its own literal acceptance list --
`getVoices()` returns 220+ voices -- had no assertion anywhere in the
diff; the live synthesis matrix above exercises google-ai for audio
bytes only, never voice listing, and OpenAI's/Azure's shares of the same
issue still need live credentials this environment does not hold.
`test/continuous-test-suite-tts.ts` gained a case that calls the public
`TTSProcessor.getVoices("google-ai")` against the real API and asserts
the literal 220-voice floor `#528` states, which also catches an
accidental language-code filter reappearing on the unfiltered path. It
was confirmed to fail for the real, reported count when the threshold is
set beyond the true catalog size, and to pass at the literal one.
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Recurring review — re-squash
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APPROVE — TTS native-streaming + voices command are correct, the prior review findings are resolved test-first, and this re-squash is documentation-only.
Re-affirmed against the current head 737c702f (the previous approval was anchored to the now-superseded 2dad3590):
Resolved (accepted, test-first):
- Idle-timer race in
GoogleTTSHandler.synthesizeStream—clearTimeouton each response, re-arm immediately on empty read, re-arm only afteryieldresumes. TTSProcessor.getVoices()missingisConfigured()gate + unshaped handler error — now guarded and routed throughtoSynthesisError().
Re-verified fixed at this head (F1–F3):
.cancel()(not.destroy()) at all three gRPC teardown sites — actually stops Google-side synthesis and its billing.if (cancelled) return;guard afterawait handler.getClient()— closes the dropped-cancel race on first-call dynamic import.pcm16format-gate error inmapFormatnaming the two streaming prerequisites.
Head-to-head 2dad3590 → 737c702f: source and test files are byte-identical (verified per-file add/del counts); the only change is trimming unrelated regenerated docs/api/type-aliases/* pages. No code impact.
Regression coverage: continuous-test-suite-tts-unit.ts (79/79) and the live continuous-test-suite-tts.ts (includes the getVoices() 220-voice floor from #528). Live cases skip cleanly without credentials.
Clean: no secrets leaked; transformParamsForLogging untouched; public SDK API (TTSHandler.synthesizeStream seam) is backward-compatible; no static provider imports (Rule 1); no hardcoded max_tokens. No remaining findings.
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Closes the two genuine gaps in the TTS-EPIC-001 (#448) cluster. The other three issues in the cluster were verified as already shipped — see the audit table below.
What changed
Google native streaming (#492, TTS-013)
GoogleTTSHandlernow implements the optionalTTSHandler.synthesizeStreamseam that #1588 added for OpenAI, soTTSProcessorprefers provider-native reads and keeps the buffered path for everything else. No new abstraction — the same seam, the same global chunk normalization, the same fallback rules.The gate is measured against the live API, not assumed:
Chirp3-HD(en-US, en-GB, de-DE),Chirp-HD,JourneyNeural2,Studio— "only Chirp 3: HD voices are supported for streaming synthesis"PCM,OGG_OPUSMP3,LINEAR16— "Unsupported audio encoding", thoughsynthesizeSpeechtakes bothMeasured delivery:
PCM41 reads, first at 697 ms, body complete at 6131 ms.OGG_OPUS11 reads, first at 443 ms.StreamingSynthesisInputhas no SSML field, so<speak>input stays on the buffered path rather than being sent as literal text. Everything outside the gate answersundefinedand is served exactly as before — including the default voice (en-US-Neural2-C) and the default format (mp3), so native delivery is opt-in and no existing call changes shape.The stream is bounded by an idle timeout rather than a total one. Streaming produces audio at roughly playback speed, so a whole-call bound would fail a long but perfectly healthy segment purely for being long.
Voice discovery (#524, TTS-026)
--tts-voicetook a provider-specific id that nothing in the CLI printed.TTSProcessor.getVoices(provider, { languageCode })— wraps the optional handler member, reporting an unregistered provider and a handler without voice listing as typedTTS_PROVIDER_NOT_SUPPORTEDerrors rather than aTypeErroron an absent member.neurolink voices --provider <p> [--language <code>] [--json]— sorted table or JSON, count at the end, non-zero exit naming the registered set when the provider is not among it.Sorted by codepoint, not
localeCompare: collation depends on the Node ICU build, so the same list would otherwise order differently on CI and a laptop.Tests (#528, TTS-028 — live half)
continuous-test-suite-tts-unit.tsalready covered the no-key half. This adds the live half totest:tts, end-to-end against../dist/index.js.The discriminator for native delivery is the chunk count for one sentence.
TTSProcessorsegments at sentence boundaries and serves each segment from either a native stream or a single bufferedsynthesize(), so one sentence yields exactly one chunk on the buffered path however long it is — more than one is unreachable without the native read.streamingBufferSizeis set above the sentence length so segmentation cannot manufacture the extra chunks.Each case first asserts audio was produced at all, so the count is never vacuous. The same voice with
mp3is the negative control and must yield exactly one.Review follow-ups
Both of this PR's unresolved review threads pointed at real defects, fixed test-first on top of the rebased commit (committed HEAD
75053ddec55c54152b19741d49a757a4cd2d04e2):CodeRabbit r4089952972 (MAJOR/Minor) + Yama MAJOR finding,
src/lib/adapters/tts/googleTTSHandler.ts:530-546— the streaming idle timer re-armed unconditionally on every server response, before yielding to the consumer, so it measured time the generator sat suspended at its ownyieldwaiting for its own caller, not time spent waiting for Google's server. A consumer slower than the 30s idle window to pull the next chunk destroyed a healthy gRPC duplex, and the resulting failure was reported as a retriable network stall — backpressure misattributed as a server problem.Fix: clear the timer on receipt of each response (no re-arm yet); re-arm immediately for an empty read (still genuinely waiting on the server); re-arm only after the consumer resumes the generator following a yield. This is CodeRabbit's own proposed diff.
New regression test
TTS - Google streaming survives a slow consumer (PR#1746)drivesGoogleTTSHandler.synthesizeStream()directly (a legitimate dist-exported public surface — see docstring in the test for whyTTSProcessor.synthesizeStream()'s one-chunk lookahead buffer would silently absorb this exact failure and produce a false-negative pass). It pulls one chunk of a long (306-word) streaming response, pauses consumption for 31s — past the idle window, while Google's server is still genuinely mid-flight — then asserts the next pull still delivers audio instead of the connection having been torn down.RED (against unfixed source):
the stream ended after the paused pull instead of continuing to deliver the response still being produced— FAIL, exit 1.GREEN (after fix):
delivered a further chunk after a 31s consumer pause without the connection being torn down— PASS, exit 0.Yama MINOR finding,
src/lib/utils/ttsProcessor.ts:454(threadPRRT_kwDOOzxF1c6lcVU7) —TTSProcessor.getVoices()called the handler's owngetVoices()before checkingisConfigured()(the guardsynthesize()enforces), and let whatever the handler threw escape verbatim instead of being shaped into aTTSError— breaking the@throws TTSErrorcontract in the method's own JSDoc for provider-borne errors, and leaving a caller keying retry logic offretriablewith an untyped object.Fix:
getVoices()now runs the sameisConfigured()gatesynthesize()runs, before touching the handler, and routes whatever the handler throws throughtoSynthesisError()socode/category/retriablesurvive. (The handler's owngetVoices({ languageCode })options share no fields withsynthesize()'sTTSOptions, so an empty object is forwarded as context rather than an invalid cast.)New regression test
TTS - getVoices gates isConfigured, shapes errors (PR#1746)registers syntheticTTSHandlertest doubles viaTTSProcessor.registerHandler()— one unconfigured, one configured-but-throwing — and asserts both the ordering and the shaping.RED (against unfixed source):
getVoices() called the handler's own getVoices() before checking isConfigured()— FAIL, exit 1.GREEN (after fix):
unconfigured handler gated before the call; raw failure shaped into TTSError— PASS, exit 0.CodeRabbit's review body reported exactly one actionable comment (the idle-timer thread above); no further actionable CodeRabbit review-body items existed beyond it.
Testing evidence
Refreshed onto
releasea7c82e821after #1781, #1794 and #1795 landed: the non-generated diff reproduced byte-identical (patch-idcb22e2f53638),docs/apiwas regenerated, andsearch-index.jsonwas regenerated withpnpm run docs:buildtwice with byte-identical output (sha2564f760ec13d621170…). New head75053ddec. No source or test change.Committed HEAD:
75053ddec55c54152b19741d49a757a4cd2d04e2(one commit ahead oforigin/release, rebased clean —git patch-idunchanged through the rebase).Both review fixes were driven test-first: genuine RED against the unfixed source, then GREEN after the fix, before being folded into the commit above (see per-item RED/GREEN excerpts in "Review follow-ups").
Suite-level proof,
test/continuous-test-suite-tts.tsviapnpm run test:tts, on the committed HEAD — fixed, then the smallest behavioral hunk of the PR's ownsrc/change deliberately reverted, then restored:pnpm run build && pnpm run test:ttsPassed: 25, Skipped: 1, Total: 26, Time: 235.29s— PASS, exit 0pnpm run build && pnpm run test:ttsPassed: 24, Failed: 1, Skipped: 1, Total: 26, Time: 228.44s— FAIL, exit 1git checkout HEAD -- src/)pnpm run build && pnpm run test:ttsPassed: 25, Skipped: 1, Total: 26, Time: 232.06s— PASS, exit 0, matches the fixed runThe break was the exact inverse of the idle-timer fix in
src/lib/adapters/tts/googleTTSHandler.ts(re-arm unconditionally on every response, before yielding, instead of clear-then-conditionally-re-arm):for await (const response of duplex as AsyncIterable<unknown>) { - // Clear rather than re-arm here: ... - clearTimeout(idleTimer); + armIdleTimer(); const data = GoogleTTSHandler.streamedAudio(response); if (data === undefined) { - armIdleTimer(); continue; } cumulativeSize += data.length; yield { data, format, index: index++, isFinal: false, cumulativeSize, voice: voiceId, sampleRate: sampleRateHertz }; - armIdleTimer(); }Broken run's targeted failure — a real
✗ FAIL, not a skip or crash, and scoped to only the targeted test:After restore:
git status --porcelainempty,HEADunchanged at75053ddec55c54152b19741d49a757a4cd2d04e2.pnpm run build(publint clean),pnpm run check(0 errors, 0 warnings) andpnpm run lint(0 errors; only pre-existing warnings in unrelated files) all pass on the committed HEAD — these, plusdocs-apiregeneration,check:tools-testsandcheck:test-parse, are the gatesfinalize-commit.shran before creating this commit.The one skip in every run above is
azure-ttsinside the live-provider-synthesis-matrix test (TTS - live provider synthesis matrix (#528)), for an upstream 401 credential/quota condition in the local env — unrelated to this PR's changes and unchanged across fixed/broken/restored.New cases (from the fixed/restored runs):
Also green on the committed HEAD:
check:deps,check:ci-scripts,check:test-parse,check:tools-tests,test:provider-structure,test:model-manifests,validate,validate:env,validate:security, and thedocs/apicurrency check (regenerated, reproducible).Audit of the rest of the cluster
These were verified as already shipped, under names that do not match the issues. No code was written for them.
OpenAITTSHandler.synthesize()src/lib/voice/providers/OpenAITTS.ts:356, exported at runtime fromdist/index.jsas bothOpenAITTSandOpenAITTSHandler. All six voices at:155-205, speed/model/format at:246-258, latency + metadata at:400. The last open criterion (flac downgrading to mp3) was closed by merged PR #1306, which cites the issue at:553. The planning issue namedsrc/lib/adapters/tts/openaiTTSHandler.ts; PR #619 for that path was closed unmerged.AzureTTSHandler.synthesizeStream()TTSProcessor.synthesizeStream()(src/lib/utils/ttsProcessor.ts:923) already provides for every handler without a native stream, Azure included — sentence-boundary accumulation, onesynthesize()per segment, global sequence indexes, exactly one final chunk. Reachable asNeuroLink.stream({ tts: { provider: "azure-tts", enabled: true } }). Adding the same buffering insideAzureTTSwould be a second parallel implementation of it. Native wire streaming for Azure was not added: the localAZURE_SPEECH_KEYreturns 401, so there is no wire evidence, and #1588 set the precedent that this seam is enabled only on direct measurement.Closes #448
Closes #492
Closes #524
Closes #528
Summary by CodeRabbit
voicescommand to list a text-to-speech provider’s available voices, with optional language filtering and JSON output.