[DO NOT MERGE] speech addons: e2e validation of the qvac-ext-lib-whisper.cpp repo reorg

[ogad-tether]

What

Validation-only branch — do not merge. Overlays the tts-cpp, parakeet-cpp, and whisper-cpp ports onto the reorged qvac-ext-lib-whisper.cpp tree (QIP tetherto/qvac-ext-lib-whisper.cpp#94, PR stack #93/#95/#96/#97, pinned @ d2b39049):

port	old source path	new source path
tts-cpp	tts-cpp/	engines/tts/
parakeet-cpp	parakeet-cpp/	engines/parakeet/
whisper-cpp	repo root	third_party/whisper.cpp/ (registry GNUInstallDirs patch dropped — absorbed into the subtree's declared delta)

Purpose: run the three speech addons' on-pr desktop pipelines from source against the reorged layout. Mobile e2e dispatched separately on this branch (integration-mobile-test-{tts-ggml, transcription-parakeet, transcription-whispercpp}).

When the reorg PRs merge, the real registry pin bump will carry these same path updates; this branch then closes unmerged.

🤖 Generated with Claude Code

[github-actions]

Review Status

Current Status: ❌ PENDING
Approvals so far: none

Pending reviews: Needs 1 Management or Team Lead, and 1 more from Management, Team Lead, or Member.

[ogad-tether]

E2E validation results (reorged tree @ d2b39049)

addon	mobile e2e (Device Farm)	prebuilds	desktop integration
tts-ggml	✅ pass	✅ all targets	✅ 7/7 platforms (incl. linux-arm64)
transcription-parakeet	✅ pass	✅ 9/9 targets (android/ios/linux-arm64/…)	⚠️ all platforms fail in a JS test-teardown bug unrelated to this branch: delete process.env.QVAC_TEST_GGUF_SORTFORMERSTREAMING throws under the env proxy (test added 2026-07-13, PR #3231; desktop suites are label-gated so it hadn't run since). Native tests before the teardown all pass.
transcription-whispercpp	✅ pass	✅ all targets	✅ 6/7; linux-arm64 fails at runtime with GGML_ASSERT(device) in ggml-speech backend loading — matches the known linux-arm64 CPU-variants issue (armv8-a baseline / DL modules / BACKENDS_SUBDIR; fix tracked separately), not a path/layout effect: same binary passes linux-arm64 prebuild and android-arm64 on-device

Conclusion: no failure attributable to the repo reorg. The overlay ports prove the registry pin-bump path updates (engines/tts, engines/parakeet, third_party/whisper.cpp, whisper GNUInstallDirs patch absorbed into the subtree delta).

This PR stays DO-NOT-MERGE; it closes when the real registry pin bump lands after tetherto/qvac-ext-lib-whisper.cpp#95/#96/#97 merge.

🤖 Generated with Claude Code

[ogad-tether]

Update on the whisper linux-arm64 integration failure: discriminated via probe #3321 — the identical GGML_ASSERT(device) failure reproduces on a source build of unmodified main (run), while main's published 0.12.0 prebuilds pass the same job (run). Conclusion: a pre-existing regression in current source-build inputs (not this branch, not the repo reorg); tracked separately. All findings on this PR now have a verified non-reorg cause.

[github-actions]

License compliance — clean

No new dependency license findings in this PR.

Warn-only (shadow) mode — this check does not block merges yet.

Updated automatically by the canonical license compliance workflow.

NOTICE presence (advisory)

Missing NOTICE (advisory, does not block):

• ./packages/embed-llamacpp/benchmarks/server
• ./packages/embed-llamacpp/benchmarks/performance
• ./packages/ggml-coload-smoke
• ./packages/llm-llamacpp/benchmarks/server
• ./packages/llm-llamacpp/benchmarks/performance
• ./packages/fabric/test/integration
• ./packages/transcription-whispercpp/benchmarks/server
• ./packages/transcription-parakeet/benchmarks/server
• ./packages/sdk/e2e
• ./packages/vla-ggml/sim/server
• ./.github/actions/release-merge-guard
• ./docs/website

[github-actions]

QVAC E2E — android — ✅ all tests passed (91/103, 1603s)

Config: suite=smoke · filter=(none) · exclude=(none)
Device pool: Samsung S26 Ultra - Android 16 — ☀️ highly available
View run · Artifacts: reports · Device Farm logs

[ogad-tether]

Revalidation @ pin 4dd6b2e8 (post qvac-ext-lib-whisper.cpp#96-review restorations)

addon	mobile e2e (Device Farm)	desktop integration
tts-ggml	✅	✅ 7/7 platforms
transcription-whispercpp	✅	✅ 6/7 — linux-arm64 still the verified main source-build regression (unchanged)
transcription-parakeet	✅	native stages ✅ (all prebuild targets); suites still aborted by the pre-existing JS teardown bug from #3231 (unchanged)

Identical carve-outs to the first pass, both with independent non-reorg proof; everything else green on the exact trees the stack merges.

🤖 Generated with Claude Code