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docs(governance): promote audio PoC to PASS; close mobile-Android half

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Documentation update following the Android audio spike pass.

Decision register (v0.9.3 → v0.9.4):
  - DEC-011.1 promoted from
      'Accepted (desktop: cpal) / Deferred (mobile)'
    to
      'Accepted (desktop: cpal; Android: cpal-on-Oboe) / Deferred (iOS)'.
  - Evidence pointer added: poc/audio-capture-playback-android-spike/
    VERIFICATION.md.

PoC plan (v0.2.0 → v0.3.0):
  - Audio row promoted from PARTIAL PASS to PASS.
  - All six PoC plan entries are now PASS.

PoC results summary (v0.1.0 → v0.2.0):
  - Audio row collapsed into one PASS spanning both spikes.
  - RISK-PoC-001 narrowed from 'mobile audio' to 'iOS audio only'.
  - Toolchain table expanded with Android NDK, cargo-ndk, AGP/
    Gradle/Kotlin, jni/ndk-context/android_logger, and the test
    device.

Cross-spike pointers updated:
  - poc/audio-capture-playback-spike/VERIFICATION.md result and
    follow-up sections updated to reference the Android spike.
  - poc/README.md status table lists both audio spike directories.

CHANGELOG updated under [Unreleased].
This commit is contained in:
EdisonJwa
2026-05-14 18:25:03 +08:00
parent ec21a880d2
commit 4c64517e45
6 changed files with 72 additions and 27 deletions
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CHANGELOG.md
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@@ -32,13 +32,35 @@ This project is expected to follow a Conventional Commits style workflow.
redaction. Audit cases REDACT-TC-001..010 verified on 2026-05-13.
- `poc/audio-capture-playback-spike/` — PoC proving platform audio
capture/playback via cpal. Desktop half (Linux + PipeWire)
empirically verified end-to-end on 2026-05-13; mobile half
(Android Oboe / iOS AVAudioEngine) documented as an open gap.
empirically verified end-to-end on 2026-05-13; mobile half closed
separately by `poc/audio-capture-playback-android-spike`.
- `poc/audio-capture-playback-android-spike/` — PoC closing the
mobile half of the audio capture/playback PoC plan entry. Rust
cdylib + JNI + Kotlin Android app; cpal targets Android's Oboe
backend (AAudio). Verified end-to-end on a physical Motorola
Moto G Stylus 5G (2023) running Android 14 arm64-v8a on
2026-05-13: 500 ms 440 Hz sine wave driven out the device speaker
(22,050 frames at 44.1 kHz) and 1 s captured from the microphone
into a valid 85,292-byte RIFF/WAVE mono 16-bit PCM file pulled via
`adb exec-out run-as`.
- `poc/README.md` summarising PoC status against
`docs/architecture/proof-of-concept-plan.md`.
### Changed
- `docs/architecture/proof-of-concept-plan.md` bumped to v0.3.0 to
promote the audio PoC from PARTIAL PASS to PASS after the Android
mobile half was closed; all six PoC plan entries are now PASS.
- `docs/governance/product-decision-register.md` bumped to v0.9.4 to
promote DEC-011.1 mobile half from Deferred to Accepted (Android),
keeping iOS Deferred.
- `docs/governance/poc-results-summary.md` bumped to v0.2.0:
audio row promoted to PASS, RISK-PoC-001 narrowed from "mobile
audio" to "iOS audio only", Android toolchain added to the
toolchain table.
- `poc/audio-capture-playback-spike/VERIFICATION.md` updated to point
at the Android spike for the mobile half.
- `poc/README.md` updated to list both audio spike directories.
- `docs/architecture/proof-of-concept-plan.md` bumped to v0.2.0 to
record PoC outcomes (5 PASS, 1 PARTIAL) and add a Status column.
- `docs/security/secure-storage-audit-report.md` bumped to v0.9.3: