docs(p0): compact MVP spec for Android Oboe focus
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Edison Jwa
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# CHANORA_CFG_Decision_Impact_Assessment_v0.9.2.2.1
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**Document type:** Configuration / Decision Impact Assessment
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**Version:** 0.9.2
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**Status:** Baseline Candidate
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**Language:** English
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**Product:** Chanora
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**Repo path:** `docs/governance/decision-impact-assessment.md` ---
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## 1. Purpose
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This document records how key unresolved product and architecture decisions affect requirements, architecture, detailed design, verification, release readiness, security, privacy, and legal work products.
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## 2. High-Impact Decision Assessment
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| Decision | Recommended decision | Impact if changed later |
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|---|---|---|
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| Minimum iOS version | iOS 13 | Test matrix, platform support policy, app store build configuration, platform behavior tests. |
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| Minimum Android version | API 28 (per DEC-004, Accepted 2026-05-14; raised from the original API 24 recommendation) | Device support, permissions, audio routing, Google Play compatibility, platform tests. |
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| Android target SDK | Google Play-required API level on upload date; current release gate uses API 35+ unless newer policy applies |
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| Apple App Store SDK gate | Xcode 26+ with iOS 26 / iPadOS 26 SDK+ for App Store Connect upload on or after 2026-04-28 unless newer Apple upload policy applies | Google Play submission eligibility and platform permission behavior. |
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| Multiple active connections | Exclude from MVP | If added later, affects state model, audio routing, UI layout, reconnection logic, storage, verification. |
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| AEC/AGC/NS/HPF defaults | Enabled by default where supported | Affects UX, CPU, platform-specific audio settings, verification matrix. |
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| Audio processing path | Platform-native first; fallback later | Affects audio architecture, Rust/native dependencies, latency, CPU, platform compatibility. |
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| Trademark/legal review | Required before public/store release | Blocks public release if unresolved. |
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| Local DB | SQLite or equivalent | Affects storage schema, migrations, backup/delete policy, tests. |
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| Bridge | Stable typed generated/schema-controlled bridge | Affects API stability, async event flow, maintainability, code generation, tests. |
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| Diagnostics upload | No automatic upload in MVP | Affects privacy policy, security review, support process. |
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| Crash reporting | Disabled unless later approved | Affects privacy/legal docs, dependency and supply-chain review. |
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## 3. Document Update Rules
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| If decision changes | Update required |
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|---|---|
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| Minimum iOS/Android version changes | SysRS, SysDes, SRS, SAD, SDD, SYS.4, SWE.6, Release Readiness |
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| Apple SDK submission gate changes | SysRS, SysDes, SRS, SAD, SDD, SWE.6, Release Readiness |
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| Android target SDK changes | SRS, SWE.6, Release Readiness, Platform Guide |
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| Multiple connections added to MVP | SysRS, SysDes, SRS, SAD, SDD, SWE.4, SWE.5, SWE.6, SYS.4 |
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| Audio defaults change | SysRS, SysDes, SRS, SAD, SDD, SWE.4, SWE.5, SWE.6 |
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| Audio implementation path changes | SysDes, SAD, SDD, SWE.4, SWE.5, SYS.4 |
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| Legal/trademark policy changes | Release Readiness, Legal Review, Privacy Policy, External References |
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| DB choice changes | SysDes, SRS, SAD, SDD, SWE.4, SWE.5 |
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| Bridge choice changes | SysDes, SAD, SDD, SWE.4, SWE.5 |
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| Diagnostics upload enabled | SysRS, SysDes, SRS, SAD, SDD, Threat Model, Privacy Policy, Redaction Audit, Release Readiness |
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| Crash reporting enabled | SysRS, SysDes, SRS, SAD, SDD, Privacy Policy, Dependency Report, Release Readiness |
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## 4. Recommended Decision Closure Sequence
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1. Confirm release type and staged platform policy.
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2. Confirm mobile minimum versions and Android target SDK policy.
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3. Confirm one active server connection for MVP.
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4. Confirm audio processing defaults.
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5. Confirm audio implementation path.
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6. Confirm diagnostics/crash reporting privacy policy.
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7. Confirm SQLite/equivalent local database.
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8. Confirm bridge choice.
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9. Confirm legal/trademark/public wording review requirement.
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10. Confirm license model before public release.
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## 5. Change History
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| Version | Date | Description |
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|---|---|---|
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| 0.9.0 | 2026-05-14 | Initial decision impact assessment for key product and architecture decisions. |
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## Baseline Candidate 0.9.1 Update
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| Version | Date | Description |
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|---|---|---|
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| 0.9.1 | 2026-05-14 | Updated baseline after product decision closure: Apple App Store SDK gate uses Xcode 26+ and iOS 26 / iPadOS 26 SDK+ for App Store Connect upload on or after 2026-04-28, platform baselines and decision traceability propagated across the document set. |
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## Baseline Candidate 0.9.2 Update
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| Version | Date | Description |
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|---|---|---|
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| 0.9.2 | 2026-05-14 | Corrected Apple App Store Connect upload gate to 2026-04-28 and checked full-package naming, references, and coverage. |
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## Desktop Push-to-Talk Decision Impact Addendum (Baseline Candidate 0.9.3)
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The owner rulings recorded as DEC-023 through DEC-028 on 2026-05-15 affect the documents below. If any of those decisions are revisited the documents listed must be re-validated for consistency.
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| Decision | Affects |
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|---|---|
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| DEC-023 Windows Global PTT P0 | `docs/architecture/desktop-ptt-architecture.md`, `docs/architecture/sad.md` SAD-072, `docs/architecture/sdd.md` SDD-083/084, `docs/requirements/srs.md` SRS-197, `docs/release/release-readiness-go-nogo-record.md` RR-PTT-001 |
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| DEC-024 macOS Global PTT P0 + permission UX | `docs/architecture/desktop-ptt-architecture.md`, `docs/architecture/sad.md` SAD-073, `docs/architecture/sdd.md` SDD-085, `docs/requirements/srs.md` SRS-198, `docs/release/release-readiness-go-nogo-record.md` RR-PTT-002/003 |
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| DEC-025 Linux GNOME-Wayland only | `docs/architecture/desktop-ptt-architecture.md`, `docs/architecture/sad.md` SAD-074, `docs/architecture/sdd.md` SDD-086, `docs/requirements/srs.md` SRS-199, `docs/release/platform-release-policy.md`, `docs/release/release-readiness-go-nogo-record.md` RR-PTT-004/005 |
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| DEC-026 Mouse side buttons | `docs/architecture/desktop-ptt-architecture.md`, `docs/requirements/srs.md` SRS-200, `docs/architecture/sad.md` SAD-072/073, `docs/architecture/sdd.md` SDD-083/085 |
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| DEC-027 PTT diagnostics privacy | `docs/privacy/privacy-policy.md`, `docs/security/diagnostic-redaction-audit-report.md`, `docs/security/threat-model.md`, `docs/requirements/srs.md` SRS-202, `docs/architecture/sad.md` SAD-077, `docs/architecture/sdd.md` SDD-090 |
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| DEC-028 Missed-key-up watchdog P0 | `docs/architecture/desktop-ptt-architecture.md`, `docs/requirements/srs.md` SRS-203, `docs/architecture/sad.md` SAD-079, `docs/architecture/sdd.md` SDD-092, `docs/release/release-readiness-go-nogo-record.md` RR-PTT-007 |
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| Version | Date | Description |
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|---|---|---|
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| 0.9.3 | 2026-05-15 | Recorded the desktop-PTT decision impacts for DEC-023..028. |
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## Baseline Candidate 0.9.9 Update
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| Version | Date | Description |
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| 0.9.9 | 2026-05-17 | Updated §2 "Minimum Android version" row from API 24 to **API 28** to reconcile with DEC-004 (Accepted 2026-05-14). Document Update Rules (§3) and Decision Closure Sequence (§4) remain valid as-is. |
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