EdisonJwa 50c95b61ad feat(poc/storage): add secure-storage spike (Linux)
Proof-of-concept proving the secure-storage exit criterion from
docs/architecture/proof-of-concept-plan.md §2:
  "Secret write/read/delete works through platform secure storage."

Implements a typed SecretStorageRepository trait per ADR-006
(SecureStore + per-platform adapters) and a Linux adapter (the only
adapter in PoC scope) that supports both equivalent Linux backends
per SysRS-053/SysRS-162: Secret Service (libsecret) and kernel
keyutils.

The audit test suite covers:
  SS-AUD-001  identity secret absent from local DB (raw file scan)
  SS-AUD-002  server password absent from local DB
  SS-AUD-003  secrets absent from logs (Secret newtype redaction)
  SS-AUD-005  failure returns safe typed error (NotFound)
  SS-AUD-006  delete removes entry
  SS-TC-003   Linux round-trip set/get/delete

Verified on 2026-05-13 against the local keyutils backend (cargo
test runs need 'keyctl session -' to provide a valid session
keyring under non-interactive shells, documented in the spike
README). The CLI driver additionally observed a real locked
gnome-keyring collection and exercised the typed-error → fallback
path live.

Surfaced finding for the decision register: DEC-013 does not pin
a Linux secure-storage backend policy. Both Secret Service and
keyutils are 'equivalent' per the requirements; production code
needs an owner ruling.

Out of scope: Windows DPAPI, macOS/iOS Keychain, Android Keystore,
SS-AUD-004 (covered by diagnostics-redaction spike), SS-AUD-007/008
(process / migration items).

Authority: PoC plan §2, ADR-006, SDD-078, SRS-091..095,
SysRS-158..162.
Not product code; not promoted into chanora_storage.
2026-05-14 12:26:23 +08:00

Chanora

Chanora is a cross-platform voice communication client for TeamSpeak-compatible servers.

It is built with a shared Flutter UI and a Rust core, with TeamSpeak-compatible protocol integration isolated behind tsclientlib.

Flutter UI + Rust Core + tsclientlib

Chanora is an independent project and is not affiliated with, endorsed by, sponsored by, or officially associated with TeamSpeak.


Status

Chanora is currently in early planning and baseline-candidate design.

Current documentation baseline: v0.9.2
Current status: Baseline Candidate
Implementation status: Not production-ready

The current engineering focus is:

  • defining the system and software architecture;
  • preparing the Flutter + Rust application structure;
  • validating TeamSpeak-compatible protocol integration through tsclientlib;
  • defining cross-platform audio behavior;
  • preparing release, verification, security, privacy, and legal gates.

Target Platforms

Chanora is intended to support:

  • Windows
  • macOS
  • Linux
  • Android
  • iOS / iPadOS

Current platform policy:

Platform Baseline
iOS / iPadOS runtime target iOS 13+ unless Flutter, plugin, audio, or product constraints require raising it
App Store Connect upload gate Xcode 26+ with iOS 26 / iPadOS 26 SDK+ for upload on or after 2026-04-28
Android runtime target Android API 24+ unless Flutter, plugin, audio, or product constraints require raising it
Google Play target API Target the Google Play-required API level on upload date

The App Store / Play Store upload gates are release requirements. They are separate from local development and internal testing requirements.


Architecture Overview

Chanora separates UI, protocol logic, state synchronization, audio processing, diagnostics, and platform services.

Flutter Application
  ├─ App Shell
  ├─ Material 3 / Chanora Design System
  ├─ Feature Modules
  ├─ View Models / State
  └─ Typed Flutter/Rust Bridge

Rust Core
  ├─ Connection Manager
  ├─ State Synchronization
  ├─ Protocol Adapter
  ├─ Audio Subsystem
  ├─ Storage Services
  └─ Diagnostics

Protocol Layer
  └─ tsclientlib
      └─ TeamSpeak-compatible server

Key architecture rules:

  • Flutter does not call tsclientlib directly.
  • Protocol-specific types do not leak into the Flutter UI layer.
  • Rust Core owns protocol coordination, state synchronization, audio logic, storage services, diagnostics, and bridge-facing DTOs.
  • Flutter owns presentation, navigation, Material 3 theming, accessibility, localization presentation, and platform UI behavior.
  • Product localization and server-provided content are separated.
  • UTF-8 is the internal cross-layer text representation.
  • Non-UTF-8 conversion, if needed, occurs only at explicit protocol or platform boundaries.

MVP Direction

The current recommended MVP scope is:

Area MVP decision
Active server connections One active server connection per client instance
UI baseline Material 3 + Chanora Design System
Product language English UI first, i18n-ready architecture
Server content Preserve Unicode and do not translate server-provided content
Audio processing defaults Echo Canceller, Automatic Gain Control, Noise Suppression, and High-Pass Filter enabled where supported and stable
Audio implementation path Platform-native first; fallback isolated behind the audio subsystem
Local non-secret storage SQLite or equivalent embedded database
Secret storage Platform secure storage
Flutter/Rust bridge Stable typed bridge with generated or schema-controlled DTOs
Diagnostics Local, user-initiated export only
Telemetry None in MVP
Crash reporting Disabled unless explicitly approved later

Repository Layout

The repository documentation is expected to live under docs/.

docs/
  requirements/
    sysrs.md
    srs.md

  architecture/
    sysdes.md
    sad.md
    sdd.md

  verification/
    verification-master-plan.md
    swe4-unit-verification-plan.md
    swe5-software-integration-verification-plan.md
    swe6-software-verification-plan.md
    sys4-system-integration-verification-plan.md

  release/
    release-readiness-go-nogo-record.md
    platform-release-policy.md

  security/
    security-privacy-legal-guideline.md
    threat-model.md
    secure-storage-audit-report.md
    diagnostic-redaction-audit-report.md
    dependency-and-supply-chain-report.md

  privacy/
    privacy-policy.md

  legal/
    trademark-and-attribution-review.md

  ui-ux/
    material3-guideline.md
    material3-design-tokens.md
    material3-component-catalog.md
    adaptive-layout-platform-guide.md

  i18n/
    localization-architecture.md

  governance/
    document-index.md
    document-naming-convention.md
    traceability-matrix.md
    baseline-approval-record.md
    baseline-candidate-validation-report.md
    document-review-report.md
    product-decision-register.md
    decision-impact-assessment.md
    git-commit-message-convention.md
    repo-format-validation-report.md
    path-migration-map.md

  references/
    external-references.md
    aspice-swe2-swe3-integration-note.md

Implementation source folders may be added later. A likely structure is:

apps/
  chanora_flutter/

core/
  chanora_core/

crates/
  chanora_protocol/
  chanora_audio/
  chanora_state/
  chanora_storage/
  chanora_diagnostics/
  chanora_bridge/

The exact implementation layout should be finalized when the repository scaffold is created.


Documentation Entry Points

Start here:

Topic Document
System requirements docs/requirements/sysrs.md
Software requirements docs/requirements/srs.md
System architecture docs/architecture/sysdes.md
Software architecture docs/architecture/sad.md
Software detailed design docs/architecture/sdd.md
Verification strategy docs/verification/verification-master-plan.md
Release readiness docs/release/release-readiness-go-nogo-record.md
Platform release policy docs/release/platform-release-policy.md
Product decisions docs/governance/product-decision-register.md
Traceability docs/governance/traceability-matrix.md
Security/privacy/legal gates docs/security/security-privacy-legal-guideline.md

Engineering Process

Chanora follows this documentation hierarchy:

SysRS -> SysDes -> SRS -> SAD -> SDD

Direct traceability rules:

Document Direct upstream source
SysDes SysRS
SRS SysDes only
SAD SRS only
SDD SAD only

Verification mapping:

SDD -> SWE.4 Unit Verification
SAD + SDD -> SWE.5 Software Integration Verification
SRS -> SWE.6 Software Verification
SysDes -> SYS.4 System Integration Verification

Release readiness is tracked separately through the Go/No-Go record.


Release Readiness

A release is not approved by design documents alone.

Before an external or public release, the project must complete:

docs/release/release-readiness-go-nogo-record.md

The release decision must explicitly state:

Go
Conditional Go
No-Go

Release readiness must include:

  • release scope;
  • build number;
  • commit SHA;
  • Git tag;
  • artifact hashes;
  • satisfied P0/MVP requirements;
  • deferred requirements;
  • verification results;
  • waivers;
  • security review status;
  • platform readiness;
  • legal and OSS review status;
  • privacy policy status;
  • approval decision and approvers.

Security, privacy, and legal evidence are required before public or store release.

Required documents include:

docs/security/threat-model.md
docs/security/secure-storage-audit-report.md
docs/security/diagnostic-redaction-audit-report.md
docs/security/dependency-and-supply-chain-report.md
docs/privacy/privacy-policy.md
docs/legal/trademark-and-attribution-review.md

Important gates:

  • identity secrets and server passwords must use platform secure storage;
  • logs and diagnostic exports must redact secrets;
  • diagnostic export must be user-initiated unless a later approved policy changes this;
  • dependency licenses and vulnerabilities must be reviewed;
  • OSS notices must be prepared where required;
  • public wording must not imply official TeamSpeak affiliation;
  • privacy policy must describe local storage, diagnostics, permissions, and data handling.

Git Commit Convention

Chanora uses a Conventional Commits style format:

<type>(<scope>): <summary>

Examples:

feat(voice): add push-to-talk state handling
fix(protocol): recover channel tree after reconnect snapshot
docs(sad): add interface catalog and performance view
i18n(ui): add fallback behavior for missing localization keys
sec(diagnostics): redact server password from export bundle
release(android): prepare internal alpha build metadata

See:

docs/governance/git-commit-message-convention.md

Development

Implementation commands will be added after the repository scaffold is finalized.

Expected future commands may include:

flutter pub get
flutter test
cargo test
cargo clippy
cargo fmt

Do not treat these as authoritative until the actual Flutter/Rust workspace has been created.


Contributing

Before making a change:

  1. Check the affected requirement/design document.
  2. Confirm the correct traceability layer.
  3. Use the Git commit convention.
  4. Update docs and verification plans when the change affects requirements, architecture, detailed design, release behavior, security, privacy, or legal gates.

License

TBD.

The license model must be confirmed before public release. See:

docs/governance/product-decision-register.md
docs/security/dependency-and-supply-chain-report.md
docs/legal/trademark-and-attribution-review.md
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