fix(release): declare Debian package section

[rianjs]

Fixes the package metadata defect found during #18 rollout.

• declare Debian Section: sound at the Tauri bundle source
• bump the corrective release to 0.2.1
• keep Cargo/Tauri/lock versions aligned
• make the release contract fail if the section disappears

Evidence: the v0.2.0 APT receiver downloaded both architectures, then reprepro rejected them with No section given for retune.

Checks:

• node scripts/check-release.mjs
• node scripts/check-docs.mjs
• cargo fmt --all --check
• cargo metadata --locked --no-deps
• cargo test --workspace (318 passed, 1 hardware-only ignored)
• desktop tests (23 passed)
• git diff --check

Relates to #18.

[rianjs]

Independent TDD/release assessment: no P1/P2/P3 findings. The committed release-contract check covers the regression at its source. Hosted acceptance still must inspect the built Debian control metadata and prove reprepro accepts both architectures before v0.2.1 is tagged.

[rianjs-bot]

Automated PR Review

Reviewed commit: 5c0a9f11865f
Profile: codex-rianjs-bot - Posting as: rianjs-bot[bot]

Summary

Reviewer	Findings
tauri:config-ipc	0
rust:implementation-tests	0
automation:ci-release	0
policies:conventions	0

Reviewer Coverage

• tauri:config-ipc — complete (broad); inspected 1 assigned file (4 inspected across reviewers): apps/desktop/src-tauri/tauri.conf.json; skipped: none; constraints: Review limited to the assigned Tauri configuration change.
• rust:implementation-tests — complete (broad); inspected 2 assigned files (4 inspected across reviewers): Cargo.lock, apps/desktop/src-tauri/Cargo.toml; skipped: none; constraints: Review limited to the assigned Cargo manifest and lockfile; release-contract/configuration files were outside this assignment. rtk cargo could not spawn Cargo in this environment, so metadata and desktop test execution could not be independently verified.
• automation:ci-release — complete (broad); skipped: none; constraints: Cargo was unavailable in the review environment, so cargo metadata validation could not be run.
• policies:conventions — complete (broad); skipped: none; constraints: Review limited to the assigned release/versioning metadata files and repository-local guidance; no shared CLI conventions checkout was available.

Inspected files (4)

• Cargo.lock
• apps/desktop/src-tauri/Cargo.toml
• apps/desktop/src-tauri/tauri.conf.json
• scripts/check-release.mjs

0 PR discussion threads considered. 0 summarized; 0 resolved.

---

Completed in 57s | gpt-5.6-terra | cr 0.10.284

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Model	gpt-5.6-terra
Reviewers	tauri:config-ipc, rust:implementation-tests, automation:ci-release, policies:conventions
Engine	codex_cli · gpt-5.6-terra
Reviewed by	cr · rianjs-bot[bot]
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[rianjs]

Hosted release dry-run evidence from https://github.com/open-cli-collective/Retune/actions/runs/31534325377:

Both generated packages contain the expected fields:

retune_0.2.1_amd64.deb: Package retune; Version 0.2.1; Architecture amd64; Section sound; Priority optional
retune_0.2.1_arm64.deb: Package retune; Version 0.2.1; Architecture arm64; Section sound; Priority optional

The complete native matrix/aggregate is still running; merge remains gated on that run and normal CI.