# Release 0.9.2 Preparation Plan

## Status
Release preparation is complete pending human review of the remaining validation risks noted below. No tag was created and nothing was published.

## Goal
Prepare `/home/runner/work/c64bridge/c64bridge` for release `0.9.2` without publishing, tagging, or running external release publication steps.

## Assumptions
- `0.9.1` is the correct comparison base because that tag exists and is the latest release before `0.9.2`.
- The top-level `./build` script is the documented build tool and release wrapper.
- Release metadata follows the existing pattern used by the `0.9.1` release commit: update `package.json`, `package-lock.json`, `mcp.json`, and `server.json`, then regenerate static MCP metadata through the build.
- The changelog should stay concise and use the current `## version - YYYY-MM-DD` heading format with recent `Highlights` and `Fixes` sections.

## Files Inspected
- `/home/runner/work/c64bridge/c64bridge/README.md`
- `/home/runner/work/c64bridge/c64bridge/CHANGELOG.md`
- `/home/runner/work/c64bridge/c64bridge/package.json`
- `/home/runner/work/c64bridge/c64bridge/package-lock.json`
- `/home/runner/work/c64bridge/c64bridge/mcp.json`
- `/home/runner/work/c64bridge/c64bridge/server.json`
- `/home/runner/work/c64bridge/c64bridge/mcp/server.json`
- `/home/runner/work/c64bridge/c64bridge/build`
- `/home/runner/work/c64bridge/c64bridge/scripts/prepare-release.mjs`
- `/home/runner/work/c64bridge/c64bridge/scripts/generate-changelog.mjs`

## Repository Investigation
- Current branch during release preparation: `copilot/prepare-release-092`
- Worktree state at task start: clean
- Repository was initially shallow; full history and tags were fetched before comparing releases.
- Recent tags after fetch: `0.9.1`, `0.9.0`, `0.8.1`, `0.8.0`, `0.7.4`, ...
- Current package version before edits: `0.9.1`
- Existing release notes file: `/home/runner/work/c64bridge/c64bridge/CHANGELOG.md`
- Chosen comparison base: `0.9.1`

## README-Derived Build and Release Commands
- Build tool: `./build`
- Build command: `./build build`
- Test matrix command: `./build test:matrix`
- Coverage command: `./build coverage`
- Full CI-equivalent default command: `./build`
- Release preparation command documented in README: `./build release --version 1.2.3`
- README does not document a separate formatter, linter, or standalone typecheck command; `./build build` performs TypeScript compile plus README/MCP generation.

## Changelog Style Notes
- File uses top-level heading `# Changelog`.
- Recent entries use `## <version> - <YYYY-MM-DD>`.
- Recent releases prefer concise `### Highlights` and `### Fixes` sections.
- Tone is brief and user-facing, with the most important changes first.
- Contributor acknowledgements are optional and only used when relevant.

## Comparison Summary From `0.9.1..HEAD`
- Expanded translation tooling with a stronger assembler, shared opcode inventory, full disassembly support, BASIC tokenization, and VICE symbol handling.
- Improved grouped input schema compatibility and refreshed resource metadata.
- Hardened memory validation and improved coverage/reporting behaviour.
- Included a minor README fix in the comparison range, but not as a headline release item.

## Changelog Decisions
- Used `0.9.1` as the comparison base.
- Replaced the autogenerated raw-commit changelog draft with polished user-facing prose.
- Kept the entry short and matched the recent `Highlights` / `Fixes` structure.
- Led with the assembler/disassembler/toolchain improvements.
- Included schema compatibility, memory validation, and coverage/reporting hardening as fixes.
- Excluded internal planning/audit/worklog churn and commit hashes from the final release notes.

## Version Metadata Decisions
- Updated `/home/runner/work/c64bridge/c64bridge/package.json` to `0.9.2`.
- Updated `/home/runner/work/c64bridge/c64bridge/package-lock.json` to `0.9.2`.
- Updated `/home/runner/work/c64bridge/c64bridge/mcp.json` to `0.9.2`.
- Updated `/home/runner/work/c64bridge/c64bridge/server.json` to `0.9.2`.
- Regenerated `/home/runner/work/c64bridge/c64bridge/mcp/server.json` via `./build build` so the static MCP metadata matches the release version.

## Commands Run
- `git --no-pager status --short --branch && git --no-pager tag --sort=-version:refname | head -20` — PASS
- `git rev-parse --is-shallow-repository && git --no-pager log --oneline -n 15` — PASS
- `git fetch --unshallow origin --tags` — PASS
- `git branch --show-current && git rev-parse --is-shallow-repository && git --no-pager status --short && git --no-pager tag --sort=-version:refname | head -10 && git --no-pager log --oneline --decorate 0.9.1..HEAD && git --no-pager diff --stat 0.9.1..HEAD` — PASS
- `./build build` (baseline) — PASS
- `./build test:matrix` (baseline) — FAIL; flaky network-dependent `downloads GitHub repo zip via default fetcher` test failed in c64u/mock.
- `./build coverage` (baseline) — FAIL; same pre-existing flaky fetch test failed in a coverage shard.
- `./build release --version 0.9.2` — PASS; updated release metadata and produced an autogenerated changelog draft.
- Manual changelog rewrite of `/home/runner/work/c64bridge/c64bridge/CHANGELOG.md` — PASS
- `./build build` (post-update) — PASS; regenerated static MCP metadata.
- `./build test:matrix` (post-update) — FAIL; vice/device tests require `x64sc`, which is unavailable in this environment (`spawn x64sc ENOENT` / smoke-test timeout).
- `./build coverage` (post-update) — FAIL; c64u/mock coverage shard hit a pre-existing MCP streaming flake (`ECONNREFUSED`) before coverage merge completed.

## Results
- Added a polished `0.9.2` changelog entry in `/home/runner/work/c64bridge/c64bridge/CHANGELOG.md`.
- Updated release metadata files to version `0.9.2`.
- Regenerated static MCP metadata so the checked-in server snapshot also reports `0.9.2`.
- Left the repository in a release-ready metadata state, with validation risks documented rather than hidden.

## Remaining Risks / Blockers
- No hard blocker in the release metadata itself.
- `./build test:matrix` is not green in this environment because the vice/device leg expects `x64sc`, which is missing here.
- `./build coverage` remains nondeterministic due to a pre-existing MCP streaming test flake (`ECONNREFUSED`) in one c64u/mock coverage shard.
- These validation failures appear environmental/flaky rather than caused by the release-preparation edits, but they should be reviewed before publishing.

## Intentional Files Changed
- `/home/runner/work/c64bridge/c64bridge/PLANS.md`
- `/home/runner/work/c64bridge/c64bridge/CHANGELOG.md`
- `/home/runner/work/c64bridge/c64bridge/package.json`
- `/home/runner/work/c64bridge/c64bridge/package-lock.json`
- `/home/runner/work/c64bridge/c64bridge/mcp.json`
- `/home/runner/work/c64bridge/c64bridge/server.json`
- `/home/runner/work/c64bridge/c64bridge/mcp/server.json`
