docs(changelog): audit unreleased changes for v2026.8.4

[code-yeongyu]

Summary

• audit all 47 commits and 127 changed files since v2026.8.3-3
• add ultra-detailed user-facing release notes for coding-agent PRs fix(release): pin stable Bun binary compiler #674, fix(coding-agent): hide Bun console diagnostics in TUI #677, fix(goal): shorten user-grace auto-resume countdown to 10s #682, fix(coding-agent): required-compaction review fixes for #679 #684, fix(coding-agent): suppress aborted compaction stream errors #685, fix(coding-agent): keep default fallback chains when users configure their own #686, fix(goal): prompt to resume blocked goals on restart #687, fix(coding-agent): resume a provider-error-blocked goal on the next user message #688, feat(coding-agent): render shared rule activations #689, feat(coding-agent): share one transcript notice kit across loop-guard, ttsr, goal, and fallback UI #692, and feat(ttsr): interrupt cross-turn repetition loops #694
• document the breaking eval summary contract and transcript/detached-cell rendering from feat(senpi-codemode): replace eval title with required user-language summary #695 in the senpi-codemode changelog
• classify merge wrappers, test-only test(mcp): barrier cache assertions on exact refreshed tool names #693, QA companions, change-ledger updates, CI-only maintenance, and release scaffolding without duplicate bullets

Audit evidence

• RED before edits: 13 merged PRs in range, but only 11 explicitly represented; fix(goal): shorten user-grace auto-resume countdown to 10s #682 and fix(goal): prompt to resume blocked goals on restart #687 were missing
• GREEN after edits: all 47 commits classified, all required PR/package mappings represented, released sections untouched
• complete local evidence:
  • local-ignore/qa-evidence/20260804-release/pre-edit-changelog-red.md
  • local-ignore/qa-evidence/20260804-release/commit-diff-matrix.md
  • local-ignore/qa-evidence/20260804-release/post-edit-changelog-green.md

The evidence directory is intentionally gitignored and remains local.

Verification

• npm --prefix packages/coding-agent test -- test/changelog.test.ts — 2 tests passed
• git diff --check — passed
• all six release-managed changelogs contain exactly one [Unreleased] section
• only packages/coding-agent/CHANGELOG.md and packages/senpi-codemode/CHANGELOG.md changed
• package-lock.json unchanged

Release intent

After this PR is merged and main is clean/CI-green, the repository release guide will be followed with scripts/release.mjs for v2026.8.4. The tag-triggered workflow uses GitHub Actions OIDC through the npm-publish environment; no local npm token is required.

---

Summary by cubic

Audited and finalized the v2026.8.4 unreleased changelogs. Updated packages/coding-agent with clear notes on the new transcript notice system, repetition protection, shorter continuation grace, and recovery/console/fallback fixes; and documented a breaking eval API change and summary rendering in packages/senpi-codemode.

• Migration
  • Replace eval arg title with required summary (user-language string).
  • Update callers/tests that referenced title; summary appears in transcript, detached cells, and completion notices.

^{Written for commit 087ac33. Summary will update on new commits.}