v8.0.2 — Milestone 8 Archive & Core Fixes

Changed

• Commit Lifecycle Rule (ZAC) in system-prompt <constraints> — Added a <commit_lifecycle_rule> bullet to the top-level <constraints> section documenting the two commit-producing MCP tools (stage_and_inject_diff for development-time, commit_and_clean_task for closure-time), their distinct lifecycle semantics, the two-commit flow (feature + closure), and ZAC enforcement. Previously the ZAC intent was only visible in <bash_phase> implementation templates, allowing LLM agents to invoke commit_and_clean_task during implementation (Zen Router incident, Task 13). System prompt version bumped to 8.0.1 (PATCH).
• Milestone 8 archive — Compacted Tasks 69, 77–79 into docs/history/milestone-8-summary.md and moved completed task files to tasks/archive/. System prompt version bumped to 8.0.2.

Fixed

• Orphaned commit hash bug in commit_and_clean_task — The tool captured the commit hash before git commit --amend, so the hash stored in the task file pointed to a commit that became unreachable after the amend replaced it. Reworked the tool to a two-commit flow: the feature commit hash is captured and stored in the task file, then the cleaned task file is committed as a separate chore: close task N closure commit. The stored hash is now permanently reachable from HEAD, git show <hash> returns the real code diff, and no amend/orphaned commits are produced. The idempotency guard matches the exact cleaned-block structure (regex), so a raw injected diff that merely mentions "Stored in Commit Hash" (e.g. this very changelog entry or the guard's own source line) cannot false-positive and block a legitimate closure. Regression tests: test_commit_and_clean_task_stores_reachable_hash, test_commit_and_clean_task_guard_no_false_positive_on_diff_mention.
• stage_and_inject_diff crash when an ignored context-reports/ directory exists — the tool staged with git add . :!... negative pathspecs, which makes git exit 1 with "paths are ignored" whenever an excluded path actually exists on disk (the accumulated context-reports/ reports), blocking every closure until deleted. Replaced with plain git add -A . (gitignore-respected) plus defense-in-depth git reset -q -- <pattern> for the sensitive/ignored paths. Regression test: test_stage_and_inject_diff_with_ignored_context_reports.