v0.8.0

Changes

• Sync pstack from f5bdd68 to 2cbf585. Add benchmark-checklist, correct and
  principle-explain-the-number (53 skills). Subagents are fresh by default,
  autopilot audit ticks run hourly, architect screens designs for agent
  mistakes, perf-issue and hillclimb follow the performance mantras, and the
  Opening a PR playbook prefers the run's built-in PR tool. The upstream model
  slug and Cursor rule edits are not ported. poteto-help is skipped because it
  needs repository docs that the installer does not ship.
• Keep autopilots restart-safe without /goal: on the operator's go the root
  writes a program objective (queue, order, verification rule, who merges, done
  condition) to a saved program.md or the Harness goal mechanism, and every
  hourly tick re-reads it. check-plan.mjs requires the objective and hourly
  cadence in program checklists, outside fenced examples.
• Add a Claude Code SessionStart hook to the plugin (hooks/hooks.json,
  scripts/session-hook.mjs). It routes multi-file or unknown-cause work to
  meta-mode on startup, resume, clear and compact. Turn it off with
  "sessionHook": false in ~/.config/mstack/models.json. The installer path
  ships no hook. readModelConfig now reads UTF-8 BOM and UTF-16 LE files.
  Plugin validation checks the hook, its context file and agent paths.
• Harden check-plan.mjs: strip a UTF-8 BOM, parse fences like CommonMark
  (at most three spaces of indent), and require a box under each program task
  and under Close the program.
• Harden worktree-audit: scan Claude, Codex (CODEX_HOME) and pi session
  stores, match Windows, UNC and JSON-escaped path spellings without matching
  sibling paths, and mark a worktree safe only when its HEAD is in origin/main
  or exactly matches a PR merged into main.
• Add docs/guide/12-claude-code-routing.md.

Upgrade notes

Reinstall skills to receive the new and updated skills. The hook ships with the
Claude Code plugin only and needs node on PATH; the plugin and the installer
should not both be active on one machine. Plans that already use the old
/goal and 30-minute tick wording fail check-plan until they name the program
objective and the hourly cadence. Effort-level agent variants were evaluated and
not added: the Codex agent conversion rejects an effort field and a
Claude-only generated copy would be dead code.

Verification

Each of the three pull requests was reviewed with pi (provider relay-gpt, model
GPT-6.1-SOL) until its last round returned no P0 or P1 findings, and Node 18/22
CI passed on Linux, macOS and Windows with the package and pinned-source checks.
claude plugin validate . --strict passed for the hook PR on Claude Code
2.1.289. The hourly program-objective flow was not exercised through a real
restart.