2026-08-25 — Sync skills and rules on drift :: Agent Rules

Added skill sync-agent-rules: on drift, fetch/pull $AGENT_RULES_PATH, repair discovery installs, refresh local overlays, stamp AGENT_RULES_SYNCED_SHA in $CODE_ROOT/harness.md.
Version model: skills/rules set = agent-rules git SHA (not per-skill SemVer).
Always-on pointers in user.md, org AGENTS.md, general/global.md, general/rules-skills-sync.md; catalog/BOOTSTRAP/agents/_MAIN.md/harness-setup/harness.example.md wired.