Make dotfiles bootstrap-only under the shared agent policy

[willgriffin]

Adopt policy revision 1.0.0, the repository manifest, canonical AGENTS guidance, thin harness adapters, and the shared claim/PR lifecycle. This migration remains a small ready-for-review PR.

[willgriffin]

{"branch": "codex/agent-policy", "claimed_at": "2026-07-11T20:20:42.604870Z", "heartbeat_at": "2026-07-11T20:35:50.482120Z", "lease_seconds": 14400, "owner": "willgriffin", "release_reason": "blocked", "released_at": "2026-07-11T20:37:53.407896Z", "runtime": "codex", "schema": "hv-agent-claim:v1", "session": "codex-wave3-dotfiles", "worktree": "/Users/will/Work/_trees/dotfiles-agent-policy"}

[willgriffin]

Ready for review. Blocked only until have-config PR #28 publishes the signed policy digest and AGENT_POLICY_ARTIFACT is configured; smallest next action: review and merge #28.

[willgriffin]

{"branch": "codex/agent-policy", "claimed_at": "2026-07-11T21:00:06.936798Z", "heartbeat_at": "2026-07-11T21:00:06.936980Z", "lease_seconds": 14400, "owner": "codex", "release_reason": "blocked", "released_at": "2026-07-11T21:05:19.138612Z", "runtime": "codex-desktop", "schema": "hv-agent-claim:v1", "session": "review-resolution", "worktree": "/Users/will/Work/_trees/dotfiles-agent-policy"}

[willgriffin]

Policy extraction hardened in 68a9c5b; blocked only until AGENT_POLICY_ARTIFACT is configured.