Cleanup: Remove per-harness lifecycle hooks — agentctl webhooks are the single source

[c-h-]

Context

agentctl#108 + PR #123 added native lifecycle webhook emission. agentctl now emits session.stopped webhooks when any harness (Claude Code, OpenCode, Codex) stops.

Current state (messy)

Three separate event sources feeding OrgLoop:

1. Claude Code stop hook (~/.claude/settings.json → orgloop hook claude-code-stop) — per-harness
2. OpenCode lifecycle plugin (~/.config/opencode/plugins/orgloop-lifecycle.ts) — per-harness
3. agentctl webhook (AGENTCTL_WEBHOOK_URL) — unified, NEW

Plus three OrgLoop sources (opencode, claude-code, agentctl) and three routes all pointing to the same SOP.

Target state (clean)

1. Delete Claude Code stop hook from ~/.claude/settings.json (the orgloop hook claude-code-stop entry)
2. Delete OpenCode lifecycle plugin at ~/.config/opencode/plugins/orgloop-lifecycle.ts
3. Delete opencode and claude-code sources from OrgLoop connector config
4. Delete coding-agent-supervisor and claude-code-supervisor routes from OrgLoop
5. Keep only the agentctl source and agentctl-supervisor route

Verification

After cleanup, stop a Claude Code session and verify:

• agentctl daemon emits webhook to OrgLoop
• OrgLoop receives it on agentctl source
• Supervisor SOP fires

Blocked on

Confirming agentctl webhooks actually fire reliably for Claude Code sessions. The webhook emission path needs E2E testing before we delete the fallback hooks.

[c-h-]

Done. E2E verified: agentctl webhook → OrgLoop agentctl source → supervisor SOP.

Cleaned up:

• Deleted Claude Code stop hook (orgloop hook claude-code-stop) from ~/.claude/settings.json
• Deleted OpenCode lifecycle plugin (~/.config/opencode/plugins/orgloop-lifecycle.ts)
• Removed opencode and claude-code sources from OrgLoop connector config
• Removed duplicate routes, kept only agentctl-supervisor

agentctl is now the single source of truth for coding agent lifecycle events.