Add patrol awareness and wiring to gt rig add / gt doctor (gt-7923)

gt rig add changes:
- Seed patrol molecules (Deacon, Witness, Refinery) when adding rig
- Create plugin directories at town (~gt/plugins/) and rig levels
- Update command documentation and structure output

gt doctor changes:
- patrol-molecules-exist: Verify patrol molecules exist
- patrol-hooks-wired: Verify daemon triggers patrols
- patrol-not-stuck: Detect stale wisps (>1h in_progress)
- patrol-plugins-accessible: Verify plugin directories exist
- patrol-roles-have-prompts: Verify role prompts exist

All patrol checks support --fix where applicable.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

internal/cmd/rig.go

@@ -45,12 +45,18 @@ This creates a rig container with:
   - config.json           Rig configuration
   - .beads/               Rig-level issue tracking (initialized)
   - .beads-wisp/          Local wisp/molecule tracking (gitignored)
+  - plugins/              Rig-level plugin directory
   - refinery/rig/         Canonical main clone
   - mayor/rig/            Mayor's working clone
   - crew/main/            Default human workspace
   - witness/              Witness agent directory
   - polecats/             Worker directory (empty)
 
+The command also:
+  - Seeds patrol molecules (Deacon, Witness, Refinery)
+  - Creates ~/gt/plugins/ (town-level) if it doesn't exist
+  - Creates <rig>/plugins/ (rig-level)
+
 Example:
   gt rig add gastown https://github.com/steveyegge/gastown
   gt rig add my-project git@github.com:user/repo.git --prefix mp`,
@@ -201,6 +207,7 @@ func runRigAdd(cmd *cobra.Command, args []string) error {
 	fmt.Printf("  ├── config.json\n")
 	fmt.Printf("  ├── .beads/           (prefix: %s)\n", newRig.Config.Prefix)
 	fmt.Printf("  ├── .beads-wisp/      (local wisp/molecule tracking)\n")
+	fmt.Printf("  ├── plugins/          (rig-level plugins)\n")
 	fmt.Printf("  ├── refinery/rig/     (canonical main)\n")
 	fmt.Printf("  ├── mayor/rig/        (mayor's clone)\n")
 	fmt.Printf("  ├── crew/%s/        (your workspace)\n", rigAddCrew)