refactor: remove legacy .beads-wisp infrastructure (gt-5klh)

Wisps are now just a flag on regular beads issues (Wisp=true).
No separate directory needed - hooks stored in .beads/.

Changes:
- wisp package: WispDir now points to .beads/, removed PatrolCycle
- manager.go: removed initWispBeads() - no separate dir to create
- mrqueue.go: MRs stored in .beads/mq/ instead of .beads-wisp/mq/
- doctor: removed obsolete wisp directory checks
- docs: updated wisp-architecture.md to reflect simplified model

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

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

internal/cmd/doctor.go

@@ -71,13 +71,6 @@ func runDoctor(cmd *cobra.Command, args []string) error {
 	d.Register(doctor.NewLinkedPaneCheck())
 	d.Register(doctor.NewThemeCheck())
 
-	// Wisp storage checks
-	d.Register(doctor.NewWispExistsCheck())
-	d.Register(doctor.NewWispGitCheck())
-	d.Register(doctor.NewWispOrphansCheck())
-	d.Register(doctor.NewWispSizeCheck())
-	d.Register(doctor.NewWispStaleCheck())
-
 	// Patrol system checks
 	d.Register(doctor.NewPatrolMoleculesExistCheck())
 	d.Register(doctor.NewPatrolHooksWiredCheck())

internal/cmd/molecule.go

@@ -35,7 +35,7 @@ LIFECYCLE:
        ▼ instantiate/bond
   ┌─────────────────┐
   │ Mol (durable)   │ ← tracked in .beads/
-  │ Wisp (ephemeral)│ ← tracked in .beads-wisp/
+  │ Wisp (ephemeral)│ ← tracked in .beads/ with Wisp=true
   └────────┬────────┘
            │
     ┌──────┴──────┐

internal/cmd/rig.go

@@ -44,7 +44,6 @@ var rigAddCmd = &cobra.Command{
 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
@@ -218,7 +217,6 @@ func runRigAdd(cmd *cobra.Command, args []string) error {
 	fmt.Printf("  %s/\n", name)
 	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")