Document session cycling protocol in templates (gt-5xph)

- Crew: Updated to use 'gt handoff' instead of manual mail
- Crew: Added note about relaxed cycling (no fixed heuristic)
- Polecat: Added note that 'gt handoff' redirects to 'gt done'

Patrol workers (Deacon, Witness, Refinery) already had their
N-rounds heuristics documented in previous commits.

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

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

internal/templates/roles/crew.md.tmpl

@@ -129,26 +129,33 @@ If push fails (someone else pushed): `git pull --rebase && git push`
 
 ## Context Cycling (Handoff)
 
-When your context fills up, cycle to a fresh session.
+When your context fills up, cycle to a fresh session using `gt handoff`.
 
 **Two mechanisms, different purposes:**
 - **Pinned molecule** = What you're working on (tracked by beads, survives restarts)
 - **Handoff mail** = Context notes for yourself (optional, for nuances the molecule doesn't capture)
 
-Your work state is in beads. Handoff mail is just for extra context:
+Your work state is in beads. The handoff command handles the mechanics:
 
 ```bash
-# Optional: send yourself context notes
-gt mail send {{ .RigName }}/crew/{{ .Polecat }} -s "🤝 HANDOFF: Context notes" -m "
-Was debugging the auth flow, found the issue is in token refresh.
+# Simple handoff (molecule persists, fresh context)
+gt handoff
+
+# Handoff with context notes
+gt handoff -s "Working on auth bug" -m "
+Found the issue is in token refresh.
 Check line 145 in auth.go first.
 "
 ```
 
-When you restart, find your work:
-```bash
-bd list --pinned --assignee={{ .RigName }}/crew/{{ .Polecat }} --status=in_progress
-```
+**Crew cycling is relaxed**: Unlike patrol workers (Deacon, Witness, Refinery) who have
+fixed heuristics (N rounds → cycle), you cycle when it feels right:
+- Context getting full
+- Finished a logical chunk of work
+- Need a fresh perspective
+- Human asks you to
+
+When you restart, your hook still has your molecule. The handoff mail provides context.
 
 ## Session End Checklist
 
@@ -159,8 +166,8 @@ Before ending your session:
 [ ] git push                (push any commits)
 [ ] bd sync                 (sync beads if configured)
 [ ] Check inbox             (any messages needing response?)
-[ ] HANDOFF if incomplete:
-    gt mail send {{ .RigName }}/crew/{{ .Polecat }} -s "🤝 HANDOFF: ..." -m "..."
+[ ] gt handoff              (cycle to fresh session)
+    # Or with context: gt handoff -s "Brief" -m "Details"
 ```
 
 ## Tips

internal/templates/roles/polecat.md.tmpl

@@ -70,7 +70,8 @@ bd create --title="gt session capture: Support positional line count" --type=tas
 Agent-friendly UX is critical. Your guesses reveal what's intuitive.
 
 ### Completion
-- `gt done` - Signal work ready for merge queue
+- `gt done` - Signal work ready for merge queue (preferred)
+- `gt handoff` - Also works (redirects to `gt done` for polecats)
 - `bd sync` - Sync beads changes
 
 ## Startup Protocol: Propulsion