docs: Make documentation convoy-first (gt-yg8bs)

Update all documentation to present convoy as the primary unit of work tracking:

- README.md: Show convoy create before sling in Quick Start and Workflows
- reference.md: Reorder to show Convoy Management before Work Assignment
- understanding-gas-town.md: Add convoy to dispatch workflow example
- mayor.md.tmpl: Add convoy commands to Work Management section
- crew.md.tmpl: Include convoy in dispatch workflow table

Convoy is now the standard workflow - all slings should be part of a convoy.

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

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

docs/reference.md

@@ -214,24 +214,29 @@ gt rig list
 gt rig remove <name>
 ```
 
-### Work Assignment
-```bash
-gt sling <bead> <rig>        # Assign to polecat
-gt sling <bead> <rig> --molecule=<proto>
-```
-
-### Convoy Management (Work Tracking)
+### Convoy Management (Primary Dashboard)
 ```bash
+gt convoy list                          # Dashboard of active convoys
+gt convoy status [convoy-id]            # Show progress (🚚 hq-cv-*)
 gt convoy create "name" [issues...]     # Create convoy tracking issues
 gt convoy create "name" gt-a bd-b --notify mayor/  # With notification
-gt convoy status [convoy-id]            # Show progress (🚚 hq-cv-*)
-gt convoy list                          # Dashboard of active convoys
 gt convoy list --all                    # Include landed convoys
 gt convoy list --status=closed          # Only landed convoys
 ```
 
 Note: "Swarm" is ephemeral (workers on a convoy's issues). See [Convoys](convoy.md).
 
+### Work Assignment
+```bash
+# Standard workflow: convoy first, then sling
+gt convoy create "Feature X" gt-abc gt-def
+gt sling gt-abc <rig>                    # Assign to polecat
+gt sling gt-def <rig> --molecule=<proto> # With workflow template
+
+# Quick sling (auto-creates convoy)
+gt sling <bead> <rig>                    # Auto-convoy for dashboard visibility
+```
+
 ### Communication
 ```bash
 gt mail inbox

docs/understanding-gas-town.md

@@ -138,7 +138,8 @@ For work that should be owned by the target rig:
 # Create issue in target rig
 bd create --prefix beads "Fix authentication bug"
 
-# Sling to target rig's workers
+# Create convoy and sling to target rig
+gt convoy create "Auth fix" bd-xyz
 gt sling bd-xyz beads
 ```