feat(statusline): lower max rigs to 3 and add alias support

- Add Alias field to RigEntry struct for short display names
- Limit displayed rigs to 3 (was unlimited, causing overflow)
- Use alias in statusline when configured (e.g., gcr instead of google_cookie_retrieval)
- Show +N overflow indicator when more rigs exist

Closes: hq-5j33zz

internal/cmd/statusline.go

@@ -171,13 +171,17 @@ func runMayorStatusLine(t *tmux.Tmux) error {
 		townRoot, _ = workspace.Find(paneDir)
 	}
 
-	// Load registered rigs to validate against
+	// Load registered rigs to validate against and get aliases
 	registeredRigs := make(map[string]bool)
+	rigAliases := make(map[string]string)
 	if townRoot != "" {
 		rigsConfigPath := filepath.Join(townRoot, "mayor", "rigs.json")
 		if rigsConfig, err := config.LoadRigsConfig(rigsConfigPath); err == nil {
-			for rigName := range rigsConfig.Rigs {
+			for rigName, entry := range rigsConfig.Rigs {
 				registeredRigs[rigName] = true
+				if entry.Alias != "" {
+					rigAliases[rigName] = entry.Alias
+				}
 			}
 		}
 	}
@@ -291,11 +295,16 @@ func runMayorStatusLine(t *tmux.Tmux) error {
 	// Create sortable rig list
 	type rigInfo struct {
 		name   string
+		alias  string
 		status *rigStatus
 	}
 	var rigs []rigInfo
 	for rigName, status := range rigStatuses {
-		rigs = append(rigs, rigInfo{name: rigName, status: status})
+		ri := rigInfo{name: rigName, status: status}
+		if alias, ok := rigAliases[rigName]; ok {
+			ri.alias = alias
+		}
+		rigs = append(rigs, ri)
 	}
 
 	// Sort by: 1) running state, 2) operational state, 3) alphabetical
@@ -321,9 +330,16 @@ func runMayorStatusLine(t *tmux.Tmux) error {
 	})
 
 	// Build display with group separators
+	// Limit to maxRigs to prevent statusline overflow
+	maxRigs := 3
 	var rigParts []string
 	var lastGroup string
+	displayCount := 0
 	for _, rig := range rigs {
+		if displayCount >= maxRigs {
+			break
+		}
+
 		isRunning := rig.status.hasWitness || rig.status.hasRefinery
 		var currentGroup string
 		if isRunning {
@@ -363,7 +379,19 @@ func runMayorStatusLine(t *tmux.Tmux) error {
 		if led == "🅿️" {
 			space = "  "
 		}
-		rigParts = append(rigParts, led+space+rig.name)
+
+		// Use alias if available, otherwise use full name
+		displayName := rig.name
+		if rig.alias != "" {
+			displayName = rig.alias
+		}
+		rigParts = append(rigParts, led+space+displayName)
+		displayCount++
+	}
+
+	// Show overflow indicator if there are more rigs
+	if len(rigs) > maxRigs {
+		rigParts = append(rigParts, fmt.Sprintf("+%d", len(rigs)-maxRigs))
 	}
 
 	if len(rigParts) > 0 {

internal/config/types.go

@@ -168,6 +168,7 @@ type RigEntry struct {
 	AddedAt     time.Time           `json:"added_at"`
 	BeadsConfig *BeadsConfig        `json:"beads,omitempty"`
 	Crew        *CrewRegistryConfig `json:"crew,omitempty"`
+	Alias       string              `json:"alias,omitempty"` // Short display name for statusline
 }
 
 // BeadsConfig represents beads configuration for a rig.