fix(hooks): remove Stop hook that caused 30s timeouts (gt-quoj)

The Stop hook with `gt costs record` was causing 30-second timeouts
on every session stop due to beads socket connection issues. Since
cost tracking is disabled anyway (Claude Code doesn't expose session
costs), this hook provided no value.

Changes:
- Remove Stop hook from settings-autonomous.json and settings-interactive.json
- Remove Stop hook validation from claude_settings_check.go
- Update tests to not expect Stop hook

The cost tracking infrastructure remains in costs.go for future use
when Claude Code exposes session costs via API or environment variable.

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

internal/claude/config/settings-autonomous.json

@@ -65,17 +65,6 @@
           }
         ]
       }
-    ],
-    "Stop": [
-      {
-        "matcher": "",
-        "hooks": [
-          {
-            "type": "command",
-            "command": "export PATH=\"$HOME/go/bin:$HOME/bin:$PATH\" && gt costs record"
-          }
-        ]
-      }
     ]
   }
 }

internal/claude/config/settings-interactive.json

@@ -65,17 +65,6 @@
           }
         ]
       }
-    ],
-    "Stop": [
-      {
-        "matcher": "",
-        "hooks": [
-          {
-            "type": "command",
-            "command": "export PATH=\"$HOME/go/bin:$HOME/bin:$PATH\" && gt costs record"
-          }
-        ]
-      }
     ]
   }
 }

internal/doctor/claude_settings_check.go

@@ -335,8 +335,8 @@ func (c *ClaudeSettingsCheck) checkSettings(path, _ string) []string {
 	// All templates should have:
 	// 1. enabledPlugins
 	// 2. PATH export in hooks
-	// 3. Stop hook with gt costs record (for autonomous)
-	// 4. gt nudge deacon session-started in SessionStart
+	// 3. gt nudge deacon session-started in SessionStart
+	// Note: Stop hook was removed (gt-quoj) - cost tracking is disabled
 
 	// Check enabledPlugins
 	if _, ok := actual["enabledPlugins"]; !ok {
@@ -359,10 +359,9 @@ func (c *ClaudeSettingsCheck) checkSettings(path, _ string) []string {
 		missing = append(missing, "deacon nudge")
 	}
 
-	// Check Stop hook exists with gt costs record (for all roles)
-	if !c.hookHasPattern(hooks, "Stop", "gt costs record") {
-		missing = append(missing, "Stop hook")
-	}
+	// Note: Stop hook with gt costs record was removed in gt-quoj.
+	// Cost tracking is disabled - Claude Code doesn't expose session costs.
+	// The Stop hook was causing 30s timeouts on session stop with no benefit.
 
 	return missing
 }

internal/doctor/claude_settings_check_test.go

@@ -56,17 +56,6 @@ func createValidSettings(t *testing.T, path string) {
 					},
 				},
 			},
-			"Stop": []any{
-				map[string]any{
-					"matcher": "**",
-					"hooks": []any{
-						map[string]any{
-							"type":    "command",
-							"command": "gt costs record --session $CLAUDE_SESSION_ID",
-						},
-					},
-				},
-			},
 		},
 	}
 
@@ -106,17 +95,6 @@ func createStaleSettings(t *testing.T, path string, missingElements ...string) {
 					},
 				},
 			},
-			"Stop": []any{
-				map[string]any{
-					"matcher": "**",
-					"hooks": []any{
-						map[string]any{
-							"type":    "command",
-							"command": "gt costs record --session $CLAUDE_SESSION_ID",
-						},
-					},
-				},
-			},
 		},
 	}
 
@@ -156,9 +134,6 @@ func createStaleSettings(t *testing.T, path string, missingElements ...string) {
 				}
 			}
 			hookObj["hooks"] = filtered
-		case "Stop":
-			hooks := settings["hooks"].(map[string]any)
-			delete(hooks, "Stop")
 		}
 	}
 
@@ -374,33 +349,6 @@ func TestClaudeSettingsCheck_MissingDeaconNudge(t *testing.T) {
 	}
 }
 
-func TestClaudeSettingsCheck_MissingStopHook(t *testing.T) {
-	tmpDir := t.TempDir()
-
-	// Create stale settings missing Stop hook (at correct location)
-	mayorSettings := filepath.Join(tmpDir, "mayor", ".claude", "settings.json")
-	createStaleSettings(t, mayorSettings, "Stop")
-
-	check := NewClaudeSettingsCheck()
-	ctx := &CheckContext{TownRoot: tmpDir}
-
-	result := check.Run(ctx)
-
-	if result.Status != StatusError {
-		t.Errorf("expected StatusError for missing Stop hook, got %v", result.Status)
-	}
-	found := false
-	for _, d := range result.Details {
-		if strings.Contains(d, "Stop hook") {
-			found = true
-			break
-		}
-	}
-	if !found {
-		t.Errorf("expected details to mention Stop hook, got %v", result.Details)
-	}
-}
-
 func TestClaudeSettingsCheck_WrongLocationWitness(t *testing.T) {
 	tmpDir := t.TempDir()
 	rigName := "testrig"
@@ -468,7 +416,7 @@ func TestClaudeSettingsCheck_MultipleStaleFiles(t *testing.T) {
 	createStaleSettings(t, mayorSettings, "PATH")
 
 	deaconSettings := filepath.Join(tmpDir, "deacon", ".claude", "settings.json")
-	createStaleSettings(t, deaconSettings, "Stop")
+	createStaleSettings(t, deaconSettings, "deacon-nudge")
 
 	// Settings inside git repo (witness/rig/.claude/) are wrong location
 	witnessWrong := filepath.Join(tmpDir, rigName, "witness", "rig", ".claude", "settings.json")
@@ -1037,8 +985,7 @@ func TestClaudeSettingsCheck_TownRootSettingsWarnsInsteadOfKilling(t *testing.T)
 		"env": {"PATH": "/usr/bin"},
 		"enabledPlugins": ["claude-code-expert"],
 		"hooks": {
-			"SessionStart": [{"matcher": "", "hooks": [{"type": "command", "command": "gt prime"}]}],
-			"Stop": [{"matcher": "", "hooks": [{"type": "command", "command": "gt handoff"}]}]
+			"SessionStart": [{"matcher": "", "hooks": [{"type": "command", "command": "gt prime"}]}]
 		}
 	}`
 	if err := os.WriteFile(staleTownRootSettings, []byte(settingsContent), 0644); err != nil {