feat: display ConfigChange hook events in terminal

Detects [ConfigChange Hook] lines in stderr and emits them as
config-change line type with [config] prefix in purple.

Closes #151

src-tauri/src/wsl_bridge.rs

@@ -761,18 +761,21 @@ fn handle_stderr(
                     }
                 }
 
-                // Worktree hook events are informational — emit with a distinct type
-                let is_worktree_event = line.contains("[WorktreeCreate Hook]")
-                    || line.contains("[WorktreeRemove Hook]");
+                // Hook events are informational — emit with distinct types instead of error
+                let line_type = if line.contains("[WorktreeCreate Hook]")
+                    || line.contains("[WorktreeRemove Hook]")
+                {
+                    "worktree"
+                } else if line.contains("[ConfigChange Hook]") {
+                    "config-change"
+                } else {
+                    "error"
+                };
 
                 let _ = app.emit(
                     "claude:output",
                     OutputEvent {
-                        line_type: if is_worktree_event {
-                            "worktree".to_string()
-                        } else {
-                            "error".to_string()
-                        },
+                        line_type: line_type.to_string(),
                         content: line,
                         tool_name: None,
                         conversation_id: conversation_id.clone(),

src/lib/components/Terminal.svelte

@@ -100,6 +100,8 @@
         return "terminal-compact-prompt";
       case "worktree":
         return "terminal-worktree";
+      case "config-change":
+        return "terminal-config-change";
       default:
         return "terminal-default";
     }
@@ -121,6 +123,8 @@
         return "[rate-limit]";
       case "worktree":
         return "[worktree]";
+      case "config-change":
+        return "[config]";
       default:
         return "";
     }
@@ -394,6 +398,10 @@
     color: var(--terminal-worktree, #34d399);
   }
 
+  .terminal-config-change {
+    color: var(--terminal-config-change, #a78bfa);
+  }
+
   .compact-action-btn {
     display: inline-flex;
     align-items: center;

src/lib/components/Terminal.test.ts

@@ -42,6 +42,8 @@ function getLineClass(type: string): string {
       return "terminal-compact-prompt";
     case "worktree":
       return "terminal-worktree";
+    case "config-change":
+      return "terminal-config-change";
     default:
       return "terminal-default";
   }
@@ -63,6 +65,8 @@ function getLinePrefix(type: string): string {
       return "[rate-limit]";
     case "worktree":
       return "[worktree]";
+    case "config-change":
+      return "[config]";
     default:
       return "";
   }
@@ -124,6 +128,10 @@ describe("getLineClass", () => {
     expect(getLineClass("worktree")).toBe("terminal-worktree");
   });
 
+  it("returns terminal-config-change for config-change lines", () => {
+    expect(getLineClass("config-change")).toBe("terminal-config-change");
+  });
+
   it("returns terminal-default for unknown line types", () => {
     expect(getLineClass("unknown")).toBe("terminal-default");
     expect(getLineClass("")).toBe("terminal-default");
@@ -164,6 +172,10 @@ describe("getLinePrefix", () => {
     expect(getLinePrefix("worktree")).toBe("[worktree]");
   });
 
+  it("returns [config] for config-change lines", () => {
+    expect(getLinePrefix("config-change")).toBe("[config]");
+  });
+
   it("returns empty string for thinking lines (no prefix)", () => {
     expect(getLinePrefix("thinking")).toBe("");
   });

src/lib/tauri.ts

@@ -332,7 +332,8 @@ export async function initializeTauriListeners() {
           | "thinking"
           | "rate-limit"
           | "compact-prompt"
-          | "worktree",
+          | "worktree"
+          | "config-change",
         content,
         tool_name || undefined,
         costData,
@@ -350,7 +351,8 @@ export async function initializeTauriListeners() {
           | "thinking"
           | "rate-limit"
           | "compact-prompt"
-          | "worktree",
+          | "worktree"
+          | "config-change",
         content,
         tool_name || undefined,
         costData,

src/lib/types/messages.ts

@@ -9,7 +9,8 @@ export interface TerminalLine {
     | "thinking"
     | "rate-limit"
     | "compact-prompt"
-    | "worktree";
+    | "worktree"
+    | "config-change";
   content: string;
   timestamp: Date;
   toolName?: string;