feat: Implement phases 6 to 9 of the review cycle fix process, including discovery, batching, parallel planning, execution, and completion

- Added Phase 6: Fix Discovery & Batching with intelligent grouping and batching of findings.
- Added Phase 7: Fix Parallel Planning to launch planning agents for concurrent analysis and aggregation of partial plans.
- Added Phase 8: Fix Execution for stage-based execution of fixes with conservative test verification.
- Added Phase 9: Fix Completion to aggregate results, generate summary reports, and handle session completion.
- Introduced new frontend components: ResizeHandle for draggable resizing of sidebar panels and useResizablePanel hook for managing panel sizes with localStorage persistence.
- Added PowerShell script for checking TypeScript errors in source code, excluding test files.

ccw/frontend/src/components/orchestrator/README.md

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+# Orchestrator Components
+
+## Tool Call Timeline Components
+
+### Components
+
+#### `ToolCallCard`
+Expandable card displaying tool call details with status, output, and results.
+
+**Props:**
+- `toolCall`: `ToolCallExecution` - Tool call execution data
+- `isExpanded`: `boolean` - Whether the card is expanded
+- `onToggle`: `() => void` - Callback when toggle expand/collapse
+- `className?`: `string` - Optional CSS class name
+
+**Features:**
+- Status icon (pending/executing/success/error/canceled)
+- Kind icon (execute/patch/thinking/web_search/mcp_tool/file_operation)
+- Duration display
+- Expand/collapse animation
+- stdout/stderr output with syntax highlighting
+- Exit code badge
+- Error message display
+- Result display
+
+#### `ToolCallsTimeline`
+Vertical timeline displaying tool calls in chronological order.
+
+**Props:**
+- `toolCalls`: `ToolCallExecution[]` - Array of tool call executions
+- `onToggleExpand`: `(callId: string) => void` - Callback when tool call toggled
+- `className?`: `string` - Optional CSS class name
+
+**Features:**
+- Chronological sorting by start time
+- Timeline dot with status color
+- Auto-expand executing tool calls
+- Auto-scroll to executing tool call
+- Empty state with icon
+- Summary statistics (total/success/error/running)
+- Loading indicator when tools are executing
+
+### Usage Example
+
+```tsx
+import { ToolCallsTimeline } from '@/components/orchestrator';
+import { useExecutionStore } from '@/stores/executionStore';
+
+function ToolCallsTab({ nodeId }: { nodeId: string }) {
+  const toolCalls = useExecutionStore((state) =>
+    state.getToolCallsForNode(nodeId)
+  );
+  const toggleToolCallExpanded = useExecutionStore(
+    (state) => state.toggleToolCallExpanded
+  );
+
+  return (
+    <div className="p-4">
+      <ToolCallsTimeline
+        toolCalls={toolCalls}
+        onToggleExpand={(callId) => toggleToolCallExpanded(nodeId, callId)}
+      />
+    </div>
+  );
+}
+```
+
+### Integration with ExecutionStore
+
+The components integrate with `executionStore` for state management:
+
+```tsx
+// Get tool calls for a node
+const toolCalls = useExecutionStore((state) =>
+  state.getToolCallsForNode(nodeId)
+);
+
+// Toggle expand state
+const handleToggle = (callId: string) => {
+  useExecutionStore.getState().toggleToolCallExpanded(nodeId, callId);
+};
+```
+
+### Data Flow
+
+```
+WebSocket Message
+    │
+    ▼
+useWebSocket (parsing)
+    │
+    ▼
+executionStore.startToolCall()
+    │
+    ▼
+ToolCallsTimeline (re-render)
+    │
+    ▼
+ToolCallCard (display)
+```
+
+### Styling
+
+Components use Tailwind CSS with the following conventions:
+- `border-border` - Border color
+- `bg-muted` - Muted background
+- `text-destructive` - Error text color
+- `text-green-500` - Success text color
+- `text-primary` - Primary text color
+- `animate-pulse` - Pulse animation for executing status