feat(FN-882): add loop detection recovery with compact-and-resume

- Add ContextLimitDetector to detect agent loops via repeated tool call patterns
- Implement compact-and-resume strategy: summarize conversation and restart agent from current step
- Add loop recovery to StuckTaskDetector with configurable attempt tracking and retry limits
- Extend executor with automatic loop recovery on context limit detection
- Add loop recovery support to pi executor with same compact-and-resume pattern
- Add comprehensive tests for context-limit-detector, stuck-task-detector loop detection, executor, and pi recovery
- Add changeset for patch bump to @gsxdsm/fusion
- Update README with loop detection and recovery documentation

packages/cli/src/commands/dashboard.ts

@@ -577,6 +577,7 @@ export async function runDashboard(port: number, opts: { paused?: boolean; dev?:
     const executorRef: { current: TaskExecutor | null } = { current: null };
     const stuckTaskDetector = new StuckTaskDetector(store, {
       beforeRequeue: (taskId) => selfHealing.checkStuckBudget(taskId),
+      onLoopDetected: (event) => executorRef.current?.handleLoopDetected(event) ?? Promise.resolve(false),
       onStuck: (event) => {
         executorRef.current?.markStuckAborted(event.taskId, event.shouldRequeue);
         console.log(