merge: integrate origin/dev into modular-enforcement branch

Resolves all merge conflicts, preserving our split module structure
while integrating all dev changes:
- Custom agent summaries support (parseRegisteredAgentSummaries)
- Background notification queue (enqueueNotificationForParent)
- Atlas shared git-worktree module (collectGitDiffStats, formatFileChanges)
- Ralph-loop withTimeout + DEFAULT_API_TIMEOUT=5000
- Session recovery assistant_prefill_unsupported error type
- Atlas agentOverrides forwarding
- Config handler plan model demotion (buildPlanDemoteConfig)
- Delegate-task agentOverrides, promptSyncWithModelSuggestionRetry, variant
- LSP init timeout + stale init detection
- isPlanFamily function + task-continuation-enforcer hook
- Handoff command

src/hooks/unstable-agent-babysitter/index.test.ts

@@ -1,8 +1,9 @@
+import { afterEach, describe, expect, test } from "bun:test"
 import { _resetForTesting, setMainSession } from "../../features/claude-code-session-state"
 import type { BackgroundTask } from "../../features/background-agent"
 import { createUnstableAgentBabysitterHook } from "./index"
 
-const projectDir = "/Users/yeongyu/local-workspaces/oh-my-opencode"
+const projectDir = process.cwd()
 
 type BabysitterContext = Parameters<typeof createUnstableAgentBabysitterHook>[0]