Sync latest TrueGrowth updates

openspec/changes/unify-local-data-persistence/tasks.md

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+# Tasks: Unified local persistence
+
+## 1. Specification
+- [x] 1.1 Create OpenSpec proposal, design, task list, and delta spec.
+- [ ] 1.2 Validate with `openspec validate unify-local-data-persistence --strict` once the OpenSpec CLI is available in this checkout.
+
+## 2. Local API Storage
+- [x] 2.1 Resolve canonical desktop data and runtime paths for Electron and standalone Local API runs.
+- [x] 2.2 Initialize `truegrowth.sqlite` with tables for tasks, assets, project records, settings, workflow state, social publishing, and migration records.
+- [x] 2.3 Persist runtime tasks, cleared task IDs, runtime assets, workflow state, social publishing state, AIGCPanel state, and runtime settings to the ledger.
+- [x] 2.4 Preserve JSON shadow files for compatibility while preferring ledger reads.
+- [x] 2.5 Persist Drawnix workspace folders, boards, and workspace state through the Local API ledger while keeping IndexedDB as a shadow/offline fallback.
+
+## 3. Migration And Diagnostics
+- [x] 3.1 Add storage diagnostics, migrate, export, and import endpoints.
+- [x] 3.2 Import legacy `.truegrowth-runtime` metadata without moving large files.
+- [x] 3.3 Report split roots, SQLite availability, and canonical path status.
+
+## 4. Client And Verification
+- [x] 4.1 Add frontend Local API client helpers and types for the storage endpoints.
+- [x] 4.2 Run Node syntax checks, TypeScript checks, and targeted Local API verifier coverage.
+- [x] 4.3 Document remaining browser IndexedDB transition limits.
+
+## Notes
+- OpenSpec strict validation is still pending because the local `openspec` CLI is not available in this checkout (`pnpm exec openspec ...` reports command not found).
+- Browser IndexedDB remains as an offline/shadow cache for Drawnix workspace and UI-only preferences; Local API/SQLite is now authoritative when the desktop Local API is reachable.