Replace SQLite with JSON file storage

- Remove database.py (SQLite) from tools/storage/ and dss-mvp1/
- Add json_store.py with full JSON-based storage layer
- Update 16 files to use new json_store imports
- Storage now mirrors DSS canonical structure:
  .dss/data/
  ├── _system/    (config, cache, activity)
  ├── projects/   (per-project: tokens, components, styles)
  └── teams/      (team definitions)
- Remove Docker files (not needed)
- Update DSS_CORE.json to v1.1.0

Philosophy: "Eat our own food" - storage structure matches DSS design

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

tools/api/server.py

@@ -64,10 +64,9 @@ from browser_logger import router as browser_log_router
 
 # Legacy imports (will gradually migrate these)
 from config import config
-from storage.database import (
+from storage.json_store import (
     Projects, Components, SyncHistory, ActivityLog, Teams, Cache, get_stats,
-    FigmaFiles, ESREDefinitions, TokenDriftDetector, CodeMetrics, TestResults,
-    get_connection
+    FigmaFiles, CodeMetrics, TestResults, TokenDrift, Tokens, Styles
 )
 from figma.figma_tools import FigmaToolSuite
 
@@ -405,16 +404,15 @@ async def health():
     import psutil
     from pathlib import Path
 
-    # ❤️ Check Heart (database) connectivity
+    # ❤️ Check Heart (storage) connectivity
     db_ok = False
     try:
-        with get_connection() as conn:
-            conn.execute("SELECT 1").fetchone()
-            db_ok = True
+        from storage.json_store import DATA_DIR
+        db_ok = DATA_DIR.exists()
     except Exception as e:
         import traceback
         error_trace = traceback.format_exc()
-        print(f"🏥 VITAL SIGN: Heart (database) error: {type(e).__name__}: {e}", flush=True)
+        print(f"🏥 VITAL SIGN: Heart (storage) error: {type(e).__name__}: {e}", flush=True)
         print(f"   Traceback:\n{error_trace}", flush=True)
         pass