Stabilize core correctness and sync project plan state

src/atocore/models/database.py

@@ -37,6 +37,7 @@ CREATE TABLE IF NOT EXISTS memories (
     id TEXT PRIMARY KEY,
     memory_type TEXT NOT NULL,
     content TEXT NOT NULL,
+    project TEXT DEFAULT '',
     source_chunk_id TEXT REFERENCES source_chunks(id),
     confidence REAL DEFAULT 1.0,
     status TEXT DEFAULT 'active',
@@ -64,6 +65,7 @@ CREATE TABLE IF NOT EXISTS interactions (
 
 CREATE INDEX IF NOT EXISTS idx_chunks_document ON source_chunks(document_id);
 CREATE INDEX IF NOT EXISTS idx_memories_type ON memories(memory_type);
+CREATE INDEX IF NOT EXISTS idx_memories_project ON memories(project);
 CREATE INDEX IF NOT EXISTS idx_memories_status ON memories(status);
 CREATE INDEX IF NOT EXISTS idx_interactions_project ON interactions(project_id);
 """
@@ -78,9 +80,22 @@ def init_db() -> None:
     _ensure_data_dir()
     with get_connection() as conn:
         conn.executescript(SCHEMA_SQL)
+        _apply_migrations(conn)
     log.info("database_initialized", path=str(_config.settings.db_path))
 
 
+def _apply_migrations(conn: sqlite3.Connection) -> None:
+    """Apply lightweight schema migrations for existing local databases."""
+    if not _column_exists(conn, "memories", "project"):
+        conn.execute("ALTER TABLE memories ADD COLUMN project TEXT DEFAULT ''")
+    conn.execute("CREATE INDEX IF NOT EXISTS idx_memories_project ON memories(project)")
+
+
+def _column_exists(conn: sqlite3.Connection, table: str, column: str) -> bool:
+    rows = conn.execute(f"PRAGMA table_info({table})").fetchall()
+    return any(row["name"] == column for row in rows)
+
+
 @contextmanager
 def get_connection() -> Generator[sqlite3.Connection, None, None]:
     """Get a database connection with row factory."""