feat: add favorites table, CRUD commands, and Pinia store

src-tauri/src/database.rs

@@ -158,6 +158,19 @@ pub fn init_db(conn: &Connection) -> Result<(), rusqlite::Error> {
         [],
     )?;
 
+    conn.execute(
+        "CREATE TABLE IF NOT EXISTS favorites (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            project_id INTEGER NOT NULL,
+            task_id INTEGER,
+            description TEXT,
+            sort_order INTEGER DEFAULT 0,
+            FOREIGN KEY (project_id) REFERENCES projects(id) ON DELETE CASCADE,
+            FOREIGN KEY (task_id) REFERENCES tasks(id) ON DELETE SET NULL
+        )",
+        [],
+    )?;
+
     conn.execute(
         "CREATE TABLE IF NOT EXISTS settings (
             key TEXT PRIMARY KEY,