Added user system

storage/storage.go

@@ -21,6 +21,24 @@ func InitDB(filepath string) error {
 
 	schema := `
     PRAGMA foreign_keys = ON;
+           
+           CREATE TABLE IF NOT EXISTS users (
+        id TEXT PRIMARY KEY,
+        username TEXT NOT NULL UNIQUE,
+        password TEXT NOT NULL,
+        role TEXT NOT NULL
+    );
+
+    CREATE TABLE IF NOT EXISTS refresh_tokens (
+        id TEXT PRIMARY KEY,
+        user_id TEXT NOT NULL,
+        token_hash TEXT NOT NULL,
+        expires_at INTEGER NOT NULL,
+        created_at INTEGER NOT NULL,
+        revoked INTEGER NOT NULL DEFAULT 0,
+        device_info TEXT,
+        FOREIGN KEY(user_id) REFERENCES users(id)
+    );
 
     CREATE TABLE IF NOT EXISTS items (
         id INTEGER PRIMARY KEY AUTOINCREMENT,