fix: notification banner would cause refresh of page

server/database/init.sql

@@ -77,3 +77,16 @@ CREATE TABLE IF NOT EXISTS push_subscriptions (
     created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
     FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
 );
+
+-- Session custom names (provider-agnostic display name overrides)
+CREATE TABLE IF NOT EXISTS session_names (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    session_id TEXT NOT NULL,
+    provider TEXT NOT NULL DEFAULT 'claude',
+    custom_name TEXT NOT NULL,
+    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+    updated_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+    UNIQUE(session_id, provider)
+);
+
+CREATE INDEX IF NOT EXISTS idx_session_names_lookup ON session_names(session_id, provider);