fix: web UI routines tab shows all routines regardless of creating channel (#391)

Routines created via Telegram (or any WASM channel) were invisible in the
web UI because the routines list endpoint filtered by GATEWAY_USER_ID,
which didn't match the Telegram user's ID stored on the routine.

Add list_all_routines() to the RoutineStore trait (both libSQL and
PostgreSQL backends) and use it in the web dashboard handlers so all
routines are visible regardless of which channel created them.

Co-authored-by: Claude Opus 4.6 (1M context) <[email protected]>

src/history/store.rs

@@ -963,6 +963,15 @@ impl Store {
         rows.iter().map(row_to_routine).collect()
     }
 
+    /// List all routines across all users.
+    pub async fn list_all_routines(&self) -> Result<Vec<Routine>, DatabaseError> {
+        let conn = self.conn().await?;
+        let rows = conn
+            .query("SELECT * FROM routines ORDER BY name", &[])
+            .await?;
+        rows.iter().map(row_to_routine).collect()
+    }
+
     /// List all enabled routines with event triggers (for event matching).
     pub async fn list_event_routines(&self) -> Result<Vec<Routine>, DatabaseError> {
         let conn = self.conn().await?;