feat(meetings): add rename_meeting command

Validates a non-empty trimmed title before delegating to the store.

src-tauri/src/commands.rs

@@ -2036,6 +2036,25 @@ pub async fn attach_meeting_to_event(
         .map_err(|e| WaError::new("storage", e.to_string()))
 }
 
+/// Manually rename a meeting — recordings default to "Untitled meeting" with
+/// no prior way to change that from the UI.
+#[tauri::command]
+pub async fn rename_meeting(
+    state: State<'_, AppState>,
+    meeting_id: MeetingId,
+    title: String,
+) -> WaResult<()> {
+    let title = title.trim();
+    if title.is_empty() {
+        return Err(WaError::new("storage", "title cannot be empty"));
+    }
+    state
+        .store
+        .rename_meeting(&meeting_id, title)
+        .await
+        .map_err(|e| WaError::new("storage", e.to_string()))
+}
+
 // ---- Sync / upload (Phase 9, ADR-0010) ----
 
 /// Config payload for add/update (snake_case, matching the TS `SyncTargetConfig`
@@ -2382,13 +2401,21 @@ pub async fn test_sync_target(
                         (row.credential_ref.clone(), None)
                     };
                 let target = crate::sync::WebDavTarget {
-                    base_url: config.base_url.clone().or(row.base_url.clone()).unwrap_or_default(),
+                    base_url: config
+                        .base_url
+                        .clone()
+                        .or(row.base_url.clone())
+                        .unwrap_or_default(),
                     provider_hint: config.provider_hint.clone().or(row.provider_hint.clone()),
                     remote_base_path: config
                         .remote_base_path
                         .clone()
                         .unwrap_or(row.remote_base_path.clone()),
-                    username: config.username.clone().or(row.username.clone()).unwrap_or_default(),
+                    username: config
+                        .username
+                        .clone()
+                        .or(row.username.clone())
+                        .unwrap_or_default(),
                     credential_ref,
                     third_party: false,
                     allow_plaintext_lan: config