Add routines module and full goal management

Routines: workout, meditation and must-do routines with timed, rep and
tick steps, sets and rest. A library screen, a builder with templates
and drag-to-reorder steps, and a full-screen player that auto-advances
timed phases, counts backgrounding and logs broken chains as partial.

Goals: a goal editor (deadline, colour, category, default class, archive),
routines linked to goals, and a goal field on tasks and routines. Tasks
added from inside a goal are now actually attached to it via parentId.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KhQh614DMeYoQEH9SoMRUw

frontend/lib/Grounded/comms/Comms.dart

@@ -388,6 +388,13 @@ class Comms implements ConnectComms {
     return await dio.post(navigation.key, data: request);
   }
 
+  @override
+  Future<Response> saveRoutineEntry(Map<String, dynamic> request) async {
+    Pair navigation = await getRequestHeaders(saveRoutine, "");
+    dio.options.headers = navigation.value;
+    return await dio.post(navigation.key, data: request);
+  }
+
   @override
   Future<Response> logRoutineChainEntry(Map<String, dynamic> request) async {
     Pair navigation = await getRequestHeaders(logRoutineChain, "");

frontend/lib/Grounded/comms/ConnectComms.dart

@@ -108,6 +108,8 @@ abstract class ConnectComms {
 
   Future<Response> getMyRoutines(HistoryRequest request);
 
+  Future<Response> saveRoutineEntry(Map<String, dynamic> request);
+
   Future<Response> logRoutineChainEntry(Map<String, dynamic> request);
 
   // ── Training ────────────────────────────────────────────────────────────