feat: launch Protect Today from deadline reminders (Closes #723)

tests/test_deadline_reminders.py

@@ -47,6 +47,7 @@ async def test_deadline_reminder_sends_one_private_local_day_digest_and_deduplic
         "title": "1 deadline needs attention",
         "body": "Open Agenda to review or replan it.",
         "route": "#/my-work/agenda",
+        "protect_route": "#/my-work/agenda/protect-today",
         "tag": "stackchain-deadline-digest-2026-08-13",
         "deadline_count": 1,
     }]

tests/test_my_work.py

@@ -40,6 +40,20 @@ COMMENT_ACTIONS = Path(__file__).parents[1] / "frontend" / "comment-actions.js"
 PICK_WORK = Path(__file__).parents[1] / "frontend" / "pick-work.js"
 WORK_ROUTE = Path(__file__).parents[1] / "frontend" / "work-route.js"
 UPDATE_OWNERSHIP = Path(__file__).parents[1] / "frontend" / "update-ownership.js"
+
+
+def test_protect_today_route_is_an_explicit_agenda_action():
+    script = f"""
+const routes = require({json.dumps(str(WORK_ROUTE))});
+process.stdout.write(JSON.stringify(routes.parse('#/my-work/agenda/protect-today')));
+"""
+    result = subprocess.run(
+        ["node", "-e", script], check=True, capture_output=True, text=True
+    )
+
+    assert json.loads(result.stdout) == {
+        "kind": "queue", "filter": "agenda", "action": "protect-today"
+    }
 CARD_PLANNING = Path(__file__).parents[1] / "frontend" / "card-planning.js"
 TODAY_WORK = Path(__file__).parents[1] / "frontend" / "today-work.js"
 WORK_SELECTION = Path(__file__).parents[1] / "frontend" / "work-selection.js"

tests/test_service_worker.py

@@ -459,14 +459,15 @@ def test_update_digest_push_opens_unread_inbox_without_item_actions_or_private_c
     assert "must-not-render" not in json.dumps(result["notifications"])
 
 
-def test_deadline_digest_push_opens_agenda_without_rendering_private_copy():
+def test_deadline_digest_push_offers_protect_today_and_agenda_without_rendering_private_copy():
     result = run_worker_scenario(
         """
   await dispatchPush({
     title:'must-not-render', body:'private details must-not-render',
-    tag:'stackchain-deadline-digest-2026-08-13', route:'#/my-work/agenda', deadline_count:3,
+    tag:'stackchain-deadline-digest-2026-08-13', route:'#/my-work/agenda',
+    protect_route:'#/my-work/agenda/protect-today', deadline_count:3,
   });
-  await dispatchNotificationClick('#/my-work/agenda');
+  await dispatchNotificationClick('#/my-work/agenda/protect-today', 'protect-today', null, 'stackchain-deadline-digest-2026-08-13');
   process.stdout.write(JSON.stringify(state));
 """
     )
@@ -476,15 +477,37 @@ def test_deadline_digest_push_opens_agenda_without_rendering_private_copy():
         "options": {
             "body": "Open Agenda to review or replan them.",
             "tag": "stackchain-deadline-digest-2026-08-13",
-            "data": {"route": "#/my-work/agenda"},
+            "actions": [
+                {"action": "protect-today", "title": "Protect Today"},
+                {"action": "open-agenda", "title": "Open Agenda"},
+            ],
+            "data": {
+                "route": "#/my-work/agenda",
+                "protectRoute": "#/my-work/agenda/protect-today",
+            },
         },
     }]
     assert result["opened"] == [
-        "https://forge.example/dashboard/#/my-work/agenda"
+        "https://forge.example/dashboard/#/my-work/agenda/protect-today"
     ]
     assert "must-not-render" not in json.dumps(result["notifications"])
 
 
+def test_deadline_digest_open_agenda_action_preserves_browsing_flow():
+    result = run_worker_scenario(
+        """
+  await dispatchPush({
+    tag:'stackchain-deadline-digest-2026-08-13', route:'#/my-work/agenda',
+    protect_route:'#/my-work/agenda/protect-today', deadline_count:1,
+  });
+  await dispatchNotificationClick('#/my-work/agenda', 'open-agenda', null, 'stackchain-deadline-digest-2026-08-13');
+  process.stdout.write(JSON.stringify(state));
+"""
+    )
+
+    assert result["opened"] == ["https://forge.example/dashboard/#/my-work/agenda"]
+
+
 def test_push_mark_read_action_confirms_authenticated_mutation_without_opening_app():
     result = run_worker_scenario(
         """