fix(plugins): address review -- no manifest fallback for live plugins, keep mode names whole, send registered spelling

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

test/test_api_v3_display_modes.py

@@ -7,7 +7,7 @@ manifest.json off disk and reimplemented PluginManager's own fallbacks.
 """
 
 import json
-from unittest.mock import MagicMock
+from unittest.mock import MagicMock, patch
 
 import pytest
 
@@ -155,3 +155,14 @@ class TestOneBadConfigSectionDoesNotBlankTheList:
             side_effect=RuntimeError("GET https://x/y?api_key=SEC123 failed"))
         body = api_v3_client.get('/api/v3/display/modes').get_json()
         assert 'SEC123' not in json.dumps(body)
+
+
+class TestOnDemandUsesTheRegisteredSpelling:
+    def test_a_mode_differing_in_case_is_sent_as_registered(self, client):
+        with patch('web_interface.blueprints.api_v3.display._deliver_on_demand',
+                   return_value=('socket', None)) as deliver:
+            response = client.post('/api/v3/display/on-demand/start',
+                                   json={'plugin_id': 'football-scoreboard',
+                                         'mode': 'NFL_LIVE', 'start_service': False})
+        assert response.status_code == 200, response.get_json()
+        assert deliver.call_args.args[0]['mode'] == 'nfl_live'

test/test_live_display_modes.py

@@ -165,6 +165,12 @@ class TestSnapshotAndView:
         published = snapshot["plugins"]["soccer-scoreboard"]["modes"]
         assert len(published) == rt._MAX_MODES
 
+    def test_a_mode_name_is_kept_whole_or_dropped(self):
+        long_mode = "x" * (rt._ID_CHARS + 1)
+        snapshot = build_runtime_snapshot(_loaded_states(["ok", long_mode]),
+                                          started_at=1.0, now=self.NOW)
+        assert snapshot["plugins"]["soccer-scoreboard"]["modes"] == ["ok"]
+
     def test_non_strings_from_a_hand_made_snapshot_are_dropped(self):
         snapshot = {"schema": rt.SNAPSHOT_SCHEMA, "running": True,
                     "published_at": self.NOW, "plugins": {
@@ -202,6 +208,13 @@ class TestCatalog:
         assert catalog.get_plugin_display_modes("clock-simple") == ["clock"]
         assert catalog.find_plugin_for_mode("clock") == "clock-simple"
 
+    def test_a_mode_the_display_dropped_does_not_resolve_by_manifest(
+            self, plugins_dir, shared_cache):
+        display_cache, web_cache = shared_cache
+        PluginRuntimePublisher(display_cache, _loaded_states(CUSTOM)).tick()
+        catalog = self._catalog(plugins_dir, web_cache)
+        assert catalog.find_plugin_for_mode("soccer_eng.1_live") is None
+
     def test_a_stopped_display_falls_back_to_manifests(self, plugins_dir, shared_cache):
         display_cache, web_cache = shared_cache
         publisher = PluginRuntimePublisher(display_cache, _loaded_states(REGISTERED))