1.4.11

release: 1.4.11 — fix Démarrer in assist mode, tidy labels

E2E test in Chrome caught four bugs the unit tests missed.

1. StartPromptDialog 'Démarrer ▶' rejected with 'Set approve=true'
   Card Play passed approve:true but the dialog didn't. Server
   refused starts in assist mode, leaving the user confused why
   the card Play worked but the post-create Démarrer didn't.

2. 'Sans sous-tâche, l'orchestrateur n'a rien à exécuter' is wrong
   The auto-shim in /runs creates a covering subtask. Replaced
   with 'L'agent va générer une sous-tâche couvrant la description
   et l'exécuter directement.'

3. Double-dash in branch name when title slugifies to 32 chars
   Add test2.html → slug ended on a dash → backlog/…--run_022.
   Re-trim trailing dashes after the slice cap.

4. 'Créer + découper' submit label always shown
   The splitter only runs when autoSplit is checked (default off).
   Now flips to plain 'Créer' / 'Create' when off.

E2E run in Chrome:
- Created task 'create test_30_avril.html with Hello World inside'
- Single confirmation, Démarrer autofocused
- Hit Enter → run kicked off on claude-code
- agent.write /Users/jimmy/Dev/test-backlog-demo/.../test_30_avril.html
- run.committed on backlog/subtask_010-create-test-30-avril-html-with-h-run_023
- Activity panel populated live
- All green.