Enrichit les declencheurs/actions de scene (clic/survol/affichage, surbrillance/video/son/visibilite/indication/attendre) et fiabilise la pose d'un fond/decor importe

- Ajoute clic/survol/affichage-ecran comme declencheurs, et surbrillance,
  video, son, visibilite, indication, attendre comme actions, utilisables
  aussi bien par l'editeur manuel (menu lateral Objets/Ecran) que par
  Ruby (IA), avec blocs deplacables/supprimables dans une chaine.
- Corrige plusieurs variantes du bug "impossible de poser un objet hors
  du champ de la camera" (troncature du chainage d'actions a 4 maillons,
  fond importe pose a 128x128 au lieu de sa taille reelle, decalage du
  fond au vrai glisser-depose, redimensionnement manuel jamais propage
  au monde).
- Ajoute un vrai glisser-depose depuis la galerie vers la scene, la
  gestion complete de "Mes assets" (sous-sections Fonds/Decors/Sons/
  Videos, suppression, reclassement fond<->decor sans re-upload).
- Ajoute l'upload de son (limite 3 min) et de video (MP4 uniquement,
  limite 5 min), avec validation de la duree reelle du fichier, et une
  replique audio optionnelle dans une bulle de dialogue.
- Fixe la taille de pose d'un objet/decor importe a 200x200 avec une
  boite de collision de 150x150.
- Filtre le selecteur de fichier des actions son/video par type reel.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

tests/test_triggers.py

@@ -295,7 +295,11 @@ def test_trigger_append_action_route_404s_for_an_unknown_after_id(client, tmp_ga
     assert resp.status_code == 404
 
 
-def test_trigger_append_action_route_404s_when_the_leaf_already_has_a_then(client, tmp_game_slug_cleanup):
+def test_trigger_append_action_route_inserts_between_a_leaf_and_its_existing_then(client, tmp_game_slug_cleanup):
+    """Demande explicite : "pouvoir ajouter n'importe quelle action à
+    n'importe quel niveau du schéma" — poser "+ Ajouter une action" sur
+    un bloc qui a déjà une suite INSÈRE la nouvelle action devant cette
+    suite plutôt que d'échouer (comportement précédent)."""
     slug, screen_id = _create_jeu2d_game(client, tmp_game_slug_cleanup)
     obj_id = _add_personnage(client, slug, screen_id, role="pnj")
     _set_rules(slug, obj_id, [{
@@ -310,9 +314,11 @@ def test_trigger_append_action_route_404s_when_the_leaf_already_has_a_then(clien
         f"/game/{slug}/triggers/{obj_id}/append-action",
         json={"after_id": "d_1", "action": {"type": "variable", "target_variable": "vies", "data_operation": "decrementer"}},
     )
-    assert resp.status_code == 404
+    assert resp.status_code == 200
     obj = screens.get_scene_object(slug, obj_id)
-    assert screens.resolve_collision_rules(obj)[0]["action"]["then"]["target_variable"] == "score"  # inchangé
+    action = screens.resolve_collision_rules(obj)[0]["action"]
+    assert action["then"]["target_variable"] == "vies"
+    assert action["then"]["then"]["target_variable"] == "score"
 
 
 def test_trigger_append_action_route_404s_for_an_unknown_object(client, game):
@@ -320,6 +326,89 @@ def test_trigger_append_action_route_404s_for_an_unknown_object(client, game):
     assert resp.status_code == 404
 
 
+def test_trigger_remove_action_route_removes_the_whole_rule_when_it_is_the_only_leaf(client, tmp_game_slug_cleanup):
+    slug, screen_id = _create_jeu2d_game(client, tmp_game_slug_cleanup)
+    obj_id = _add_personnage(client, slug, screen_id, role="pnj")
+    _set_rules(slug, obj_id, [{
+        "trigger": "collision",
+        "action": {"type": "dialogue", "dialogue": {"id": "d_1", "lines": []}},
+    }])
+
+    resp = client.delete(f"/game/{slug}/triggers/{obj_id}/action/d_1")
+    assert resp.status_code == 200
+    obj = screens.get_scene_object(slug, obj_id)
+    assert screens.resolve_collision_rules(obj) == []
+
+
+def test_trigger_remove_action_route_404s_for_an_unknown_leaf_id(client, tmp_game_slug_cleanup):
+    slug, screen_id = _create_jeu2d_game(client, tmp_game_slug_cleanup)
+    obj_id = _add_personnage(client, slug, screen_id, role="pnj")
+    _set_rules(slug, obj_id, [{
+        "trigger": "collision",
+        "action": {"type": "dialogue", "dialogue": {"id": "d_1", "lines": []}},
+    }])
+
+    resp = client.delete(f"/game/{slug}/triggers/{obj_id}/action/d_absent")
+    assert resp.status_code == 404
+
+
+def test_trigger_move_action_route_swaps_a_leaf_up_in_its_chain(client, tmp_game_slug_cleanup):
+    slug, screen_id = _create_jeu2d_game(client, tmp_game_slug_cleanup)
+    obj_id = _add_personnage(client, slug, screen_id, role="pnj")
+    _set_rules(slug, obj_id, [{
+        "trigger": "collision",
+        "action": {
+            "type": "variable", "id": "v_1", "target_variable": "score", "data_operation": "incrementer", "data_value": "1",
+            "then": {"type": "dialogue", "dialogue": {"id": "d_1", "lines": []}},
+        },
+    }])
+
+    resp = client.post(f"/game/{slug}/triggers/{obj_id}/action/d_1/move", json={"direction": "up"})
+    assert resp.status_code == 200
+    obj = screens.get_scene_object(slug, obj_id)
+    action = screens.resolve_collision_rules(obj)[0]["action"]
+    assert action["type"] == "dialogue"
+    assert action["then"]["target_variable"] == "score"
+
+
+def test_trigger_move_action_route_400s_for_an_invalid_direction(client, tmp_game_slug_cleanup):
+    slug, screen_id = _create_jeu2d_game(client, tmp_game_slug_cleanup)
+    obj_id = _add_personnage(client, slug, screen_id, role="pnj")
+    _set_rules(slug, obj_id, [{
+        "trigger": "collision",
+        "action": {"type": "dialogue", "dialogue": {"id": "d_1", "lines": []}},
+    }])
+
+    resp = client.post(f"/game/{slug}/triggers/{obj_id}/action/d_1/move", json={"direction": "sideways"})
+    assert resp.status_code == 400
+
+
+def test_triggers_get_route_backfills_and_persists_a_missing_leaf_id(client, tmp_game_slug_cleanup):
+    """Bug corrigé : une action "variable" posée sans "id" (par une
+    session antérieure ou par l'IA) restait à jamais impossible à
+    adresser via append-action — le premier GET /triggers doit la rendre
+    adressable, DE FAÇON STABLE (persisté, pas régénéré à chaque appel)."""
+    slug, screen_id = _create_jeu2d_game(client, tmp_game_slug_cleanup)
+    obj_id = _add_personnage(client, slug, screen_id, role="pnj")
+    _set_rules(slug, obj_id, [{
+        "trigger": "collision",
+        "action": {"type": "variable", "target_variable": "score", "data_operation": "incrementer", "data_value": "1"},
+    }])
+
+    resp1 = client.get(f"/game/{slug}/triggers")
+    leaf_id = resp1.get_json()[0]["chain"][0]["id"]
+    assert leaf_id
+
+    resp2 = client.get(f"/game/{slug}/triggers")
+    assert resp2.get_json()[0]["chain"][0]["id"] == leaf_id  # stable, pas régénéré
+
+    append_resp = client.post(
+        f"/game/{slug}/triggers/{obj_id}/append-action",
+        json={"after_id": leaf_id, "action": {"type": "dialogue", "dialogue": {"id": "d_1", "lines": []}}},
+    )
+    assert append_resp.status_code == 200
+
+
 def test_objects_catalog_lists_eligible_objects_with_thumbnails(client, tmp_game_slug_cleanup):
     slug, screen_id = _create_jeu2d_game(client, tmp_game_slug_cleanup)
     _add_personnage(client, slug, screen_id, role="pnj")
@@ -350,6 +439,10 @@ def test_triggers_route_is_isolated_like_other_game_routes(anon_client):
         assert resp.status_code == 403
         resp = anon_client.post("/game/un-projet-qui-nest-pas-le-sien/triggers/1/append-action", json={})
         assert resp.status_code == 403
+        resp = anon_client.delete("/game/un-projet-qui-nest-pas-le-sien/triggers/1/action/d_1")
+        assert resp.status_code == 403
+        resp = anon_client.post("/game/un-projet-qui-nest-pas-le-sien/triggers/1/action/d_1/move", json={"direction": "up"})
+        assert resp.status_code == 403
         resp = anon_client.get("/game/un-projet-qui-nest-pas-le-sien/triggers/objects-catalog")
         assert resp.status_code == 403
     finally: