chore(dgx): snapshot consolidation WIP pour transfert poc DGX

Regroupe le WIP non committé requis pour le clone/runtime DGX (Option A) :
- api_stream.py : préflight replay + smoke santé modèles + handler 403 WP-B
- de-hardcode VLM : vlm_config, gpu/*, vram_orchestrator, ollama_manager
- stream_processor, semantic_matcher, agent_chat (app/planner/intent)
- workflows.db (acquis ; le transfert artifacts le mettra à jour + rewrite chemins)
- docs : plans DGX, benchmarks VLM/grounders, recherche SOTA, coordination 8 juin

Snapshot destiné à la branche poc-dgx poussée sur Gitea pour cloner le DGX.
Scan anti-secret : clean. graphify (repo embarqué) exclu.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

tests/unit/test_workflow_components.py

@@ -196,6 +196,22 @@ class TestSemanticMatcher:
         
         workflows = matcher.get_all_workflows()
         assert len(workflows) == 2
+
+    def test_load_workflows_recursively(self, temp_workflows_dir):
+        """Les workflows appris dans des sous-dossiers machine sont visibles."""
+        machine_dir = temp_workflows_dir / "DESKTOP-TEST_windows"
+        machine_dir.mkdir()
+        nested = {
+            "name": "Bloc-notes Enregistrer",
+            "description": "Workflow appris dans un sous-dossier machine",
+            "tags": ["bloc-notes"],
+        }
+        with open(machine_dir / "notepad_save.json", "w") as f:
+            json.dump(nested, f)
+
+        matcher = SemanticMatcher(str(temp_workflows_dir), use_llm=False)
+
+        assert matcher.get_workflow("notepad_save") is not None
     
     def test_find_workflow_exact_match(self, temp_workflows_dir):
         """Test matching exact."""
@@ -221,6 +237,52 @@ class TestSemanticMatcher:
         match = matcher.find_workflow("créer une facture")
         assert match is not None
         assert "Facturation" in match.workflow_name
+
+    def test_find_learned_save_workflow_from_node_text(self, temp_workflows_dir):
+        """Les textes appris dans les nodes alimentent le matching sémantique."""
+        workflow = {
+            "name": "Tâche Bloc-notes",
+            "description": "Auto-generated workflow",
+            "nodes": [
+                {
+                    "name": "State Pattern 0",
+                    "template": {
+                        "window": {
+                            "title_contains": "Sans titre – Bloc-notes",
+                        }
+                    },
+                },
+                {
+                    "name": "State Pattern 1",
+                    "template": {
+                        "window": {
+                            "title_contains": "Enregistrer sous",
+                        },
+                        "text": {
+                            "required_texts": ["Nom du fichier", "Enregistrer"],
+                        },
+                    },
+                },
+            ],
+            "edges": [
+                {
+                    "action": {
+                        "type": "click",
+                        "target_text": "Enregistrer",
+                    },
+                    "expected_window_title": "Enregistrer sous",
+                }
+            ],
+        }
+        with open(temp_workflows_dir / "notepad_save_as.json", "w") as f:
+            json.dump(workflow, f)
+
+        matcher = SemanticMatcher(str(temp_workflows_dir), use_llm=False)
+
+        match = matcher.find_workflow("sauvegarde le fichier notepad", min_confidence=0.2)
+        assert match is not None
+        assert match.workflow_id == "notepad_save_as"
+        assert "enregistrer" in matcher.get_workflow("notepad_save_as").keywords
     
     def test_extract_params(self, temp_workflows_dir):
         """Test extraction de paramètres."""