feat: replay E2E fonctionnel — 25/25 actions, 0 retries, SomEngine via serveur

Validé sur PC Windows (DESKTOP-58D5CAC, 2560x1600) :
- 8 clics résolus visuellement (1 anchor_template, 1 som_text_match, 6 som_vlm)
- Score moyen 0.75, temps moyen 1.6s
- Texte tapé correctement (bonjour, test word, date, email)
- 0 retries, 2 actions non vérifiées (OK)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

server/data/training/.processing_queue.json

@@ -0,0 +1,11 @@
+[
+  {
+    "session_id": "sess_20260105T195912_49cd3470",
+    "base_path": "data/training",
+    "status": "completed",
+    "added_at": "2026-01-05T19:59:19.305305",
+    "attempts": 0,
+    "last_error": null,
+    "updated_at": "2026-01-05T19:59:27.152464"
+  }
+]

server/data/training/sessions/2026-01-05/session_sess_20260105T195912_49cd3470.json

@@ -0,0 +1,51 @@
+{
+  "schema_version": "rawsession_v1",
+  "session_id": "sess_20260105T195912_49cd3470",
+  "agent_version": "0.1.0",
+  "environment": {
+    "platform": "linux",
+    "hostname": "test_host",
+    "screen": {
+      "primary_resolution": [
+        1920,
+        1080
+      ],
+      "display_scale": 1.0
+    }
+  },
+  "user": {
+    "id": "test_upload",
+    "label": "test_upload"
+  },
+  "context": {
+    "customer": "",
+    "training_label": "",
+    "notes": ""
+  },
+  "started_at": "2026-01-05T18:59:12+00:00",
+  "ended_at": null,
+  "events": [
+    {
+      "t": 5.349982529878616e-06,
+      "type": "mouse_click",
+      "window": {
+        "title": "Test Window",
+        "app_name": "Test App"
+      },
+      "button": "left",
+      "pos": [
+        100,
+        200
+      ],
+      "keys": null,
+      "idle_ms": null,
+      "scroll_delta": null
+    }
+  ],
+  "screenshots": [],
+  "_metadata": {
+    "saved_at": "2026-01-05T19:59:19.305150",
+    "schema_version": "rawsession_v1",
+    "session_id": "sess_20260105T195912_49cd3470"
+  }
+}

server/data/training/sessions/test_session_final/test.json

@@ -0,0 +1 @@
+{"test": "data"}