Support Assistent persona packs via git and local sync.

Replace assistent-personas overlay seed with assistent-extensions SFTP and an assistent: section in extensions.yaml so personalities install like other extensions without private URLs in the public repo.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/test_debug_api.py

@@ -221,7 +221,7 @@ def test_chat_eval_mocked_http(monkeypatch, tmp_path):
         if url.endswith("/API/AssistentGetConfig"):
             return True, {
                 "success": True,
-                "persona": "leonid",
+                "persona": "neutral",
                 "exact": {
                     "profiles": {"turbo": {"steps": 8, "cfg": 1, "sigma_shift": 1.15}}
                 },
@@ -245,14 +245,14 @@ def test_chat_eval_mocked_http(monkeypatch, tmp_path):
     out = debug_assistent.run_assistent_chat_eval(
         cfg,
         message="какой checkpoint?",
-        persona="leonid",
+        persona="neutral",
         timeout=60,
     )
     assert out["ok"] is True
     assert out["via"] == "local"
     assert out["model"] == "qwen3-vl:8b"
     assert out["preferred"] == "qwen3-vl:8b"
-    assert out["persona"] == "leonid"
+    assert out["persona"] == "neutral"
     assert out["patch"]["steps"] == 4
     assert out["patch"]["cfg"] == 1
     assert out["patch"]["aspect"] == "3:4"
@@ -317,7 +317,7 @@ def test_assistent_compact_and_roles_local(monkeypatch, tmp_path):
             ],
             "overlay": {
                 "exists": True,
-                "persona_ids": ["leonid"],
+                "persona_ids": ["neutral"],
                 "roles_present": True,
                 "roles": {
                     "chat": ["qwen3-vl:8b"],