test: fix CI stubs for profile_config; widen #1855 source window

CI Tests job (run 28525484615) failed one test per shard:
- Stubs for _resolve_compatible_session_model_state lacked profile_config
  (wakeup wiring spy, start_session_turn runtime adapter fixture).
- #1855 structural test used 6k char slice; resolver helper outgrew window.

Co-authored-by: b3nw <b3nw@users.noreply.github.com>

tests/test_issue1855_resolve_model_provider_fast_path.py

@@ -269,7 +269,12 @@ class TestFastPathSourceShape:
         """The fast-path return must come BEFORE the catalog lookup."""
         src = _read("api/routes.py")
         idx = src.find("def _resolve_compatible_session_model_state(")
-        body = src[idx:idx + 6000]
+        # Helper grew (profile_config, custom repair); 6k window no longer reaches
+        # the slow-path catalog call — use a bounded slice through the next def.
+        body = src[idx:idx + 12000]
+        next_def = body.find("\ndef ", 100)
+        if next_def != -1:
+            body = body[:next_def]
         fast_path_idx = body.find("if model and requested_provider:")
         catalog_idx = body.find("catalog = get_available_models()")
         assert fast_path_idx != -1 and catalog_idx != -1

tests/test_start_session_turn_runtime_adapter.py

@@ -50,7 +50,7 @@ def _stub_routes(monkeypatch):
     monkeypatch.setattr(
         routes_mod,
         "_resolve_compatible_session_model_state",
-        lambda model, provider, profile_provider=None, profile_default_model=None, prefer_cached_catalog=False: (model, provider, model),
+        lambda model, provider, **kwargs: (model, provider, model),
     )
 
     # 4. Block the per-session live-view fan-out (it pokes a real registry).

tests/test_wakeup_model_resolve_hang.py

@@ -123,13 +123,15 @@ def test_wakeup_resolve_passes_prefer_cached_catalog(monkeypatch):
     real = routes._resolve_compatible_session_model_state
 
     def _spy(model_id, model_provider=None, *, profile_provider=None,
-             profile_default_model=None, prefer_cached_catalog=False):
+             profile_default_model=None, profile_config=None,
+             prefer_cached_catalog=False, **kwargs):
         seen["prefer_cached_catalog"] = prefer_cached_catalog
         # The wakeup path now also threads the session's profile model defaults
         # through (greptile fix) so a brand-new session with an empty model
         # falls back to the profile default, not the global DEFAULT_MODEL.
         seen["profile_provider"] = profile_provider
         seen["profile_default_model"] = profile_default_model
+        seen["profile_config"] = profile_config
         return ("m", None, False)
 
     monkeypatch.setattr(