fix: prevent AI coach chat replies from truncating mid-sentence

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

manual_trading_hub/hub_ai/client.py

@@ -9,7 +9,7 @@ _REPO_ROOT = Path(__file__).resolve().parents[2]
 if str(_REPO_ROOT) not in sys.path:
     sys.path.insert(0, str(_REPO_ROOT))
 
-from ai_client import ai_generate, ai_provider_label  # noqa: E402
+from ai_client import ai_generate, ai_generate_chat, ai_provider_label  # noqa: E402
 
 
 def model_label() -> str:
@@ -23,11 +23,20 @@ def generate_text(
     temperature: float,
     images_b64: Optional[Sequence[str]] = None,
     max_tokens: int | None = None,
+    max_continuations: int = 3,
 ) -> str:
+    if max_tokens is not None and max_tokens > 0:
+        return ai_generate_chat(
+            system=system,
+            user=user,
+            temperature=temperature,
+            images_b64=images_b64,
+            max_tokens=int(max_tokens),
+            max_continuations=max_continuations,
+        )
     prompt = f"{system.strip()}\n\n---\n\n{user.strip()}"
     return ai_generate(
         prompt,
         temperature=temperature,
         images_b64=images_b64,
-        max_tokens=max_tokens,
     )