key-pool rotation: per-session OpenAI key assignment from OPENAI_KEY_01..10 (core/perfect_answer.py)

core/perfect_answer.py

@@ -24,7 +24,7 @@ in app.py shows a "preparing the discussion" status message during the wait.
 """
 
 import re
-from core.config_loader import client, MODEL, BASE_DIR, PERFECT_ANSWER_PROMPT
+from core.config_loader import client as _default_client, MODEL, BASE_DIR, PERFECT_ANSWER_PROMPT
 
 
 CASE_ANALYSIS_PATH = BASE_DIR / "data" / "case_analysis.md"
@@ -133,9 +133,10 @@ def _parse_artifacts(raw):
             "dominant_framework": dominant}
 
 
-def generate_session_artifacts(argument_text, *, reasoning="medium", verbosity="medium"):
+def generate_session_artifacts(argument_text, *, reasoning="medium", verbosity="medium", client=None):
     """Single blocking API call. Returns {"perfect_answer", "discussion_plan"}.
     Raises on API error."""
+    api = client if client is not None else _default_client
     case = CASE_ANALYSIS_PATH.read_text(encoding="utf-8")
     frameworks = FRAMEWORKS_PATH.read_text(encoding="utf-8")
 
@@ -146,7 +147,7 @@ def generate_session_artifacts(argument_text, *, reasoning="medium", verbosity="
     )
 
     def _call():
-        response = client.responses.create(
+        response = api.responses.create(
             model=MODEL,
             reasoning={"effort": reasoning},
             text={"verbosity": verbosity},