Use different seeds for retries

copienator/commands/correction.py

@@ -15,12 +15,13 @@ from collections.abc import Sequence
 from pathlib import Path
 
 from google import genai
+from google.genai import types
 
 from copienator import configuration as config
 from copienator.commands import grouping
 from copienator.answer_origins import save_origins
 from copienator import prompting
-from copienator.gemini_config import thinking_config
+from copienator.gemini_config import fresh_seed, thinking_config
 from copienator import configuration as settings
 from copienator.feedback_boxes import valid_feedback_box
 from copienator.latex_json import repair_latex_json
@@ -274,10 +275,19 @@ def call_gemini_with_retries(model_id, contents, config,
     """Handles requests to Gemini with a 1min and 5min retry mechanism, and quota fallback."""
     global pro_quota_exhausted
     delays = [60, 300]
+    request_seed = None
+    # Own the retries here so the SDK cannot silently resend a fixed seed.
+    http_options = config.http_options or types.HttpOptions()
+    config = config.model_copy(update={"http_options": http_options.model_copy(
+        update={"retry_options": types.HttpRetryOptions(attempts=1)}
+    )})
 
     for attempt in range(3):
         if stop_requested.is_set():
             raise CorrectionStopRequested
+        request_seed = fresh_seed(request_seed)
+        config = config.model_copy(update={"seed": request_seed})
+        tprint(f"\tGemini attempt {attempt + 1}/3: seed={request_seed}")
         # Switch to fallback immediately if quota was exhausted by another thread
         if model_id == MODEL_ID_pro and pro_quota_exhausted and fallback_model_id:
             model_id = fallback_model_id