Implement Admin UI to disable AI components

drb-c2-core/app/internal/vocabulary_learner.py

@@ -243,6 +243,7 @@ def build_gpt_vocab_block(vocabulary: list[str]) -> str:
 # ─────────────────────────────────────────────────────────────────────────────
 
 async def vocabulary_induction_loop() -> None:
+    from app.internal.feature_flags import get_flags
     interval = settings.vocabulary_induction_interval_hours * 3600
     logger.info(
         f"Vocabulary induction loop started — "
@@ -252,7 +253,11 @@ async def vocabulary_induction_loop() -> None:
     while True:
         await asyncio.sleep(interval)
         try:
-            await _run_induction_pass()
+            flags = await get_flags()
+            if flags["vocabulary_learning_enabled"]:
+                await _run_induction_pass()
+            else:
+                logger.info("Vocabulary learning disabled — skipping induction pass")
         except Exception as e:
             logger.error(f"Vocabulary induction pass failed: {e}")