fix: correct max_tokens for Groq models

🤖 Generated with [Claude Code](https://claude.com/claude-code)

scripts/migrations/010_update_model_context_windows.sql

@@ -11,7 +11,7 @@ BEGIN
     -- LLaMA 3.1 8B Instant
     UPDATE model_configs
     SET context_window = 131072,
-        max_tokens = 131072,
+        max_tokens = 32000,
         updated_at = NOW()
     WHERE model_id = 'llama-3.1-8b-instant'
     AND (context_window IS NULL OR max_tokens IS NULL);

scripts/migrations/028_fix_groq_max_tokens.sql

@@ -0,0 +1,33 @@
+-- Migration 028: Fix Groq Model Max Tokens
+-- Corrects max_tokens for models that had incorrect values in test data
+
+DO $$
+DECLARE
+    updated_count INTEGER := 0;
+BEGIN
+    -- LLaMA 3.1 8B Instant: max_tokens should be 32000 (was incorrectly 131072)
+    UPDATE model_configs
+    SET max_tokens = 32000,
+        updated_at = NOW()
+    WHERE model_id = 'llama-3.1-8b-instant'
+    AND max_tokens != 32000;
+
+    GET DIAGNOSTICS updated_count = ROW_COUNT;
+    IF updated_count > 0 THEN
+        RAISE NOTICE 'Updated % records for llama-3.1-8b-instant max_tokens -> 32000', updated_count;
+    END IF;
+
+    -- LLaMA Guard 4 12B: max_tokens should be 1024 (was incorrectly 8192 in test data)
+    UPDATE model_configs
+    SET max_tokens = 1024,
+        updated_at = NOW()
+    WHERE model_id = 'meta-llama/llama-guard-4-12b'
+    AND max_tokens != 1024;
+
+    GET DIAGNOSTICS updated_count = ROW_COUNT;
+    IF updated_count > 0 THEN
+        RAISE NOTICE 'Updated % records for llama-guard-4-12b max_tokens -> 1024', updated_count;
+    END IF;
+
+    RAISE NOTICE 'Migration 028 complete: Groq max_tokens corrected';
+END $$;