fire-planner: reset bulk ingest toggle after successful run

Job completed: 1,060 examples inserted across 10 FIRE subreddits
(1,080 total), 20/24 sub-runs succeeded. Toggle reset to false.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

stacks/fire-planner/terragrunt.hcl

@@ -27,7 +27,7 @@ inputs = {
   image_tag = "latest"
 
   # Bulk ingest toggle — flip to true once, apply, monitor job, then reset to false.
-  run_examples_bulk_ingest = true
+  run_examples_bulk_ingest = false
   # qwen3-8b: GPU has ~10.7 GB free (immich-ml using ~4 GB of 15 GB total).
   examples_llm_model = "qwen3-8b"
 }