Verbose per-call LLM logging, raw request/response dumps, and end-of-log cost summary.

- [LLM] line per call: stage, model, prompt size, output size, cost, parsed item counts
- LLM_RAW_DUMP: full prompt/response JSON per call under outputs/<job>/llm_raw/
- Cost block at tail of job.log (per-stage, per-model, cached vs live)
- Agent mode: reset llm cost counters per job; review finalization now teed into job.log + dumps

backend/.env.example

@@ -48,6 +48,13 @@ REASON_CONCURRENCY=4
 APP_BASE_URL=https://conchecker.scoutitsystems.com
 # APP_BUILD is set by CI at image build time (sha-<short_sha>) - do not set manually.
 
+# LLM observability (job-log verbosity + raw request/response dumps)
+# LLM_VERBOSE: one line per LLM call in job.log (model, sizes, item counts, cost)
+# LLM_RAW_DUMP: full prompt+response per call in outputs/<job_id>/llm_raw/
+#   (base64 images excluded). Both default on; set false to quiet down.
+LLM_VERBOSE=true
+LLM_RAW_DUMP=true
+
 # Email notifications (optional). Leave SMTP_HOST blank to disable.
 # Examples:
 #   Gmail:  SMTP_HOST=smtp.gmail.com  SMTP_PORT=587  (use an App Password)