## Code Review

### expert_build/prompts.py:SUMMARIZE_CODE
VERDICT: PASS
CORRECTNESS: VALID
SPEC_COMPLIANCE: N/A
ISSUE_COMPLIANCE: N/A
BELIEF_COMPLIANCE: N/A
TEST_COVERAGE: UNTESTED
INTEGRATION: WIRED
REASONING: Well-structured prompt template with clear sections. Uses `{content}` placeholder consistent with the existing `SUMMARIZE` template. The instruction to produce a descriptive title (e.g., "CLI Entry Point", "PDF Chunker") aligns with the commit message about producing descriptive titles instead of generic "Overview". No issues.
---

### expert_build/summarize.py:cmd_summarize (glob expansion)
VERDICT: PASS
CORRECTNESS: VALID
SPEC_COMPLIANCE: N/A
ISSUE_COMPLIANCE: N/A
BELIEF_COMPLIANCE: N/A
TEST_COVERAGE: UNTESTED
INTEGRATION: WIRED
REASONING: The glob expansion from `*.md` to `[*.md, *.py]` is correct. Sorting by `p.name` is necessary now that two glob results are merged (the previous single-glob `sorted()` was already sorted by path, but merging two lists requires an explicit key). Error message updated to match.
---

### expert_build/summarize.py:cmd_summarize (truncation warning)
VERDICT: CONCERN
CORRECTNESS: QUESTIONABLE
SPEC_COMPLIANCE: N/A
ISSUE_COMPLIANCE: N/A
BELIEF_COMPLIANCE: N/A
TEST_COVERAGE: UNTESTED
INTEGRATION: WIRED
REASONING: The PDF-specific truncation warning references `expert-build chunk-pdf` which is correct per the CLI wiring in `cli.py:108`. However, the `.pdf` branch will never trigger — the glob only collects `*.md` and `*.py` files, so `source_path.suffix == ".pdf"` is dead code. If PDF support is intended for a future change, this is premature; if PDFs were previously supported via a different path (e.g., after conversion to `.md`), the suffix check is wrong. Either way, unreachable code in a conditional is a minor correctness concern.
---

### expert_build/summarize.py:cmd_summarize (template selection)
VERDICT: PASS
CORRECTNESS: VALID
SPEC_COMPLIANCE: N/A
ISSUE_COMPLIANCE: N/A
BELIEF_COMPLIANCE: N/A
TEST_COVERAGE: UNTESTED
INTEGRATION: WIRED
REASONING: `SUMMARIZE_CODE if source_path.suffix == ".py" else SUMMARIZE` is clean and correct. Both templates use the same `{content}` placeholder so the `.format(content=content)` call works for either. The import of `SUMMARIZE_CODE` is properly added.
---

### Overall: test coverage
VERDICT: CONCERN
CORRECTNESS: VALID
SPEC_COMPLIANCE: N/A
ISSUE_COMPLIANCE: N/A
BELIEF_COMPLIANCE: N/A
TEST_COVERAGE: UNTESTED
INTEGRATION: WIRED
REASONING: The observation confirms `test_count: 0` for `summarize.py`. No tests exist for any of the changed behavior — template selection, glob expansion, or truncation warnings. This is a CLI-driven function with subprocess calls and LLM invocations, making it harder to test, but the template selection logic and glob merging could be tested with modest mocking.
---

## Summary

Two concerns:

1. **Dead code**: The `.pdf` suffix check in the truncation warning (lines 76-78) can never execute because the glob only collects `*.md` and `*.py` files. Remove the PDF branch or add `*.pdf` to the glob if PDF inputs are expected.

2. **No tests**: `cmd_summarize` has zero test coverage. The new template-selection and glob-merging logic would benefit from at least a unit test.

The rest of the change is clean and well-integrated.

### SELF_REVIEW
LIMITATIONS: Could not see the `SUMMARIZE` template body (observation returned "No function found") to compare structure with `SUMMARIZE_CODE`. Relied on the shared `{content}` placeholder being consistent based on the working `.format()` call.
---

### FEATURE_REQUESTS
- Include string constant bodies (not just functions) in observations when they're referenced in the diff
- Flag dead code branches automatically (e.g., suffix checks that can't match any globbed extension)
---
