# Review by Linus Torvalds (Round 2)

## Review Complete — Linus Torvalds, Round 1

**VERDICT: approve** ✅

The code is clean, boring, and correct — which is exactly what you want. Here's the summary:

### What's right
- **Data structures are correct.** `FileSymbols` → `Symbol` with recursive children. No over-engineered visitor patterns, no abstract base classes, just plain dataclasses.
- **Linear pipeline**, no hidden state: walk files → parse structure → format text → rank → truncate. Each function takes clear inputs, produces clear outputs.
- **Follows every existing convention** in the codebase — config parsing, prompt injection, CLI commands, test patterns — to the letter.
- **92+ real integration tests** that create actual git repos and verify actual output, not mock theater.
- **Zero new dependencies** — stdlib only (ast, re, subprocess, pathlib).
- **Defensive error handling** everywhere: `try/except` around `generate_repo_map` in `_run_pipeline` means a map bug can never crash a pipeline run.

### Non-blocking findings
1. **Redundant inline import** in `run_ceo()` — module-level import already covers it (cosmetic)
2. **`type(repo_map_config)(...)`** in cli.py should be `dataclasses.replace()` (style)
3. **Greedy truncation** leaves ~5-10% budget slack on pathological inputs (accepted for V1)

### Test results
- **655 tests pass**, zero failures, zero regressions

Review saved to `cOS_reviews/reviews/linus_torvalds/20260331_round1_build_a_repomap_module.md`.