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perf(compile): cache file walk and fix placement for narrow patterns #871

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perf(compile): cache file walk and fix placement for narrow patterns #871

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0f9973b
perf(discovery): prune excluded subtrees during traversal
Apr 23, 2026
22fe5d7
perf(compile): cache file walk and fix placement for narrow patterns
Apr 23, 2026
99cd6a6
Fixed non-ASCII characters in comment
Roozi489 Apr 23, 2026
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5 changes: 5 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -8,6 +8,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

## [Unreleased]

### Changed

- `find_primitive_files()` now uses `os.walk` with early directory pruning instead of `glob.glob(recursive=True)`, so `compilation.exclude` patterns prevent traversal into expensive subtrees (e.g. large game-engine asset trees). Adds shared `DEFAULT_SKIP_DIRS` constant used by both discovery and compilation.
- `ContextOptimizer` now builds a `_directory_files_cache` during `_analyze_project_structure()` and uses it for `_cached_glob`, `_find_matching_directories`, and `_directory_matches_pattern`, eliminating repeated `os.walk` / `iterdir()` calls. Directory pruning is moved before the depth check so excluded subtrees are never descended into. Stats loop rewritten from O(N^2) per-directory inheritance walk to O(N) with pre-computed pattern sets. Low-distribution placement now uses `_find_minimal_coverage_placement` directly instead of a pollution-scored candidate search that incorrectly biased toward the project root.
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Copilot AI Apr 23, 2026

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The new changelog bullets under ## [Unreleased] do not follow the repo format rules: each entry should end with a PR reference like (#<number>), and be one logical change per line. Please add the appropriate PR number(s) to these entries (and consider splitting the long ContextOptimizer bullet if needed).

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### Added

- New `enterprise/governance-guide.md` documentation page: flagship governance reference for CISO / VPE / Platform Tech Lead audiences, covering enforcement points, bypass contract, failure semantics, air-gapped operation, rollout playbook, and known gaps. Trims duplicated content in `governance.md`, `apm-policy.md`, and `integrations/github-rulesets.md`. Adds `templates/apm-policy-starter.yml`. (#851)
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