[aft-alfonso]

Accepted agent delivery; branch-keyed search descriptor included.

---

Summary by cubic

Cuts redundant metadata probes during view disk-limit enforcement by caching sizes of immutable v2 generation artifacts between passes, while keeping mutable SQLite files and markers freshly measured.

• Immutable manifest-*, trigram-*, and derived-* sizes are reused across passes; SQLite files, pins, and markers are still measured each pass.
• The cache invalidates on directory identity change (device, inode, mode, timestamps) plus a six-hour full reconciliation.
• Project membership admission now skips metadata probes of excluded paths and non-regular files but keeps identical walker results, verified by old/new parity and lstat-count tests.
• View-size caches live on the registry and drop with its last handle; new tests cover byte parity through changes and reconcile, eviction decisions, and cache lifetime.

^{Written for commit f234366. Summary will update on new commits.}

Confidence Score: 5/5

The PR appears safe to merge, with a non-blocking test isolation issue.

Findings

1.  Global ignores break fixture tests ▶

Summary

This PR reduces repeated file metadata checks during disk-limit enforcement and project walks.

• View disk checks reuse sizes for unchanged generation files.
• Project walks skip metadata checks they do not need.

Both earlier, unnumbered threads were manually resolved without explanation. The current code addresses their original concerns: caches follow the registry's lifetime, and checkout-wide measurements no longer make exact assertions.

Diagram

%%{init: {'theme': 'neutral'}}%%
flowchart TD
  A["Measure family"] --> B["Take registry-owned caches"]
  B --> C{"Directory changed or refresh due?"}
  C -->|Yes| D["Clear cached sizes"]
  C -->|No| E["Walk view directory"]
  D --> E
  E --> F["Reuse published artifact sizes"]
  E --> G["Measure mutable and uncached files"]
  F --> H["Check directory again"]
  G --> H
  H --> I["Keep only complete, stable cache entries"]
  I --> J["Return caches to registry"]
  J --> K["Apply disk budget"]

Loading

_{Reviews (2) · Last reviewed commit: "Gate Unix-only membership test helpers t..." · Reviewed by Greptile}