Charlie Marsh a8bca62978 Reduce remote plugin catalog cache probing overhead (#57258) ...

## Why

Cache presence and freshness checks deserialize full plugin records even when callers only need to decide whether a cached catalog is available.

## What changed

- Probe cache availability without deserializing plugin records, while still requiring a valid catalog envelope and a `plugins` array.
- Let `PreferFreshCache` reject stale catalogs from a 256-byte prefix when the header provides enough information; fall back to a full read otherwise.
- Limit discovery cache probes to the user and workspace scopes that need them, skipping the global cache probe.
- Serialize cached plugin slices directly without cloning them.

## Testing

Add coverage for malformed cache headers and payloads, reordered fields, stale-prefix rejection, and deferring plugin-record validation until a full catalog load.

GitOrigin-RevId: 1e5ec95917f38c84bba30dbd3bb8c2f91cc7e3a8

2026-10-26 21:13:03 +00:00

..

src

Reduce remote plugin catalog cache probing overhead (#57258)

2026-10-26 21:13:03 +00:00

BUILD.bazel

build: run buildifier from just fmt (#28125)

2026-06-13 21:43:39 -07:00

Cargo.toml

Bound remote installed-plugin inventory pagination (#55946)

2026-10-21 17:28:24 +00:00