[jdalton]

Summary

Expose numeric CACHE_LIMIT and CACHE_BYTES options through configure() in nwsapi 2.x.

• Preserve the defaults of 1,000 entries and 2MiB per compiled-plan cache.
• Accept nonnegative safe integers. Zero disables the applicable cache retention.
• Validate numeric options before changing configuration and read accessor values once.
• Clear and resize existing caches immediately when either budget changes.
• Preserve Boolean options and the existing LRU eviction policy.
• Document how a host can opt into larger bounded caches for a large stylesheet.

Related to #242. This is a mitigation when a stylesheet fits the configured bounds. It does not resolve LRU thrashing for scans larger than those bounds. The V3 admission-policy change is intentionally outside this PR.

Validation

• 63 tests passed: the new cache configuration tests and existing fast-path integration tests.
• Repeated with the branch's pinned jsdom 26.1.0 dependency, also 63 passed.
• The 2,300 complex-selector reproduction retains its warmed selectors with 8,192 entries and an 8MiB budget.
• Changed cache/configuration functions parse as ES5.
• git diff --check passed.

No release or merge is included.

[dperini]

@davidwilder
please check that this commit covers and fixes your needs.

@jdalton you are making the difference ... awesome.