[xiehuanyi]

Exact .all.deep.keys matching can reuse one actual Map or Set key for multiple structurally equal expected keys. For example, keys {id: 1} and {id: 2} currently pass an expectation of [{id: 1}, {id: 1}], leaving the second actual key unchecked.

Match against a shallow copy of the actual keys and consume each match for exact comparisons. Keep .include and .any behavior. Add Map and Set regressions, negation checks, valid repeated deep-equal keys, and inclusion/any controls.

Validation:

• Both new collection regressions fail on unchanged main.
• npm run test-node: 514 tests pass.
• Chromium browser runner: 513 tests across 9 files pass.
• Build, normal ESLint/Prettier checks, and git diff --check pass.
• Optional lint:types reports the same 601 existing diagnostics on main and the patched source, with identical diagnostic multisets. That script is not part of the current CI workflows.

Discovery and implementation: automated OpenAI gpt-6.1-sol source review with xhigh reasoning; no production incident is claimed.

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