chore(lint): enable unicorn/prefer-includes

[HAYDEN-OAI]

• I understand that this repository is auto-generated and my pull request may not be merged

Changes being requested

• Remove the unicorn/prefer-includes compatibility exception from oxlint.config.ts.
• Resolve the 2 existing handwritten-code diagnostics with focused, behavior-preserving cleanup.

Additional context & links

• Oxlint cleanup stack, part 51; stacked on chore(lint): enable unicorn/no-hex-escape #2129.
• Preserves generated-file exclusions and repository-specific import policy.

Validation

• pnpm lint
• pnpm exec tsc --pretty false
• pnpm exec vitest run --config vitest.config.mts --update=none

Stack

#2129
#2130 👈 this PR
#2131
#2132
#2133
#2134
#2135
#2136
#2137
#2138
#2139
#2140
#2141

[jbeckwith-oai]

Reviewed exact head 48f7bf2. The includes conversions preserve behavior for the string and object-identity collections involved, and the added refs type makes the boundary clearer. Exact-head CI is green.

[openai-sdks]

OkTest Summary

✅ 237/237 SDK tests passed in 10.108s for Node SDK PR #2130.

Test results — 42 files

Test	Result	Time
tests/chat-completions-complex-body.test.ts	✅ Passed	140ms
tests/chat-completions-create.test.ts	✅ Passed	242ms
tests/chat-completions-stream.test.ts	✅ Passed	209ms
tests/files-content-binary.test.ts	✅ Passed	146ms
tests/files-create-multipart.test.ts	✅ Passed	146ms
tests/files-list-pagination.test.ts	✅ Passed	142ms
tests/initialize-config.test.ts	✅ Passed	170ms
tests/instance-isolation.test.ts	✅ Passed	92ms
tests/models-list.test.ts	✅ Passed	131ms
tests/responses-background-lifecycle.test.ts	✅ Passed	222ms
tests/responses-body-method-errors.test.ts	✅ Passed	338ms
tests/responses-cancel-timeout.test.ts	✅ Passed	217ms
tests/responses-cancel.test.ts	✅ Passed	223ms
tests/responses-compact-retries.test.ts	✅ Passed	231ms
tests/responses-compact.test.ts	✅ Passed	213ms
tests/responses-create-advanced-stream.test.ts	✅ Passed	132ms
tests/responses-create-advanced.test.ts	✅ Passed	132ms
tests/responses-create-disconnect.test.ts	✅ Passed	1.093s
tests/responses-create-errors.test.ts	✅ Passed	188ms
tests/responses-create-malformed-api-responses.test.ts	✅ Passed	139ms
tests/responses-create-retries.test.ts	✅ Passed	299ms
tests/responses-create-stream-failures.test.ts	✅ Passed	185ms
tests/responses-create-stream-timeout.test.ts	✅ Passed	2.15s
tests/responses-create-stream-wire.test.ts	✅ Passed	2.557s
tests/responses-create-stream.test.ts	✅ Passed	66ms
tests/responses-create-terminal-states.test.ts	✅ Passed	206ms
tests/responses-create-timeout.test.ts	✅ Passed	193ms
tests/responses-create.test.ts	✅ Passed	183ms
tests/responses-delete.test.ts	✅ Passed	204ms
tests/responses-input-items-errors.test.ts	✅ Passed	257ms
tests/responses-input-items-list.test.ts	✅ Passed	177ms
tests/responses-input-items-options.test.ts	✅ Passed	111ms
tests/responses-input-tokens-count-timeout.test.ts	✅ Passed	222ms
tests/responses-input-tokens-count.test.ts	✅ Passed	218ms
tests/responses-malformed-inputs.test.ts	✅ Passed	2.168s
tests/responses-not-found-errors.test.ts	✅ Passed	247ms
tests/responses-parse.test.ts	✅ Passed	187ms
tests/responses-retrieve-retries.test.ts	✅ Passed	241ms
tests/responses-retrieve.test.ts	✅ Passed	212ms
tests/responses-stored-method-errors.test.ts	✅ Passed	524ms
tests/retry-behavior.test.ts	✅ Passed	2.921s
tests/sdk-error-shape.test.ts	✅ Passed	269ms

View OkTest run #31223668294

_{SDK merge (bebb8d3fccc1) · head (48f7bf2561f8) · base (d395852e9512) · OkTest (91635c6a2723)}