fix(tools): repair openai middleware drift

[vorflux]

Fixes OpenAI middleware drift so the @supermemory/tools/openai wrapper supports explicit Supermemory configuration, fails open on memory retrieval failures, and preserves query-mode search hits.

Changes

• Add apiKey support to OpenAI middleware and propagate custom baseUrl through profile/conversation calls.
• Change OpenAI middleware addMemory default to never, update README docs, and bump @supermemory/tools to 2.1.2.
• Fail open for Chat Completions and Responses API calls when Supermemory retrieval fails.
• Preserve query-mode search results even when they duplicate profile memories.
• Add packages/tools/CHANGELOG.md and focused OpenAI middleware regression tests.

Testing

• Passed: cd packages/tools && npx vitest run test/openai-middleware.unit.test.ts --testTimeout 100000 — 6 tests passed.
• Passed: temporary live API smoke with configured SUPERMEMORY_API_KEY against /v4/profile and /v4/conversations through the OpenAI middleware — 1 test passed; temporary file removed.
• Passed: cd packages/tools && cp package.json /tmp/supermemory-tools-package.json && rm -rf /tmp/openai-tools-build && npx tsdown src/openai/index.ts --format esm --dts false --out-dir /tmp/openai-tools-build; status=$?; cp /tmp/supermemory-tools-package.json package.json; exit $status — build completed; existing tsdown config warning about define remains.
• Passed: git diff --check.
• Note: npx tsc --noEmit remains blocked by existing unrelated package/test type errors, including src/openai/tools.ts(336,5) SearchResults mismatch.

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Session Details

• Session: View Session
• Requested by: supermemory
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