[KochC]

Problem

test/safe-teardown.test.js was the only test suite that did not scrub OPENCODE_LLM_PROXY_* variables from the environment before each test.

With a developer or CI shell that exports a token (OPENCODE_LLM_PROXY_TOKEN), every request in the suite got a 401, so seven tests failed for reasons unrelated to the code under test:

not ok 163 - non-streaming success deletes the throwaway session
not ok 164 - non-streaming client abort does NOT delete the session (FOREIGN KEY race)
not ok 165 - keepSessions=true never deletes, even on success
not ok 170 - hung session.delete does not block the response past the delete timeout
not ok 171 - streaming success still deletes the throwaway session
not ok 172 - streaming client abort does NOT delete the session (FOREIGN KEY race)
not ok 173 - streaming session.error does NOT delete the session

Fix

Add the same beforeEach scrub already used by index.test.js, test/http-integration.test.js, test/stream-conformance.test.js, and test/tool-payload-fidelity.test.js.

The two tests that need specific values (OPENCODE_LLM_PROXY_KEEP_SESSIONS, OPENCODE_LLM_PROXY_DELETE_TIMEOUT_MS) set them inside their own bodies, i.e. after the hook runs, so they are unaffected.

Verification

• npm test with a token exported in the shell: 326 tests, 326 pass, 0 fail (previously 7 fail, 319 pass).
• npm run lint clean.
• No production code changed.