e2e: hermetic ADK cassettes, matchFileSnapshot migration, seinfeld gzip fix#1966

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Stephen Belanger (Qard) wants to merge 11 commits intomainfrom

t3code/e2e-followup

Commits on May 9, 2026

fix(seinfeld): strip content-encoding headers from replayed responses

authored and
Stephen Belanger (Qard)
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chore(e2e): revert drain delay to 2000ms, remove debug onRecord callback

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Stephen Belanger (Qard)
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feat(e2e): make google-adk-instrumentation scenario hermetic

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Stephen Belanger (Qard)
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refactor(e2e): replace toMatchFileSnapshot with matchFileSnapshot helper

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Stephen Belanger (Qard)
committed
feat(e2e): split canary snapshots, fix COPILOT_API_KEY in Docker runner

Stephen Belanger (Qard)
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Claude (claude)
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fix(seinfeld): add omitRequestHeaders option and x-goog-api-key to auth headers

Stephen Belanger (Qard)
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Claude (claude)
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chore(e2e): scrub request headers from cassettes, update key ordering

Stephen Belanger (Qard)
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Claude (claude)
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chore: fix formatting in assertions and seinfeld/msw.ts

Stephen Belanger (Qard)
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Claude (claude)
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chore(e2e): add cassettes and snapshots for additional scenarios

Stephen Belanger (Qard)
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Claude (claude)
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chore(e2e): remove stub/incomplete cassettes (cohere, mistral, google-genai)

Stephen Belanger (Qard)
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Claude (claude)
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fix(e2e): always write canary snapshots without comparing

Stephen Belanger (Qard)
and
Claude (claude)
committed