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* feat(auth): make auth token TTL configurable via AUTH_TOKEN_TTL env var Add AUTH_TOKEN_TTL environment variable (in seconds) to override the hardcoded 30-day auth token lifetime. Self-hosted deployments on trusted networks can set a longer value to avoid frequent magic-link re-authentication. The value is read once at startup and cached. Invalid or missing values fall back to the 30-day default with a warning log. Closes #2685 * refactor(auth): extract parseAuthTokenTTL for testability Address review feedback: extract pure parse function from sync.Once wrapper so the parsing logic can be unit-tested independently. Add TestParseAuthTokenTTL with table-driven cases. Co-Authored-By: Claude Opus 4 (1M context) <noreply@anthropic.com> * refactor(auth): accept Go duration strings + hoist shared TTL in SetAuthCookies Address nice-to-have review feedback from Bohan-J: - parseAuthTokenTTL now tries time.ParseDuration first (e.g. '8760h'), falling back to ParseInt for integer seconds - Warn on unreasonable values (>10 years) but still accept them - Hoist AuthTokenTTL() and time.Now() in SetAuthCookies so both cookies share the exact same expiry - Add security trade-off note in .env.example - Add 5 new test cases for duration strings Co-Authored-By: Claude Opus 4 (1M context) <noreply@anthropic.com> Signed-off-by: kagura-agent <kagura.agent.ai@gmail.com> * fix: use AuthTokenTTL() in CloudFront middleware, guard ParseInt overflow Address review feedback from Bohan-J (round 2): 1. CloudFront refresh middleware (cloudfront.go:21) was hardcoding 30*24*time.Hour instead of using auth.AuthTokenTTL(). Now calls AuthTokenTTL() so the middleware respects AUTH_TOKEN_TTL env var. 2. parseAuthTokenTTL integer-seconds branch: very large values like 9999999999 would silently overflow int64 when multiplied by time.Second. Added overflow guard comparing against math.MaxInt64/int64(time.Second) before the multiplication. 3. Updated AuthTokenTTL() doc comment to reflect that it accepts Go duration strings or integer seconds (not just seconds). 4. Added middleware test (cloudfront_test.go) verifying short AUTH_TOKEN_TTL produces short cookie expiry, not 30-day hardcode. Also covers nil signer and existing-cookie-skip cases. 5. Added integer overflow test case to cookie_test.go. * style: run gofmt on cookie.go and cookie_test.go --------- Signed-off-by: kagura-agent <kagura.agent.ai@gmail.com> Co-authored-by: Claude Opus 4 (1M context) <noreply@anthropic.com>