## Summary
- Removes unreachable dead code in `verifyJwtToken` — a legacy API key
verification block where the condition (`!payload.type && type ===
API_KEY`) was logically impossible. Also removes the now-unused
`isLegacyApiKey` parameter and `generateAppSecretLegacy` method.
- Adds explicit token type validation after JWT decode in
`verifyLoginToken`, `verifyRefreshToken`, and `verifyTransientToken`.
Each function now rejects tokens whose `type` field doesn't match what's
expected (defense-in-depth — the HMAC secret already binds the type, but
this makes the contract explicit).
## Test plan
- [x] Updated existing specs for login-token, refresh-token, renew-token
services — all 16 tests passing
- [x] Lint clean
Made with [Cursor](https://cursor.com)
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Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: claude[bot] <41898282+claude[bot]@users.noreply.github.com>
Félix Malfait
40d7e740ef