chore: update OpenAPI spec from monorepo (#884)

Co-authored-by: OpenRouter SDK Bot <sdk-bot@openrouter.ai>

Author: openrouter-docs-sync[bot]

.speakeasy/in.openapi.yaml

@@ -28157,7 +28157,7 @@ components:
         total_tokens: 35
     VaultSecret:
       additionalProperties: false
-      description: 'Metadata for one stored secret. The secret value is never returned. `fingerprint` is a keyed SHA-256 digest of the value: equal fingerprints within one scope mean equal values, but a workspace secret and its intern copy carry different fingerprints. `hosts` and `fingerprint` are `null` only for legacy rows written before host binding was required; storing the secret again assigns hosts.'
+      description: 'Metadata for one stored secret. The secret value is never returned. `fingerprint` is an HMAC-SHA-256 of the value keyed with that vault''s own data key, so it is comparable only within one vault: equal fingerprints in one vault mean equal values, and rewriting the same value keeps its fingerprint. The same value stored in two vaults (for example a workspace secret and its intern copy) carries different fingerprints, so comparing fingerprints across vaults cannot show that a copy matches or that a rotation propagated. `hosts` and `fingerprint` are `null` only for legacy rows written before host binding was required; storing the secret again assigns hosts.'
       example:
         created_at: '2026-09-15T17:44:00.000Z'
         fingerprint: 'sha256:9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08'