refactor(mcp): replace hand-rolled JWT with jose library#86
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Replace custom HMAC-SHA256 signJwt/verifyJwt helpers in provider.ts with jose (SignJWT/jwtVerify), delegating iss/aud validation to the library. Also includes redirect_uri validation in loginHandler and a fail-fast guard requiring MCP_AUTH_ENABLED or MCP_ALLOW_UNAUTHENTICATED for HTTP transport. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Replace custom HMAC-SHA256 signJwt/verifyJwt helpers in provider.ts with jose (SignJWT/jwtVerify), delegating iss/aud validation to the library. Also includes redirect_uri validation in loginHandler and a fail-fast guard requiring MCP_AUTH_ENABLED or MCP_ALLOW_UNAUTHENTICATED for HTTP transport.
Co-Authored-By: Claude Sonnet 4.6 noreply@anthropic.com
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