Add request validation for wallet, community, and resource inputs

[Lakes41]

The API route schemas currently accept wallet, community, and resource values as basic strings. Add stronger validation so malformed wallet addresses, empty community IDs, and empty resource IDs are rejected before reaching the service layer.

Suggested tasks

• Add reusable validators for wallet addresses, community IDs, and resource IDs
• Validate GET /v1/memberships/:wallet
• Validate GET /v1/members/:wallet
• Validate POST /v1/access/check
• Validate GET /v1/communities/:communityId/members
• Return clear 400 Bad Request responses for invalid inputs
• Add tests for valid and invalid request payloads

Acceptance criteria

• Invalid wallet addresses are rejected with a clear error
• Empty or whitespace-only community and resource values are rejected
• Validation is covered by route or service tests
• Existing valid requests continue to work

[Adesam007-pr3dator]

Hi, I would love to work on this issue

[Dwifax]

Hi! I would love to work on this validation issue. I have shipped several Fastify APIs and recently built a Stellar payment-gateway (guildpass-core) with zod-based input validation across 4 routes. I can reuse the same pattern here: a small validators.ts exporting walletSchema, communityIdSchema, resourceIdSchema (zod), wire them into the 4 route schemas listed in the issue, return clean 400s with field-level error messages, and add vitest coverage. ETA: 1 PR within 24h. Open to feedback on naming/structure before I push.

[grantfox-oss]

🦊 GrantFox — @Dwifax has been assigned to this issue as part of the Official Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #1)
2. Your PR will be reviewed by the Adamantine-guild maintainers

Good luck! Track your progress on GrantFox.

[grantfox-oss]

🦊 GrantFox — @Adesam007-pr3dator has been assigned to this issue as part of the Official Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #1)
2. Your PR will be reviewed by the Adamantine-guild maintainers

Good luck! Track your progress on GrantFox.