[cold-13]

Summary

Implements GET /keys/:key_id/gate endpoint returning content gate configuration for a creator key.

Changes

• Add key gate config contract reader (get_gate_config pattern) with decoding for gate types and params
• Add key gate config service with 60s Redis caching and key resolution
• Add route GET /keys/:keyId/gate returning gate_type, requirement_params, is_gated
• Add gate config cache key and TTL (60s) in config and redis constants
• Add gate config change event handling in indexer for cache invalidation
• Support gate types: HOLDER, SUBSCRIBER, THRESHOLD; returns is_gated false when not configured

Acceptance Criteria

• Gate config endpoint returns accurate gate_type and params
• is_gated: false returned correctly for ungated keys
• Cache invalidates correctly on gate config change events
• All four gate types returned correctly (including 'none' case)
• Response time under 150ms for cached requests

Closes #1150

[drips-wave]

@cold-13 Great news! 🎉 Based on an automated assessment of this PR, the linked Wave issue(s) no longer count against your application limits.

You can now already apply to more issues while waiting for a review of this PR. Keep up the great work! 🚀

Learn more about application limits

[Chucks1093]

⚠️ Merge Conflict Detected

This PR currently has a merge conflict and cannot be merged until it is resolved.

Please rebase or merge the latest changes from the base branch into your branch and push again.

[Chucks1093]

✅ PR Ready for Review

Due to a recent malware incident affecting our repositories, all PRs are required to pass automated security checks before being reviewed for merging.

This PR has passed all automated checks:

• ✅ Security scan — no malicious code detected
• ✅ No merge conflicts
• ✅ CI checks passed

Next step: Please share this PR link in our Telegram group so a maintainer can review and merge it: https://t.me/c/accesslayerorg/8514