Update integration tests to reflect new validation order and circuit breaker integration in unfurl service. Changes in post_creation_test.go: - Fix content length validation test expectations - Update validation order: basic input before DID authentication - Adjust test assertions to match new error flow Changes in post_unfurl_test.go: - Update Kagi provider test to expect circuit breaker wrapper - Fix provider name expectations in unfurl tests - Ensure tests align with circuit breaker integration These changes ensure all integration tests pass with the new validation flow and circuit breaker implementation. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>