- Remove unused envconfig tags (BackendHost, FrontendHost, etc.)
- Remove APITokenEnabled (infer from token count)
- Remove IframeEmbeddingAllow, Port, Debug, ConcurrentPolling
- Clean up temperature proxy comments from ClusterEndpoint
- Simplify API token diagnostic to use config field directly
Tests were failing in CI because they created nodes.enc files without
valid encryption keys, triggering the crypto safety check.
Added createTestEncryptionKey helper and fixed:
- TestLoad_MockEnv (config_load_test.go)
- Multiple tests in commands_test.go that create nodes.enc
Tests were calling Load() without setting PULSE_DATA_DIR, causing them
to try to create /etc/pulse which fails in CI environments.
- Skip TestLoad_Defaults if /etc/pulse doesn't exist
- Add PULSE_DATA_DIR to tests that were missing it
