v4.2.2

[Power2All]

• Fixing versioning, added back healthcheck for Docker and fixed some other small bugs
• Added /// / //! doc comments throughout the codebase for docs.rs / crates.io publishing
• Made a large set of [tracker_config], [sentry_config], and [database_structure.*] keys optional in config.toml — sensible defaults are applied automatically when the keys are absent
  • Optional tracker fields: whitelist_enabled, blacklist_enabled, keys_enabled, keys_cleanup_interval, users_enabled, swagger, prometheus_id, all cluster_* fields, and all rtc_* fields
  • The entire [sentry_config] section can now be omitted (defaults to disabled)
  • All [database_structure.*] sub-sections can be omitted (default table/column names are used)
• --create-config now annotates every optional key with an inline # Optional: defaults to … comment so new users can see at a glance what can be left out
• Refactored impl RtcData out of the struct file into src/tracker/impls/rtc_data.rs, consistent with the rest of the project structure