TIDEBORNE 2.1.0

Fabric 1.21.1 addon for Tide 2.1.1, using Java 21.

Public surface
- Mod ID: tideborne
- Config: config/tideborne.json
- Command menu: /tideborne
- Migration marker: config/tideborne-migration.json

Current behavior and maintenance documentation
- docs/INDEX.md routes to the maintained subsystem documents.
- docs/CURRENT_STATE.md records the current implementation and compatibility baseline.
- docs/ARCHITECTURE.md records the canonical fishing, presentation and subsystem owners.
- docs/TODO.md records unfinished work.

Compatibility
Legacy serialized namespaces remain preserved: tide_traits:,
tide_team_journal:, and tidebound_compatibility:. Existing items, components,
saved journals, packets and worlds retain their compatibility readers.
The versioned migration notes packaged with this JAR are historical references.

Install
Use only this JAR. Remove older Tideborne builds and the three former standalone JARs.
