Add values.schema.json with comprehensive validation for chart values:
- All core fields with types, defaults, and enums
- Validation preventing NetworkPolicy + hostNetwork conflicts
- Validation preventing NetworkPolicy + DLNA conflicts
The schema uses JSON Schema draft-07 with allOf/if-then logic to enforce
mutual exclusivity: networkPolicy.enabled cannot be true when either
jellyfin.enableDLNA or podPrivileges.hostNetwork is true.
Validated with check-jsonschema against current values.yaml and
test cases for both valid and invalid configurations.
Co-Authored-By: Claude <noreply@anthropic.com>
Signed-off-by: Aleksei Sviridkin <f@lex.la>