Add handlers for enable_standard_headers, forward_auth_enabled, and waf_disabled fields
in the proxy host Update function. These fields were defined in the model but were not
being processed during updates, causing:
- 500 errors when saving proxy host configurations
- Auth pass-through failures for apps like Seerr/Overseerr due to missing X-Forwarded-* headers
Changes:
- backend: Add field handlers for 3 missing fields in proxy_host_handler.go
- backend: Add 5 comprehensive unit tests for field handling
- frontend: Update TypeScript ProxyHost interface with missing fields
- docs: Document fixes in CHANGELOG.md
Tests: All 1147 tests pass (backend 85.6%, frontend 87.7% coverage)
Security: No vulnerabilities (Trivy + govulncheck clean)
Fixes#16 (auth pass-through)
Fixes#17 (500 error on save)
f936c93896