0c9ecbfad6
Wire config.feed.enabled and config.sitemap.enabled into main.rs run() function. Both default to true, so existing behavior is preserved. Add 5 new tests: feed/sitemap config defaults, independent disable, and ConfigContext nav structure with base_url trailing-slash normalization. Test suite: 69 → 73 tests, all passing. Phase 1 complete — all plan items checked off.