* feat(annotate): render html files by default
* fix(annotate): support raw html assets and sharing
* fix(annotate): address html first review followups
* fix(editor): avoid raw html sidebar init crash
* fix(annotate): support portable html shares
* fix(annotate): harden html share support
* fix(share): clear attachments when loading shared payloads
* fix(share): warn on remote share link failures
* perf(annotate): lazy-build html share payloads
* test(annotate): guard lazy html share generation
* test(annotate): drop flaky html share server test
Michael Ramos