Task 7 of the native-surfaces migration plan. Pure previewAnnotations.ts
(annotateSource + cowritingMarkdownItPlugin) reuses trackChangesModel.ts's
sentinel discipline (#33/#47), generalized to a 3-way ins-claude/ins-human/del
tag (exported injectSentinels/sentinelsToSpans, colorByAuthor unaffected,
84/84 existing tests pass unmodified). Host hook in extension.ts wires
registry/diffView/attribution/proposals/config into the plugin, exposed via
CowritingApi.extendMarkdownIt + a previewAnnotationHost test seam.
cowriting.annotations setting + toggleAnnotations command/menu. Q4 mermaid
(previewScripts + options.highlight fence override) implemented per the
proven bierner.markdown-mermaid pattern; intra-diagram diff augmentation
scoped out (unverifiable via the structural E2E harness) — see
task-7-report.md.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
activate() registers showClineSdkInfo, which renders the SDK summary to a
notification and output channel. esbuild bundles to CJS, keeping vscode and
@cline/sdk external (the ESM SDK loads via runtime dynamic import).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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