F10 SLICE-3: remove superseded public renderAuthorship (salvaged into colorByAuthor) (#29)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/trackChangesModel.ts

@@ -367,39 +367,6 @@ export function colorByAuthor(
   return sentinelsToSpans(render(injected));
 }
 
-/**
- * Pure authorship render (INV-26/28): the CURRENT text with each F3-attributed
- * span colored by author. Prose blocks get inline `<span class="cw-by-*">`;
- * code/mermaid fences stay ATOMIC (INV-27) — an overlapping span yields a
- * block-level author badge, never inner sentinels. Deterministic.
- */
-export function renderAuthorship(
-  currentText: string,
-  spans: AuthorSpan[],
-  opts: RenderOptions = {},
-): string {
-  const render = opts.render ?? defaultRender;
-  const safe = (src: string): string => {
-    try {
-      return render(src);
-    } catch (err) {
-      return chip(err instanceof Error ? err.message : String(err));
-    }
-  };
-  return splitBlocksWithRanges(currentText)
-    .map((b) => {
-      const overlapping = spans.filter((s) => s.end > b.start && s.start < b.end);
-      if (b.type !== "prose") {
-        const badge = authorBadge(new Set(overlapping.map((s) => s.author)));
-        const inner = safe(b.raw);
-        if (!badge) return `<div class="cw-blk">${inner}</div>`;
-        return `<div class="cw-blk ${badge.cls}"><span class="cw-badge">${badge.label}</span>${inner}</div>`;
-      }
-      return `<div class="cw-blk">${colorByAuthor(b.raw, b.start, overlapping, safe)}</div>`;
-    })
-    .join("\n");
-}
-
 /** Off-state body: the current buffer as plain markdown, no annotations (INV-33). */
 export function renderPlain(currentText: string, opts: RenderOptions = {}): string {
   const render = opts.render ?? defaultRender;