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feat(web): response-viewer transcript fallback + code-block rendering (#102)

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* feat(web): response-viewer transcript fallback + code-block rendering

- Add _cleanTerminalBuffer(): strip ANSI escapes and Claude CLI chrome
  (status bar, spinner, progress bar, prompt glyphs) from the terminal
  buffer so the response viewer renders clean text when the JSONL
  transcript is missing.
- Add _preprocessAsciiArt(): wrap box-drawing/block-element diagrams in
  fenced code blocks (narrow trigger that excludes arrows/geometric
  shapes common in prose) so marked.js preserves their whitespace.
- Extend .rv-text rules to .response-viewer-body so fallback-rendered
  content gets the same typography, code-block, and table styling.

* refactor(web): drop duplicate _cleanTerminalBuffer/_preprocessAsciiArt

These two methods already exist on master (added in #75). This branch
re-added byte-identical copies above _sanitizeHtml; in a JS class body the
later definition wins, so the duplicates were inert dead code. Remove them,
keeping only the genuinely new work: the _renderMarkdown null-safety fix and
the response-viewer CSS overhaul.

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

---------

Co-authored-by: Teigen <teigen@TeigendeMac-mini.local>
Co-authored-by: arkon <arkon.85@hotmail.com>
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Tenggan Zhang
2026-06-01 19:43:52 +02:00
committed by GitHub
co-authored by Claude Opus 4.8 Teigen arkon
parent ec38fd11bf
commit 68594ac395
2 changed files with 125 additions and 61 deletions
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src/web/public/app.js
+3 -2
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@@ -1110,9 +1110,10 @@ class CodemanApp {
/** Render markdown to sanitized HTML, falling back to plain text if marked.js unavailable */
_renderMarkdown(text) {
const src = text || '';
if (typeof marked !== 'undefined' && marked.parse) {
try {
const prepared = this._preprocessAsciiArt(text);
const prepared = this._preprocessAsciiArt(src);
let html = this._sanitizeHtml(marked.parse(prepared, { breaks: true, gfm: true }));
// Wrap tables in a horizontal-scroll container so they overflow gracefully
// on mobile without collapsing into block-level cells.
@@ -1168,7 +1169,7 @@ class CodemanApp {
} catch { /* fall through */ }
}
// Fallback: escape HTML and preserve whitespace
const escaped = text.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
const escaped = src.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
return `<pre style="white-space:pre-wrap;word-break:break-word">${escaped}</pre>`;
}