fix(scrape): make vision OCR a per-bundle allowlist, not a corpus sweep

The first vision pass OCR'd every large image and, because the "transcribe
the table" prompt makes qwen render ANY image as a markdown table, it turned
60 product UI screenshots into junk "tables" in the corpus. In practice the
only image-only DATA in this corpus is the release-schedule matrix — the
upgrade-compatibility matrices etc. are already native HTML tables, no OCR
needed.

- Add BundleSpec.ocr (default False); the runner passes the OCR-enabling
  session only for bundles that opt in. Set ocr=True only on
  morpheus_release_schedule.
- Purge the 60 screenshot cache entries (keep the release-schedule one). The
  next --force refresh regenerates every other page's .md WITHOUT the bogus
  "## Image transcriptions" section, cleaning the deployed corpus + index.
- Update vision.py / refresh.yml docs to the allowlist model.

Also add scripts/vision_report.py — a self-contained HTML report pairing each
OCR'd source image with its transcription (uncertain-first) for accuracy
inspection. Regenerate anytime from corpus/.vision-cache/.

Verified: release schedule still transcribes (cache hit); cache is back to 1
entry; other bundles now pass no session so their images are left alone.

Co-Authored-By: Claude Opus 4.8 <[email protected]>
Claude-Session: https://claude.ai/code/session_01LFowQzJu7k97QLCRDSAeh1

scrape/runner.py

@@ -212,7 +212,10 @@ def scrape_toc_bundle(s: requests.Session, bundle: dict, force: bool, concurrenc
         page_html = fetch_toc_page(s, doc_id, entry.page_id)
         if not page_html:
             return False
-        body_md = html_to_md(page_html, s)
+        # Only pass the session (which enables image OCR) for bundles that
+        # opt in — image-only data lives in a few docs; the rest are UI
+        # screenshots that OCR would just turn into noise.
+        body_md = html_to_md(page_html, s if bundle.get("ocr") else None)
         sidecar = {
             "bundle_id": slug,
             "page_id": entry.page_id,
@@ -243,7 +246,7 @@ def scrape_single_bundle(s: requests.Session, bundle: dict, force: bool) -> int:
     if not html:
         print(f"  ! {slug}: empty body", file=sys.stderr)
         return 0
-    body_md = html_to_md(html, s)
+    body_md = html_to_md(html, s if bundle.get("ocr") else None)
     sidecar = {
         "bundle_id": slug,
         "page_id": doc_id,