A focused update with several long-requested improvements.

Change notes for update build 260704

Provenance verifier rebuilt: The verification page now supports four modes. Verify by project ID as before, or upload a document PDF and have the verifier extract the embedded metadata, compute its SHA-256 hash, and check it against the sealed record automatically. You can also drop in a provenance report PDF to auto-extract the project and report identifiers, or use cross-match mode to upload both PDFs at once and confirm the document and report correspond to each other. All verification happens client-side before contacting the server.
HMAC and seal checks: Verification results now show explicit pass/fail indicators for report HMAC integrity (confirming the report data has not been tampered with) and for the git seal status (confirming the project state was committed to the transparency ledger).
Templates gallery: A new Templates page is available from the navigation bar. It lists official and community-contributed project templates with search, sort by popularity or recency, and pagination. Clicking a template opens it directly in the editor.
Try the editor without an account: Clicking "Open the editor" on the homepage now opens a live embedded editor session in the browser with no sign-up required. The full editor is available immediately for evaluation.
WYSIWYG and Markdown editor: The editor now includes a visual editing mode. Switch from raw LaTeX to Markdown at any time and use a formatted toolbar to insert headings, bold, italic, equations, and images. The document still compiles to LaTeX output.
App tour guide links: Each hotspot in the interactive editor tour now includes a direct link to the relevant handbook section for that feature.