batch-to-pdf

batch-to-pdf

Produce a single typeset PDF from a Local-Web-Capture batch directory.

Inputs

Either:

• An existing batch id (produced by batch-capture) — resolve to <capture-root>/batches/<batch-id>/.
• A list of URLs — in which case run batch-capture first (without --pdf), then compile its output.

If the user hands over a plain directory that looks like a batch folder (has report.agent.json + articles/), accept it directly.

Preconditions

• typst must be on PATH. If missing, install via cargo install typst-cli or brew install typst. Do not silently skip.
• <batch-dir>/report.agent.json must exist — this is the structured manifest the template reads. If only a markdown report exists, regenerate the agent JSON first (re-run batch-capture in report-only mode).

Template

Bundled at assets/typst/batch-report.typ in this plugin. The template expects three --input values:

• manifest — absolute path to report.agent.json.
• capture_root — absolute path to the batch directory (so article file refs resolve).
• title — optional document title, default "Batch Capture Report".

What the PDF contains

1. Cover page — title, batch id, generation timestamp, capture count summary.
2. Table of contents — one line per article: [##NN] Title — domain.
3. One section per article. Each section starts on a new page with:
   • [##NN] Title heading.
   • A shaded metadata block showing:
     • Source URL (clickable link)
     • Captured (ISO timestamp)
     • Domain
     • Language · Word count · Extractor (rung)
   • Body text, YAML frontmatter stripped, paragraph breaks preserved, #/## rendered as bolded lines.
4. Footer on every page — centered, small, light grey: Page N of M.

Command

Locate the bundled template (${CLAUDE_PLUGIN_ROOT}/assets/typst/batch-report.typ or the equivalent resolved plugin path) and run:

typst compile \
  --root / \
  --input manifest="<batch-dir>/report.agent.json" \
  --input capture_root="<batch-dir>" \
  --input title="<user-supplied or derived>" \
  "<template-path>" \
  "<batch-dir>/report.pdf"

Use --root / because article files are read via absolute paths in the manifest.

Options

• --title "<str>" — override the cover title.
• --out <path> — write the PDF somewhere other than <batch-dir>/report.pdf.
• --open — open the resulting PDF with the user's default viewer (xdg-open on Linux) after compile.

Flow

1. Resolve batch directory (from id, URL list, or explicit path).
2. Verify report.agent.json is present and well-formed (parse-check; fail early if not).
3. Verify typst is on PATH; otherwise tell the user how to install.
4. Run typst compile with the inputs above.
5. If compile fails, surface the stderr (Typst errors are usually about a missing article file or a JSON field mismatch — both fixable).
6. On success, report the output path and its file size. Offer --open if the user might want it immediately.

Do not

• Do not edit or rewrite captured article bodies to "clean them up" for the PDF. Render what's on disk.
• Do not embed remote images or fonts — everything must render from the user's machine.
• Do not regenerate the batch just to change the PDF title; use --title.
• Do not fall back to wkhtmltopdf or pandoc if Typst is missing; ask the user to install Typst.