slam-add-lecture

name

slam-add-lecture

description

Compress a finished lecture PDF with ghostscript, drop it into slam_slides/, and add a new Lecture NN entry to slam.md. Use this whenever the user says they "finished" or "completed" a new SLAM lecture, asks to "add Lec NN" / "Lecture NN을 추가", supplies a path to LecNN_SLAM_for_everyone.pdf, or otherwise wants to publish the next lecture on the /slam/ page. This is the canonical end-to-end "publish a new lecture" workflow for this repo — prefer it over running the gs command and editing slam.md by hand.

Add a new SLAM lecture (compress PDF + edit slam.md)

This skill captures the full publish-a-new-lecture workflow: the source PDF lives in Dropbox, gets compressed by ghostscript, lands in the repo at slam_slides/LecNN_SLAM_for_everyone.pdf, and gets a <div class="slam-section"> block inserted into slam.md so the toggle, language pairs, and link buttons all line up with the rest of the page.

When to use

• User finished a new lecture and wants it published.
• User points at LecNN_SLAM_for_everyone.pdf (or a math supplementary PDF) and asks to add it.
• User says something like "Lec 10도 추가하자" / "compress and add Lec NN".

If the user only wants the slam.md edit (e.g., refreshing sub-items for a deck that's already in slam_slides/), use slam-lecture-entry directly instead.

Inputs

• Lecture number N (e.g., 9, 10).
• Source PDF, normally at:

  /Users/fudxo/Library/CloudStorage/Dropbox/!lectures/모두를 위한 SLAM/slides/LecNN_SLAM_for_everyone.pdf
  

  For math supplementary decks: LecNN_math_supplementary.pdf in the same directory.
• (Optional) YouTube URL. If not provided, use the placeholder https://limhyungtae.github.io/ — never fabricate a real YouTube ID.

Steps

1. Read the PDF. Use the Read tool with pages: "1-N" to scan all slides. The sub-items for slam.md come from the top-bar section markers in the deck (the thin Beamer-style category bar above each content slide). See slam-lecture-entry for the detailed formatting rules — they apply here.

2. Compress with ghostscript. Use this exact command — the /prepress quality preserves figure clarity, which matters for the math-heavy decks:

   gs -sDEVICE=pdfwrite \
      -dCompatibilityLevel=1.4 \
      -dPDFSETTINGS=/prepress \
      -dPrinted=false \
      -dNOPAUSE -dQUIET -dBATCH \
      -sOutputFile="/Users/fudxo/git/LimHyungTae.github.io/slam_slides/LecNN_SLAM_for_everyone.pdf" \
      "/Users/fudxo/Library/CloudStorage/Dropbox/!lectures/모두를 위한 SLAM/slides/LecNN_SLAM_for_everyone.pdf"
   

   The output goes directly into slam_slides/ (no underscore prefix — Jekyll excludes _-prefixed folders from the build). Verify the size after — typical compressed Lec PDFs are 1.3–5 MB.

3. Edit slam.md. Insert a new <div class="slam-section"> block immediately before the "More lectures coming soon..." section (search for 강의는 계속 추가될 예정입니다 to locate it). Follow the layout rules from slam-lecture-entry:

   • One <h3> with bilingual .lang-ko + .lang-en title.
   • One <li> per top-bar segment.
   • Video + Slide buttons on the first <li> only.
   • Slide href: /slam_slides/LecNN_SLAM_for_everyone.pdf (local path, not Dropbox).
   • Video href: real YouTube URL if supplied, otherwise placeholder.

4. For supplementary decks (e.g., LecNN_math_supplementary.pdf): add a single extra <li> to the existing Lecture NN block with <span class="lecture-num">Supp.</span> and only a Slide button (no Video).

5. Commit and push. Stage both the new PDF and slam.md. Use a commit message like Add Lecture NN: <Title>. Push so GitHub Pages rebuilds.

Do not

• Don't put the PDF in _slam_slides/ (leading underscore → Jekyll excludes it from the published site).
• Don't link to Dropbox in slam.md anymore — the canonical slide URL is now the local /slam_slides/... path.
• Don't fabricate a YouTube URL when the lecture isn't recorded yet — the page hides Video buttons in English mode anyway, and Korean viewers should see the placeholder rather than a dead link.
• Don't restructure the existing toggle/CSS or reorder existing lectures.

Verify

After committing:

• Run grep -n "Lecture NN" slam.md — exactly one block should match.
• Confirm the slide button href points at /slam_slides/LecNN_...pdf (no underscore prefix on the folder).
• After push, give GitHub Pages 1–3 min, then hard-refresh the live /slam/ page.