refactor(syllabus): split 749-line syllabus.qmd into _subfiles/

[d-morrison]

What

Splits the 749-line chapters/syllabus.qmd into a thin parent + 18 named subfiles under _subfiles/syllabus/, addressing the one item deferred from the #912 review (review comment).

• The parent is now a 99-line outline: front matter, the callout, the banner table, and one {{< include >}} per major section — every section heading stays in the parent.
• Each major section's body moves to its own _sec-*.qmd (e.g. _sec-texts.qmd, _sec-homework.qmd, _sec-learning-resources.qmd, _sec-overview-table.qmd).
• No subfile begins with a section heading, per CLAUDE.md.
• Include path mirrors the established repo pattern (chapters/_subfiles → ../_subfiles symlink), matching Intro-to-GLMs.qmd.

Content is unchanged

This is a pure mechanical move. Expanding the includes reproduces the original document: diff -B is empty and all 563 non-blank lines match. No prose was reworded.

Checks (all pass)

• Render — quarto render chapters/syllabus.qmd --to html succeeds; all headings and sampled body content (Texts/Stroup, Territory/Patwin, Homework/self-grade, both Employment sections) confirmed present in the HTML.
• Lint — lintr reports 0 issues on all changed files (they contain no R code).
• Spell — spelling::spell_check_package() → "No spelling errors found".

Notes

• This branch was previously used for the (already-merged) CLAUDE.md change in docs(CLAUDE.md): watch PRs until merged/closed by default #917; that change is in main, so this PR's diff is only the syllabus split.
• To render locally I had to git submodule update --init latex-macros (the latex-macros/ macros submodule was uninitialized in the fresh container — a pre-existing setup gap, not part of this change). No submodule pointer change is committed.
• Touches _subfiles/, so the clear freezer label applies.

🤖 Generated with Claude Code

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Generated by Claude Code

[claude]

Claude finished @d-morrison's task in 2m 28s —— View job

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Code Review

• Read all 18 subfiles and parent chapters/syllabus.qmd
• Verified CLAUDE.md conventions
• Checked CI status
• Compiled findings

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Overall verdict: LGTM with one action item (missing label).

This is a clean mechanical split. All CLAUDE.md structural conventions are satisfied. CI lint and spellcheck have both passed; the Quarto Preview Build is still running.

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What's correct

Convention	Result
No subfile begins with a section heading	✅ All 18 subfiles open with prose or a table
All #/## headings stay in parent	✅ Parent holds every heading; subfiles contain only body
Parent ≤ ~100 lines	✅ Exactly 99 lines
chapters/_subfiles → ../_subfiles symlink present	✅ Verified on disk
Include paths follow established pattern	✅ Matches Intro-to-GLMs.qmd convention
Files placed in _subfiles/syllabus/	✅ Correct subdirectory

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Action item

Missing "clear freezer" label — the PR description correctly notes "Touches _subfiles/, so the clear freezer label applies", but the label has not been applied. Per CLAUDE.md, it is required whenever _subfiles/ are edited. Please add it before merging.

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Minor observations (not blocking)

_subfiles/syllabus/_sec-homework.qmd — 123 lines (CLAUDE.md guideline is ~100). The file has six subsections (### Homework Submission Format, ### Late Work, ### Collaboration, ### Artificial Intelligence, ### Homework Grading, ### Expected Study Workload). For a pure mechanical refactor this is reasonable; further splitting could be a follow-up if desired.

_subfiles/syllabus/_sec-texts.qmd, lines 44–72 — the two Kleinbaum & Klein books are listed twice: once in the main catalogue (lines 44–53) and again in the free-download paragraph (lines 62–72), with identical URLs. This is pre-existing content, not introduced by this PR, so no action needed here; just flagging for awareness.

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[claude]

Claude finished @d-morrison's task in 2m 21s —— View job

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Code Review — PR #927 (syllabus split)

• Read context and PR description
• Read all 18 subfiles and modified parent chapters/syllabus.qmd
• Check CLAUDE.md conventions
• Check CI status
• Final summary verdict

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Overall verdict: LGTM

This is a clean, correct mechanical split. Every CLAUDE.md structural rule is satisfied and CI passes on lint and spellcheck.

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CLAUDE.md convention checklist

Convention	Result
No subfile begins with a section heading	✅ All 18 open with prose or a table
All #/## headings stay in the parent	✅ Parent holds every heading
Parent ≤ ~100 lines	✅ Exactly 99 lines
chapters/_subfiles → ../_subfiles symlink present	✅ Verified
Include paths follow established pattern	✅ Matches Intro-to-GLMs.qmd
Files placed in _subfiles/syllabus/	✅
"clear freezer" label applied	✅ Already on the PR

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CI status

Check	Result
Spellcheck	✅ passed
lint-changed-files	✅ passed
Quarto Preview Build	⏳ in progress

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Minor observations (non-blocking; pre-existing content)

_subfiles/syllabus/_sec-homework.qmd — 123 lines. The CLAUDE.md guideline is ~100. Six subsections (### Homework Submission Format, ### Late Work, ### Collaboration, ### Artificial Intelligence, ### Homework Grading, ### Expected Study Workload) make this the longest subfile. For a pure mechanical refactor this is fine; further splitting could be a follow-up if desired.

_subfiles/syllabus/_sec-texts.qmd — duplicate entries. The two Kleinbaum & Klein books appear twice: once in the main catalogue (lines 44–52) and again under the "free download" paragraph (lines 66–72), with identical URLs. Pre-existing content, not introduced here.

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[github-actions]

PR Preview Action v1.8.1
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