Project Status

Web App — Complete

All 10 modules fully written and deployed. No known outstanding work.

Companion PDF — Manuscript Complete

Note: PDF chapters are not 1:1 with web modules. The PDF restructures content to follow a different pedagogical order.

Ch	PDF Title	Web Module	Status	Priority
1	Setup and the Compilation Model	m1 (part)	Done	—
2	Types, Operators, and Control Flow	m1 (part)	Done	—
3	Pointers and the Memory Model	m2	Done	—
4	Dynamic Memory	m3	Done	—
5	Structs, Unions, and Bit Fields	m4	Done	—
6	The C Preprocessor	m5	Done	—
7	File I/O and System Calls	m6	Done	—
8	Processes and Signals	m7	Done	—
9	Sockets and Networking	m8	Done	—
10	Concurrency	m9	Done	—
11	Going Below C	m10	Done	—

Appendices

• Appendix A — Debugging reference (GDB, Valgrind, ASan/TSan, core dumps)
• Appendix B — Interview prep (20 model answers, 6 topic areas)
• Appendix C — VHCosta/c-systems-lab-exercises live; URL correct in src/appendix/repo.typ

Exercise Distribution

See source-exercise-plan for full detail. Three-tier model:

• Public repo (VHCosta/c-systems-lab-exercises) — live, exercise stubs only
• Paid code bundle — full solutions + extended projects (built, not yet uploaded)
• Private authoring repo — PDF source, content/, scripts

All infrastructure phases complete (1–6): canonical content/ tree, validate.sh (43/43 PASS), export.sh, public repo live, dist.sh assembles Gumroad upload folder.

Publish Checklist

• Spot-check all 3 PDF tiers (base 142 pp · solutions 207 pp · complete 217 pp)
• Create c-systems-lab-exercises GitHub repo; update Appendix C URL
• Push public export; /repo redirect live on web app
• Create Gumroad product ($18/$28 / $38) — listing live, copy revised (see pdf/GUMROAD.md)
• Exercise QC pass — solutions leak fixed, numbering scar fixed (ex1_4→ex1_3), export structure corrected
• PDF cover redesigned — Space Grotesk Bold, dark background, amber accent, matches Gumroad cover
• dist/ assembled via scripts/dist.sh — 3 Gumroad upload folders ready
• Upload files to Gumroad — live at vhcosta.gumroad.com/l/c-systems-lab
• Update exports/public/README.md with Gumroad URL → re-pushed exercises repo

Post-Launch (2026-04-11)

Web app polish deployed:

• Tab title: removed “Personal Course” suffix
• Sidebar: 10px gap between ← toggle and course title
• Terminal: fixed output bleeding through collapsed state; backdrop click now correctly collapses terminal (Terminal made fully controlled from LessonView)

Wiki deployed:

• llc-wiki.pages.dev live via Quartz 4 + Cloudflare Pages
• Auto-deploys on push to VHCosta/llc-wiki
• PWA manifest + {c} B&W favicon added
• meta-wiki-hosting status: IMPLEMENTED

Plans reorganised:

• GB_EMULATOR.md and TERMINAL_PLAN.md moved to plans/ in llc-course repo
• Marked as next work to address (see above)

Next Work to Address

Both items are documented in plans/ in the llc-course repo.

1. Terminal rework (next)

Phased hybrid: WASM for Modules 1–4, then local companion binary for Modules 5–10. See meta-terminal-plan and plans/TERMINAL_PLAN.md.

2. Game Boy emulator ch12 (after terminal)

Option A: PDF-exclusive chapter 12 — not yet written. Roadmap callout needs “Companion PDF” badge. See meta-gb-emulator and plans/GB_EMULATOR.md.

Open Strategic Questions

• PDF versioning — free Gumroad update when ch12 ships, or price bump for new buyers?
• Exercises repo — currently a delivery mechanism; opportunity as an independent discovery channel
• Expansion beyond C — Rust systems course or OS internals as a second product

Wiki Health

• Initial ingest: 2026-04-07
• Last QC audit: 2026-04-11
• Module pages: 10/10
• Concept pages: 23
• Source pages: 5 (added source-product-strategy)
• Meta pages: 3 (added meta-terminal-plan, meta-gb-emulator)
• Orphan check: clean