# CLAUDE.md - Agent Guidelines for Uni Slides (DHBW + HdM)

This project builds presentation decks for Marp, supporting multiple courses.

## Courses

- **223015b** - Dateiformate, Schnittstellen, Speichermedien (HdM, 6 Kapitel + Klausur)
- **223015c** - Internettechnologien (HdM, 3 Kapitel + Klausur)
- **dhbw** - Technik I – Grundlagen IT (DHBW, 8 Kapitel)

## Agent Restrictions

- Agent NEVER runs commands outside this folder
- Agent NEVER runs build/deploy commands without explicit user request
- Agent NEVER runs deploy commands (make deploy, scp, etc.) without explicit user permission
- Agent NEVER runs `git checkout --` or `git restore` on files with uncommitted work. To undo specific changes, use targeted Edit operations instead.

## Critical File Protection

Slide files in `slides/*/*.md` are main content files:
- ALLOWED: Adding slides, adjusting content, fixing typos, enhancing sections
- FORBIDDEN (without permission): Deleting slides, removing sections, bulk deletions
- Before ANY deletion: ALWAYS ask user for confirmation

## Project Structure

```
slides/
├── 223015b/            # HdM: Dateiformate
├── 223015c/            # HdM: Internettechnik
└── dhbw/               # DHBW: Technik I
scripts/                # Shared scripts
themes/                 # Custom Marp themes
build/                  # Generated output (gitignored)
```

## Build Commands

Unified per-course pattern: `make <target>-<course>`. Group targets without
suffix run for all courses.

```bash
# Per-course (replace <c> with course id: 223015b, 223015c, dhbw)
make dev-<c>         # Live server (HMR) on per-course port
make build-<c>       # Build HTML + PDF
make html-<c>        # HTML only
make pdf-<c>         # PDF only
make klausur-<c>     # Extract klausur slides (HdM only)
make deploy-<c>      # Build + deploy single course (ASK FIRST!)

# All courses
make dev             # Combined dev server (port 1312, all courses)
make build           # Build everything
make html / pdf      # HTML / PDF only
make klausur         # Extract klausur (HdM courses only)
make deploy          # Deploy everything (ASK FIRST!)
```

Per-course ports: `223015b` → 1313, `223015c` → 1314, `dhbw` → 1315.

**Adding a new course:** add id to `COURSES` in Makefile + define `<id>_NAME`,
`<id>_KAPITEL`, `<id>_DEPLOY`, `<id>_PORT`, `<id>_KLAUSUR`. No new targets needed.

## Nix Flake Commands

```bash
nix develop                           # Dev shell with all tools (node 22, npm, make)
```

## Code Style Guidelines

### File Structure
- Slides in `slides/<course>/`
- Assets in `slides/<course>/assets/`
- Always reference images as `./assets/filename.png`

### Naming Conventions
- Slide files: `NN-topic.md` (e.g., `01-grundlagen.md`)
- Images: `snake_case.jpg` or `kebab-case.jpg`

### Markdown Style
- Use ATX-style headers (# ## ###)
- Frontmatter for slide metadata
- Never include a final `---` (creates empty slide)

### Git Workflow
- Commit messages: ALWAYS lowercase
- NEVER add co-authoring lines or generated footers