223015b+c klausurfragen: sose26-klausurset kuratiert + wording-fixes

- 223015c: G7 id-selektor neu (ersetzt spezifität-ansatz), B10 encapsulation
  + E3 gesamtablauf disabled (tcp-handshake nie ausreichend behandelt),
  G6 ohne hsl + farbname/color code, H6 curb-cut-wording (genau zwei
  beispiele, klickflächen/kontrast/tab+enter), H7 attribute statt tags
  + screenreader-distraktor + tastatur-wording, B7b dns: domain->ip
- 223015b: J22 ohne buch-lesen + überwiegend unabhängig, K2 sie-form
  + taschenrechner-hinweis, strg/cmd+f
- .gitignore: slides/**/*-INTERN.md (lokale klausur-previews, nie deployen)
- 223015b/CLAUDE.md: deck-doku + downstream-verweis aufs klausur-repo

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

slides/223015b/CLAUDE.md

@@ -0,0 +1,34 @@
+# CLAUDE.md — 223015b lecture deck
+
+Marp lecture slides + master question catalog for HdM Stuttgart course **223015b — „Dateiformate, Schnittstellen, Speichermedien & Distributionswege"**. Author: Michael Czechowski, SoSe 2026. This directory is the **source of truth**; the exam artifacts (Moodle XML) are derived downstream (see [Downstream](#downstream)).
+
+## Files
+
+| File | Role |
+|---|---|
+| `00-intro.md` | Intro / organizational deck |
+| `01-grundlagen-text-audio.md` | Grundlagen: Text & Audio |
+| `02-bild-audio-video.md` | Bild, Audio, Video |
+| `03-speichermedien-schnittstellen.md` | Speichermedien & Schnittstellen |
+| `04-distribution-apis-zukunft.md` | Distribution, APIs, Zukunft |
+| `05-vertiefung-offene-fragen.md` | Vertiefung / offene Fragen |
+| `klausurfolien.md` | Exam-review slides |
+| `klausurfragen.md` | **Master question catalog — 122 Fragen** (`[MC]/[MM]/[MATCH]/[ORDER]/[ESSAY]/[SHORTANS]/[NUMERIC]/[CLOZE]`) |
+| `assets/`, `materials/` | Images and supporting material |
+
+All decks are **Marp** Markdown (`marp: true`, theme `gaia`) with a shared inline `<style>` block. Highlight color for this course: `#1e5f8a` (blue). Sibling deck: `../223015c/` (Internettechnik, highlight `#d63384`).
+
+## Conventions
+
+- Each question in `klausurfragen.md` = `### <ID> – <title>` + `**Thema:**` + `**Punkte:**` + `**Typ:**` + body + `> **Feedback:**`/`> **Musterlösung:**`. Keep this shape — downstream tooling parses `**Thema:**` and `**Typ:**`.
+- Correct MC options marked `- [x] **…** ✅`; matching as a 2-column table; ordering as a numbered list.
+- `marp` CLI renders to HTML/PDF: `marp <file>.md` (see marp-team/marp-cli).
+
+## Downstream
+
+The **exam question bank + Moodle Quiz XML** live in a separate repo:
+
+- Local: `/home/mwc/Documents/HDM/klausur/`
+- Git: `ssh://tengo@git.librete.ch:41240/libretech/2026-hdm-klausur.git`
+
+There, `klausurfragen-b-course-dateiformate.md` is a **curated subset (81/122)** of this deck's `klausurfragen.md`, and the questions are exported as Moodle XML for import. **Edit questions here first**, then sync the subset + regenerate/patch the XML downstream (that repo's CLAUDE.md + `moodle-quiz-xml` skill document the XML format and workflow).