docs(260329-ua1): complete readme-md-erstellen plan

- Create SUMMARY.md for quick task 260329-ua1
- Update STATE.md with quick task entry and session info

.planning/STATE.md

@@ -130,9 +130,10 @@ None yet.
 | 260329-tv5 | Uebungsanleitung dauerhaft statt Titel anzeigen | 2026-03-29 | bbb1edb | [260329-tv5-bungsanleitung-dauerhaft-statt-titel-anz](./quick/260329-tv5-bungsanleitung-dauerhaft-statt-titel-anz/) |
 | 260329-u1d | Kindgerechte Erklaerung auf Waldscreen hinzugefuegt | 2026-03-29 | cf21710 | [260329-u1d-kindgerechte-erkl-rung-auf-waldscreen-hi](./quick/260329-u1d-kindgerechte-erkl-rung-auf-waldscreen-hi/) |
 | 260329-u4z | Deutsche Umlaute in UI-Texten und CLAUDE.md | 2026-03-29 | 2691d99 | [260329-u4z-deutsche-umlaute-in-ui-texten-und-claude](./quick/260329-u4z-deutsche-umlaute-in-ui-texten-und-claude/) |
+| 260329-ua1 | README.md erstellen (English, open-source) | 2026-03-29 | 4d95cb6 | [260329-ua1-readme-md-erstellen-english-open-source-](./quick/260329-ua1-readme-md-erstellen-english-open-source-/) |
 
 ## Session Continuity
 
-Last session: 2026-03-29T19:50:00Z
-Stopped at: Completed quick task 260329-u4z
+Last session: 2026-03-29T20:00:00Z
+Stopped at: Completed quick task 260329-ua1
 Resume file: None

.planning/quick/260329-ua1-readme-md-erstellen-english-open-source-/260329-ua1-SUMMARY.md

@@ -0,0 +1,61 @@
+---
+phase: quick
+plan: 260329-ua1
+subsystem: documentation
+tags: [readme, documentation, open-source]
+dependency_graph:
+  requires: []
+  provides: [README.md]
+  affects: []
+tech_stack:
+  added: []
+  patterns: []
+key_files:
+  created: [README.md]
+  modified: []
+decisions: []
+metrics:
+  duration: 2min
+  completed_date: "2026-03-29"
+  tasks: 1
+  files: 1
+---
+
+# Quick Task 260329-ua1: README.md erstellen (English, open-source) Summary
+
+**One-liner:** English open-source README with all standard sections, accurate to actual codebase and project structure.
+
+## Tasks Completed
+
+| Task | Description | Commit | Files |
+|------|-------------|--------|-------|
+| 1 | Create README.md with full open-source documentation | 4d95cb6 | README.md |
+
+## Outcome
+
+README.md created at project root with 134 lines covering all required sections:
+- Header with tagline and concept description
+- Features (10 bullet points)
+- Tech stack (table)
+- Prerequisites
+- Getting Started (bash commands)
+- Available Scripts (table matching package.json)
+- Project Structure (directory tree matching actual src/ layout)
+- How It Works (3 paragraphs explaining the lesson loop)
+- Configuration (API key setup, fallback notes)
+- Deployment (build + VPS preview)
+- Contributing
+- License (not yet licensed, no LICENSE file created)
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Self-Check: PASSED
+
+- README.md exists at /home/dev/workspace/zauberwald/README.md
+- Line count: 134 (minimum required: 80)
+- Commit 4d95cb6 verified in git log
+- All specified sections present
+- Content is in English
+- File paths match actual project structure