docs: add README with quick start guide

- Overview of AI Self-Improvement Digest
- Quick start installation instructions
- Daily workflow explanation
- Source tiers and frequencies
- Output format examples
- Experiment tracking guidance
- Key principles for suggestions

README.md

@@ -0,0 +1,131 @@
+# AI Self-Improvement Digest
+
+Daily curated digest focused on AI self-improvement — content that helps AI agents get better at their job.
+
+## Overview
+
+This skill generates a daily digest covering:
+- **Harness & System Prompt Engineering** — Structuring agent instructions
+- **Skill & Tool Development** — New tools, MCP servers, integration patterns  
+- **Self-Evaluation & Improvement** — How agents assess and improve themselves
+- **Multi-Agent Coordination** — Spawning, supervising, merging work
+- **Memory & Context Management** — RAG, long-term memory, compaction
+- **Workflow Automation** — Task decomposition, failure handling
+- **Foundational Research** — Academic work on agent capabilities
+
+## Quick Start
+
+### 1. Install the Skill
+
+```bash
+# Clone to your OpenClaw skills directory
+git clone https://git.terraphim.cloud/kimie05c34be198a20b9/ai-self-improvement-digest.git
+
+# Or add as submodule
+git submodule add https://git.terraphim.cloud/kimie05c34be198a20b9/ai-self-improvement-digest.git skills/ai-self-improvement-digest
+```
+
+### 2. Create Tracking File
+
+```bash
+mkdir -p memory
+cat > memory/ai-digest-posted.json << 'EOF'
+{
+  "posted": [],
+  "experiments": [],
+  "skillsEvaluated": [],
+  "setupChanges": []
+}
+EOF
+```
+
+### 3. Set Up Cron Job
+
+```bash
+openclaw cron add \
+  --name ai-self-improvement-digest \
+  --schedule "30 8 * * *" \
+  --tz "Asia/Shanghai" \
+  --message "Generate today's AI Self-Improvement Digest following the workflow in the ai-self-improvement-digest skill. Read memory/ai-digest-posted.json first for deduplication."
+```
+
+## Daily Workflow
+
+1. **Deduplication** — Read `memory/ai-digest-posted.json`, skip already posted
+2. **Scan Sources** — Check Tier 1-3 sources for last 24-72h content
+3. **Filter** — Only include self-improvement relevant items
+4. **Format** — 3-5 items with summary, relevance, takeaway
+5. **Experiment** — Suggest one small experiment to try
+6. **Setup Review** — Compare findings against existing setup, suggest updates
+7. **Track** — Append to `memory/ai-digest-posted.json`
+
+## Sources
+
+| Tier | Sources | Frequency |
+|------|---------|-----------|
+| **1** | Anthropic Engineering, Simon Willison, Geoff Huntley, Hacker News, Lilian Weng | Daily |
+| **2** | Latent Space, Cursor Blog, Eugene Yan, Chip Huyen, Mitchell Hashimoto | 2-3x/week |
+| **3** | arXiv cs.CL/cs.AI, GitHub Trending | Weekly |
+
+## Output Format
+
+```
+🧠 AI Self-Improvement Digest — 2026-02-26
+
+**[Article Title]** — Source
+What: One-sentence summary
+Why it matters: How this helps you improve
+Takeaway: Specific pattern to try
+Relevance: ⭐⭐⭐⭐⭐
+
+💡 Today's experiment: [One small thing to try]
+
+🔧 Setup Review
+- Let's add [X] because [reason from article]
+- Let's update [Y] to [improvement]
+
+📊 Feedback: 👍 useful | 👎 skip | 🔥 more | 💬 thoughts
+```
+
+## Experiment Tracking
+
+Log experiments and outcomes in `memory/ai-digest-posted.json`:
+
+```json
+{
+  "experiments": [
+    {
+      "date": "2026-02-26",
+      "fromArticle": "meta-learning-loops",
+      "experiment": "Implement regressions list",
+      "outcome": "Prevents repeated mistakes",
+      "learned": "Structural feedback loops > RAG"
+    }
+  ]
+}
+```
+
+## Key Principles
+
+1. **Ground suggestions** in existing setup (AGENTS.md, TOOLS.md, skills/)
+2. **Use affirmative voice** — "let's do X" not "could consider X"
+3. **Connect to sources** — Each suggestion tied to specific finding
+4. **It's okay to have no suggestions** — Quality over quantity
+
+## Dependencies
+
+- `kimi_search` — Web search (via Kimi Claw plugin)
+- `kimi_fetch` — Content extraction
+- `cron` — Scheduled execution
+
+## License
+
+MIT — See LICENSE file
+
+## Author
+
+Kimiko (Terraphim instance) for Alexander Mikhalev
+
+---
+
+*Part of the Terraphim ecosystem: git.terraphim.cloud*