docs: add AI collaboration contract and fix KegiatanCard image handling - bump to 0.1.48

MIND/PLAN/ai-collaboration-contract.md

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+# Plan: Add AI Collaboration Contract and Fix UI Issues
+
+## Background
+- Need a clear contract for AI collaboration to prevent "exponential bugs".
+- UI fix for `KegiatanCard` to handle missing images gracefully.
+
+## Objectives
+- Add `AI-CONTRACT.md` with guidelines.
+- Link `AI-CONTRACT.md` in `CLAUDE.md`.
+- Fix `KegiatanCard.tsx` image rendering.
+- Bump version to 0.1.48.
+
+## Implementation Steps
+1. Create `AI-CONTRACT.md`.
+2. Update `CLAUDE.md`.
+3. Update `KegiatanCard.tsx`.
+4. Bump version in `package.json`.
+5. Verify build.
+6. Commit and push.