Add memory-viewer from silicondawn

- Web UI for browsing and editing OpenClaw memory files
- Cloned from https://github.com/silicondawn/memory-viewer
- Built and running on port 8901
- Features: file tree, markdown rendering, search, live reload
- Full access to MEMORY.md, daily notes, skills, automations

memory-viewer/.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,18 @@
+---
+name: Feature Request
+about: Suggest an idea for this project
+title: "[Feature] "
+labels: enhancement
+---
+
+## Problem
+A clear description of the problem or need. E.g., "I'm always frustrated when..."
+
+## Proposed Solution
+Describe the solution you'd like.
+
+## Alternatives Considered
+Any alternative solutions or features you've considered.
+
+## Additional Context
+Any other context, mockups, or screenshots.