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/bug_report.md

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+---
+name: Bug Report
+about: Report a bug to help us improve
+title: "[Bug] "
+labels: bug
+---
+
+## Describe the Bug
+A clear and concise description of what the bug is.
+
+## Steps to Reproduce
+1. Go to '...'
+2. Click on '...'
+3. See error
+
+## Expected Behavior
+What you expected to happen.
+
+## Actual Behavior
+What actually happened.
+
+## Environment
+- OS: [e.g., macOS 15, Ubuntu 24.04]
+- Node.js version: [e.g., 22.x]
+- Browser: [e.g., Chrome 130]
+
+## Screenshots
+If applicable, add screenshots.

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.

memory-viewer/.github/workflows/docker-build.yml

@@ -0,0 +1,123 @@
+name: Build and Push Docker Image
+
+on:
+  push:
+    branches: [ main ]
+    tags: [ 'v*' ]
+  pull_request:
+    branches: [ main ]
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Image tag (default: latest)'
+        required: false
+        default: 'latest'
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        include:
+          - platform: linux/amd64
+            runner: ubuntu-latest
+            suffix: amd64
+          - platform: linux/arm64
+            runner: ubuntu-24.04-arm
+            suffix: arm64
+    runs-on: ${{ matrix.runner }}
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run Tests
+        run: npm test
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Container Registry
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=ref,event=branch,suffix=-${{ matrix.suffix }}
+            type=ref,event=pr,suffix=-${{ matrix.suffix }}
+            type=semver,pattern={{version}},suffix=-${{ matrix.suffix }}
+            type=sha,prefix={{branch}}-,suffix=-${{ matrix.suffix }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha,scope=${{ matrix.suffix }}
+          cache-to: type=gha,mode=max,scope=${{ matrix.suffix }}
+          platforms: ${{ matrix.platform }}
+
+  manifest:
+    needs: build
+    if: github.event_name != 'pull_request'
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Log in to Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=ref,event=branch
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+            type=sha,prefix={{branch}}-
+            type=raw,value=${{ inputs.tag }},enable=${{ github.event_name == 'workflow_dispatch' }}
+
+      - name: Create and push multi-arch manifest
+        run: |
+          TAGS="${{ steps.meta.outputs.tags }}"
+          for TAG in $TAGS; do
+            echo "Creating manifest for $TAG"
+            docker manifest create "$TAG" \
+              "${TAG}-amd64" \
+              "${TAG}-arm64" || true
+            docker manifest push "$TAG" || true
+          done