docs: make /update skill discoverable, add auto version bumping

Add /update to skills tables in CLAUDE.md and REQUIREMENTS.md. Add
"Updating" section to README. Remove /add-telegram and /add-discord
from RFS (already exist). Add CI workflow to bump patch version on
source/container changes.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.github/workflows/bump-version.yml

@@ -0,0 +1,32 @@
+name: Bump version
+
+on:
+  push:
+    branches: [main]
+    paths: ['src/**', 'container/**']
+
+jobs:
+  bump-version:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/create-github-app-token@v1
+        id: app-token
+        with:
+          app-id: ${{ secrets.APP_ID }}
+          private-key: ${{ secrets.APP_PRIVATE_KEY }}
+
+      - uses: actions/checkout@v4
+        with:
+          token: ${{ steps.app-token.outputs.token }}
+
+      - name: Bump patch version
+        run: |
+          npm version patch --no-git-tag-version
+          git add package.json package-lock.json
+          git diff --cached --quiet && exit 0
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          VERSION=$(node -p "require('./package.json').version")
+          git commit -m "chore: bump version to $VERSION"
+          git pull --rebase
+          git push