phase 1: copy Kindred-only files onto upstream/main (FreeCAD 1.2.0-dev)

Wholesale copy of all Kindred Create additions that don't conflict with
upstream FreeCAD code:

- kindred-icons/ (1444 Catppuccin Mocha SVG icon overrides)
- src/Mod/Create/ (Kindred Create workbench)
- src/Gui/ Kindred source files (FileOrigin, OriginManager,
  OriginSelectorWidget, CommandOrigin, BreadcrumbToolBar, EditingContext)
- src/Gui/Icons/ (Kindred branding and silo icons)
- src/Gui/PreferencePacks/KindredCreate/
- src/Gui/Stylesheets/ (KindredCreate.qss, images_dark-light/)
- package/ (rattler-build recipe)
- docs/ (architecture, guides, specifications)
- .gitea/ (CI workflows, issue templates)
- mods/silo, mods/ztools submodules
- .gitmodules (Kindred submodule URLs)
- resources/ (kindred-create.desktop, kindred-create.xml)
- banner-logo-light.png, CONTRIBUTING.md

.gitea/workflows/sync-silo-docs.yml

@@ -0,0 +1,53 @@
+name: Sync Silo Server Docs
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 6 * * *" # Daily at 06:00 UTC as fallback
+
+jobs:
+  sync:
+    runs-on: docs
+
+    steps:
+      - name: Checkout create repo
+        run: |
+          REPO_URL="http://gitea:3000/kindred/create.git"
+          if [ -d .git ]; then
+            git fetch "$REPO_URL" main
+            git checkout -f FETCH_HEAD
+          else
+            git clone --depth 1 --branch main "$REPO_URL" .
+          fi
+
+      - name: Clone Silo server docs
+        run: |
+          rm -rf /tmp/silo
+          git clone --depth 1 http://gitea:3000/kindred/silo.git /tmp/silo
+          mkdir -p docs/src/silo-server
+          cp /tmp/silo/docs/*.md docs/src/silo-server/
+          cp /tmp/silo/README.md docs/src/silo-server/overview.md
+          cp /tmp/silo/ROADMAP.md docs/src/silo-server/ROADMAP.md 2>/dev/null || true
+          cp /tmp/silo/frontend-spec.md docs/src/silo-server/frontend-spec.md 2>/dev/null || true
+          rm -rf /tmp/silo
+
+      - name: Check for changes
+        id: diff
+        run: |
+          git add docs/src/silo-server/
+          if git diff --cached --quiet; then
+            echo "changed=false" >> $GITHUB_OUTPUT
+          else
+            echo "changed=true" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Commit and push
+        if: steps.diff.outputs.changed == 'true'
+        run: |
+          git config user.name "Kindred Bot"
+          git config user.email "bot@kindred-systems.com"
+          git commit -m "docs: sync Silo server documentation
+
+          Auto-synced from kindred/silo main branch."
+          PUSH_URL="http://kindred-bot:${{ secrets.RELEASE_TOKEN }}@gitea:3000/kindred/create.git"
+          git push "$PUSH_URL" HEAD:main