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

docs/src/guide/getting-started.md

@@ -0,0 +1,41 @@
+# Getting Started
+
+Kindred Create can be installed from prebuilt packages or built from source. This section covers both paths.
+
+## Quick start (prebuilt)
+
+Download the latest release from the [releases page](https://git.kindred-systems.com/kindred/create/releases).
+
+**Debian/Ubuntu:**
+```bash
+sudo apt install ./kindred-create_*.deb
+```
+
+**AppImage:**
+```bash
+chmod +x KindredCreate-*.AppImage
+./KindredCreate-*.AppImage
+```
+
+## Quick start (from source)
+
+```bash
+git clone --recursive ssh://git@git.kindred-systems.com:2222/kindred/create.git
+cd create
+pixi run configure
+pixi run build
+pixi run freecad
+```
+
+See [Installation](./installation.md) for prebuilt package details and [Building from Source](./building.md) for the full development setup.
+
+## First run
+
+On first launch, Kindred Create:
+
+1. Loads **ztools** commands and the **Silo** workbench via the Create bootstrap module
+2. Opens the **PartDesign** workbench as the default (with context-driven toolbars)
+3. Prompts for Silo server configuration if not yet set up
+4. Checks for application updates in the background (after ~10 seconds)
+
+If the Silo server is not available, Kindred Create operates normally with local file operations. The Silo features activate once a server is configured.