Merge OrbitOS into project — one install, everything ready

- Added 15 OrbitOS skills (bundled in skills/orbitos/)
- Added vault structure templates (views, templates, prompts)
- Added install.sh (macOS + Linux)
- Removed references/orbitos-skills.md (no longer needed)
- Updated README: 30 skills total, unified install flow

Total: 9 mm* + 6 dependencies + 15 orbitos = 30 skills

skills/orbitos/orbites-json-canvas/SKILL.md

@@ -0,0 +1,62 @@
+---
+name: orbites-json-canvas
+description: Create JSON Canvas files (.canvas) — visual mind maps, flowcharts, and boards for Obsidian. Use when working with .canvas files in OrbitOS.
+---
+# OrbitOS: JSON Canvas Reference
+
+JSON Canvas is an open format for infinite canvas data (`.canvas` files). [Spec 1.0](https://jsoncanvas.org/spec/1.0/)
+
+## Structure
+
+```json
+{
+  "nodes": [],
+  "edges": []
+}
+```
+
+## Node Types
+
+### Text
+```json
+{ "id": "unique-id", "type": "text", "x": 0, "y": 0, "width": 400, "height": 200, "text": "## Title\nMarkdown content" }
+```
+
+### File
+```json
+{ "id": "unique-id", "type": "file", "x": 500, "y": 0, "width": 400, "height": 300, "file": "Notes/Note.md", "subpath": "#Heading" }
+```
+
+### Link
+```json
+{ "id": "unique-id", "type": "link", "x": 1000, "y": 0, "width": 400, "height": 200, "url": "https://example.com" }
+```
+
+### Group
+```json
+{ "id": "unique-id", "type": "group", "x": -50, "y": -50, "width": 1000, "height": 600, "label": "Section", "color": "4" }
+```
+
+## Edges
+
+```json
+{
+  "id": "edge-id",
+  "fromNode": "node1-id",
+  "fromSide": "right",
+  "toNode": "node2-id",
+  "toSide": "left",
+  "toEnd": "arrow",
+  "color": "1",
+  "label": "leads to"
+}
+```
+
+- Sides: `top`, `right`, `bottom`, `left`
+- Ends: `none`, `arrow`
+- Colors: `"1"`=Red, `"2"`=Orange, `"3"`=Yellow, `"4"`=Green, `"5"`=Cyan, `"6"`=Purple
+- Also supports hex colors: `"#FF0000"`
+
+## Z-Index
+
+First node = bottom layer, last node = top layer.