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

vault-structure/views/inbox.yml

@@ -0,0 +1,12 @@
+name: Inbox
+icon: inbox
+color: "#f59e0b"
+sort: "created:desc"
+filters:
+  all:
+    - field: type
+      op: equals
+      value: inbox
+    - field: status
+      op: equals
+      value: pending