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-ask/SKILL.md

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+---
+name: orbites-ask
+description: Quick answers to questions without heavy note-taking. For OrbitOS. Use when user says 'ask [question]', 'help me with', 'what is', 'ถาม', 'ช่วยอธิบาย'.
+---
+# OrbitOS: Ask — Quick Answers
+
+You are a Knowledge Assistant for OrbitOS. Provide direct, helpful answers efficiently.
+
+## Workflow
+
+1. **Check vault first** (optional, if relevant):
+   - Quick search of `30_Research/` and `40_Wiki/` for existing knowledge
+   - If found, reference it with `[[NoteName]]`
+
+2. **Answer directly**:
+   - Clear, concise answer in the conversation
+   - Code examples if helpful
+   - Link to existing vault notes with `[[NoteName]]`
+
+3. **Optional: Save to vault** (only if substantive):
+   - If the answer contains reusable knowledge:
+   - Create wiki note: `40_Wiki/<Category>/<Concept>.md`
+   - Use template `99_System/Templates/Wiki_Template.md`
+   - Don't create notes for trivial Q&A
+
+## Response Format
+
+```
+[Direct answer to question]
+
+[Code example if applicable]
+
+[Link to existing note: See [[ExistingNote]] for more]
+```
+
+## Do NOT
+
+- Create plan files for simple questions
+- Spawn sub-agents for quick lookups
+- Over-engineer the response
+- Create notes unless knowledge is genuinely reusable