feat: enhance commands system and ruler integration (#11)

- Add commands:copy script to package.json for easy command file copying
- Copy all command documentation to .ruler directory
- Regenerate ruler instructions for multiple AI assistants (Cursor, Claude, Gemini, etc.)
- Update various tool configurations (.vscode, .github, .idx, etc.)
- Add new configuration files for additional AI tools (Goose, Junie, OpenHands)
- Clean up deprecated ruler files (pr-creation.md, pr-labeling.md)

🤖 Generated with Claude

Author: shunkakinoki

.augment/rules/ruler_augment_instructions.md

@@ -0,0 +1,51 @@
+{
+  "mcp": {
+    "XcodeBuildMCP": {
+      "command": "npx",
+      "args": [
+        "-y",
+        "xcodebuildmcp@latest"
+      ]
+    },
+    "Serena": {
+      "command": "uv",
+      "args": [
+        "run",
+        "serena",
+        "mcp"
+      ]
+    },
+    "Linear": {
+      "command": "npx",
+      "args": [
+        "-y",
+        "mcp-remote",
+        "https://mcp.linear.app/sse"
+      ]
+    },
+    "GitHub": {
+      "command": "npx",
+      "args": [
+        "-y",
+        "mcp-remote",
+        "https://api.githubcopilot.com/mcp/"
+      ]
+    },
+    "figma-mcp": {
+      "command": "npx",
+      "args": [
+        "-y",
+        "mcp-remote",
+        "http://127.0.0.1:3845/sse"
+      ]
+    },
+    "beeper": {
+      "command": "npx",
+      "args": [
+        "-y",
+        "mcp-remote",
+        "http://localhost:23373/v0/mcp"
+      ]
+    }
+  }
+}