Add KROW mobile release and paper design conventions documentation

- Introduced SKILL.md for KROW mobile release process detailing versioning, CHANGELOG management, GitHub Actions workflows, APK signing, and hotfix procedures.
- Added SKILL.md for KROW paper design conventions covering design tokens, component patterns, screen structure, and naming rules to ensure visual consistency across design files.

.agent/settings.local.json

@@ -0,0 +1,23 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(grep:*)",
+      "mcp__paper__get_basic_info",
+      "mcp__paper__get_screenshot",
+      "mcp__paper__get_tree_summary",
+      "mcp__paper__update_styles",
+      "mcp__paper__set_text_content",
+      "mcp__paper__get_computed_styles",
+      "mcp__paper__finish_working_on_nodes",
+      "mcp__paper__get_font_family_info",
+      "mcp__paper__rename_nodes",
+      "mcp__paper__write_html",
+      "mcp__paper__get_children",
+      "mcp__paper__create_artboard",
+      "mcp__paper__delete_nodes",
+      "mcp__paper__get_jsx",
+      "mcp__paper__get_node_info",
+      "mcp__paper__duplicate_nodes"
+    ]
+  }
+}