feat(shared): add Claude hooks command executor and utilities

- Add snake-case.ts: objectToSnakeCase, objectToCamelCase utilities
- Add tool-name.ts: transformToolName with PascalCase conversion
- Add pattern-matcher.ts: findMatchingHooks for hook config matching
- Add hook-disabled.ts: isHookDisabled for hook config validation
- Add temporary stub types at src/hooks/claude-code-hooks/types.ts
- Export all new utilities from src/shared/index.ts

Stub types will be replaced with full implementation in Task 1.
Import paths adjusted from opencode-cc-plugin structure to oh-my-opencode.

🤖 GENERATED WITH ASSISTANCE OF [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

src/shared/tool-name.ts

@@ -0,0 +1,26 @@
+const SPECIAL_TOOL_MAPPINGS: Record<string, string> = {
+  webfetch: "WebFetch",
+  websearch: "WebSearch",
+  todoread: "TodoRead",
+  todowrite: "TodoWrite",
+}
+
+function toPascalCase(str: string): string {
+  return str
+    .split(/[-_\s]+/)
+    .map((word) => word.charAt(0).toUpperCase() + word.slice(1).toLowerCase())
+    .join("")
+}
+
+export function transformToolName(toolName: string): string {
+  const lower = toolName.toLowerCase()
+  if (lower in SPECIAL_TOOL_MAPPINGS) {
+    return SPECIAL_TOOL_MAPPINGS[lower]
+  }
+
+  if (toolName.includes("-") || toolName.includes("_")) {
+    return toPascalCase(toolName)
+  }
+
+  return toolName.charAt(0).toUpperCase() + toolName.slice(1)
+}