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/pattern-matcher.ts

@@ -0,0 +1,29 @@
+import type { ClaudeHooksConfig, HookMatcher } from "../hooks/claude-code-hooks/types"
+
+export function matchesToolMatcher(toolName: string, matcher: string): boolean {
+  if (!matcher) {
+    return true
+  }
+  const patterns = matcher.split("|").map((p) => p.trim())
+  return patterns.some((p) => {
+    if (p.includes("*")) {
+      const regex = new RegExp(`^${p.replace(/\*/g, ".*")}$`, "i")
+      return regex.test(toolName)
+    }
+    return p.toLowerCase() === toolName.toLowerCase()
+  })
+}
+
+export function findMatchingHooks(
+  config: ClaudeHooksConfig,
+  eventName: keyof ClaudeHooksConfig,
+  toolName?: string
+): HookMatcher[] {
+  const hookMatchers = config[eventName]
+  if (!hookMatchers) return []
+
+  return hookMatchers.filter((hookMatcher) => {
+    if (!toolName) return true
+    return matchesToolMatcher(toolName, hookMatcher.matcher)
+  })
+}