fix(hooks): add defensive null check for matcher.hooks to prevent Windows crash (#441)

src/hooks/claude-code-hooks/post-tool-use.ts

@@ -91,11 +91,12 @@ export async function executePostToolUseHooks(
 
     const startTime = Date.now()
 
-    for (const matcher of matchers) {
-      for (const hook of matcher.hooks) {
-        if (hook.type !== "command") continue
+     for (const matcher of matchers) {
+       if (!matcher.hooks || matcher.hooks.length === 0) continue
+       for (const hook of matcher.hooks) {
+         if (hook.type !== "command") continue
 
-        if (isHookCommandDisabled("PostToolUse", hook.command, extendedConfig ?? null)) {
+         if (isHookCommandDisabled("PostToolUse", hook.command, extendedConfig ?? null)) {
           log("PostToolUse hook command skipped (disabled by config)", { command: hook.command, toolName: ctx.toolName })
           continue
         }