fix(install): harden Claude settings lifecycle

scripts/lib/install-targets/helpers.js

@@ -1,6 +1,10 @@
 const fs = require('fs');
 const os = require('os');
 const path = require('path');
+const {
+  CLAUDE_HOOKS_CONFIG_PATH,
+  getClaudeSettingsPath,
+} = require('../install/claude-settings');
 
 const PLATFORM_SOURCE_PATH_OWNERS = Object.freeze({
   '.claude-plugin': 'claude',
@@ -146,6 +150,42 @@ function createRemappedOperation(adapter, moduleId, sourceRelativePath, destinat
   });
 }
 
+function planClaudeHooksOperations(adapter, module, input) {
+  const operations = [
+    createRemappedOperation(
+      adapter,
+      module.id,
+      CLAUDE_HOOKS_CONFIG_PATH,
+      getClaudeSettingsPath(adapter.resolveRoot(input)),
+      {
+        kind: 'update-claude-settings',
+        strategy: 'merge-hook-ids',
+      }
+    ),
+  ];
+
+  if (!input.repoRoot) {
+    return operations;
+  }
+
+  const sourceHooksRoot = path.join(input.repoRoot, 'hooks');
+  if (!fs.existsSync(sourceHooksRoot)) {
+    return operations;
+  }
+
+  return [
+    ...operations,
+    ...fs.readdirSync(sourceHooksRoot, { withFileTypes: true })
+      .filter(entry => entry.name !== 'hooks.json')
+      .sort((left, right) => left.name.localeCompare(right.name))
+      .map(entry => adapter.createScaffoldOperation(
+        module.id,
+        path.join('hooks', entry.name),
+        input
+      )),
+  ];
+}
+
 function createNamespacedFlatRuleOperations(adapter, moduleId, sourceRelativePath, input = {}) {
   const normalizedSourcePath = normalizeRelativePath(sourceRelativePath);
   const sourceRoot = path.join(input.repoRoot || '', normalizedSourcePath);
@@ -373,4 +413,5 @@ module.exports = {
   createRemappedOperation,
   isForeignPlatformPath,
   normalizeRelativePath,
+  planClaudeHooksOperations,
 };