fix(hooks): add bash-file-read-guard to warn agents against cat/head/tail (fixes #2096)

src/plugin/hooks/create-tool-guard-hooks.ts

@@ -11,6 +11,7 @@ import {
   createRulesInjectorHook,
   createTasksTodowriteDisablerHook,
   createWriteExistingFileGuardHook,
+  createBashFileReadGuardHook,
   createHashlineReadEnhancerHook,
   createReadImageResizerHook,
   createJsonErrorRecoveryHook,
@@ -33,6 +34,7 @@ export type ToolGuardHooks = {
   rulesInjector: ReturnType<typeof createRulesInjectorHook> | null
   tasksTodowriteDisabler: ReturnType<typeof createTasksTodowriteDisablerHook> | null
   writeExistingFileGuard: ReturnType<typeof createWriteExistingFileGuardHook> | null
+  bashFileReadGuard: ReturnType<typeof createBashFileReadGuardHook> | null
   hashlineReadEnhancer: ReturnType<typeof createHashlineReadEnhancerHook> | null
   jsonErrorRecovery: ReturnType<typeof createJsonErrorRecoveryHook> | null
   readImageResizer: ReturnType<typeof createReadImageResizerHook> | null
@@ -101,6 +103,10 @@ export function createToolGuardHooks(args: {
     ? safeHook("write-existing-file-guard", () => createWriteExistingFileGuardHook(ctx))
     : null
 
+  const bashFileReadGuard = isHookEnabled("bash-file-read-guard")
+    ? safeHook("bash-file-read-guard", () => createBashFileReadGuardHook())
+    : null
+
   const hashlineReadEnhancer = isHookEnabled("hashline-read-enhancer")
     ? safeHook("hashline-read-enhancer", () => createHashlineReadEnhancerHook(ctx, { hashline_edit: { enabled: pluginConfig.hashline_edit ?? false } }))
     : null
@@ -126,6 +132,7 @@ export function createToolGuardHooks(args: {
     rulesInjector,
     tasksTodowriteDisabler,
     writeExistingFileGuard,
+    bashFileReadGuard,
     hashlineReadEnhancer,
     jsonErrorRecovery,
     readImageResizer,

src/plugin/tool-execute-before.ts

@@ -45,6 +45,7 @@ export function createToolExecuteBeforeHandler(args: {
     await hooks.questionLabelTruncator?.["tool.execute.before"]?.(input, output)
     await hooks.claudeCodeHooks?.["tool.execute.before"]?.(input, output)
     await hooks.nonInteractiveEnv?.["tool.execute.before"]?.(input, output)
+    await hooks.bashFileReadGuard?.["tool.execute.before"]?.(input, output)
     await hooks.commentChecker?.["tool.execute.before"]?.(input, output)
     await hooks.directoryAgentsInjector?.["tool.execute.before"]?.(input, output)
     await hooks.directoryReadmeInjector?.["tool.execute.before"]?.(input, output)