fix: restrict auto-accept to plan mode only, block AskUserQuestion prompts

The auto-accept feature was too aggressive - it would press Enter for any
silence without a completion message, including AskUserQuestion prompts.
Now uses the elicitation_dialog notification hook to detect when Claude is
asking a question, and blocks auto-accept in that case. Only plan mode
approvals (silence with no completion message AND no elicitation signal)
trigger auto-accept.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/hooks-config.ts

@@ -36,6 +36,10 @@ export function generateHooksConfig(): { hooks: Record<string, unknown[]> } {
           matcher: 'permission_prompt',
           hooks: [{ type: 'command', command: curlCmd('permission_prompt'), timeout: 10000 }],
         },
+        {
+          matcher: 'elicitation_dialog',
+          hooks: [{ type: 'command', command: curlCmd('elicitation_dialog'), timeout: 10000 }],
+        },
       ],
       Stop: [
         {