fix(extension): Retry auto-approve 흐름 복구 + Observer 형제 탐색 + thinking 필터링 (v0.5.79)

- WS response 파일에 _from_ws 마커 추가하여 processResponseFile 삭제 방지
- extractContextFromNearby에 sibling 탐색 추가 (AG Native DOM 구조 대응)
- thinking 블록 (max-h-[200px]) 필터링으로 내부 사고 릴레이 차단
- DOM 탐색 depth 5→10 확대 + pre.font-mono 우선 탐색
- 사용자 메시지 셀렉터 (.select-text.rounded-lg) 추가

extension/out/extension.js

@@ -397,6 +397,23 @@ async function activate(context) {
                     return;
                 }
                 // Normal approval — tryApprovalStrategies
+                // v22: ALSO write response file so Observer's pollResponseGroup can click
+                // the correct button (with exact button_index). Without this, only the
+                // imprecise pollTriggerClick fallback was used for WS-path responses.
+                const responseDir = path.join(bridgePath, 'response');
+                if (!fs.existsSync(responseDir)) {
+                    fs.mkdirSync(responseDir, { recursive: true });
+                }
+                const respPayload = {
+                    request_id: data.request_id,
+                    approved,
+                    button_index: data.button_index ?? 0,
+                    step_type: stepType,
+                    project_name: projectName,
+                    _from_ws: true,
+                };
+                fs.writeFileSync(path.join(responseDir, `${data.request_id}.json`), JSON.stringify(respPayload), 'utf-8');
+                logToFile(`[WS-RESPONSE] Response file written for pollResponseGroup: ${data.request_id?.substring(0, 12)}`);
                 const approvalCtx = (0, step_probe_1.getApprovalContext)();
                 logToFile(`[WS-RESPONSE] Triggering approval: approved=${approved} session=${approvalCtx.sessionId.substring(0, 8)} stepType=${stepType} stepIndex=${approvalCtx.stepIndex}`);
                 (0, step_probe_1.tryApprovalStrategies)(approved, approvalCtx.sessionId, stepType, approvalCtx.stepIndex)