v2.2.267: 채팅 사이드바 Pixel Office 배너 제거 (화면 점유 해소)

채팅 위에 항상 떠 있던 Pixel Office 카드(캐릭터·Agent/Status/Task 표)가
화면을 과도하게 가리는 문제 — 시각 레이어만 제거, 기능은 보존:

제거 (media 웹뷰 시각 레이어):
- sidebar.html: #pixelOffice 배너 DOM 블록
- sidebar.js: Pixel Office 렌더러 IIFE + pixelOfficeUpdate/officeSnapshot 핸들러 no-op 화
- sidebar.css: .pixel-office / .po-* 스타일 전부

보존 (백엔드·별도 패널):
- 파이프라인 상태 추적(pixelOfficeOn*) 및 브로드캐스트 전부 유지 — 에이전트 동작 무영향
- 풀스크린 Astra Office 패널(Astra: Open Pixel Office (Full Screen)) 그대로 동작
- 설정 pixelOffice.enabled/bubbles 유지, 설명만 풀스크린 패널 전용으로 정정

(검증: node --check ✓ · 잔여 참조 grep 0 ✓ · tsc ✓ · jest 728/730 ✓)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

package.json

@@ -2,7 +2,7 @@
   "name": "astra",
   "displayName": "Astra",
   "description": "The personal intelligence layer for Antigravity and VS Code. A private cognitive partner for deep project context, memory, and proactive strategic decision-making.",
-  "version": "2.2.266",
+  "version": "2.2.267",
   "publisher": "g1nation",
   "license": "MIT",
   "icon": "assets/icon.png",
@@ -1074,12 +1074,12 @@
         "g1nation.company.pixelOffice.enabled": {
           "type": "boolean",
           "default": true,
-          "description": "Show the Pixel Office visualisation panel above the chat — a small pixel-office-style display that mirrors the agent's current pipeline status (analyzing, need_clarification, executing, reviewing, waiting_approval, done, etc.) and the current task / contract / open questions. UI layer only; turning it off does not change any agent behaviour."
+          "description": "Enable Pixel Office agent-status tracking (feeds the full-screen Astra Office panel opened via 'Astra: Open Pixel Office (Full Screen)'). The in-chat banner was removed in v2.2.267 to free screen space. UI layer only; turning it off does not change any agent behaviour."
         },
         "g1nation.company.pixelOffice.bubbles": {
           "type": "boolean",
           "default": true,
-          "description": "Show short comic-style speech bubbles above the Pixel Office character on status changes / key events (e.g. '코드 들어간다', '잠깐, 이건 다시 보자', '좋아, 끝났다!'). Bubbles are purely narrative — they never influence the agent's decisions. Disable for a quieter UI."
+          "description": "Show short comic-style speech bubbles above Pixel Office characters on status changes / key events (full-screen Astra Office panel only — the in-chat banner was removed in v2.2.267). Bubbles are purely narrative — they never influence the agent's decisions. Disable for a quieter UI."
         },
         "g1nation.google.clientId": {
           "type": "string",