fix: add python-pptx to requirements + fix BCG empty name filter

- requirements.txt: 加入 python-pptx（ADR-014 PPT 系統必要依賴，前次漏加）
- openclaw_bot_routes.py: BCG SQL 補 brand_name/area_name IS NOT NULL 過濾

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

requirements.txt

@@ -22,4 +22,5 @@ beautifulsoup4
 lxml
 prometheus-client
 python-telegram-bot[job-queue]
-paramiko               # ADR-013: AIOps SSH 跳板修復
+paramiko               # ADR-013: AIOps SSH 跳板修復
+python-pptx            # ADR-014: PPT 簡報系統

routes/openclaw_bot_routes.py

@@ -967,6 +967,8 @@ def query_vendor_bcg_data(yr: int = None, mo: int = None) -> dict:
                        SUM(profit_amt_curr) AS profit
                 FROM monthly_summary_analysis
                 WHERE sales_amt_curr > 0
+                  AND brand_name IS NOT NULL AND brand_name != ''
+                  AND area_name  IS NOT NULL AND area_name  != ''
                 {yr_filter} {mo_filter}
                 GROUP BY brand_name, area_name
                 ORDER BY sales DESC LIMIT 100