fix: pipeline content tracking + topic article preview

db_helper.py: save_article now calculates and persists word_count
generator.py: run_creator_blocking sets word_count for HTML-imported articles
writer.py: fix title regex stripping content-leading numbers (35岁后→岁后)
trends.py: fix Baidu hot_score str/int type comparison crash
database.py: add missing content_tasks.org_id ALTER TABLE migration
schemas.py + topics.py: topic list API returns article_count + articles[] previews
topics.html: table view and card view show article badges with word counts, clickable to open preview

Ultraworked with Sisyphus

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

scripts/writer.py

@@ -557,7 +557,7 @@ class Writer:
                 line = line.strip()
                 if not line:
                     continue
-                line = re.sub(r'^\d+[.、)\s]+', '', line)
+                line = re.sub(r'^\d+[.、)）]\s*', '', line)
                 line = line.strip('*#- \t"\'"''"')
                 # 跳过思考/建议类输出（如"不如："、"或者："、"建议方案"等）
                 if re.match(r'^(不如|或者|建议|推荐|参考|方案[一二三]|第[一二三]种|以[下是]|标题[一二三]|选项)', line):