配置全面迁移数据库：PromptConfig、TaskConfig动态调度、敏感词/清洗规则/趋势映射/平台标签/痛点模板全部可编辑

- 新增 PromptConfig 模型 + API，支持提示词在线编辑（16条默认）
- 调度器动态读取 TaskConfig.schedule，admin 可调执行时间
- 新增 KeywordDomainMap、SensitiveWord、ContentCleanRule、TrendFieldMapping 表
- DOMAINS、TREND_DOMAIN_MAP、PLATFORM_TAGS、china_pains、RSS关键词、priority_weights 全部迁移到 DB
- tasks.html 重构：卡片网格+配置/产出/历史/提示词四个Tab，折叠显示
- 清理冗余代码：DEFAULT_PROMPTS死代码、collector.py unreachable代码、compliance_checker bug
- strip_thinking_html 改用 DB 规则优先

platform/backend/app/database.py

@@ -61,6 +61,49 @@ def init_db():
                 ("platform_configs", "min_words", "INTEGER DEFAULT 0"),
                 ("platform_configs", "max_words", "INTEGER DEFAULT 0"),
                 ("platform_configs", "website_url", "VARCHAR"),
+                ("task_logs", "module_id", "VARCHAR"),
+                ("task_logs", "error_trace", "TEXT"),
+                ("task_logs", "triggered_by", "VARCHAR DEFAULT 'scheduler'"),
+                ("task_logs", "result_data", "JSON DEFAULT '{}'::json"),
+                ("task_logs", "next_run_time", "TIMESTAMP"),
+                ("task_configs", "module_id", "VARCHAR UNIQUE"),
+                ("task_configs", "enabled", "BOOLEAN DEFAULT TRUE"),
+                ("task_configs", "params", "JSON DEFAULT '{}'::json"),
+                ("task_configs", "schedule", "VARCHAR"),
+                ("task_configs", "last_modified_by", "VARCHAR"),
+                ("prompt_configs", "key", "VARCHAR UNIQUE"),
+                ("prompt_configs", "module_id", "VARCHAR"),
+                ("prompt_configs", "category", "VARCHAR DEFAULT 'prompt'"),
+                ("prompt_configs", "version", "VARCHAR DEFAULT 'v1'"),
+                ("prompt_configs", "content", "TEXT"),
+                ("prompt_configs", "variables", "JSON DEFAULT '[]'::json"),
+                ("prompt_configs", "description", "VARCHAR"),
+                ("prompt_configs", "enabled", "BOOLEAN DEFAULT TRUE"),
+                ("prompt_configs", "temperature", "FLOAT"),
+                ("prompt_configs", "max_tokens", "INTEGER"),
+                ("prompt_configs", "created_by", "VARCHAR"),
+                ("keyword_domain_map", "id", "INTEGER PRIMARY KEY"),
+                ("keyword_domain_map", "pattern", "VARCHAR"),
+                ("keyword_domain_map", "domain", "VARCHAR"),
+                ("keyword_domain_map", "sort_order", "INTEGER DEFAULT 0"),
+                ("keyword_domain_map", "is_active", "BOOLEAN DEFAULT TRUE"),
+                ("sensitive_words", "id", "INTEGER PRIMARY KEY"),
+                ("sensitive_words", "word", "VARCHAR"),
+                ("sensitive_words", "category", "VARCHAR DEFAULT 'general'"),
+                ("sensitive_words", "is_active", "BOOLEAN DEFAULT TRUE"),
+                ("sensitive_words", "added_by", "VARCHAR"),
+                ("content_clean_rules", "id", "INTEGER PRIMARY KEY"),
+                ("content_clean_rules", "rule_type", "VARCHAR"),
+                ("content_clean_rules", "pattern", "TEXT"),
+                ("content_clean_rules", "description", "VARCHAR"),
+                ("content_clean_rules", "is_active", "BOOLEAN DEFAULT TRUE"),
+                ("content_clean_rules", "sort_order", "INTEGER DEFAULT 0"),
+                ("collector_categories", "pain_template", "TEXT"),
+                ("trend_field_mappings", "id", "INTEGER PRIMARY KEY"),
+                ("trend_field_mappings", "trend_keyword", "VARCHAR"),
+                ("trend_field_mappings", "field_name", "VARCHAR"),
+                ("trend_field_mappings", "sort_order", "INTEGER DEFAULT 0"),
+                ("trend_field_mappings", "is_active", "BOOLEAN DEFAULT TRUE"),
             ]:
                 try:
                     conn.execute(text(f"ALTER TABLE {table} ADD COLUMN IF NOT EXISTS {col} {typ}"))