feat: initialize bangwen recruitment aggregation and search engine

- Rust core engine with HTTP ingestion gateway, hybrid search, and white-box resume matching
- Python edge collectors supporting declarative TOML and specialized adapters
- PostgreSQL schema migrations with pgvector embedding support
- Hardened security controls: strict CSP, terminal sanitization, and input boundary validation
- Multi-service container orchestration with dedicated non-root execution

collectors/config.example.toml

@@ -0,0 +1,31 @@
+# ==============================================================================
+# Bangwen 采集器配置文件模板 (TOML)
+# ==============================================================================
+
+[runner]
+# 自动采集周期（小时）
+schedule_interval_hours = 6
+
+# 并发抓取的不同目标域名数（同一域名内部严格排队串行，防止政务网封禁 IP）
+domain_concurrency = 3
+
+# 同一域名下连续抓取不同栏目时的礼貌等待时间（秒）
+domain_delay_seconds = 3.0
+
+# 核心网关推流地址
+core_ingest_url = "http://core:8080/api/v1/ingest"
+
+[filter]
+# 1. 启用的省份 (两字母代码，如 "yn", "sc"；留空表示全部省份全量收录)
+provinces = ["yn", "sc"]
+
+# 2. 包含的来源通配符 (如 ["yn.*", "sc.chengdu.*"]；留空表示不限制)
+include = []
+
+# 3. 来源站点性质标签 (如 ["sydw", "gwy", "provincial", "municipal"]；留空表示不限制)
+# 注意：医疗、教师等具体岗位通常包含在综合招考网中，采集层应保持全量抓取，
+# 具体的医疗/教育岗位请在「检索端」或「推送端」按岗位内容/专业进行筛选。
+tags = []
+
+# 4. 排除的来源黑名单 (如 ["*.deprecated"]；优先剔除)
+exclude = []