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

tests/fixtures/sample_ingest.json

@@ -0,0 +1,72 @@
+{
+  "protocol_version": "bangwen/v1",
+  "source_id": "yn.yuxi.rszk",
+  "batch_id": "test-batch-001",
+  "collector": {
+    "name": "yuxi_test_worker",
+    "runtime": "python/3.12",
+    "auth_status": "none",
+    "duration_ms": 120,
+    "error_message": null
+  },
+  "items": [
+    {
+      "url": "https://www.yuxi.gov.cn/yxs/rszk/20261023/1001.html",
+      "url_hash": null,
+      "title": "2026年玉溪市事业单位公开招聘工作人员公告",
+      "kind": "招聘",
+      "employer": "玉溪市人力资源和社会保障局",
+      "employer_type": "事业单位",
+      "published_at": "2026-10-23",
+      "apply_start": "2026-10-24T09:00:00Z",
+      "apply_end": "2026-11-05T18:00:00Z",
+      "region_hint": "云南省玉溪市红塔区",
+      "body_text": "为进一步加强玉溪市事业单位人才队伍建设，决定开展公开招聘工作。各用人单位具体岗位及条件详见附件岗位计划表。",
+      "attachments": [
+        {
+          "name": "2026年玉溪市事业单位招聘岗位表.xlsx",
+          "url": "https://www.yuxi.gov.cn/files/20261023/posts.xlsx",
+          "mime": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
+        }
+      ],
+      "positions": [
+        {
+          "post_code": "001",
+          "dept": "市信息中心",
+          "post_name": "系统架构与运维管理岗",
+          "headcount": 1,
+          "education_min": "本科",
+          "degree_required": true,
+          "majors": ["计算机科学与技术", "软件工程", "网络工程"],
+          "major_unlimited": false,
+          "age_max": 35,
+          "bianzhi": "全额事业编制",
+          "salary_min": null,
+          "salary_max": null,
+          "work_city": "玉溪市",
+          "other_req": "具有2年以上生产环境维护经验",
+          "extract_method": "edge_python",
+          "confidence": 1.0
+        },
+        {
+          "post_code": "002",
+          "dept": "市统计局综合科",
+          "post_name": "数据分析岗",
+          "headcount": 2,
+          "education_min": "硕士",
+          "degree_required": true,
+          "majors": ["统计学", "数学与应用数学"],
+          "major_unlimited": false,
+          "age_max": 30,
+          "bianzhi": "全额事业编制",
+          "salary_min": null,
+          "salary_max": null,
+          "work_city": "玉溪市",
+          "other_req": "熟练掌握 Python 或 R",
+          "extract_method": "edge_python",
+          "confidence": 1.0
+        }
+      ]
+    }
+  ]
+}