chore: 初始版本提交 - 简化架构 + 轮询改造

- 移除 Motia Streams 实时通信，改用 3 秒轮询
- 简化前端代码，移除冗余组件
- 简化后端架构，准备 FastAPI 重构
- 更新 pixi.toml 环境配置
- 保留 bttoxin_digger_v5_repro 作为参考文档

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

docker/compose/docker-compose.test.yml

@@ -0,0 +1,18 @@
+# Use port 443 (HTTPS) which Tailscale typically allows
+
+services:
+  bttoxin:
+    image: bttoxin-pipeline:latest
+    container_name: bttoxin-pipeline
+    ports:
+      - "443:8000"  # Use HTTPS port 443
+    volumes:
+      - ../../jobs:/app/jobs
+    environment:
+      - JOBS_DIR=/app/jobs
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8000/api/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3