feat: initial HSAP platform

Huaxu Sentinel Active Safety Platform with embedded algorithm code,
Docker Compose setup, and vendored dataset scaffolds for clone-and-run.

Co-authored-by: Cursor <cursoragent@cursor.com>

platform/as_platform/redis/bus.py

@@ -0,0 +1,51 @@
+"""Redis 连接与 Job 事件总线。"""
+from __future__ import annotations
+
+import json
+from functools import lru_cache
+from typing import Any
+
+from as_platform.config import JOB_QUEUE_KEY, REDIS_URL
+
+try:
+    import redis
+except ImportError:
+    redis = None  # type: ignore
+
+
+@lru_cache(maxsize=1)
+def get_redis():
+    if not REDIS_URL or redis is None:
+        return None
+    return redis.from_url(REDIS_URL, decode_responses=True)
+
+
+def ping_redis() -> bool:
+    try:
+        r = get_redis()
+        return bool(r and r.ping())
+    except Exception:
+        return False
+
+
+def publish(event: str, payload: dict[str, Any]) -> None:
+    r = get_redis()
+    if not r:
+        return
+    r.publish("as:events", json.dumps({"event": event, **payload}, ensure_ascii=False))
+
+
+def push_job(job_id: str) -> None:
+    r = get_redis()
+    if not r:
+        raise RuntimeError("Redis 未配置，无法使用 worker 模式")
+    r.lpush(JOB_QUEUE_KEY, job_id)
+    publish("job.queued", {"job_id": job_id})
+
+
+def pop_job(timeout: int = 5) -> str | None:
+    r = get_redis()
+    if not r:
+        return None
+    item = r.brpop(JOB_QUEUE_KEY, timeout=timeout)
+    return item[1] if item else None