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/data/ingest/base.py

@@ -0,0 +1,46 @@
+"""Data ingest adapter base abstractions."""
+from __future__ import annotations
+
+from abc import ABC, abstractmethod
+from dataclasses import asdict, dataclass, field
+from pathlib import Path
+from typing import Any
+
+
+@dataclass
+class IngestContext:
+    project: str
+    task: str | None
+    source_path: Path
+
+
+@dataclass
+class NormalizedDataset:
+    format_id: str
+    project: str
+    task: str | None
+    source_path: str
+    split_counts: dict[str, int] = field(default_factory=dict)
+    sample_count: int = 0
+    annotation_count: int = 0
+    artifacts: list[str] = field(default_factory=list)
+    warnings: list[str] = field(default_factory=list)
+    extra: dict[str, Any] = field(default_factory=dict)
+
+    def to_dict(self) -> dict[str, Any]:
+        return asdict(self)
+
+
+class IngestAdapter(ABC):
+    """Adapter interface for task-specific upload formats."""
+
+    format_id: str = "unknown"
+    projects: tuple[str, ...] = ()
+
+    @abstractmethod
+    def can_handle(self, ctx: IngestContext) -> bool:
+        raise NotImplementedError
+
+    @abstractmethod
+    def inspect(self, ctx: IngestContext) -> NormalizedDataset:
+        raise NotImplementedError