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/lane_lines.py

@@ -0,0 +1,34 @@
+"""Lane .lines.txt adapter."""
+from __future__ import annotations
+
+from pathlib import Path
+
+from as_platform.data.ingest.base import IngestAdapter, IngestContext, NormalizedDataset
+
+
+class LaneLinesAdapter(IngestAdapter):
+    format_id = "lane_lines"
+    projects = ("lane",)
+
+    def can_handle(self, ctx: IngestContext) -> bool:
+        root = ctx.source_path
+        return any(root.rglob("*.lines.txt"))
+
+    def inspect(self, ctx: IngestContext) -> NormalizedDataset:
+        root = ctx.source_path
+        line_files = list(root.rglob("*.lines.txt"))
+        split_counts = {"train": len(line_files), "val": 0, "test": 0}
+        warnings: list[str] = []
+        if not line_files:
+            warnings.append("no *.lines.txt found")
+        return NormalizedDataset(
+            format_id=self.format_id,
+            project=ctx.project,
+            task=ctx.task,
+            source_path=str(root),
+            split_counts=split_counts,
+            sample_count=len(line_files),
+            annotation_count=len(line_files),
+            artifacts=["*.lines.txt"],
+            warnings=warnings,
+        )