feat: Unified Ingest SDK for DMS/ADAS promote, cuboid export and 3D fit

Replace subprocess build with promote_batch SDK, add ADAS cuboid export/fit/validate pipeline, stage normalization, and offline unit tests wired into smoke_labeling_api.

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

platform/as_platform/data/promote/base.py

@@ -0,0 +1,56 @@
+"""Pack promote adapter base types."""
+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 PromoteContext:
+    project: str
+    task: str
+    batch: str
+    pack: str
+    batch_dir: Path
+    project_root: Path
+    dry_run: bool = False
+    skip_validate: bool = False
+    allow_partial_3d: bool = False
+    refresh: bool = True
+    extra: dict[str, Any] = field(default_factory=dict)
+
+
+@dataclass
+class PromoteResult:
+    ok: bool
+    project: str
+    task: str
+    batch: str
+    pack: str
+    dest_path: str = ""
+    images: int = 0
+    labels: int = 0
+    manifest_paths: list[str] = field(default_factory=list)
+    warnings: list[str] = field(default_factory=list)
+    stage: str = "ingested"
+    detail: dict[str, Any] = field(default_factory=dict)
+
+    def to_dict(self) -> dict[str, Any]:
+        out = asdict(self)
+        out["ok"] = self.ok
+        return out
+
+
+class PackPromoteAdapter(ABC):
+    project: str = ""
+
+    @abstractmethod
+    def promote(self, ctx: PromoteContext) -> PromoteResult:
+        raise NotImplementedError
+
+    @abstractmethod
+    def validate(self, ctx: PromoteContext) -> list[str]:
+        """Return list of error messages; empty means pass."""
+        raise NotImplementedError