feat: add native road parity baseline

.trellis/tasks/08-25-rc-p0-contract-baseline/task.json

@@ -0,0 +1,26 @@
+{
+  "id": "rc-p0-contract-baseline",
+  "name": "rc-p0-contract-baseline",
+  "title": "Phase 0：冻结契约与 parity 基线",
+  "description": "写死 native-road-package/v1 输入输出契约，并对两个有效区域建立逐文件 checksum 基线作为全案 oracle",
+  "status": "in_progress",
+  "dev_type": null,
+  "scope": null,
+  "package": null,
+  "priority": "P1",
+  "creator": "dingkang",
+  "assignee": "dingkang",
+  "createdAt": "2026-08-25",
+  "completedAt": null,
+  "branch": null,
+  "base_branch": "main",
+  "worktree_path": null,
+  "commit": null,
+  "pr_url": null,
+  "subtasks": [],
+  "children": [],
+  "parent": "08-25-road-compiler-extraction",
+  "relatedFiles": [],
+  "notes": "",
+  "meta": {}
+}