{
  "schema_version": 1,
  "updated_at": "2026-07-30T22:51:21+08:00",
  "status": "preparation",
  "migration_mode": "behavior_preserving_source_migration",
  "source_of_truth": "current_original_webapp_runtime_and_source",
  "source_root": ".",
  "target_root": null,
  "failed_roots": [
    "next"
  ],
  "current_slice": null,
  "last_checkpoint": "xiaobai-preservation-migration-charter-20260730",
  "next_action": "inventory_original_assets_and_propose_target_structure_before_copying_code",
  "authoritative_documents": [
    "AGENTS.md",
    "docs/migration/原版保真迁移总纲.md",
    "docs/migration/保真迁移账本.md",
    "docs/migration/next失败冻结记录.md"
  ],
  "hard_invariants": [
    "do_not_use_next_as_migration_source",
    "do_not_rewrite_existing_product_behavior",
    "do_not_change_technology_stack_without_explicit_user_approval",
    "preserve_visual_interaction_animation_calculation_and_data_semantics",
    "require_old_new_differential_evidence_for_every_slice",
    "keep_original_runtime_available",
    "do_not_delete_uncertain_code"
  ],
  "open_decisions": [
    "target_directory_name",
    "target_directory_structure",
    "migration_slice_order"
  ]
}