{
  "schemaVersion": 1,
  "kind": "zero-provenance-surface-matrix",
  "surfaces": [
    {
      "surface": "Identifier reads",
      "action": "Preserve stored provenance or synthesize direct ref provenance",
      "owners": [
        "expr_value_provenance",
        "expr_reference_provenance",
        "type_value_provenance_from_place"
      ],
      "fixtures": {
        "fail": []
      }
    },
    {
      "surface": "Field reads",
      "action": "Project provenance through value_path and root storage paths",
      "owners": [
        "expr_reference_provenance",
        "place_storage_value_provenance_under_path"
      ],
      "fixtures": {
        "fail": []
      }
    },
    {
      "surface": "Index reads",
      "action": "Project indexed provenance and widen uncertain array paths to [*]",
      "owners": [
        "expr_reference_provenance",
        "origin_path_join",
        "origin_path_overlaps"
      ],
      "fixtures": {
        "fail": []
      }
    },
    {
      "surface": "Direct borrows",
      "action": "Create provenance for the borrowed place and check lexical conflicts",
      "owners": [
        "expr_value_provenance",
        "check_borrow_conflict_at"
      ],
      "fixtures": {
        "fail": []
      }
    },
    {
      "surface": "Mutable borrows",
      "action": "Create mutable provenance and reject overlapping mutable/shared borrows",
      "owners": [
        "expr_value_provenance",
        "check_borrow_conflict_at",
        "check_read_not_mutably_borrowed"
      ],
      "fixtures": {
        "fail": []
      }
    },
    {
      "surface": "Shape literals",
      "action": "Preserve field provenance under field paths",
      "owners": [
        "expr_reference_provenance",
        "value_provenance_add_all_with_prefix"
      ],
      "fixtures": {
        "fail": []
      }
    },
    {
      "surface": "Array literals",
      "action": "Preserve literal element provenance under precise paths and widen unknown paths to [*]",
      "owners": [
        "expr_reference_provenance",
        "value_provenance_add_all_with_prefix"
      ],
      "fixtures": {
        "fail": []
      }
    },
    {
      "surface": "Maybe<T> values",
      "action": "Preserve nested provenance under .value",
      "owners": [
        "type_value_provenance_from_place",
        "maybe_unwrapped_value_provenance"
      ],
      "fixtures": {
        "fail": []
      }
    },
    {
      "surface": "Choice payloads",
      "action": "Preserve constructor payload provenance under case paths and bind match payload provenance from the matched case",
      "owners": [
        "type_value_provenance_from_place",
        "choice_constructor_value_provenance",
        "register_match_payload_binding_provenance"
      ],
      "fixtures": {
        "fail": [],
        "pass": [
          "conformance/native/pass/choice-payload-reference-return.0",
          "conformance/native/pass/choice-match-payload-reference-origin.0",
          "conformance/native/pass/choice-match-payload-return-origin.0"
        ]
      }
    },
    {
      "surface": "check unwraps",
      "action": "Project successful value provenance and apply checked-call storage effects",
      "owners": [
        "expr_reference_provenance",
        "apply_expr_call_storage_effects"
      ],
      "fixtures": {
        "fail": []
      }
    },
    {
      "surface": "rescue values",
      "action": "Merge fallible value and fallback provenance conservatively",
      "owners": [
        "expr_reference_provenance",
        "provenance_scope_snapshot_restore_optional_branch",
        "apply_expr_call_storage_effects"
      ],
      "fixtures": {
        "fail": []
      }
    },
    {
      "surface": "Primitive casts",
      "action": "Reject non-primitive casts before references can pass through",
      "owners": [
        "check_expr_expected",
        "expr_reference_provenance"
      ],
      "fixtures": {
        "fail": []
      }
    },
    {
      "surface": "Plain calls",
      "action": "Resolve through the shared call resolver, instantiate return provenance, and replay storage effects",
      "owners": [
        "resolve_provenance_call",
        "resolve_named_provenance_call",
        "call_result_value_provenance",
        "apply_checked_call_storage_effects"
      ],
      "fixtures": {
        "fail": [],
        "pass": [
          "conformance/native/pass/function-mutref-reference-store.0"
        ]
      }
    },
    {
      "surface": "Generic calls",
      "action": "Resolve generic bindings once and use the same summary pipeline",
      "owners": [
        "resolve_provenance_call",
        "resolve_named_provenance_call",
        "call_result_value_provenance",
        "function_provenance_summary"
      ],
      "fixtures": {
        "fail": [],
        "pass": [
          "conformance/native/pass/generic-mutref-reference-store.0"
        ]
      }
    },
    {
      "surface": "Shape namespace calls",
      "action": "Resolve static shape methods through the shared call resolver",
      "owners": [
        "resolve_provenance_call",
        "finish_shape_method_provenance_call",
        "build_shape_method_bindings",
        "apply_checked_call_storage_effects"
      ],
      "fixtures": {
        "fail": [],
        "pass": [
          "conformance/native/pass/static-method-namespace.0"
        ]
      }
    },
    {
      "surface": "Receiver calls",
      "action": "Treat self as parameter zero and replay receiver storage effects",
      "owners": [
        "resolve_provenance_call",
        "resolve_receiver_shape_provenance_call",
        "collect_effect_target_places",
        "apply_checked_call_storage_effects"
      ],
      "fixtures": {
        "fail": [],
        "pass": [
          "conformance/native/pass/receiver-method-reference-store.0"
        ]
      }
    },
    {
      "surface": "Static interface calls",
      "action": "Resolve constrained interface calls and concrete shape instantiations through the same summary/effect path",
      "owners": [
        "resolve_provenance_call",
        "resolve_concrete_constrained_shape_provenance_call",
        "resolve_constrained_interface_provenance_call",
        "finish_shape_method_provenance_call",
        "build_constrained_interface_method_bindings",
        "apply_checked_call_storage_effects"
      ],
      "fixtures": {
        "fail": [],
        "pass": [
          "conformance/native/pass/static-interface-return-reference-origin.0",
          "conformance/native/pass/static-interface-mutref-reference-store.0"
        ]
      }
    },
    {
      "surface": "Incomplete summaries",
      "action": "Reject incomplete mutable-parameter summaries instead of assuming no effects",
      "owners": [
        "function_provenance_summary",
        "apply_provenance_call_storage_effects"
      ],
      "fixtures": {
        "fail": []
      }
    },
    {
      "surface": "Let bindings",
      "action": "Install initializer provenance on the binding",
      "owners": [
        "register_borrow_binding",
        "scope_set_value_provenance"
      ],
      "fixtures": {
        "fail": [],
        "pass": [
          "conformance/native/pass/borrow-shadowed-root-reassignment.0"
        ]
      }
    },
    {
      "surface": "Assignments",
      "action": "Clear and install provenance at canonical target places",
      "owners": [
        "assignment_provenance_snapshot_clear",
        "update_borrow_assignment",
        "collect_assignment_target_places"
      ],
      "fixtures": {
        "fail": [],
        "pass": [
          "conformance/native/pass/assignment-rhs-side-effect-clears-old-origin.0"
        ]
      }
    },
    {
      "surface": "Field assignments",
      "action": "Preserve sibling provenance and update only the overwritten field path",
      "owners": [
        "collect_assignment_target_places",
        "update_borrow_assignment",
        "scope_set_value_provenance_path_in_scope"
      ],
      "fixtures": {
        "fail": [],
        "pass": [
          "conformance/native/pass/shape-field-reference-reassignment-clears-origin.0"
        ]
      }
    },
    {
      "surface": "Index assignments",
      "action": "Update indexed storage using precise or widened paths",
      "owners": [
        "collect_assignment_target_places",
        "update_borrow_assignment",
        "origin_path_overlaps",
        "origin_path_is_definitely_within"
      ],
      "fixtures": {
        "fail": [],
        "pass": [
          "conformance/native/pass/index-reference-assignment-clears-origin.0"
        ]
      }
    },
    {
      "surface": "Returns",
      "action": "Reject local-origin escapes and summarize return provenance for callers",
      "owners": [
        "check_return_reference_escape",
        "collect_return_value_provenance_from_stmt_vec",
        "function_provenance_summary"
      ],
      "fixtures": {
        "fail": []
      }
    },
    {
      "surface": "If joins",
      "action": "Merge provenance from continuing branches",
      "owners": [
        "provenance_scope_snapshot_restore_union",
        "collect_return_value_provenance_from_stmt_vec"
      ],
      "fixtures": {
        "fail": [],
        "pass": [
          "conformance/native/pass/branch-overwrite-away-reference-origin.0"
        ]
      }
    },
    {
      "surface": "Match joins",
      "action": "Merge provenance from continuing match arms",
      "owners": [
        "provenance_scope_snapshot_restore_union",
        "collect_return_value_provenance_from_stmt_vec"
      ],
      "fixtures": {
        "fail": [],
        "pass": [
          "conformance/native/pass/borrow-unreachable-match-return-origin.0"
        ]
      }
    },
    {
      "surface": "Loop-carried values",
      "action": "Merge before-loop and after-body provenance conservatively",
      "owners": [
        "provenance_scope_snapshot_restore_union",
        "collect_return_value_provenance_from_stmt_vec"
      ],
      "fixtures": {
        "fail": []
      }
    },
    {
      "surface": "Short-circuit expressions",
      "action": "Merge skipped and evaluated RHS storage effects conservatively",
      "owners": [
        "apply_expr_call_storage_effects",
        "provenance_scope_snapshot_restore_optional_branch"
      ],
      "fixtures": {
        "fail": []
      }
    },
    {
      "surface": "Early returns",
      "action": "Exclude unreachable post-return provenance from branch joins",
      "owners": [
        "collect_return_value_provenance_from_stmt_vec",
        "stmt_vec_guarantees_exit"
      ],
      "fixtures": {
        "pass": [
          "conformance/native/pass/borrow-unreachable-return-origin.0",
          "conformance/native/pass/borrow-unreachable-if-return-origin.0"
        ]
      }
    },
    {
      "surface": "Mutref aliases",
      "action": "Resolve alias targets to canonical storage before clearing or replaying effects",
      "owners": [
        "collect_effect_target_places",
        "collect_assignment_target_places",
        "actual_storage_value_provenance_under_path"
      ],
      "fixtures": {
        "fail": [],
        "pass": [
          "conformance/native/pass/mutref-alias-assignment-same-origin.0"
        ]
      }
    }
  ]
}