fix(result-contract-completion): enforce complete result provenance

include/fesa/io/abaqus/parser.hpp

@@ -2,6 +2,7 @@
 
 #include <filesystem>
 #include <optional>
+#include <string>
 #include <vector>
 
 #include <fesa/core/diagnostic.hpp>
@@ -12,6 +13,7 @@ namespace fesa {
 struct ParseDeckResult final {
     std::optional<ParsedDeck> deck;
     std::vector<Diagnostic> diagnostics;
+    std::string input_fingerprint;
 };
 
 [[nodiscard]] ParseDeckResult parse_deck(

include/fesa/io/hdf5/writer.hpp

@@ -60,6 +60,13 @@ struct Hdf5MetadataSnapshot final {
     std::string schema_version;
     std::string fesa_version;
     std::string unit_policy;
+    std::string input_source;
+    std::string input_fingerprint;
+};
+
+struct Hdf5InputIdentity final {
+    std::string source;
+    std::string fingerprint;
 };
 
 struct Hdf5SolverSettingsSnapshot final {
@@ -86,7 +93,8 @@ struct Hdf5ReadResult final {
 [[nodiscard]] std::vector<Diagnostic> write_hdf5(
     const std::filesystem::path& path,
     const Domain& domain,
-    const ResultDatabase& database);
+    const ResultDatabase& database,
+    const Hdf5InputIdentity& input_identity);
 
 [[nodiscard]] Hdf5ReadResult read_hdf5_results(
     const std::filesystem::path& path);