feat(v2.7.0): add provenance, confidence, and reproducibility metadata

* add result provenance across major sections
* introduce confidence levels for ambiguous outputs
* distinguish observed facts from inferred summaries
* expand snapshot metadata for reproducibility
* improve error classification and partial snapshot handling
* include provenance and confidence in export
* add local notes for tracked domains and history

1 files changed, 7 insertions, 0 deletions

diff --git a/DomainDig/AppVersion.swift b/DomainDig/AppVersion.swift
new file mode 100644
index 0000000..a1516b8
--- /dev/null
+++ b/DomainDig/AppVersion.swift
@@ -0,0 +1,7 @@
+import Foundation
+
+enum AppVersion {
+    static var current: String {
+        "2.7.0"
+    }
+}