tracking: read the ledger's version, not just write it; clear owned on any block; channel-correct prune recovery

src/core/model/bank_model.cpp

@@ -1,8 +1,7 @@
 #include "core/model/bank_model.h"
 
-#include <cctype>
-
 #include "core/json/json.h"
+#include "core/util/relative_path.h"
 
 // bank_model implementation. JSON rides on the shared core/json lexical layer;
 // only the Sample/index DOMAIN grammar lives here. Doubles are emitted with 17
@@ -44,22 +43,7 @@ bool Sample::operator==(const Sample& o) const {
            provenance == o.provenance && createdTimestamp == o.createdTimestamp;
 }
 
-// -- path invariant -------------------------------------------------------
-
-// Rejects absolute paths rather than normalizing them: the pure model has no
-// knowledge of the project root, so any "normalization" would be a guess that
-// could point at the wrong file. Covers POSIX ("/x"), Windows drive ("C:\x",
-// "C:/x", "C:foo" drive-relative), and UNC ("\\host\share") forms. Any leading
-// <alpha>: is rejected regardless of what follows — drive-relative paths
-// ("C:foo.wav") resolve against the drive's current directory, not the project
-// root, so they violate relative-paths-only just as much as "C:\foo.wav" does.
-static bool isAbsolutePath(const std::string& p) {
-    if (p.empty()) return false;
-    if (p[0] == '/' || p[0] == '\\') return true;          // POSIX root or UNC
-    if (p.size() >= 2 && std::isalpha(static_cast<unsigned char>(p[0])) && p[1] == ':')
-        return true;                                        // Windows drive (C:\, C:/, C:foo, C:)
-    return false;
-}
+using util::isAbsolutePath;
 
 // -- BankModel ------------------------------------------------------------