filter: separate the compiled bodies in the checksum, a name moving between them was invisible

src/storage/repositories/sources_repo.zig

@@ -111,9 +111,8 @@ pub const SourceStats = struct {
     skipped_regex_count: i64,
     skipped_unsupported_count: i64,
     /// Lowercase hex sha256 over the `.list` body, then the `.wild` body, then
-    /// the `.allow` body. The allow body is hashed last so an empty one leaves
-    /// the digest of a two-body compile unchanged, which is what keeps a
-    /// checksum written before exceptions were honoured valid.
+    /// the `.allow` body, each followed by `compiler.body_separator` so the
+    /// digest cannot confuse a name in one body with the same name in another.
     checksum: []const u8,
 };