fuzz-target-every-parse: the §3.2 differential target — three parsers + skip_forward through the doc-hidden surfaces via shared invariants, 66 committed seeds + gitignore negation + README row; two real skip_forward findings fixed inline (division-by-zero/negative-interval wrap on sqlite+mem, i64 gap subtraction overflow on all three engines incl. pg) and registered as PROVENANCE D-38

fuzz/shared/Cargo.toml

@@ -6,6 +6,9 @@ edition = "2021"
 
 [dependencies]
 alkstore = { path = "../../alkstore" }
+alkstore-sqlite = { path = "../../alkstore-sqlite" }
+alkstore-postgres = { path = "../../alkstore-postgres" }
+alkstore-mem = { path = "../../alkstore-mem" }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"