fuzz-target-payload-codec: the §3.1 target — all five invariants in shared, thin fuzz_target wrapper, 97 committed seeds + gitignore negation + README row; placeholder bin replaced; serde (derive) added to shared

fuzz/Cargo.lock

@@ -26,6 +26,7 @@ version = "0.0.0"
 dependencies = [
  "alkstore",
  "arbitrary",
+ "serde",
  "serde_json",
 ]
 
@@ -153,6 +154,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4148590afebada386688f18773da617792bf2ef03ffc1e4cbd2b1d45b023e0ba"
 dependencies = [
  "serde_core",
+ "serde_derive",
 ]
 
 [[package]]