feat(macros): make manifest topic drift a compile-time failure

.github/workflows/ci.yml

@@ -68,7 +68,7 @@ jobs:
       - uses: taiki-e/install-action@43aecc8d72668fbcfe75c31400bc4f890f1c5853 # v2.83.2
         with:
           tool: nextest
-      # Build all 10 guest wasms ONCE (release/wasm32-wasip2): the single source of
+      # Build all 11 guest wasms ONCE (release/wasm32-wasip2): the single source of
       # truth for guest buildability and the artifacts the integration tests load.
       # Per-module size report folded in; a compile break still names the offending
       # crate and -D warnings still applies.
@@ -77,7 +77,7 @@ jobs:
           cargo build --release --target wasm32-wasip2 --locked \
             -p example -p price-alert -p balance-tracker -p http-probe \
             -p clock-reader -p flaky-bomb -p fuel-bomb -p memory-bomb \
-            -p panic-bomb -p slow-host
+            -p panic-bomb -p slow-host -p topic-parity
           {
             echo "### module .wasm sizes"
             echo "| module | bytes |"

Cargo.toml

@@ -18,6 +18,7 @@ members = [
     "modules/fixtures/memory-bomb",
     "modules/fixtures/panic-bomb",
     "modules/fixtures/slow-host",
+    "modules/fixtures/topic-parity",
     "tools/load-gen",
 ]
 resolver = "2"

crates/nexum-module-macros/Cargo.toml

@@ -13,7 +13,13 @@ proc-macro = true
 workspace = true
 
 [dependencies]
+# Typed `B256` topics from the manifest extraction, embedded into the
+# emitted parity check.
+alloy-primitives.workspace = true
 nexum-world = { path = "../nexum-world", features = ["macros"] }
 proc-macro2.workspace = true
 quote.workspace = true
 syn = { workspace = true, features = ["full"] }
+
+[dev-dependencies]
+tempfile.workspace = true