Upgrade zwasm dependency to v0.3.0

- build.zig.zon: zwasm v0.2.0 -> v0.3.0 (100% spec, fuzz tested)
- README: update zwasm benchmark stats (13/21 beat wasmtime, 50x smaller)
- bench/README.md: update zwasm version reference
- bench/history.yaml: record zwasm v0.3.0 verification benchmarks

Author: chaploud

README.md

@@ -180,7 +180,7 @@ Call WebAssembly modules directly from Clojure:
 > **Performance note**: The Wasm runtime ([zwasm](https://github.com/clojurewasm/zwasm))
 > uses Register IR with ARM64/x86_64 JIT. Full Wasm 3.0 support (all 9 proposals
 > including GC, function references, SIMD, exception handling).
-> zwasm wins 10/21 benchmarks vs wasmtime, with ~5x smaller binary.
+> zwasm wins 13/21 benchmarks vs wasmtime, with ~50x smaller binary.
 
 ### Server & Networking
 

bench/README.md

@@ -243,7 +243,7 @@ Full Wasm 3.0 support (all 9 proposals including GC) in 1.1 MB.
 
 ## Latest Wasm Runtime Results (2026-02-14)
 
-CW's built-in Wasm runtime (zwasm v0.2.0, Register IR + ARM64/x86_64 JIT)
+CW's built-in Wasm runtime (zwasm v0.3.0, Register IR + ARM64/x86_64 JIT)
 vs 4 other Wasm runtimes. Apple M4 Pro, 48GB RAM.
 21 benchmarks (WAT 5, TinyGo 11, Shootout 5), hyperfine 3 runs + 1 warmup.
 

bench/history.yaml

@@ -931,3 +931,30 @@ entries:
       string_ops: {time_ms: 25, mem_mb: 21.3}
       multimethod_dispatch: {time_ms: 6, mem_mb: 11.6}
       real_workload: {time_ms: 10, mem_mb: 18.6}
+  - id: "zwasm-v0.3.0"
+    date: "2026-02-16"
+    reason: "zwasm v0.3.0 verification"
+    commit: "ca6d85f"
+    build: ReleaseSafe
+    backend: vm
+    results:
+      fib_recursive: {time_ms: 17, mem_mb: 11.9}
+      fib_loop: {time_ms: 3, mem_mb: 12.0}
+      tak: {time_ms: 9, mem_mb: 11.9}
+      arith_loop: {time_ms: 5, mem_mb: 11.9}
+      map_filter_reduce: {time_ms: 6, mem_mb: 13.0}
+      vector_ops: {time_ms: 7, mem_mb: 17.3}
+      map_ops: {time_ms: 6, mem_mb: 16.0}
+      list_build: {time_ms: 5, mem_mb: 13.0}
+      sieve: {time_ms: 7, mem_mb: 15.5}
+      nqueens: {time_ms: 17, mem_mb: 23.0}
+      atom_swap: {time_ms: 6, mem_mb: 12.0}
+      gc_stress: {time_ms: 29, mem_mb: 17.3}
+      lazy_chain: {time_ms: 6, mem_mb: 12.0}
+      transduce: {time_ms: 7, mem_mb: 12.0}
+      keyword_lookup: {time_ms: 13, mem_mb: 12.0}
+      protocol_dispatch: {time_ms: 5, mem_mb: 12.0}
+      nested_update: {time_ms: 12, mem_mb: 16.8}
+      string_ops: {time_ms: 26, mem_mb: 23.3}
+      multimethod_dispatch: {time_ms: 6, mem_mb: 12.0}
+      real_workload: {time_ms: 10, mem_mb: 19.2}

build.zig.zon

@@ -3,8 +3,8 @@
     .version = "0.2.0",
     .dependencies = .{
         .zwasm = .{
-            .url = "https://github.com/clojurewasm/zwasm/archive/v0.2.0.tar.gz",
-            .hash = "zwasm-0.2.0-IBbzF4qdGQDY2MqbDOXjG3hsd8aEGaEpsSQndxRMtCmV",
+            .url = "https://github.com/clojurewasm/zwasm/archive/v0.3.0.tar.gz",
+            .hash = "zwasm-0.3.0-IBbzF_CyGwCnVvJ97chH7HcQdmygUKTtQy57D7yzfhlr",
         },
     },
     .fingerprint = 0x62a7be489d633543,