diff --git a/AGENTS.md b/AGENTS.md
index 1cceb0f..f7fcf6c 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -96,8 +96,8 @@ with copies; symlinks require `core.symlinks` on Windows.
 
 ## Toolchain
 
-wasmtime 47 (`-W component-model-async -S p3`), wac-cli 0.10, wit-bindgen
-0.60, Node 24 (plain — the selftest legs; no engine flags anywhere:
+wasmtime 48 (`-W component-model-async -S p3`), wac-cli 0.10, wit-bindgen
+0.61, Node 24 (plain — the selftest legs; no engine flags anywhere:
 polyengine's callback ABI needs no JSPI), deno 2.9 (polyengine runner
 leg + browser-asset build; polyengine itself is consumed from JSR as exact
 release pins — see `js/runner-polyengine/README.md`), Rust
diff --git a/Cargo.lock b/Cargo.lock
index 6b097d0..36b6e69 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -174,9 +174,9 @@ checksum = "fc652a48c352aef3ea3aed32080501cf3ef6ed5da78602a020c991775b0aff04"
 
 [[package]]
 name = "cap-fs-ext"
-version = "4.0.2"
+version = "4.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d78e5a3368ae89b7cb68186411452b4b9fac8b41be9c19bf3f47c2d2c8e36e6b"
+checksum = "56ff379b70af8e08307a8f65e7040c7301cb4a572538ade16b4984f0da77847f"
 dependencies = [
  "cap-primitives",
  "cap-std",
@@ -186,9 +186,9 @@ dependencies = [
 
 [[package]]
 name = "cap-primitives"
-version = "4.0.2"
+version = "4.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cdadbd7c002d3a484b35243669abdae85a0ebaded5a61117169dc3400f9a7ff0"
+checksum = "8b5f74729fd2f44701d1a8eb47e906cdb3ccd9ec0f02baad85a744b791940b18"
 dependencies = [
  "ambient-authority",
  "fs-set-times",
@@ -204,9 +204,9 @@ dependencies = [
 
 [[package]]
 name = "cap-std"
-version = "4.0.2"
+version = "4.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7281235d6e96d3544ca18bba9049be92f4190f8d923e3caef1b5f66cfa752608"
+checksum = "c1ec78e242cfa2cfe276807ac2ecc00315a6c97786977414bcd1c3963b6c91b8"
 dependencies = [
  "cap-primitives",
  "io-extras",
@@ -415,27 +415,27 @@ dependencies = [
 
 [[package]]
 name = "cranelift-assembler-x64"
-version = "0.134.3"
+version = "0.135.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d552bd33b7a56dc70aeb1e1c960e51a218fa0db50f23873b500a310379450b2d"
+checksum = "9903e767cc0a95a59950de099a6b1d61e1476f774be1cdfa06d7ccdc9bfae56f"
 dependencies = [
  "cranelift-assembler-x64-meta",
 ]
 
 [[package]]
 name = "cranelift-assembler-x64-meta"
-version = "0.134.3"
+version = "0.135.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "078e80e4c222279e3330f6aa1a256ca77ddf156d4453166a9f09defedc4594dd"
+checksum = "e777252ea3ec9daffa71408fbfe0793ab0a7b7bc3b2cf0f417dd0fa33964b8ef"
 dependencies = [
  "cranelift-srcgen",
 ]
 
 [[package]]
 name = "cranelift-bforest"
-version = "0.134.3"
+version = "0.135.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "820ce15d4ad3562d613c31a67b6d0434d403e7091a68d1349903842f7d31737e"
+checksum = "7828208a36e6627481cea61bd24c6234e31411d5c58b48e80ca094a1d593b944"
 dependencies = [
  "cranelift-entity",
  "wasmtime-internal-core",
@@ -443,9 +443,9 @@ dependencies = [
 
 [[package]]
 name = "cranelift-bitset"
-version = "0.134.3"
+version = "0.135.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "61bca563d4b86d285928d9e27f97f27039bb33a0fc524fa130d7d0c106bf8ab3"
+checksum = "a58c8447cc59ef98c49096679f81392ad0acec2224cea2bef52011f5169f9d02"
 dependencies = [
  "serde",
  "serde_derive",
@@ -454,9 +454,9 @@ dependencies = [
 
 [[package]]
 name = "cranelift-codegen"
-version = "0.134.3"
+version = "0.135.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "709f4b7c0fb57d952658d5b5c07fbdc4149acd7b7f0de9678ae754b9c981949a"
+checksum = "ce520e899df1de583e7b564eafd66760fbc147d72894d2278ddac57a1489fcc0"
 dependencies = [
  "bumpalo",
  "cranelift-assembler-x64",
@@ -485,9 +485,9 @@ dependencies = [
 
 [[package]]
 name = "cranelift-codegen-meta"
-version = "0.134.3"
+version = "0.135.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "903dc8915af62aad1d9d0f39a5968d33fa80b9aa899ed6f56e47f40ca4512e1e"
+checksum = "8d8ab23e63d78ea6bbda18ae1ed9c958bc1cb88d90fb5e95f5ba62e9c019474b"
 dependencies = [
  "cranelift-assembler-x64-meta",
  "cranelift-codegen-shared",
@@ -498,24 +498,24 @@ dependencies = [
 
 [[package]]
 name = "cranelift-codegen-shared"
-version = "0.134.3"
+version = "0.135.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0522d74c227e49f3fd49ab055311486ae4f09083262b66705bed676952491469"
+checksum = "24319a996b1ef40ebf8af69b39c868c790b35a42cfe38edacfd8c9deb75ea712"
 
 [[package]]
 name = "cranelift-control"
-version = "0.134.3"
+version = "0.135.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "66560ea1c5cef72e170b18e46d263dba2d3169c9d39e8cafdab2173c6362cc1a"
+checksum = "cf9856d68cc2cefb83229cb2c55b620dd38427555c2fe87d73f8a4421616f628"
 dependencies = [
  "arbitrary",
 ]
 
 [[package]]
 name = "cranelift-entity"
-version = "0.134.3"
+version = "0.135.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b62ef5b17cc814d27e96b66a5b46da0e4ce2b8ac55a6d478048bb99d04b05526"
+checksum = "e0ec225d6b79c5d61358cb5ea081a1384ec541dbf8c1a8c618d187875af326ad"
 dependencies = [
  "cranelift-bitset",
  "serde",
@@ -525,9 +525,9 @@ dependencies = [
 
 [[package]]
 name = "cranelift-frontend"
-version = "0.134.3"
+version = "0.135.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a87e0aaa39dbf70693b348a221e45904111704ee8f9fef140498471005f9842d"
+checksum = "7d3a96a09bd9bd3cf6df2de2ea15d7418f493e946a8eaa1acfe39297a67ed3f3"
 dependencies = [
  "cranelift-codegen",
  "hashbrown 0.17.1",
@@ -538,15 +538,15 @@ dependencies = [
 
 [[package]]
 name = "cranelift-isle"
-version = "0.134.3"
+version = "0.135.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf79003ebfa1eed5e87f3b84446ad5236f540268289960e14f387dc9b28e40b7"
+checksum = "bd28f593c36afbdc9aa17305c0bb66c39ce0530e1caffcf389fbec053950083e"
 
 [[package]]
 name = "cranelift-native"
-version = "0.134.3"
+version = "0.135.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "05bf4f235743c81e67ee4db617c5a4a0b65d58d3f0cfc575ee0f1a4e0cd58273"
+checksum = "2987ca47affc261aa31ac643fb80dd7f8274cebf878003ba9f50cd6ff2c1055f"
 dependencies = [
  "cranelift-codegen",
  "libc",
@@ -555,9 +555,9 @@ dependencies = [
 
 [[package]]
 name = "cranelift-srcgen"
-version = "0.134.3"
+version = "0.135.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f6977c2a71ab1e0d1e62f966b411a498aa04c4dce47d93d52f8a360a06058922"
+checksum = "b7431dd8c9def94aca43b27915dee0d42103d9b13922cfb044febcd975547d68"
 
 [[package]]
 name = "crc32fast"
@@ -1431,9 +1431,9 @@ dependencies = [
 
 [[package]]
 name = "pulley-interpreter"
-version = "47.0.3"
+version = "48.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc5c8c21ea032e4efbdf2d067dc45171779dbe0c8ecf20ef4a57efa7474f2b0a"
+checksum = "f755d75e0809a4738a3e4880eeeb852fadbe1de5a437505b84f09c381657012a"
 dependencies = [
  "cranelift-bitset",
  "log",
@@ -1443,9 +1443,9 @@ dependencies = [
 
 [[package]]
 name = "pulley-macros"
-version = "47.0.3"
+version = "48.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9f10925455d5dde962e3604eade797ba5488644c8ee14a44191e2f2b58980574"
+checksum = "c7e69fa1c4a555946f82e7894a7df88b0e9ee03b4266829b4811467c616ce51d"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2125,9 +2125,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-compose"
-version = "0.252.0"
+version = "0.254.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d59b710751a35d54732a63851cdfacbfb2266b7160ce174faf269d3f4e84e31b"
+checksum = "8fd717357bff09b5f1ea49aea8ed1cd149b0c521823a1cc70bc2ac16b90b651a"
 dependencies = [
  "anyhow",
  "heck",
@@ -2135,8 +2135,8 @@ dependencies = [
  "log",
  "petgraph",
  "smallvec",
- "wasm-encoder 0.252.0",
- "wasmparser 0.252.0",
+ "wasm-encoder 0.254.0",
+ "wasmparser 0.254.0",
  "wat",
 ]
 
@@ -2152,32 +2152,32 @@ dependencies = [
 
 [[package]]
 name = "wasm-encoder"
-version = "0.252.0"
+version = "0.254.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8185ae345fa5687c054626ff9a50e7089797a343d9904d1dc9820eb4c4d3196f"
+checksum = "09480d646178e5fdd12bb06e812d0af9a3a191dbc9cd697fdc86687beade7393"
 dependencies = [
  "leb128fmt",
- "wasmparser 0.252.0",
+ "wasmparser 0.254.0",
 ]
 
 [[package]]
 name = "wasm-encoder"
-version = "0.254.0"
+version = "0.255.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09480d646178e5fdd12bb06e812d0af9a3a191dbc9cd697fdc86687beade7393"
+checksum = "9b524283fb5df62eec102ed0574838961bdd7ba5ac9c50d38e2756c51c971a42"
 dependencies = [
  "leb128fmt",
- "wasmparser 0.254.0",
+ "wasmparser 0.255.0",
 ]
 
 [[package]]
 name = "wasm-encoder"
-version = "0.255.0"
+version = "0.258.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9b524283fb5df62eec102ed0574838961bdd7ba5ac9c50d38e2756c51c971a42"
+checksum = "e974fe6821a8cf64575d51ea2194e2c8f77e7b66e9afe7419ce8a97f9ee0d251"
 dependencies = [
  "leb128fmt",
- "wasmparser 0.255.0",
+ "wasmparser 0.258.0",
 ]
 
 [[package]]
@@ -2211,16 +2211,28 @@ dependencies = [
  "wasmparser 0.254.0",
 ]
 
+[[package]]
+name = "wasm-metadata"
+version = "0.258.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "18a11585adb92fe9b55ad1d760e8d8fb5d87e0d2e303cb8eed57f078d54293a2"
+dependencies = [
+ "anyhow",
+ "indexmap",
+ "wasm-encoder 0.258.0",
+ "wasmparser 0.258.0",
+]
+
 [[package]]
 name = "wasm-wave"
-version = "0.252.0"
+version = "0.254.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "054d19e2b53e3bf158deac6e8cc003d9eaf3ec7ecaef579988ef7b5c666f9546"
+checksum = "e112fc0db85e7edf9258a9a0fa07566540c19a6a2af3fbf45a4d45d886bfd7df"
 dependencies = [
  "anyhow",
  "logos",
  "thiserror 2.0.19",
- "wit-parser 0.252.0",
+ "wit-parser 0.254.0",
 ]
 
 [[package]]
@@ -2251,9 +2263,9 @@ dependencies = [
 
 [[package]]
 name = "wasmparser"
-version = "0.252.0"
+version = "0.254.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d3eb099dcadcde5be9eef55e3a337128efd4e44b4c93122487e4d2e4e1c6627c"
+checksum = "d5769a29f799fbab136aaf65b4fe5384cd7d93fe6fc9ba0dcb6c8382a1f16e27"
 dependencies = [
  "bitflags",
  "hashbrown 0.17.1",
@@ -2264,43 +2276,43 @@ dependencies = [
 
 [[package]]
 name = "wasmparser"
-version = "0.254.0"
+version = "0.255.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d5769a29f799fbab136aaf65b4fe5384cd7d93fe6fc9ba0dcb6c8382a1f16e27"
+checksum = "e8e329ef4b5d46e73b91d3ac6924417cad55a8cbbf869c199283383427c3320b"
 dependencies = [
  "bitflags",
- "hashbrown 0.17.1",
  "indexmap",
  "semver",
 ]
 
 [[package]]
 name = "wasmparser"
-version = "0.255.0"
+version = "0.258.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e8e329ef4b5d46e73b91d3ac6924417cad55a8cbbf869c199283383427c3320b"
+checksum = "d9a61719f93a87b16d325921e251800c4833f8fab50fa21c7de73aed50086313"
 dependencies = [
  "bitflags",
+ "hashbrown 0.17.1",
  "indexmap",
  "semver",
 ]
 
 [[package]]
 name = "wasmprinter"
-version = "0.252.0"
+version = "0.254.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7142797de29b35ab8dbf15c00f55fda75d409da4c423a8ab8bd6b667a785824b"
+checksum = "64e3ba11e024f504698f87b629b2b66c22a1231758de7607754963f7d198be39"
 dependencies = [
  "anyhow",
  "termcolor",
- "wasmparser 0.252.0",
+ "wasmparser 0.254.0",
 ]
 
 [[package]]
 name = "wasmtime"
-version = "47.0.3"
+version = "48.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c80ca6098e0d4d06886d91d7f2cc3cb6623eb583c4c0ab3c89cbfb6098c8586c"
+checksum = "1bd39f78fe9bc82cee4025ec9d52118269e9a1498016cc60119b14f2e1d86a8d"
 dependencies = [
  "addr2line",
  "async-trait",
@@ -2308,7 +2320,6 @@ dependencies = [
  "bumpalo",
  "bytes",
  "cc",
- "cfg-if",
  "encoding_rs",
  "futures",
  "fxprof-processed-profile",
@@ -2332,9 +2343,9 @@ dependencies = [
  "target-lexicon",
  "tempfile",
  "wasm-compose",
- "wasm-encoder 0.252.0",
+ "wasm-encoder 0.254.0",
  "wasm-wave",
- "wasmparser 0.252.0",
+ "wasmparser 0.254.0",
  "wasmtime-environ",
  "wasmtime-internal-cache",
  "wasmtime-internal-component-macro",
@@ -2348,14 +2359,14 @@ dependencies = [
  "wasmtime-internal-versioned-export-macros",
  "wat",
  "windows-sys 0.61.2",
- "wit-parser 0.252.0",
+ "wit-parser 0.254.0",
 ]
 
 [[package]]
 name = "wasmtime-environ"
-version = "47.0.3"
+version = "48.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "134f9d136d29c76f6c1b4c9b468e97a2efc38c7d49fd188e39b64870b2fea701"
+checksum = "00c1070d95484d048994ec109cd42c4932ac07e6ee3cc1886fb90c7a18ec29da"
 dependencies = [
  "anyhow",
  "cpp_demangle",
@@ -2375,8 +2386,8 @@ dependencies = [
  "sha2",
  "smallvec",
  "target-lexicon",
- "wasm-encoder 0.252.0",
- "wasmparser 0.252.0",
+ "wasm-encoder 0.254.0",
+ "wasmparser 0.254.0",
  "wasmprinter",
  "wasmtime-internal-component-util",
  "wasmtime-internal-core",
@@ -2384,9 +2395,9 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-internal-cache"
-version = "47.0.3"
+version = "48.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "65db2eb1bfc5371a3b4107dbf539d0b93d05016fc29625b1648146b47db02071"
+checksum = "9d447fd40f3e149cda8c0cd808660a1d1de438f3ff28627abb9bcda90dfb4895"
 dependencies = [
  "base64",
  "directories-next",
@@ -2404,9 +2415,9 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-internal-component-macro"
-version = "47.0.3"
+version = "48.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2bf7b91fed3fc34781d57f9c6654ea2513bf0a99f7b0b0523c00de1e6efebe1c"
+checksum = "f3d2b2f9f89a65bb2277d82fbdd49263d27d8233bc717d750c4b13a23d57721c"
 dependencies = [
  "anyhow",
  "proc-macro2",
@@ -2414,20 +2425,20 @@ dependencies = [
  "syn 2.0.119",
  "wasmtime-internal-component-util",
  "wasmtime-internal-wit-bindgen",
- "wit-parser 0.252.0",
+ "wit-parser 0.254.0",
 ]
 
 [[package]]
 name = "wasmtime-internal-component-util"
-version = "47.0.3"
+version = "48.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc8a678149885cae00289f806fbe74c7863084cf74cace0b8dc73602279400e1"
+checksum = "2c0fe8292115fda08875f29064ae9f7f0b2c1ffbb323146eae538ae34b8a613f"
 
 [[package]]
 name = "wasmtime-internal-core"
-version = "47.0.3"
+version = "48.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a0092c4b9d070ac5e278b6d0db10f5e71214190f0347ca57502b4692f796321"
+checksum = "821385794cf44baf2967fd2515368429ed2bff9b9b256f62d09a0f1301474fd8"
 dependencies = [
  "anyhow",
  "hashbrown 0.17.1",
@@ -2437,11 +2448,10 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-internal-cranelift"
-version = "47.0.3"
+version = "48.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6851ebc9e03cab23d9821d2b2505d380bdfe38f35ccec945247b05274d85c98b"
+checksum = "0238b4a52773457ad1b8a1a26be90486e0ca0108cf46b9be16cc1d8d8cabdfa1"
 dependencies = [
- "cfg-if",
  "cranelift-codegen",
  "cranelift-control",
  "cranelift-entity",
@@ -2455,7 +2465,7 @@ dependencies = [
  "smallvec",
  "target-lexicon",
  "thiserror 2.0.19",
- "wasmparser 0.252.0",
+ "wasmparser 0.254.0",
  "wasmtime-environ",
  "wasmtime-internal-core",
  "wasmtime-internal-unwinder",
@@ -2464,12 +2474,11 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-internal-fiber"
-version = "47.0.3"
+version = "48.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9b26da6d5f60d4c438da70bba3553fe810a840533a64156be287dca2081c6991"
+checksum = "596f1d85e06cbf9c9add9c78ea135171c5753264ffe94a83dcc082a1ff49fc9b"
 dependencies = [
  "cc",
- "cfg-if",
  "libc",
  "rustix",
  "wasmtime-environ",
@@ -2479,9 +2488,9 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-internal-jit-debug"
-version = "47.0.3"
+version = "48.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ed621ba25d7bf78b7edd7b4749abbb27c2e5cdba836c9504a424ee74b6c23149"
+checksum = "365faed74827bb0116785bab5872372df1baaec9ec0003c83bc99ccdc595f689"
 dependencies = [
  "cc",
  "object",
@@ -2491,11 +2500,10 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-internal-jit-icache-coherence"
-version = "47.0.3"
+version = "48.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5684ba160951baad06a725696f3c590e2fb0e8067c2aebee27bf7f9259058e85"
+checksum = "3cce25afd9e7ac4957292a5c6a219951dd0f140b8417e7378a97f50b67c3b96f"
 dependencies = [
- "cfg-if",
  "libc",
  "wasmtime-internal-core",
  "windows-sys 0.61.2",
@@ -2503,11 +2511,10 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-internal-unwinder"
-version = "47.0.3"
+version = "48.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "112eead527bffa8ff0646a11fb4339a9d52ddd1da2b9a6fce4aff84c815dd94f"
+checksum = "a1fdea09d51e39c774984ca68a7d7486767e5b2935f5e686fa654aabcfc3c42d"
 dependencies = [
- "cfg-if",
  "cranelift-codegen",
  "log",
  "object",
@@ -2516,9 +2523,9 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-internal-versioned-export-macros"
-version = "47.0.3"
+version = "48.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "153592e0bed824fc13c6696203fa1bd7bd20eb355316475e39a55f081ef80eca"
+checksum = "97e48a5f514c38c2f74249724cb3501e45548d3311ca9e3881694859fd6ba116"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2527,31 +2534,30 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-internal-wit-bindgen"
-version = "47.0.3"
+version = "48.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c456ad6e81e0f46abfeca43687d18ea15e289c395b262ea6e0023e2682e088be"
+checksum = "07429ab53576255be2d298e04b2e1f381e39645465adbaebd69314b5430165c0"
 dependencies = [
  "anyhow",
  "bitflags",
  "heck",
  "indexmap",
- "wit-parser 0.252.0",
+ "wit-component 0.254.0",
+ "wit-parser 0.254.0",
 ]
 
 [[package]]
 name = "wasmtime-wasi"
-version = "47.0.3"
+version = "48.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4c1cf60cd6a565213af7074b4aad7bb5e110e3c6c6aae54425aa0500a0e15e86"
+checksum = "85dd81ee95792682ea5b279c9ed352f6b8a2cba084c2f8abdb225e6933323fed"
 dependencies = [
  "async-trait",
  "bitflags",
  "bytes",
  "cap-fs-ext",
- "cap-std",
- "cfg-if",
+ "cap-primitives",
  "futures",
- "io-lifetimes 3.0.1",
  "rand",
  "rustix",
  "thiserror 2.0.19",
@@ -2566,9 +2572,9 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-wasi-io"
-version = "47.0.3"
+version = "48.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7fb08e1d7755aaa467ce14080b7b01e33c914a920f6000696f1e42e40ea6387e"
+checksum = "6a557bc8a7232cd079f6b423a9bb385f3ff9148824f3c26c07a028b499fab2bf"
 dependencies = [
  "async-trait",
  "bytes",
@@ -2579,14 +2585,14 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-wizer"
-version = "47.0.3"
+version = "48.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8fc5f1c0bf98aa22e4551cb81ff035d8103ec473ce663d441e7c485b45818a7f"
+checksum = "5b8120e6523a27278e0848815641f70db827cd403f25cb0a4bca75560e909397"
 dependencies = [
  "log",
  "rayon",
- "wasm-encoder 0.252.0",
- "wasmparser 0.252.0",
+ "wasm-encoder 0.254.0",
+ "wasmparser 0.254.0",
  "wasmtime",
 ]
 
@@ -2623,9 +2629,9 @@ dependencies = [
 
 [[package]]
 name = "wiggle"
-version = "47.0.3"
+version = "48.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89091642df051b84a7e00bdff75e985e507f2298384e477cc9310b0ddd79f004"
+checksum = "b871ea219ad85c1e59ee7d013563814e86d2e6aa094d3bc66b7675ec4ca58bb7"
 dependencies = [
  "bitflags",
  "thiserror 2.0.19",
@@ -2637,9 +2643,9 @@ dependencies = [
 
 [[package]]
 name = "wiggle-generate"
-version = "47.0.3"
+version = "48.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12247f46f31bb5e7593947f9bba07317d0c1978e0d02250b979dd08f56f46e9f"
+checksum = "ed981675756e748a4725286a4059c9be006749a8db4120d54e2021d0f167bac3"
 dependencies = [
  "heck",
  "proc-macro2",
@@ -2651,9 +2657,9 @@ dependencies = [
 
 [[package]]
 name = "wiggle-macro"
-version = "47.0.3"
+version = "48.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e556a0880c9506fdcc662b1e226c7ced692f4977fed5b1ed40a3f3f0a48356f2"
+checksum = "7f3927729af874585c58b85710128e40d459a7064bb9aea9b0b420fb5eafd555"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2878,9 +2884,9 @@ dependencies = [
 
 [[package]]
 name = "wit-bindgen"
-version = "0.60.0"
+version = "0.61.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a301904d6657d6364c758d869e5389d05d393b16d5b65db60b4f03cbe71bb80d"
+checksum = "e473fd0095479f9689ac7d2a52c427cc96bb2b973ace50238dfcc1ab1cd52d93"
 dependencies = [
  "bitflags",
  "futures",
@@ -2889,36 +2895,36 @@ dependencies = [
 
 [[package]]
 name = "wit-bindgen-core"
-version = "0.60.0"
+version = "0.61.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "48521bb96e56cbb9e031ad306c80dc20e89e69e49ada02781ee06f60fbcb545f"
+checksum = "87445680dfe6d6b5369e884bd63c03a3335268e855365b2fc3f7bcdce96a630e"
 dependencies = [
  "anyhow",
  "heck",
- "wit-parser 0.254.0",
+ "wit-parser 0.258.0",
 ]
 
 [[package]]
 name = "wit-bindgen-rust"
-version = "0.60.0"
+version = "0.61.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3df3fe9b9a0066f82fd0c2f07f79d0ffc0f85c53fa5f998516d8722712479042"
+checksum = "72f2fe494de0d898216caf0fd0ae76af75753fcb3ff4f465b46131537cf24cf8"
 dependencies = [
  "anyhow",
  "heck",
  "indexmap",
  "prettyplease",
  "syn 2.0.119",
- "wasm-metadata 0.254.0",
+ "wasm-metadata 0.258.0",
  "wit-bindgen-core",
- "wit-component",
+ "wit-component 0.258.0",
 ]
 
 [[package]]
 name = "wit-bindgen-rust-macro"
-version = "0.60.0"
+version = "0.61.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d689c4bc9d6af067c651cfba444766343c9a4bdef15fad1e2efab95c0c277af0"
+checksum = "59283a01aec94f60f92ada22ffe182a5cea8acfce43be3be688de8d52df55312"
 dependencies = [
  "anyhow",
  "macro-string",
@@ -2949,11 +2955,30 @@ dependencies = [
  "wit-parser 0.254.0",
 ]
 
+[[package]]
+name = "wit-component"
+version = "0.258.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "481b5c47b2ecce0389b5e08a05557d6a190c9cd761773b8880a8017ee04dc7ef"
+dependencies = [
+ "anyhow",
+ "bitflags",
+ "indexmap",
+ "log",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "wasm-encoder 0.258.0",
+ "wasm-metadata 0.258.0",
+ "wasmparser 0.258.0",
+ "wit-parser 0.258.0",
+]
+
 [[package]]
 name = "wit-parser"
-version = "0.252.0"
+version = "0.254.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4266bea110371c620ccf3201c5023676046bc4556e5c7cfb5d500bda5ebc162d"
+checksum = "1655131e4f7d3f0cb141f6eca71315ca40eff0f3d4de7cff0a82bacedd8c89b4"
 dependencies = [
  "anyhow",
  "hashbrown 0.17.1",
@@ -2965,14 +2990,14 @@ dependencies = [
  "serde_derive",
  "serde_json",
  "unicode-ident",
- "wasmparser 0.252.0",
+ "wasmparser 0.254.0",
 ]
 
 [[package]]
 name = "wit-parser"
-version = "0.254.0"
+version = "0.258.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1655131e4f7d3f0cb141f6eca71315ca40eff0f3d4de7cff0a82bacedd8c89b4"
+checksum = "ff4daaa3cd97ae49ecd0a99dc009d453f93e0f083dd3be38c0f24a83a93e37ac"
 dependencies = [
  "anyhow",
  "hashbrown 0.17.1",
@@ -2984,7 +3009,7 @@ dependencies = [
  "serde_derive",
  "serde_json",
  "unicode-ident",
- "wasmparser 0.254.0",
+ "wasmparser 0.258.0",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 2942f4a..de98d3c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -45,7 +45,7 @@ component-test-results = { path = "crates/component-test-results" }
 component-test-sdk = { path = "crates/component-test-sdk" }
 component-test-sdk-macro = { path = "crates/component-test-sdk-macro" }
 component-test-runner = { path = "crates/component-test-runner" }
-wit-bindgen = "0.60"
+wit-bindgen = "0.61"
 futures = "0.3"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
@@ -58,8 +58,8 @@ clap = { version = "4", features = ["derive"] }
 # One wasmtime everywhere: the host-embed runner and the CLI's `run`
 # embedding must agree (and stay in step with the wasmtime CLI the
 # verify recipes drive).
-wasmtime = { version = "47", features = ["component-model-async"] }
-wasmtime-wasi = { version = "47", features = ["p3"] }
+wasmtime = { version = "48", features = ["component-model-async"] }
+wasmtime-wasi = { version = "48", features = ["p3"] }
 # Composition as a library (the CLI's compose-runner/run): same
 # release line as the wac CLI the compose examples document.
 wac-graph = "0.10"
diff --git a/crates/component-test-runner/Cargo.toml b/crates/component-test-runner/Cargo.toml
index 9c0069e..89598ad 100644
--- a/crates/component-test-runner/Cargo.toml
+++ b/crates/component-test-runner/Cargo.toml
@@ -20,7 +20,7 @@ wasmtime-wasi = { workspace = true }
 # For the feature-gated `wizen` module (component-level
 # pre-initialization, #25 / findings.md #22; `component-test wizen`
 # is the plain-suite driver).
-wasmtime-wizer = { version = "47", features = ["wasmtime", "component-model"], optional = true }
+wasmtime-wizer = { version = "48", features = ["wasmtime", "component-model"], optional = true }
 
 [features]
 wizer = ["dep:wasmtime-wizer"]
diff --git a/docs/findings.md b/docs/findings.md
index 629748e..a5a8161 100644
--- a/docs/findings.md
+++ b/docs/findings.md
@@ -2,8 +2,8 @@
 
 Empirical findings from building and validating the stack, consolidated
 from the original prototype and spike READMEs. Toolchain baseline:
-wasmtime 47.0.1 (`-W component-model-async -S p3`), wac-cli 0.10.1,
-wit-bindgen 0.60, jco 1.26.1, Node 24.18 (`--experimental-wasm-jspi`),
+wasmtime 48.0.1 (`-W component-model-async -S p3`), wac-cli 0.10.1,
+wit-bindgen 0.61, jco 1.26.1, Node 24.18 (`--experimental-wasm-jspi`),
 Rust `wasm32-wasip2` target.
 
 ## Contract / design findings
diff --git a/scripts/setup.sh b/scripts/setup.sh
index 57aebaf..0f18377 100755
--- a/scripts/setup.sh
+++ b/scripts/setup.sh
@@ -4,7 +4,7 @@
 # Rust itself is pinned by rust-toolchain.toml; Node by the workflow.
 set -euo pipefail
 
-WASMTIME_VERSION="47.0.1"
+WASMTIME_VERSION="48.0.1"
 WAC_VERSION="0.10.1"
 WASM_TOOLS_VERSION="1.247.0"
 JUST_VERSION="1.54.0"