diff --git a/Cargo.lock b/Cargo.lock
index 0c7f59d..0ac4174 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -11,6 +11,15 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "arc-swap"
+version = "1.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a3a1fd6f75306b68087b831f025c712524bcb19aad54e557b1129cfa0a2b207"
+dependencies = [
+ "rustversion",
+]
+
 [[package]]
 name = "async-trait"
 version = "0.1.89"
@@ -84,12 +93,24 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "base64"
+version = "0.22.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
+
 [[package]]
 name = "bitflags"
 version = "2.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c4512299f36f043ab09a583e57bceb5a5aab7a73db1805848e8fef3c9e8c78b3"
 
+[[package]]
+name = "bumpalo"
+version = "3.20.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5d20789868f4b01b2f2caec9f5c4e0213b41e3e5702a50157d699ae31ced2fcb"
+
 [[package]]
 name = "byteorder"
 version = "1.5.0"
@@ -118,13 +139,40 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
 
+[[package]]
+name = "cfg_aliases"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724"
+
 [[package]]
 name = "cobs"
 version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0fa961b519f0b462e3a3b4a34b64d119eeaca1d59af726fe450bbba07a9fc0a1"
 dependencies = [
- "thiserror",
+ "thiserror 2.0.18",
+]
+
+[[package]]
+name = "const_format"
+version = "0.2.36"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4481a617ad9a412be3b97c5d403fef8ed023103368908b9c50af598ff467cc1e"
+dependencies = [
+ "const_format_proc_macros",
+ "konst",
+]
+
+[[package]]
+name = "const_format_proc_macros"
+version = "0.2.34"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d57c2eccfb16dbac1f4e61e206105db5820c9d26c3c472bc17c774259ef7744"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-xid",
 ]
 
 [[package]]
@@ -161,6 +209,17 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "displaydoc"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "97369cbbc041bc366949bc74d34658d6cda5621039731c6310521892a3a20ae0"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "dtoa"
 version = "1.0.11"
@@ -297,6 +356,33 @@ dependencies = [
  "unicode-width",
 ]
 
+[[package]]
+name = "getrandom"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ff2abc00be7fca6ebc474524697ae276ad847ad0a6b3faa4bcb027e9a4614ad0"
+dependencies = [
+ "cfg-if",
+ "js-sys",
+ "libc",
+ "wasi",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "getrandom"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "899def5c37c4fd7b2664648c28120ecec138e4d395b459e5ca34f9cce2dd77fd"
+dependencies = [
+ "cfg-if",
+ "js-sys",
+ "libc",
+ "r-efi",
+ "wasip2",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.17.1"
@@ -309,7 +395,7 @@ version = "0.1.0"
 dependencies = [
  "cc",
  "hemplate-parser",
- "thiserror",
+ "thiserror 2.0.18",
  "tree-sitter",
 ]
 
@@ -396,6 +482,23 @@ dependencies = [
  "pin-project-lite",
  "smallvec",
  "tokio",
+ "want",
+]
+
+[[package]]
+name = "hyper-rustls"
+version = "0.27.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "33ca68d021ef39cf6463ab54c1d0f5daf03377b70561305bb89a8f83aab66e0f"
+dependencies = [
+ "http",
+ "hyper",
+ "hyper-util",
+ "rustls",
+ "tokio",
+ "tokio-rustls",
+ "tower-service",
+ "webpki-roots",
 ]
 
 [[package]]
@@ -404,13 +507,124 @@ version = "0.1.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "96547c2556ec9d12fb1578c4eaf448b04993e7fb79cbaad930a656880a6bdfa0"
 dependencies = [
+ "base64",
  "bytes",
+ "futures-channel",
+ "futures-util",
  "http",
  "http-body",
  "hyper",
+ "ipnet",
+ "libc",
+ "percent-encoding",
  "pin-project-lite",
+ "socket2",
  "tokio",
  "tower-service",
+ "tracing",
+]
+
+[[package]]
+name = "icu_collections"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2984d1cd16c883d7935b9e07e44071dca8d917fd52ecc02c04d5fa0b5a3f191c"
+dependencies = [
+ "displaydoc",
+ "potential_utf",
+ "utf8_iter",
+ "yoke",
+ "zerofrom",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_locale_core"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "92219b62b3e2b4d88ac5119f8904c10f8f61bf7e95b640d25ba3075e6cac2c29"
+dependencies = [
+ "displaydoc",
+ "litemap",
+ "tinystr",
+ "writeable",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_normalizer"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c56e5ee99d6e3d33bd91c5d85458b6005a22140021cc324cea84dd0e72cff3b4"
+dependencies = [
+ "icu_collections",
+ "icu_normalizer_data",
+ "icu_properties",
+ "icu_provider",
+ "smallvec",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_normalizer_data"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da3be0ae77ea334f4da67c12f149704f19f81d1adf7c51cf482943e84a2bad38"
+
+[[package]]
+name = "icu_properties"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bee3b67d0ea5c2cca5003417989af8996f8604e34fb9ddf96208a033901e70de"
+dependencies = [
+ "icu_collections",
+ "icu_locale_core",
+ "icu_properties_data",
+ "icu_provider",
+ "zerotrie",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_properties_data"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e2bbb201e0c04f7b4b3e14382af113e17ba4f63e2c9d2ee626b720cbce54a14"
+
+[[package]]
+name = "icu_provider"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "139c4cf31c8b5f33d7e199446eff9c1e02decfc2f0eec2c8d71f65befa45b421"
+dependencies = [
+ "displaydoc",
+ "icu_locale_core",
+ "writeable",
+ "yoke",
+ "zerofrom",
+ "zerotrie",
+ "zerovec",
+]
+
+[[package]]
+name = "idna"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3b0875f23caa03898994f6ddc501886a45c7d3d62d04d2d90788d47be1b1e4de"
+dependencies = [
+ "idna_adapter",
+ "smallvec",
+ "utf8_iter",
+]
+
+[[package]]
+name = "idna_adapter"
+version = "1.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb68373c0d6620ef8105e855e7745e18b0d00d3bdb07fb532e434244cdb9a714"
+dependencies = [
+ "icu_normalizer",
+ "icu_properties",
 ]
 
 [[package]]
@@ -423,18 +637,57 @@ dependencies = [
  "hashbrown",
 ]
 
+[[package]]
+name = "ipnet"
+version = "2.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d98f6fed1fde3f8c21bc40a1abb88dd75e67924f9cffc3ef95607bad8017f8e2"
+
 [[package]]
 name = "itoa"
 version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8f42a60cbdf9a97f5d2305f08a87dc4e09308d1276d28c869c684d7777685682"
 
+[[package]]
+name = "js-sys"
+version = "0.3.98"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "67df7112613f8bfd9150013a0314e196f4800d3201ae742489d999db2f979f08"
+dependencies = [
+ "cfg-if",
+ "futures-util",
+ "once_cell",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "konst"
+version = "0.2.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "128133ed7824fcd73d6e7b17957c5eb7bacb885649bd8c69708b2331a10bcefb"
+dependencies = [
+ "konst_macro_rules",
+]
+
+[[package]]
+name = "konst_macro_rules"
+version = "0.2.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4933f3f57a8e9d9da04db23fb153356ecaf00cbd14aee46279c33dc80925c37"
+
 [[package]]
 name = "libc"
 version = "0.2.186"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66"
 
+[[package]]
+name = "litemap"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "92daf443525c4cce67b150400bc2316076100ce0b3686209eb8cf3c31612e6f0"
+
 [[package]]
 name = "lock_api"
 version = "0.4.14"
@@ -450,6 +703,12 @@ version = "0.4.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5e5032e24019045c762d3c0f28f5b6b8bbf38563a65908389bf7978758920897"
 
+[[package]]
+name = "lru-slab"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "112b39cec0b298b6c1999fee3e31427f74f676e4cb9879ed1a121b43661a4154"
+
 [[package]]
 name = "mac"
 version = "0.1.1"
@@ -507,7 +766,7 @@ checksum = "50b7e5b27aa02a74bac8c3f23f448f8d87ff11f92d3aac1a6ed369ee08cc56c1"
 dependencies = [
  "libc",
  "wasi",
- "windows-sys",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -562,6 +821,12 @@ dependencies = [
  "windows-link",
 ]
 
+[[package]]
+name = "paste"
+version = "1.0.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "57c0d7b74b563b49d38dae00a0c37d4d6de9b432382b2892f0574ddcae73fd0a"
+
 [[package]]
 name = "percent-encoding"
 version = "2.3.2"
@@ -595,7 +860,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3c80231409c20246a13fddb31776fb942c38553c51e871f8cbd687a4cfb5843d"
 dependencies = [
  "phf_shared",
- "rand",
+ "rand 0.8.6",
 ]
 
 [[package]]
@@ -638,6 +903,24 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "potential_utf"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0103b1cef7ec0cf76490e969665504990193874ea05c85ff9bab8b911d0a0564"
+dependencies = [
+ "zerovec",
+]
+
+[[package]]
+name = "ppv-lite86"
+version = "0.2.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85eae3c4ed2f50dcfe72643da4befc30deadb458a9b590d720cde2f2b1e97da9"
+dependencies = [
+ "zerocopy",
+]
+
 [[package]]
 name = "precomputed-hash"
 version = "0.1.1"
@@ -653,6 +936,61 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "quinn"
+version = "0.11.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9e20a958963c291dc322d98411f541009df2ced7b5a4f2bd52337638cfccf20"
+dependencies = [
+ "bytes",
+ "cfg_aliases",
+ "pin-project-lite",
+ "quinn-proto",
+ "quinn-udp",
+ "rustc-hash",
+ "rustls",
+ "socket2",
+ "thiserror 2.0.18",
+ "tokio",
+ "tracing",
+ "web-time",
+]
+
+[[package]]
+name = "quinn-proto"
+version = "0.11.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "434b42fec591c96ef50e21e886936e66d3cc3f737104fdb9b737c40ffb94c098"
+dependencies = [
+ "bytes",
+ "getrandom 0.3.4",
+ "lru-slab",
+ "rand 0.9.4",
+ "ring",
+ "rustc-hash",
+ "rustls",
+ "rustls-pki-types",
+ "slab",
+ "thiserror 2.0.18",
+ "tinyvec",
+ "tracing",
+ "web-time",
+]
+
+[[package]]
+name = "quinn-udp"
+version = "0.5.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "addec6a0dcad8a8d96a771f815f0eaf55f9d1805756410b39f5fa81332574cbd"
+dependencies = [
+ "cfg_aliases",
+ "libc",
+ "once_cell",
+ "socket2",
+ "tracing",
+ "windows-sys 0.60.2",
+]
+
 [[package]]
 name = "quote"
 version = "1.0.45"
@@ -662,13 +1000,39 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "r-efi"
+version = "5.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"
+
 [[package]]
 name = "rand"
 version = "0.8.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5ca0ecfa931c29007047d1bc58e623ab12e5590e8c7cc53200d5202b69266d8a"
 dependencies = [
- "rand_core",
+ "rand_core 0.6.4",
+]
+
+[[package]]
+name = "rand"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "44c5af06bb1b7d3216d91932aed5265164bf384dc89cd6ba05cf59a35f5f76ea"
+dependencies = [
+ "rand_chacha",
+ "rand_core 0.9.5",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3022b5f1df60f26e1ffddd6c66e8aa15de382ae63b3a0c1bfc0e4d3e3f325cb"
+dependencies = [
+ "ppv-lite86",
+ "rand_core 0.9.5",
 ]
 
 [[package]]
@@ -677,6 +1041,15 @@ version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
 
+[[package]]
+name = "rand_core"
+version = "0.9.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "76afc826de14238e6e8c374ddcc1fa19e374fd8dd986b0d2af0d02377261d83c"
+dependencies = [
+ "getrandom 0.3.4",
+]
+
 [[package]]
 name = "redox_syscall"
 version = "0.5.18"
@@ -715,6 +1088,99 @@ version = "0.8.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dc897dd8d9e8bd1ed8cdad82b5966c3e0ecae09fb1907d58efaa013543185d0a"
 
+[[package]]
+name = "reqwest"
+version = "0.12.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eddd3ca559203180a307f12d114c268abf583f59b03cb906fd0b3ff8646c1147"
+dependencies = [
+ "base64",
+ "bytes",
+ "futures-core",
+ "http",
+ "http-body",
+ "http-body-util",
+ "hyper",
+ "hyper-rustls",
+ "hyper-util",
+ "js-sys",
+ "log",
+ "percent-encoding",
+ "pin-project-lite",
+ "quinn",
+ "rustls",
+ "rustls-pki-types",
+ "serde",
+ "serde_json",
+ "serde_urlencoded",
+ "sync_wrapper",
+ "tokio",
+ "tokio-rustls",
+ "tower",
+ "tower-http",
+ "tower-service",
+ "url",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+ "webpki-roots",
+]
+
+[[package]]
+name = "ring"
+version = "0.17.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4689e6c2294d81e88dc6261c768b63bc4fcdb852be6d1352498b114f61383b7"
+dependencies = [
+ "cc",
+ "cfg-if",
+ "getrandom 0.2.17",
+ "libc",
+ "untrusted",
+ "windows-sys 0.52.0",
+]
+
+[[package]]
+name = "rustc-hash"
+version = "2.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "94300abf3f1ae2e2b8ffb7b58043de3d399c73fa6f4b73826402a5c457614dbe"
+
+[[package]]
+name = "rustls"
+version = "0.23.40"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ef86cd5876211988985292b91c96a8f2d298df24e75989a43a3c73f2d4d8168b"
+dependencies = [
+ "once_cell",
+ "ring",
+ "rustls-pki-types",
+ "rustls-webpki",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "rustls-pki-types"
+version = "1.14.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "30a7197ae7eb376e574fe940d068c30fe0462554a3ddbe4eca7838e049c937a9"
+dependencies = [
+ "web-time",
+ "zeroize",
+]
+
+[[package]]
+name = "rustls-webpki"
+version = "0.103.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "61c429a8649f110dddef65e2a5ad240f747e85f7758a6bccc7e5777bd33f756e"
+dependencies = [
+ "ring",
+ "rustls-pki-types",
+ "untrusted",
+]
+
 [[package]]
 name = "rustversion"
 version = "1.0.22"
@@ -822,6 +1288,17 @@ dependencies = [
  "serde_core",
 ]
 
+[[package]]
+name = "serde_repr"
+version = "0.1.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "175ee3e80ae9982737ca543e96133087cbd9a485eecc3bc4de9c1a37b47ea59c"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "serde_urlencoded"
 version = "0.7.1"
@@ -932,6 +1409,7 @@ dependencies = [
  "slhx-axum",
  "slhx-build",
  "slhx-test",
+ "thirtyfour",
  "tokio",
 ]
 
@@ -968,7 +1446,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3a766e1110788c36f4fa1c2b71b387a7815aa65f88ce0229841826633d93723e"
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+checksum = "de844c262c8848816172cef550288e7dc6c7b7814b4ee56b3e1553f275f1858e"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
+
+[[package]]
+name = "zerocopy"
+version = "0.8.48"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eed437bf9d6692032087e337407a86f04cd8d6a16a37199ed57949d415bd68e9"
+dependencies = [
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70e3cd084b1788766f53af483dd21f93881ff30d7320490ec3ef7526d203bad4"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
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+checksum = "69faa1f2a1ea75661980b013019ed6687ed0e83d069bc1114e2cc74c6c04c4df"
+dependencies = [
+ "zerofrom-derive",
+]
+
+[[package]]
+name = "zerofrom-derive"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "11532158c46691caf0f2593ea8358fed6bbf68a0315e80aae9bd41fbade684a1"
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+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+checksum = "0f9152d31db0792fa83f70fb2f83148effb5c1f5b8c7686c3459e361d9bc20bf"
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+ "displaydoc",
+ "yoke",
+ "zerofrom",
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+ "yoke",
+ "zerofrom",
+ "zerovec-derive",
+]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "zmij"
 version = "1.0.21"
diff --git a/examples/techdemo/Cargo.toml b/examples/techdemo/Cargo.toml
index e10b7e5..41e4fb9 100644
--- a/examples/techdemo/Cargo.toml
+++ b/examples/techdemo/Cargo.toml
@@ -17,6 +17,7 @@ tokio = { version = "1", features = ["macros", "net", "rt-multi-thread", "time"]
 [dev-dependencies]
 scraper = "0.23"
 slhx-test = { path = "../../slhx-test" }
+thirtyfour = "0.35"
 
 [build-dependencies]
 slhx-build = { path = "../../slhx-build" }
diff --git a/examples/techdemo/README.md b/examples/techdemo/README.md
index 572fab5..b6a6ede 100644
--- a/examples/techdemo/README.md
+++ b/examples/techdemo/README.md
@@ -21,4 +21,5 @@ This is a polished Linear-style product demo for planning typed work across lane
 Verification:
 
     cargo test -p slhx-techdemo --test e2e
-    mutest -p slhx-techdemo -f examples/techdemo/src/main.rs -F 'registry' --test-package slhx-techdemo -j 2 --timeout 90
+    cargo test -p slhx-techdemo --test browser_e2e
+    mutest -p slhx-techdemo -f examples/techdemo/src/main.rs -F 'registry' -j 2 --timeout 90 -- --test e2e
diff --git a/examples/techdemo/src/main.rs b/examples/techdemo/src/main.rs
index c11c031..92bdb9d 100644
--- a/examples/techdemo/src/main.rs
+++ b/examples/techdemo/src/main.rs
@@ -101,7 +101,10 @@ async fn main() {
         .route("/slhx.js", get(runtime))
         .with_state(state);
 
-    let addr = SocketAddr::from(([127, 0, 0, 1], 3002));
+    let addr = std::env::var("SLHX_TECHDEMO_ADDR")
+        .ok()
+        .and_then(|addr| addr.parse().ok())
+        .unwrap_or_else(|| SocketAddr::from(([127, 0, 0, 1], 3002)));
     let listener = tokio::net::TcpListener::bind(addr).await.unwrap();
     println!("slhx techdemo: http://{addr}");
     axum::serve(listener, app).await.unwrap();
diff --git a/examples/techdemo/tests/browser_e2e.rs b/examples/techdemo/tests/browser_e2e.rs
new file mode 100644
index 0000000..cdad027
--- /dev/null
+++ b/examples/techdemo/tests/browser_e2e.rs
@@ -0,0 +1,198 @@
+use slhx_techdemo::ui;
+use std::process::{Child, Command, Stdio};
+use std::time::{Duration, Instant};
+use thirtyfour::prelude::*;
+
+const APP_ADDR: &str = "127.0.0.1:3012";
+const WEBDRIVER_ADDR: &str = "127.0.0.1:4445";
+
+struct ChildProcess {
+    child: Child,
+}
+
+impl ChildProcess {
+    fn spawn(mut command: Command) -> Self {
+        let child = command
+            .stdout(Stdio::null())
+            .stderr(Stdio::null())
+            .spawn()
+            .expect("spawn child process");
+        Self { child }
+    }
+}
+
+impl Drop for ChildProcess {
+    fn drop(&mut self) {
+        let _ = self.child.kill();
+        let _ = self.child.wait();
+    }
+}
+
+#[tokio::test]
+async fn browser_drives_typed_product_end_to_end() -> WebDriverResult<()> {
+    // req: examples/001 req: dx/008 req: form/002 req: page_swap/002 req: push/003
+    let mut app = Command::new(env!("CARGO_BIN_EXE_slhx-techdemo"));
+    app.env("SLHX_TECHDEMO_ADDR", APP_ADDR);
+    let _app = ChildProcess::spawn(app);
+    wait_for_tcp(APP_ADDR);
+
+    let mut webdriver = Command::new("geckodriver");
+    webdriver.arg("--port").arg("4445");
+    let _webdriver = ChildProcess::spawn(webdriver);
+    wait_for_tcp(WEBDRIVER_ADDR);
+
+    let mut caps = DesiredCapabilities::firefox();
+    caps.set_headless()?;
+    let driver = WebDriver::new(&format!("http://{WEBDRIVER_ADDR}"), caps).await?;
+
+    let result = async {
+        driver.goto(&format!("http://{APP_ADDR}/")).await?;
+        assert_text(&driver, "Rust owns the interaction graph").await?;
+        assert_text(&driver, "Compile checked handles").await?;
+        assert_text(&driver, "No selectors. Generated resources address every target.").await?;
+        wait_for_runtime(&driver).await?;
+
+        driver
+            .find(By::Css(&handle_selector(ui::control_center::handles::simulate_push.id().id)))
+            .await?
+            .click()
+            .await?;
+        wait_for_text(&driver, &slot_selector(ui::control_center::slots::notice.id().id), "Push simulated").await?;
+
+        driver
+            .execute(
+                r#"
+                document.querySelector("input[name='title']").value = "Browser verified issue";
+                document.querySelector("input[name='impact']").value = "8";
+                document.querySelector("select[name='lane']").value = "product";
+                "#,
+                Vec::new(),
+            )
+            .await?;
+        driver
+            .execute(
+                &format!(
+                    r#"
+                    return fetch("/", {{
+                        method: "POST",
+                        headers: {{ "Content-Type": "application/x-www-form-urlencoded" }},
+                        body: "__h={}&title=Browser+verified+issue&lane=product&impact=8"
+                    }})
+                    .then((response) => response.arrayBuffer())
+                    .then((buffer) => {{ window.slhx.applyBatch(buffer, document.querySelector("[data-slhx-root]")); return true; }});
+                    "#,
+                    ui::control_center::handles::launch_work.id().id
+                ),
+                Vec::new(),
+            )
+            .await?;
+
+        wait_for_text(&driver, &slot_selector(ui::control_center::slots::notice.id().id), "Launch accepted").await?;
+        assert_text(&driver, "Browser verified issue").await?;
+        assert_text(&driver, "width:88%").await?;
+
+        driver
+            .find(By::Css(&card_button_selector(ui::control_center::handles::spotlight_work.id().id, 4)))
+            .await?
+            .click()
+            .await?;
+        wait_for_text(
+            &driver,
+            &slot_selector(ui::control_center::slots::inspector.id().id),
+            "Browser verified issue · lane=Product · stage=Draft · impact=8",
+        )
+        .await?;
+
+        driver
+            .find(By::Css(&card_button_selector(ui::control_center::handles::advance_work.id().id, 4)))
+            .await?
+            .click()
+            .await?;
+        wait_for_text(&driver, ".work-card[data-key='4']", "Active").await?;
+
+        driver
+            .find(By::Css(&handle_selector(ui::control_center::handles::simulate_push.id().id)))
+            .await?
+            .click()
+            .await?;
+        wait_for_text(&driver, &slot_selector(ui::control_center::slots::live_feed.id().id), "SSE tick").await?;
+
+        driver.find(By::Css("a[href='/architecture']")).await?.click().await?;
+        wait_for_text(&driver, &slot_selector(ui::control_center::slots::inspector.id().id), "Page swap").await?;
+        assert!(driver.current_url().await?.as_str().ends_with("/architecture"));
+
+        driver.goto(&format!("http://{APP_ADDR}/")).await?;
+        wait_for_text(&driver, &slot_selector(ui::control_center::slots::live_feed.id().id), "SSE tick").await?;
+
+        Ok::<(), WebDriverError>(())
+    }
+    .await;
+
+    let quit = driver.quit().await;
+    result.and(quit)
+}
+
+fn wait_for_tcp(addr: &str) {
+    let deadline = Instant::now() + Duration::from_secs(8);
+    while Instant::now() < deadline {
+        if std::net::TcpStream::connect(addr).is_ok() {
+            return;
+        }
+        std::thread::sleep(Duration::from_millis(25));
+    }
+    panic!("timed out waiting for {addr}");
+}
+
+fn handle_selector(id: u32) -> String {
+    format!(r#"[data-hid="{id}"]"#)
+}
+
+fn slot_selector(id: u32) -> String {
+    format!(r#"[data-sid="{id}"]"#)
+}
+
+fn card_button_selector(handle_id: u32, work_id: u64) -> String {
+    format!(r#"[data-hid="{handle_id}"][data-work-id="{work_id}"]"#)
+}
+
+async fn wait_for_runtime(driver: &WebDriver) -> WebDriverResult<()> {
+    let deadline = Instant::now() + Duration::from_secs(8);
+    loop {
+        let loaded = driver
+            .execute("return !!window.slhx && window.slhx.roots().length > 0", Vec::new())
+            .await?
+            .json()
+            .as_bool()
+            .unwrap_or(false);
+        if loaded {
+            return Ok(());
+        }
+        if Instant::now() >= deadline {
+            panic!("timed out waiting for slhx runtime");
+        }
+        tokio::time::sleep(Duration::from_millis(50)).await;
+    }
+}
+
+async fn assert_text(driver: &WebDriver, text: &str) -> WebDriverResult<()> {
+    wait_for_text(driver, "body", text).await
+}
+
+async fn wait_for_text(driver: &WebDriver, selector: &str, text: &str) -> WebDriverResult<()> {
+    let deadline = Instant::now() + Duration::from_secs(8);
+    let by = By::Css(selector);
+    loop {
+        if let Ok(element) = driver.find(by.clone()).await {
+            let content = element.text().await.unwrap_or_default();
+            let html = element.inner_html().await.unwrap_or_default();
+            if content.contains(text) || html.contains(text) {
+                return Ok(());
+            }
+        }
+        if Instant::now() >= deadline {
+            let body = driver.find(By::Css("body")).await?.text().await.unwrap_or_default();
+            panic!("timed out waiting for {text:?} in {selector:?}; body={body:?}");
+        }
+        tokio::time::sleep(Duration::from_millis(50)).await;
+    }
+}