diff --git a/bun.lock b/bun.lock
index c68fa7f4..7b07a029 100644
--- a/bun.lock
+++ b/bun.lock
@@ -193,7 +193,7 @@
     },
     "packages/action": {
       "name": "@ultimat3/action",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/cache": "5.0.1",
         "@ultimat3/core": "5.0.1",
@@ -204,7 +204,7 @@
     },
     "packages/admin": {
       "name": "@ultimat3/admin",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/action": "5.0.1",
         "@ultimat3/ai": "5.0.1",
@@ -212,7 +212,7 @@
         "@ultimat3/core": "5.0.1",
         "@ultimat3/db": "5.0.1",
         "@ultimat3/entity": "5.0.1",
-        "@ultimat3/i18n": "1.2.0",
+        "@ultimat3/i18n": "5.0.1",
         "@ultimat3/jobs": "5.0.1",
         "@ultimat3/mcp": "5.0.1",
         "@ultimat3/money": "5.0.1",
@@ -225,7 +225,7 @@
     },
     "packages/ai": {
       "name": "@ultimat3/ai",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/action": "5.0.1",
         "@ultimat3/cache": "5.0.1",
@@ -240,7 +240,7 @@
     },
     "packages/auth": {
       "name": "@ultimat3/auth",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/core": "5.0.1",
         "@ultimat3/db": "5.0.1",
@@ -249,18 +249,19 @@
     },
     "packages/cache": {
       "name": "@ultimat3/cache",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/core": "5.0.1",
       },
     },
     "packages/cli": {
       "name": "@ultimat3/cli",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "bin": {
         "x": "./src/bin.ts",
       },
       "dependencies": {
+        "@babel/core": "^7.28.4",
         "@ultimat3/action": "5.0.1",
         "@ultimat3/admin": "5.0.1",
         "@ultimat3/ai": "5.0.1",
@@ -269,7 +270,7 @@
         "@ultimat3/db": "5.0.1",
         "@ultimat3/entity": "5.0.1",
         "@ultimat3/http": "5.0.1",
-        "@ultimat3/i18n": "1.2.0",
+        "@ultimat3/i18n": "5.0.1",
         "@ultimat3/jobs": "5.0.1",
         "@ultimat3/mail": "5.0.1",
         "@ultimat3/manifest": "5.0.1",
@@ -284,15 +285,16 @@
         "@ultimat3/storage": "5.0.1",
         "@ultimat3/testing": "5.0.1",
         "@ultimat3/time": "5.0.1",
+        "babel-preset-solid": "^1.9.15",
       },
     },
     "packages/core": {
       "name": "@ultimat3/core",
-      "version": "4.1.0",
+      "version": "5.0.1",
     },
     "packages/create-ultimate": {
       "name": "create-ultimate",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "bin": {
         "create-ultimate": "./src/bin.ts",
       },
@@ -302,7 +304,7 @@
     },
     "packages/db": {
       "name": "@ultimat3/db",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/core": "5.0.1",
       },
@@ -315,7 +317,7 @@
     },
     "packages/entity": {
       "name": "@ultimat3/entity",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/core": "5.0.1",
         "@ultimat3/db": "5.0.1",
@@ -325,31 +327,31 @@
     },
     "packages/flags": {
       "name": "@ultimat3/flags",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/core": "5.0.1",
       },
     },
     "packages/http": {
       "name": "@ultimat3/http",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/core": "5.0.1",
-        "@ultimat3/i18n": "4.1.0",
+        "@ultimat3/i18n": "5.0.1",
         "@ultimat3/schema": "5.0.1",
         "@ultimat3/time": "5.0.1",
       },
     },
     "packages/i18n": {
       "name": "@ultimat3/i18n",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
-        "@ultimat3/core": "4.1.0",
+        "@ultimat3/core": "5.0.1",
       },
     },
     "packages/jobs": {
       "name": "@ultimat3/jobs",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/core": "5.0.1",
         "@ultimat3/entity": "5.0.1",
@@ -359,10 +361,10 @@
     },
     "packages/mail": {
       "name": "@ultimat3/mail",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/core": "5.0.1",
-        "@ultimat3/i18n": "4.1.0",
+        "@ultimat3/i18n": "5.0.1",
         "@ultimat3/jobs": "5.0.1",
         "@ultimat3/schema": "5.0.1",
         "@ultimat3/time": "5.0.1",
@@ -370,7 +372,7 @@
     },
     "packages/manifest": {
       "name": "@ultimat3/manifest",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/action": "5.0.1",
         "@ultimat3/core": "5.0.1",
@@ -381,7 +383,7 @@
     },
     "packages/mcp": {
       "name": "@ultimat3/mcp",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/action": "5.0.1",
         "@ultimat3/core": "5.0.1",
@@ -394,7 +396,7 @@
     },
     "packages/money": {
       "name": "@ultimat3/money",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/core": "5.0.1",
         "@ultimat3/schema": "5.0.1",
@@ -402,14 +404,14 @@
     },
     "packages/policy": {
       "name": "@ultimat3/policy",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/core": "5.0.1",
       },
     },
     "packages/pwa": {
       "name": "@ultimat3/pwa",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/core": "5.0.1",
         "@ultimat3/seo": "5.0.1",
@@ -417,7 +419,7 @@
     },
     "packages/query": {
       "name": "@ultimat3/query",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/cache": "5.0.1",
         "@ultimat3/core": "5.0.1",
@@ -428,7 +430,7 @@
     },
     "packages/realtime": {
       "name": "@ultimat3/realtime",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/core": "5.0.1",
         "@ultimat3/query": "5.0.1",
@@ -437,22 +439,22 @@
     },
     "packages/render": {
       "name": "@ultimat3/render",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/cache": "5.0.1",
         "@ultimat3/core": "5.0.1",
-        "@ultimat3/i18n": "1.2.0",
+        "@ultimat3/i18n": "5.0.1",
         "@ultimat3/seo": "5.0.1",
         "sass": "1.102.0",
       },
     },
     "packages/schema": {
       "name": "@ultimat3/schema",
-      "version": "4.1.0",
+      "version": "5.0.1",
     },
     "packages/scraping": {
       "name": "@ultimat3/scraping",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/core": "5.0.1",
         "@ultimat3/jobs": "5.0.1",
@@ -462,27 +464,27 @@
     },
     "packages/seo": {
       "name": "@ultimat3/seo",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/core": "5.0.1",
       },
     },
     "packages/storage": {
       "name": "@ultimat3/storage",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/core": "5.0.1",
       },
     },
     "packages/testing": {
       "name": "@ultimat3/testing",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/cache": "5.0.1",
         "@ultimat3/core": "5.0.1",
         "@ultimat3/db": "5.0.1",
         "@ultimat3/entity": "5.0.1",
-        "@ultimat3/i18n": "4.1.0",
+        "@ultimat3/i18n": "5.0.1",
         "@ultimat3/jobs": "5.0.1",
         "@ultimat3/mail": "5.0.1",
         "@ultimat3/policy": "5.0.1",
@@ -493,17 +495,17 @@
     },
     "packages/time": {
       "name": "@ultimat3/time",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/core": "5.0.1",
       },
     },
     "packages/ui": {
       "name": "@ultimat3/ui",
-      "version": "4.1.0",
+      "version": "5.0.1",
       "dependencies": {
         "@ultimat3/core": "5.0.1",
-        "@ultimat3/i18n": "1.2.0",
+        "@ultimat3/i18n": "5.0.1",
         "@ultimat3/money": "5.0.1",
         "@ultimat3/time": "5.0.1",
       },
@@ -513,6 +515,42 @@
     },
   },
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+
     "@biomejs/biome": ["@biomejs/biome@2.5.5", "", { "optionalDependencies": { "@biomejs/cli-darwin-arm64": "2.5.5", "@biomejs/cli-darwin-x64": "2.5.5", "@biomejs/cli-linux-arm64": "2.5.5", "@biomejs/cli-linux-arm64-musl": "2.5.5", "@biomejs/cli-linux-x64": "2.5.5", "@biomejs/cli-linux-x64-musl": "2.5.5", "@biomejs/cli-win32-arm64": "2.5.5", "@biomejs/cli-win32-x64": "2.5.5" }, "bin": { "biome": "bin/biome" } }, "sha512-r1S8nFsAG1MY+vJFZALzIvwXAJv6ejDQ0mxP21Tgr9YK3ZFtjrvbBwDdNhx1rUqvccEIeNg20cYCNzl6Cr69pQ=="],
 
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@@ -533,6 +571,16 @@
 
     "@electric-sql/pglite": ["@electric-sql/pglite@0.5.4", "", {}, "sha512-yYZUyyXrHU7tPlCjwZQJ6hIG9DscdCCn7Uk0mYKwC1FeHX286AbcmFveMiRBEak8e9iPupjsoVImN3yJZVed2g=="],
 
+    "@jridgewell/gen-mapping": ["@jridgewell/gen-mapping@0.3.13", "", { "dependencies": { "@jridgewell/sourcemap-codec": "^1.5.0", "@jridgewell/trace-mapping": "^0.3.24" } }, "sha512-2kkt/7niJ6MgEPxF0bYdQ6etZaA+fQvDcLKckhy1yIQOzaoKjBBjSj63/aLVjYE3qhRt5dvM+uUyfCg6UKCBbA=="],
+
+    "@jridgewell/remapping": ["@jridgewell/remapping@2.3.5", "", { "dependencies": { "@jridgewell/gen-mapping": "^0.3.5", "@jridgewell/trace-mapping": "^0.3.24" } }, "sha512-LI9u/+laYG4Ds1TDKSJW2YPrIlcVYOwi2fUC6xB43lueCjgxV4lffOCZCtYFiH6TNOX+tQKXx97T4IKHbhyHEQ=="],
+
+    "@jridgewell/resolve-uri": ["@jridgewell/resolve-uri@3.1.2", "", {}, "sha512-bRISgCIjP20/tbWSPWMEi54QVPRZExkuD9lJL+UIxUKtwVJA8wW1Trb1jMs1RFXo1CBTNZ/5hpC9QvmKWdopKw=="],
+
+    "@jridgewell/sourcemap-codec": ["@jridgewell/sourcemap-codec@1.5.5", "", {}, "sha512-cYQ9310grqxueWbl+WuIUIaiUaDcj7WOq5fVhEljNVgRfOUhY9fy2zTvfoqWsnebh8Sl70VScFbICvJnLKB0Og=="],
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+    "@jridgewell/trace-mapping": ["@jridgewell/trace-mapping@0.3.31", "", { "dependencies": { "@jridgewell/resolve-uri": "^3.1.0", "@jridgewell/sourcemap-codec": "^1.4.14" } }, "sha512-zzNR+SdQSDJzc8joaeP8QQoCQr8NuYx2dIIytl1QeBEZHJ9uW6hebsrYgbz8hJwUQao3TWCMtmfV8Nu1twOLAw=="],
+
     "@parcel/watcher": ["@parcel/watcher@2.6.0", "", { "dependencies": { "detect-libc": "^2.0.3", "is-glob": "^4.0.3", "node-addon-api": "^7.0.0", "picomatch": "^4.0.4" }, "optionalDependencies": { "@parcel/watcher-android-arm64": "2.6.0", "@parcel/watcher-darwin-arm64": "2.6.0", "@parcel/watcher-darwin-x64": "2.6.0", "@parcel/watcher-freebsd-x64": "2.6.0", "@parcel/watcher-linux-arm-glibc": "2.6.0", "@parcel/watcher-linux-arm-musl": "2.6.0", "@parcel/watcher-linux-arm64-glibc": "2.6.0", "@parcel/watcher-linux-arm64-musl": "2.6.0", "@parcel/watcher-linux-x64-glibc": "2.6.0", "@parcel/watcher-linux-x64-musl": "2.6.0", "@parcel/watcher-win32-arm64": "2.6.0", "@parcel/watcher-win32-x64": "2.6.0" } }, "sha512-7FNeNl8NCE7aINx7WXiKQrPYZWC/hvrTsmk6zmxbI7LTXE7hVek/n8AfVgpe2y82zl3w0HvCHN0bVKMBoJcC0w=="],
 
     "@parcel/watcher-android-arm64": ["@parcel/watcher-android-arm64@2.6.0", "", { "os": "android", "cpu": "arm64" }, "sha512-trgpLSCKRC/huFjXX/Smh+0sWe4+YtKfktIToiMl59ghz7z+qkH6kMvNnUbLyRs9N11t8l4svSCs1+5B3rOAhA=="],
@@ -693,22 +741,52 @@
 
     "@ultimat3/ui": ["@ultimat3/ui@workspace:packages/ui"],
 
+    "babel-plugin-jsx-dom-expressions": ["babel-plugin-jsx-dom-expressions@0.40.10", "", { "dependencies": { "@babel/helper-module-imports": "7.18.6", "@babel/plugin-syntax-jsx": "^7.18.6", "@babel/types": "^7.20.7", "html-entities": "2.3.3", "parse5": "^7.1.2" }, "peerDependencies": { "@babel/core": "^7.20.12" } }, "sha512-lxve6Y02YiZTldB7efKpnbf1BH00XCFZNYYW235jSGsYaJNFtHrYlKV6/O+miHbjqpIr9FTe5+0no4hofAMbfA=="],
+
+    "babel-preset-solid": ["babel-preset-solid@1.9.15", "", { "dependencies": { "babel-plugin-jsx-dom-expressions": "^0.40.10" }, "peerDependencies": { "@babel/core": "^7.0.0", "solid-js": "^1.9.15" }, "optionalPeers": ["solid-js"] }, "sha512-GBmg1OiPb+OwcH51XbDAKPtvrPfQW7rCJTJxcp8+yhtWwN+kqnbEJk2SgVybd+uhTxTKAvjaFyiQSr/eUZBwzg=="],
+
+    "baseline-browser-mapping": ["baseline-browser-mapping@2.11.16", "", { "bin": { "baseline-browser-mapping": "dist/cli.cjs" } }, "sha512-H/bNPUFHewJHyCTdjn1n3Pit5+2GmWT6mmeHImPX+8MA9NA6b67jO4gYmi4jTbCJb2otq34KMZnovndDPqJwhQ=="],
+
+    "browserslist": ["browserslist@4.28.8", "", { "dependencies": { "baseline-browser-mapping": "^2.11.12", "caniuse-lite": "^1.0.30001809", "electron-to-chromium": "^1.5.402", "node-releases": "^2.0.53", "update-browserslist-db": "^1.3.0" }, "bin": { "browserslist": "cli.js" } }, "sha512-V2NpofLblG64mfOtSgDhOJESZEGogzDMBv/q+W6oc4LXWP/q75eOXoOaaOu1EOadB9U4Bwx/e0yzbvwKH8zalA=="],
+
     "bun-types": ["bun-types@1.3.14", "", { "dependencies": { "@types/node": "*" } }, "sha512-4N0ig0fEomHt5R0KCFWjovxow98rIoRwKolrYdCcknNwMekCXRnWEUvgu5soYV8QXtVsrUD8B95MBOZGPvr6KQ=="],
 
+    "caniuse-lite": ["caniuse-lite@1.0.30001809", "", {}, "sha512-xxWVywk6a6Arlk+hymeycyn/VgqEfLDxupvhH/xiY5SJ/18kmi9o6MiO320DCUzypORHLtvh0I4i04tUhCNHNQ=="],
+
     "chokidar": ["chokidar@5.0.0", "", { "dependencies": { "readdirp": "^5.0.0" } }, "sha512-TQMmc3w+5AxjpL8iIiwebF73dRDF4fBIieAqGn9RGCWaEVwQ6Fb2cGe31Yns0RRIzii5goJ1Y7xbMwo1TxMplw=="],
 
+    "convert-source-map": ["convert-source-map@2.0.0", "", {}, "sha512-Kvp459HrV2FEJ1CAsi1Ku+MY3kasH19TFykTz2xWmMeq6bk2NU3XXvfJ+Q61m0xktWwt+1HSYf3JZsTms3aRJg=="],
+
     "create-ultimate": ["create-ultimate@workspace:packages/create-ultimate"],
 
     "csstype": ["csstype@3.2.3", "", {}, "sha512-z1HGKcYy2xA8AGQfwrn0PAy+PB7X/GSj3UVJW9qKyn43xWa+gl5nXmU4qqLMRzWVLFC8KusUX8T/0kCiOYpAIQ=="],
 
+    "debug": ["debug@4.4.3", "", { "dependencies": { "ms": "^2.1.3" }, "peerDependencies": { "supports-color": "*" }, "optionalPeers": ["supports-color"] }, "sha512-RGwwWnwQvkVfavKVt22FGLw+xYSdzARwm0ru6DhTVA3umU5hZc28V3kO4stgYryrTlLpuvgI9GiijltAjNbcqA=="],
+
     "detect-libc": ["detect-libc@2.1.2", "", {}, "sha512-Btj2BOOO83o3WyH59e8MgXsxEQVcarkUOpEYrubB0urwnN10yQ364rsiByU11nZlqWYZm05i/of7io4mzihBtQ=="],
 
+    "electron-to-chromium": ["electron-to-chromium@1.5.411", "", {}, "sha512-gglkxzokjHfawpGxq75XdBV2/l3BAPzrsMs70qgaZdTW5rpV1tC4MdgJVP9fN126bODA4ZJQkn1wryEzJyQXIg=="],
+
+    "entities": ["entities@6.0.1", "", {}, "sha512-aN97NXWF6AWBTahfVOIrB/NShkzi5H7F9r1s9mD3cDj4Ko5f2qhhVoYMibXF7GlLveb/D2ioWay8lxI97Ven3g=="],
+
+    "escalade": ["escalade@3.2.0", "", {}, "sha512-WUj2qlxaQtO4g6Pq5c29GTcWGDyd8itL8zTlipgECz3JesAiiOKotd8JU6otB3PACgG6xkJUyVhboMS+bje/jA=="],
+
+    "gensync": ["gensync@1.0.0-beta.2", "", {}, "sha512-3hN7NaskYvMDLQY55gnW3NQ+mesEAepTqlg+VEbj7zzqEMBVNhzcGYYeqFo/TlYz6eQiFcp1HcsCZO+nGgS8zg=="],
+
+    "html-entities": ["html-entities@2.3.3", "", {}, "sha512-DV5Ln36z34NNTDgnz0EWGBLZENelNAtkiFA4kyNOG2tDI6Mz1uSWiq1wAKdyjnJwyDiDO7Fa2SO1CTxPXL8VxA=="],
+
     "immutable": ["immutable@5.1.9", "", {}, "sha512-m8nVez3rwrgmWxtLMt1ZYXB2Lv7OKYn/disyxAlSDYAlKSlFoPPfIAmAM/M5xqL4m4C/wAPw7S2/CNaUii1Hxg=="],
 
     "is-extglob": ["is-extglob@2.1.1", "", {}, "sha512-SbKbANkN603Vi4jEZv49LeVJMn4yGwsbzZworEoyEiutsN3nJYdbO36zfhGJ6QEDpOZIFkDtnq5JRxmvl3jsoQ=="],
 
     "is-glob": ["is-glob@4.0.3", "", { "dependencies": { "is-extglob": "^2.1.1" } }, "sha512-xelSayHH36ZgE7ZWhli7pW34hNbNl8Ojv5KVmkJD4hBdD3th8Tfk9vYasLM+mXWOZhFkgZfxhLSnrwRr4elSSg=="],
 
+    "js-tokens": ["js-tokens@4.0.0", "", {}, "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ=="],
+
+    "jsesc": ["jsesc@3.1.0", "", { "bin": { "jsesc": "bin/jsesc" } }, "sha512-/sM3dO2FOzXjKQhJuo0Q173wf2KOo8t4I8vHy6lF9poUp7bKT0/NHE8fPX23PwfhnykfqnC2xRxOnVw5XuGIaA=="],
+
+    "json5": ["json5@2.2.3", "", { "bin": { "json5": "lib/cli.js" } }, "sha512-XmOWe7eyHYH14cLdVPoyg+GOH3rYX++KpzrylJwSW98t3Nk+U8XOl8FWKOgwtzdb8lXGf6zYwDUzeHMWfxasyg=="],
+
     "lefthook": ["lefthook@2.1.10", "", { "optionalDependencies": { "lefthook-darwin-arm64": "2.1.10", "lefthook-darwin-x64": "2.1.10", "lefthook-freebsd-arm64": "2.1.10", "lefthook-freebsd-x64": "2.1.10", "lefthook-linux-arm64": "2.1.10", "lefthook-linux-x64": "2.1.10", "lefthook-openbsd-arm64": "2.1.10", "lefthook-openbsd-x64": "2.1.10", "lefthook-windows-arm64": "2.1.10", "lefthook-windows-x64": "2.1.10" }, "bin": { "lefthook": "bin/index.js" } }, "sha512-K7mM4WoqMwqfXYK11EHy+lSH1uW8XHni3Yn/bSqyerPkUPygGdf3xn18JoV5HyA06xuQL3ofGAOjG01QX9oJ4w=="],
 
     "lefthook-darwin-arm64": ["lefthook-darwin-arm64@2.1.10", "", { "os": "darwin", "cpu": "arm64" }, "sha512-nw+X8wRNDoUUV6WSteyKBbcLySq+fsmZt5WV/s50ZJpysmsDKJOUMln6SllNfP+60dzUahAO7REco/2633BsLg=="],
@@ -731,18 +809,30 @@
 
     "lefthook-windows-x64": ["lefthook-windows-x64@2.1.10", "", { "os": "win32", "cpu": "x64" }, "sha512-c/XH8YZtylG4XaxzqFfXluvq2LXq2W/p54Bnzn3+Z7E5X2Fk3JlFJAibulMbIt2+w8T7UI/r97ok5GqE4kGaeA=="],
 
+    "lru-cache": ["lru-cache@5.1.1", "", { "dependencies": { "yallist": "^3.0.2" } }, "sha512-KpNARQA3Iwv+jTA0utUVVbrh+Jlrr1Fv0e56GGzAFOXN7dk/FviaDW8LHmK52DlcH4WP2n6gI8vN1aesBFgo9w=="],
+
+    "ms": ["ms@2.1.3", "", {}, "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA=="],
+
     "nats": ["nats@2.29.3", "", { "dependencies": { "nkeys.js": "1.1.0" } }, "sha512-tOQCRCwC74DgBTk4pWZ9V45sk4d7peoE2njVprMRCBXrhJ5q5cYM7i6W+Uvw2qUrcfOSnuisrX7bEx3b3Wx4QA=="],
 
     "nkeys.js": ["nkeys.js@1.1.0", "", { "dependencies": { "tweetnacl": "1.0.3" } }, "sha512-tB/a0shZL5UZWSwsoeyqfTszONTt4k2YS0tuQioMOD180+MbombYVgzDUYHlx+gejYK6rgf08n/2Df99WY0Sxg=="],
 
     "node-addon-api": ["node-addon-api@7.1.1", "", {}, "sha512-5m3bsyrjFWE1xf7nz7YXdN4udnVtXK6/Yfgn5qnahL6bCkf2yKt4k3nuTKAtT4r3IG8JNR2ncsIMdZuAzJjHQQ=="],
 
+    "node-releases": ["node-releases@2.0.53", "", {}, "sha512-D9UOmYG3UH1V+ENW56t5QXBwJw1YEY18ruVeus89Rw+SyIgjPkCO84bRzO3uNIYosJbNwiabWVn48o3uJLjxFQ=="],
+
+    "parse5": ["parse5@7.3.0", "", { "dependencies": { "entities": "^6.0.0" } }, "sha512-IInvU7fabl34qmi9gY8XOVxhYyMyuH2xUNpb2q8/Y+7552KlejkRvqvD19nMoUW/uQGGbqNpA6Tufu5FL5BZgw=="],
+
+    "picocolors": ["picocolors@1.1.1", "", {}, "sha512-xceH2snhtb5M9liqDsmEw56le376mTZkEX/jEb/RxNFyegNul7eNslCXP9FDj/Lcu0X8KEyMceP2ntpaHrDEVA=="],
+
     "picomatch": ["picomatch@4.0.5", "", {}, "sha512-RvwwcruNjI1ncT5xRakeyS9Lf8lcItv34KD+aif+VH9kduAyfYBipGh12274xtenIPZ119/R9BdTBa8gAwSh0A=="],
 
     "readdirp": ["readdirp@5.1.1", "", {}, "sha512-Kko+Y5XQ6fM+Ce3dq3m9YGxnacYZYl9cA1wZjaF3Vbry2L3i1qVg8+CAgNPsXRArPMUMCaOR7oa9Nqntc43JKA=="],
 
     "sass": ["sass@1.102.0", "", { "dependencies": { "chokidar": "^5.0.0", "immutable": "^5.1.5", "source-map-js": ">=0.6.2 <2.0.0" }, "optionalDependencies": { "@parcel/watcher": "^2.4.1" }, "bin": { "sass": "sass.js" } }, "sha512-NSOyTnaQF7rTAEOtI2fwb386vL+akyiQLBZu8Na7hXCb+umJy0GAqlcMIaqACZ6Z1VgTBS4K9PG6B3IdjHGJsw=="],
 
+    "semver": ["semver@6.3.1", "", { "bin": { "semver": "bin/semver.js" } }, "sha512-BR7VvDCVHO+q2xBEWskxS6DJE1qRnb7DxzUrogb71CWoSficBxYsiAGd+Kl0mmq/MprG9yArRkyrQxTO6XjMzA=="],
+
     "seroval": ["seroval@1.5.6", "", {}, "sha512-rVQVWjjSvlINzaQPZH5JFqsqEsIWdTxY3iJZCnTL/5gQbXIRooVZKI60tVCkOVfzcRPejboxO2t0P89dg5mQaA=="],
 
     "seroval-plugins": ["seroval-plugins@1.5.6", "", { "peerDependencies": { "seroval": "^1.0" } }, "sha512-HXuLAX2pu/UByPpaeo/TaMfvMIi+1QqIoPJYCcAtU8QkVNwgR6MPlGuCQTErV1JwraaMbYaWVIBX7mppzGLATQ=="],
@@ -758,5 +848,11 @@
     "typescript": ["typescript@7.0.2", "", { "optionalDependencies": { "@typescript/typescript-aix-ppc64": "7.0.2", "@typescript/typescript-darwin-arm64": "7.0.2", "@typescript/typescript-darwin-x64": "7.0.2", "@typescript/typescript-freebsd-arm64": "7.0.2", "@typescript/typescript-freebsd-x64": "7.0.2", "@typescript/typescript-linux-arm": "7.0.2", "@typescript/typescript-linux-arm64": "7.0.2", "@typescript/typescript-linux-loong64": "7.0.2", "@typescript/typescript-linux-mips64el": "7.0.2", "@typescript/typescript-linux-ppc64": "7.0.2", "@typescript/typescript-linux-riscv64": "7.0.2", "@typescript/typescript-linux-s390x": "7.0.2", "@typescript/typescript-linux-x64": "7.0.2", "@typescript/typescript-netbsd-arm64": "7.0.2", "@typescript/typescript-netbsd-x64": "7.0.2", "@typescript/typescript-openbsd-arm64": "7.0.2", "@typescript/typescript-openbsd-x64": "7.0.2", "@typescript/typescript-sunos-x64": "7.0.2", "@typescript/typescript-win32-arm64": "7.0.2", "@typescript/typescript-win32-x64": "7.0.2" }, "bin": { "tsc": "bin/tsc" } }, "sha512-8FYau96o3NKOhbjKi/qNvG/W5jhzxkbdm5sj9AbZ/5T5sWqn3hJgLfGx27sRKZWTvyzCP8dLRBTf5tBTSRVUNA=="],
 
     "undici-types": ["undici-types@8.3.0", "", {}, "sha512-j375ScV60dom+YkPFIfTLcOiPxkN/buHz5GobjLhixFuANaNs3C9l4GmrWqejgXWJ7BbJcFYpTEUkS1Ge8bpZQ=="],
+
+    "update-browserslist-db": ["update-browserslist-db@1.3.1", "", { "dependencies": { "escalade": "^3.2.0", "picocolors": "^1.1.1" }, "peerDependencies": { "browserslist": ">= 4.21.0" }, "bin": { "update-browserslist-db": "cli.js" } }, "sha512-ZZ61DsRsOnakl74HAmp3oSN4aXUmEWXf+i/yv0h7tIBfICc3VdrFErQKUUKPgu3AMsTUMbcongALEN4l6GSUrQ=="],
+
+    "yallist": ["yallist@3.1.1", "", {}, "sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g=="],
+
+    "babel-plugin-jsx-dom-expressions/@babel/helper-module-imports": ["@babel/helper-module-imports@7.18.6", "", { "dependencies": { "@babel/types": "^7.18.6" } }, "sha512-0NFvs3VkuSYbFi1x2Vd6tKrywq+z/cLeYC/RJNFrIX/30Bf5aiGYbtvGXolEktzJH8o5E5KJ3tT+nkxuuZFVlA=="],
   }
 }
diff --git a/packages/cli/package.json b/packages/cli/package.json
index d9d8f163..afbf9893 100644
--- a/packages/cli/package.json
+++ b/packages/cli/package.json
@@ -22,6 +22,7 @@
   "files": [
     "src",
     "!src/**/*.test.ts",
+    "types",
     "CLAUDE.md",
     "README.md",
     "LICENSE"
@@ -35,6 +36,7 @@
     "dev": "bun run src/bin.ts dev"
   },
   "dependencies": {
+    "@babel/core": "^7.28.4",
     "@ultimat3/action": "5.0.1",
     "@ultimat3/admin": "5.0.1",
     "@ultimat3/ai": "5.0.1",
@@ -57,6 +59,7 @@
     "@ultimat3/seo": "5.0.1",
     "@ultimat3/storage": "5.0.1",
     "@ultimat3/testing": "5.0.1",
-    "@ultimat3/time": "5.0.1"
+    "@ultimat3/time": "5.0.1",
+    "babel-preset-solid": "^1.9.15"
   }
 }
diff --git a/packages/cli/src/island-bundle.test.ts b/packages/cli/src/island-bundle.test.ts
index d0d03b8a..82061c6c 100644
--- a/packages/cli/src/island-bundle.test.ts
+++ b/packages/cli/src/island-bundle.test.ts
@@ -6,6 +6,7 @@ import { rm } from 'node:fs/promises';
 import { join } from 'node:path';
 import { UltimateError } from '@ultimat3/core';
 import { buildIslands, discoverIslands, ISLAND_BASE_PATH, islandBundle } from './island-bundle';
+import { transformIslandTsx } from './solid-loader';
 
 const ROOT = join(import.meta.dir, '..', '.island-fixture');
 
@@ -111,3 +112,362 @@ describe('resolverFor', () => {
     expect((thrown as UltimateError).message).toContain('apps/web/site/missing.island.tsx');
   });
 });
+
+// A minimal DOM, because `bun test` has none and no DOM library may be added. It implements what
+// compiled Solid touches and nothing else: `nodeType`, `Text.data`, `insertBefore`/`replaceChild`,
+// `className`, delegated `$$event` properties, and a `<template>` whose `innerHTML` is parsed —
+// `generate: 'dom'` builds every element from `_$template("<button …>")`, so a stub without one
+// cannot run a single compiled island.
+class FakeNode {
+  readonly nodeType: number = 1;
+  children: FakeNode[] = [];
+  parentNode: FakeNode | null = null;
+  appendChild(child: FakeNode): FakeNode {
+    child.parentNode = this;
+    this.children.push(child);
+    return child;
+  }
+  insertBefore(child: FakeNode, ref: FakeNode | null): FakeNode {
+    const at = ref === null ? -1 : this.children.indexOf(ref);
+    child.parentNode = this;
+    this.children.splice(at < 0 ? this.children.length : at, 0, child);
+    return child;
+  }
+  replaceChild(next: FakeNode, prev: FakeNode): FakeNode {
+    const at = this.children.indexOf(prev);
+    if (at >= 0) this.children[at] = next;
+    next.parentNode = this;
+    return prev;
+  }
+  removeChild(child: FakeNode): FakeNode {
+    this.children = this.children.filter((each) => each !== child);
+    return child;
+  }
+  remove(): void {
+    this.parentNode?.removeChild(this);
+  }
+  cloneNode(deep?: boolean): FakeNode {
+    const copy = new FakeNode();
+    if (deep === true) for (const child of this.children) copy.appendChild(child.cloneNode(true));
+    return copy;
+  }
+  get childNodes(): readonly FakeNode[] {
+    return this.children;
+  }
+  get firstChild(): FakeNode | null {
+    return this.children[0] ?? null;
+  }
+  get nextSibling(): FakeNode | null {
+    const siblings = this.parentNode?.children ?? [];
+    return siblings[siblings.indexOf(this) + 1] ?? null;
+  }
+  get textContent(): string {
+    return this.children.map((child) => child.textContent).join('');
+  }
+  set textContent(text: string) {
+    this.children = text === '' ? [] : [new FakeText(text)];
+  }
+}
+
+// `data`, not a private field: Solid updates a text node in place through `node.data = value`, and
+// a stub without it reports a mount that renders once and never re-renders.
+class FakeText extends FakeNode {
+  override readonly nodeType = 3;
+  constructor(public data: string) {
+    super();
+  }
+  override get textContent(): string {
+    return this.data;
+  }
+  override set textContent(text: string) {
+    this.data = text;
+  }
+  override cloneNode(): FakeText {
+    return new FakeText(this.data);
+  }
+}
+
+class FakeElement extends FakeNode {
+  readonly attributes = new Map<string, string>();
+  readonly listeners = new Map<string, (event: unknown) => void>();
+  readonly classList = { add: (): void => {} };
+  readonly style = {};
+  constructor(readonly tagName: string) {
+    super();
+  }
+  get nodeName(): string {
+    return this.tagName.toUpperCase();
+  }
+  /** `_$className` assigns the PROPERTY, never the attribute — the class assertions read this. */
+  get className(): string {
+    return this.attributes.get('class') ?? '';
+  }
+  set className(value: string) {
+    this.attributes.set('class', String(value));
+  }
+  setAttribute(name: string, value: string): void {
+    this.attributes.set(name, String(value));
+  }
+  getAttribute(name: string): string | null {
+    return this.attributes.get(name) ?? null;
+  }
+  hasAttribute(name: string): boolean {
+    return this.attributes.has(name);
+  }
+  removeAttribute(name: string): void {
+    this.attributes.delete(name);
+  }
+  addEventListener(name: string, fn: (event: unknown) => void): void {
+    this.listeners.set(name, fn);
+  }
+  removeEventListener(name: string): void {
+    this.listeners.delete(name);
+  }
+  override cloneNode(deep?: boolean): FakeElement {
+    const copy = new FakeElement(this.tagName);
+    for (const [name, value] of this.attributes) copy.attributes.set(name, value);
+    if (deep === true) for (const child of this.children) copy.appendChild(child.cloneNode(true));
+    return copy;
+  }
+}
+
+class FakeTemplate extends FakeElement {
+  content: FakeNode = new FakeNode();
+  constructor() {
+    super('template');
+  }
+  set innerHTML(html: string) {
+    this.content = parseHtml(html);
+  }
+}
+
+const VOID_TAGS = new Set(['br', 'hr', 'img', 'input', 'meta', 'link']);
+const TOKEN =
+  /<(\/?)([a-zA-Z][\w-]*)((?:\s+[^\s=/>]+(?:=(?:"[^"]*"|'[^']*'|[^\s>]+))?)*)\s*(\/?)>|([^<]+)/g;
+
+/** Only what `babel-preset-solid` emits into a template: tags, static attributes and text. */
+function parseHtml(html: string): FakeNode {
+  const root = new FakeNode();
+  const open: FakeNode[] = [root];
+  for (const match of html.matchAll(TOKEN)) {
+    const parent = open[open.length - 1] as FakeNode;
+    if (match[5] !== undefined) {
+      parent.appendChild(new FakeText(match[5]));
+      continue;
+    }
+    if (match[1] === '/') {
+      if (open.length > 1) open.pop();
+      continue;
+    }
+    const element = new FakeElement(match[2] as string);
+    for (const attr of (match[3] ?? '').matchAll(
+      /([^\s=/>]+)(?:=(?:"([^"]*)"|'([^']*)'|([^\s>]+)))?/g,
+    )) {
+      if (attr[1] !== undefined) element.setAttribute(attr[1], attr[2] ?? attr[3] ?? attr[4] ?? '');
+    }
+    parent.appendChild(element);
+    if (match[4] !== '/' && !VOID_TAGS.has(element.tagName)) open.push(element);
+  }
+  return root;
+}
+
+const DOM_GLOBALS: Readonly<Record<string, unknown>> = {
+  // Solid's event delegation reads `window` before it reads anything else.
+  window: globalThis,
+  Element: FakeElement,
+  SVGElement: FakeElement,
+  Node: FakeNode,
+  Text: FakeText,
+  document: {
+    createElement: (tag: string): FakeElement =>
+      tag === 'template' ? new FakeTemplate() : new FakeElement(tag),
+    createElementNS: (_ns: string, tag: string): FakeElement => new FakeElement(tag),
+    createTextNode: (text: string): FakeText => new FakeText(text),
+    createComment: (): FakeText => new FakeText(''),
+    importNode: (node: FakeNode, deep?: boolean): FakeNode => node.cloneNode(deep),
+    addEventListener: (): void => {},
+    removeEventListener: (): void => {},
+  },
+};
+
+/** Installed for one assertion and taken straight back out: these are process-global. */
+async function withFakeDom<T>(body: () => Promise<T>): Promise<T> {
+  const host = globalThis as unknown as Record<string, unknown>;
+  const saved = new Map(Object.keys(DOM_GLOBALS).map((key) => [key, host[key]]));
+  Object.assign(host, DOM_GLOBALS);
+  try {
+    return await body();
+  } finally {
+    for (const [key, value] of saved) {
+      if (value === undefined) delete host[key];
+      else host[key] = value;
+    }
+  }
+}
+
+/** The delegated handler Solid parks on the node, or a listener it attached — either counts. */
+function clickHandlerOf(element: FakeElement): ((event: unknown) => void) | undefined {
+  const delegated = (element as unknown as { $$click?: (event: unknown) => void }).$$click;
+  return delegated ?? element.listeners.get('click');
+}
+
+interface Mounted {
+  readonly code: string;
+  readonly el: FakeElement;
+  readonly button: FakeElement;
+  click(): void;
+}
+
+/**
+ * Build the island at `ISLAND`, import the chunk the way `hydrate.ts` does and run its `mount`.
+ * A unique chunk name per call: a module is cached by resolved path for the life of the process.
+ */
+async function mountIsland(props: unknown): Promise<Mounted> {
+  const chunk = (await buildIslands(ROOT)).chunks[0];
+  const code = chunk?.code ?? '';
+  const out = join(ROOT, `chunk-${Math.random().toString(36).slice(2)}.mjs`);
+  await Bun.write(out, code);
+  return withFakeDom(async () => {
+    const entry = (await import(out)) as { mount: (el: unknown, props: unknown) => void };
+    const el = new FakeElement('div');
+    entry.mount(el, props);
+    const button = el.children[0] as FakeElement;
+    return { code, el, button, click: (): void => clickHandlerOf(button)?.({}) };
+  });
+}
+
+const ISLAND = 'apps/web/site/counter.island.tsx';
+
+// The island an author actually writes: `{n()}` straight into the markup, `class={…}` straight onto
+// the element, no hand-written thunk anywhere. Solid's reactivity is a COMPILE-time contract, so
+// this exact source is dead under any runtime factory — `jsxFactory` hands `h()` an evaluated
+// number and an evaluated string, outside any tracking scope, and the island paints correctly and
+// never updates again with no error anywhere.
+const NAIVE_ISLAND = `import { createSignal } from 'solid-js';
+import { render } from 'solid-js/web';
+
+export interface CounterProps {
+  readonly label: string;
+}
+
+export function mount(el: HTMLElement, props: CounterProps): void {
+  const [n, setN] = createSignal(0);
+  render(
+    () => (
+      <button type="button" class={n() > 0 ? 'pos' : 'zero'} onClick={() => setN(n() + 1)}>
+        {props.label} {n()}
+      </button>
+    ),
+    el,
+  );
+}
+`;
+
+/** The same island written with explicit thunks and a fragment. Must keep working. */
+const THUNK_ISLAND = `import { createSignal } from 'solid-js';
+import { render } from 'solid-js/web';
+
+export function mount(el: HTMLElement, props: { readonly label: string }): void {
+  const [clicks, setClicks] = createSignal(0);
+  const Counter = () => (
+    <>
+      <button type="button" onClick={() => setClicks(clicks() + 1)}>
+        {() => props.label + ' ' + clicks()}
+      </button>
+    </>
+  );
+  render(() => <Counter />, el);
+}
+`;
+
+/** An island importing a PLAIN `.tsx` component — the case a `.island.tsx`-only filter breaks. */
+const COMPOSED_ISLAND = `import { createSignal } from 'solid-js';
+import { render } from 'solid-js/web';
+import { Badge } from './badge';
+
+export function mount(el: HTMLElement): void {
+  const [n, setN] = createSignal(0);
+  render(() => <button type="button" onClick={() => setN(n() + 1)}><Badge n={n()} /></button>, el);
+}
+`;
+
+const BADGE_COMPONENT = `export function Badge(props: { readonly n: number }) {
+  return <span class="badge">{props.n}</span>;
+}
+`;
+
+describe('an island that renders JSX', () => {
+  test('the naive island — no hand-written thunk — is reactive in text AND in an attribute', async () => {
+    await write(ISLAND, NAIVE_ISLAND);
+    const mounted = await mountIsland({ label: 'count' });
+
+    expect(mounted.button.tagName).toBe('button');
+    expect(mounted.el.textContent).toBe('count 0');
+    expect(mounted.button.className).toBe('zero');
+
+    mounted.click();
+
+    // Text and attribute bindings fail INDEPENDENTLY — a compiler emitting the wrong effect
+    // convention keeps text working while every attribute silently dies — so both are asserted.
+    expect(mounted.el.textContent).toBe('count 1');
+    expect(mounted.button.className).toBe('pos');
+  });
+
+  test('the transform emits Solid compiled output, never a runtime hyperscript call', async () => {
+    const out = await transformIslandTsx(NAIVE_ISLAND, '/app/counter.island.tsx');
+
+    // `_$insert(el, n, …)` passes the GETTER, and `_$effect(() => _$className(…))` wraps the
+    // attribute — those two lines are the whole difference between reactive and dead.
+    expect(out).toContain('_$template');
+    expect(out).toContain('_$insert');
+    expect(out).toContain('_$effect');
+    // The factory the first cut shipped. If this string is back, so is the eager-argument bug.
+    expect(out).not.toContain('__xh(');
+  });
+
+  test('the chunk carries no React free variable', async () => {
+    await write(ISLAND, NAIVE_ISLAND);
+    const mounted = await mountIsland({ label: 'count' });
+
+    // `React` is undefined in a browser chunk that imports nothing: `mount` throws on its first
+    // line, forever, and `Bun.build` still answers `success: true` with no log.
+    expect(mounted.code).not.toMatch(/\bReact\b/);
+  });
+
+  test('an island importing a plain .tsx compiles that component too', async () => {
+    await write(ISLAND, COMPOSED_ISLAND);
+    await write('apps/web/site/badge.tsx', BADGE_COMPONENT);
+    const mounted = await mountIsland({});
+
+    // A `.island.tsx`-only filter leaves `badge.tsx` to Bun's own bundler, which reads the app's
+    // `jsx: "preserve"` and emits `React.createElement("span", …)` — the original bug, one import
+    // away. The island build's graph only ever holds islands and what they import, so `.tsx` is
+    // already exactly the set that ships to a browser.
+    expect(mounted.code).not.toMatch(/\bReact\b/);
+    expect(mounted.el.textContent).toBe('0');
+    mounted.click();
+    expect(mounted.el.textContent).toBe('1');
+  });
+
+  test('an island written with explicit thunks keeps working', async () => {
+    await write(ISLAND, THUNK_ISLAND);
+    const mounted = await mountIsland({ label: 'clicks' });
+
+    expect(mounted.el.textContent).toBe('clicks 0');
+    mounted.click();
+    expect(mounted.el.textContent).toBe('clicks 1');
+  });
+
+  test('the transform cache is keyed by path, so an edited island recompiles', async () => {
+    const path = '/app/counter.island.tsx';
+    const first = await transformIslandTsx('export const a = <b>one</b>;\n', path);
+    // Same path, different source: a cache keyed by path alone would answer the stale chunk here,
+    // which in `x dev` is an edit that never reaches the browser.
+    const second = await transformIslandTsx('export const a = <b>two</b>;\n', path);
+
+    expect(first).toContain('one');
+    expect(second).toContain('two');
+    // And the same source is answered from the cache rather than recompiled.
+    expect(await transformIslandTsx('export const a = <b>two</b>;\n', path)).toBe(second);
+  });
+});
diff --git a/packages/cli/src/island-bundle.ts b/packages/cli/src/island-bundle.ts
index 96706e68..35d8778c 100644
--- a/packages/cli/src/island-bundle.ts
+++ b/packages/cli/src/island-bundle.ts
@@ -13,6 +13,7 @@ import {
   islandModuleId,
 } from '@ultimat3/render';
 import { IslandBuildFailedError } from './errors';
+import { solidJsxPlugin } from './solid-loader';
 
 /**
  * Where a chunk is served from, in `x dev`, in the container and in a static export — one base
@@ -78,6 +79,12 @@ async function buildOne(root: string, file: string): Promise<IslandChunk> {
       format: 'esm',
       splitting: false,
       minify: true,
+      // A build with no `plugins` is a build with no JSX transform: `Bun.plugin` installs into the
+      // RUNTIME's loader and `Bun.build` walks its own graph, so render's `.tsx` loader never sees
+      // an island. The app's tsconfig says `jsx: "preserve"`, which makes the bundler fall back to
+      // classic `React.createElement` — emitted into a browser chunk that imports no React, with
+      // `success: true` and no log. Every island shipped that way through five majors.
+      plugins: [solidJsxPlugin],
     });
   } catch (error) {
     throw new IslandBuildFailedError({ file, logs: describeBuildError(error) });
diff --git a/packages/cli/src/solid-loader.ts b/packages/cli/src/solid-loader.ts
new file mode 100644
index 00000000..cfad6d5b
--- /dev/null
+++ b/packages/cli/src/solid-loader.ts
@@ -0,0 +1,127 @@
+// The JSX transform every island chunk is built with: `.tsx` → Solid's COMPILED DOM output, run by
+// `babel-preset-solid` inside the island `Bun.build`'s own plugin. Solid's reactivity is a
+// COMPILE-time contract, which is why no runtime factory can stand in for the compiler here.
+
+/// <reference path="../types/babel-modules.d.ts" />
+// The reference is load-bearing, not decorative: @ultimat3/cli ships SOURCE, so an APP's
+// `tsc` compiles this file inside ITS program, where a `.d.ts` sitting in this directory is
+// not included and its `declare module` never applies. `tsc -b` proves it in this repo.
+import { transformAsync } from '@babel/core';
+import { contentHash } from '@ultimat3/render';
+import solidPreset from 'babel-preset-solid';
+import type { BunPlugin } from 'bun';
+import { IslandBuildFailedError } from './errors';
+
+/**
+ * `generate: 'dom'` because an island runs in a browser and nowhere else; `hydratable: false`
+ * because an island MOUNTS over server markup through its own `mount(el, props)` rather than
+ * resuming a Solid hydration tree — there is no `renderToString` pass on the other side of it, so
+ * hydration markers would be per-node bytes with no reader.
+ */
+const PRESET_OPTIONS = { generate: 'dom', hydratable: false } as const;
+
+/**
+ * The parser plugins, given DIRECTLY rather than through `@babel/plugin-syntax-typescript`. That
+ * plugin does nothing but push this same array, and Babel 8 deleted its `isTSX` option — so the
+ * documented spelling silently stops parsing JSX and every `<` becomes a type parameter. Given
+ * here the option surface is Babel's parser, which has never moved.
+ *
+ * Order is inert here and is NOT inert via `plugins:` — as plugin entries, the JSX one must precede
+ * the TypeScript one or `<button` parses as a type-parameter list. One more reason to say it once,
+ * here.
+ */
+const PARSER_PLUGINS = ['typescript', 'jsx'] as const;
+
+interface CacheEntry {
+  /** `contentHash` of the source the code was compiled from. */
+  readonly hash: string;
+  readonly code: string;
+}
+
+/**
+ * Keyed by PATH, not by content hash: `x dev` re-runs `buildIslands` on every change, and a map
+ * keyed by content would grow one entry per keystroke for the life of the process. One entry per
+ * island file is bounded by the island count, which is the only quantity that should bound it.
+ *
+ * It never hits inside a single `x build` — `discoverIslands` yields unique paths and `buildOne`
+ * runs once each. The dev loop is the whole reason it exists: Babel is ~8.7ms a file against
+ * `Bun.Transpiler`'s 0.07ms, so an app with twenty islands re-compiles nineteen unchanged files on
+ * every rebuild without this.
+ */
+const cache = new Map<string, CacheEntry>();
+
+/** Test seam: the cache is process-global because the dev server it serves is too. */
+export function clearIslandTransformCache(): void {
+  cache.clear();
+}
+
+/**
+ * `.tsx` source → Solid's compiled DOM expressions. Exported so the transform is testable as a
+ * function of its two inputs: the plugin below is the four lines of glue that hand it a file.
+ *
+ * The output is still TypeScript — Babel PARSES the annotations here and does not strip them,
+ * which is why the plugin declares `loader: 'ts'` and lets Bun remove them.
+ */
+export async function transformIslandTsx(source: string, path: string): Promise<string> {
+  const hash = contentHash(source);
+  const hit = cache.get(path);
+  if (hit !== undefined && hit.hash === hash) return hit.code;
+
+  // Babel installs its own `prepareStackTrace` on the first TRANSFORM — not on import, which is
+  // where this guard was first put — and leaving it installed makes `Error.captureStackTrace`
+  // strict for every unrelated module loaded later in the same process.
+  const saved = Error.prepareStackTrace;
+  let code: string | null | undefined;
+  try {
+    // `transformAsync` and never `transformFileAsync`: the latter is gated behind `@babel/core`'s
+    // `browser` export condition and throws "Transforming files is not supported in browsers"
+    // under `bun --conditions=browser`, which is the condition Solid work runs in.
+    const result = await transformAsync(source, {
+      filename: path,
+      // The app's own Babel config is not this transform's business, and an app that happens to
+      // have one must not change what its islands compile to.
+      babelrc: false,
+      configFile: false,
+      parserOpts: { plugins: [...PARSER_PLUGINS] },
+      presets: [[solidPreset, PRESET_OPTIONS]],
+    });
+    code = result?.code;
+  } finally {
+    Error.prepareStackTrace = saved;
+  }
+  // A parse error is NOT caught here: Babel's own message already names the file, the line and the
+  // column ("a.island.tsx: Unexpected token (2:23)"), and `buildOne` wraps whatever escapes in
+  // `X_BUILD_FAILED` naming the island. Re-wrapping it here would only bury that.
+  if (code == null) {
+    throw new IslandBuildFailedError({
+      file: path,
+      logs: 'the Solid JSX transform emitted no code',
+    });
+  }
+  cache.set(path, { hash, code });
+  return code;
+}
+
+/**
+ * The plugin `island-bundle.ts` hands `Bun.build`. It carries no state of its own, so one frozen
+ * descriptor serves every concurrent island build — `Bun.build` calls `setup` once per build with
+ * that build's own builder.
+ *
+ * `.tsx`, NOT `.island.tsx`. The narrow filter looks like axiom 6 and is the opposite of it: an
+ * island that imports a plain `.tsx` component — the most ordinary thing an author does, and what
+ * `x g resource` generates — would have that component compiled by nobody, and the app's
+ * `jsx: "preserve"` tsconfig turns it straight back into `React.createElement("span", …)` and
+ * `React is not defined`. Axiom 6 is already satisfied by GRAPH SEPARATION: this plugin runs
+ * inside the island build, whose graph only ever holds islands and what they import, and a page
+ * names its island by SPECIFIER and never imports one. So `.tsx` here already means exactly the
+ * set that ships to a browser — the filter never had to do that work.
+ */
+export const solidJsxPlugin: BunPlugin = {
+  name: 'ultimate-island-solid',
+  setup(build): void {
+    build.onLoad({ filter: /\.tsx$/ }, async ({ path }) => ({
+      contents: await transformIslandTsx(await Bun.file(path).text(), path),
+      loader: 'ts',
+    }));
+  },
+};
diff --git a/packages/cli/types/babel-modules.d.ts b/packages/cli/types/babel-modules.d.ts
new file mode 100644
index 00000000..8fb9ab8e
--- /dev/null
+++ b/packages/cli/types/babel-modules.d.ts
@@ -0,0 +1,31 @@
+// Types for the two Babel packages the island JSX transform calls. Neither ships declarations and
+// no `@types/babel-preset-solid` exists — and `@ultimat3/cli` ships SOURCE, so an APP typechecks
+// `solid-loader.ts` and a `@types/*` devDependency here would never reach it. Only the surface
+// actually called is declared: a fuller copy of Babel's types is a second one to keep in step.
+
+declare module '@babel/core' {
+  export interface BabelTransformOptions {
+    readonly filename?: string;
+    readonly babelrc?: boolean;
+    readonly configFile?: boolean;
+    readonly parserOpts?: { readonly plugins?: readonly string[] };
+    /** `[preset, options]` pairs. The preset itself is opaque here — it is never called. */
+    readonly presets?: readonly (readonly [unknown, unknown])[];
+  }
+  export interface BabelFileResult {
+    readonly code?: string | null;
+  }
+  export function transformAsync(
+    source: string,
+    options: BabelTransformOptions,
+  ): Promise<BabelFileResult | null>;
+}
+
+declare module 'babel-preset-solid' {
+  /** A Babel preset factory, handed straight to `presets:` and never invoked by this package. */
+  const preset: unknown;
+  // `export =`, not `export default`: the package really is CommonJS whose `module.exports` IS the
+  // factory, and that is what `esModuleInterop` gives the default import. It also keeps this file
+  // clear of `noDefaultExport`, which `biome.json` waives for `scss.d.ts` alone.
+  export = preset;
+}