diff --git a/apps/web/css.d.ts b/apps/web/css.d.ts
new file mode 100644
index 0000000..4e62a42
--- /dev/null
+++ b/apps/web/css.d.ts
@@ -0,0 +1,4 @@
+// TS 6 (TS2882) checks side-effect imports like `import './globals.css'`,
+// which Next's bundled types do not declare. Declare plain CSS modules so
+// the type checker accepts what the bundler already handles.
+declare module "*.css";
diff --git a/apps/web/package.json b/apps/web/package.json
index aa6848d..b4f5664 100644
--- a/apps/web/package.json
+++ b/apps/web/package.json
@@ -73,7 +73,7 @@
     "eslint-config-next": "14.2.35",
     "postcss": "^8.4.35",
     "tailwindcss": "^3.4.1",
-    "typescript": "^5.3.3",
+    "typescript": "^6.0.3",
     "vitest": "^3.0.0"
   }
 }
diff --git a/apps/web/tsconfig.json b/apps/web/tsconfig.json
index 0a2b888..1c3b099 100644
--- a/apps/web/tsconfig.json
+++ b/apps/web/tsconfig.json
@@ -14,7 +14,6 @@
     "jsx": "preserve",
     "incremental": true,
     "plugins": [{ "name": "next" }],
-    "baseUrl": ".",
     "paths": {
       "@/*": ["./*"],
       "@kivvi/core": ["../../packages/core/src"],
diff --git a/package.json b/package.json
index 70c2038..8d24489 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
     "prettier": "3.9.6",
     "tsx": "^4.21.0",
     "turbo": "^2.0.0",
-    "typescript": "^5.3.3"
+    "typescript": "^6.0.3"
   },
   "packageManager": "pnpm@9.0.0",
   "engines": {
diff --git a/packages/ai/package.json b/packages/ai/package.json
index 53b56c9..1f2154b 100644
--- a/packages/ai/package.json
+++ b/packages/ai/package.json
@@ -20,7 +20,7 @@
     "zod": "^3.22.4"
   },
   "devDependencies": {
-    "typescript": "^5.3.3",
+    "typescript": "^6.0.3",
     "vitest": "^3.0.0"
   }
 }
diff --git a/packages/ai/tsconfig.json b/packages/ai/tsconfig.json
index ed55cf6..a468a98 100644
--- a/packages/ai/tsconfig.json
+++ b/packages/ai/tsconfig.json
@@ -9,6 +9,7 @@
     "declaration": true,
     "declarationMap": true,
     "outDir": "./dist",
+    "rootDir": "../..",
     "paths": {
       "@kivvi/core": ["../core/src"],
       "@kivvi/core/*": ["../core/*"],
diff --git a/packages/core/package.json b/packages/core/package.json
index d1e91ac..ed9727d 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -17,7 +17,7 @@
     "zod": "^3.22.4"
   },
   "devDependencies": {
-    "typescript": "^5.3.3",
+    "typescript": "^6.0.3",
     "vitest": "^3.0.0"
   }
 }
diff --git a/packages/core/tsconfig.json b/packages/core/tsconfig.json
index 5f78888..7b3e584 100644
--- a/packages/core/tsconfig.json
+++ b/packages/core/tsconfig.json
@@ -1,7 +1,8 @@
 {
   "extends": "../../tsconfig.json",
   "compilerOptions": {
-    "outDir": "./dist"
+    "outDir": "./dist",
+    "rootDir": "../.."
   },
   "include": ["src/**/*"]
 }
diff --git a/packages/database/package.json b/packages/database/package.json
index 57ced01..1cb28c2 100644
--- a/packages/database/package.json
+++ b/packages/database/package.json
@@ -21,7 +21,7 @@
     "@types/node-fetch": "2",
     "@types/ws": "^8.18.1",
     "drizzle-kit": "^0.20.0",
-    "typescript": "^5.3.3",
+    "typescript": "^6.0.3",
     "ws": "^8.19.0"
   }
 }
diff --git a/packages/database/tsconfig.json b/packages/database/tsconfig.json
index ca0847f..ff865a7 100644
--- a/packages/database/tsconfig.json
+++ b/packages/database/tsconfig.json
@@ -8,7 +8,8 @@
     "skipLibCheck": true,
     "declaration": true,
     "declarationMap": true,
-    "outDir": "./dist"
+    "outDir": "./dist",
+    "rootDir": "../.."
   },
   "include": ["src/**/*"],
   "exclude": ["node_modules", "dist"]
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 90b4bff..6062d28 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -19,7 +19,7 @@ importers:
         version: 3.7.0(@types/react@18.3.27)(react-dom@18.3.1(react@18.3.1))(react-is@16.13.1)(react@18.3.1)(redux@5.0.1)
       swissqrbill:
         specifier: ^4.2.1
-        version: 4.2.1(pdfkit@0.17.2)(typescript@5.9.3)
+        version: 4.2.1(pdfkit@0.17.2)(typescript@6.0.3)
     devDependencies:
       '@types/node':
         specifier: ^26.4.0
@@ -40,8 +40,8 @@ importers:
         specifier: ^2.0.0
         version: 2.7.5
       typescript:
-        specifier: ^5.3.3
-        version: 5.9.3
+        specifier: ^6.0.3
+        version: 6.0.3
 
   apps/web:
     dependencies:
@@ -137,7 +137,7 @@ importers:
         version: 5.0.0-beta.30(next@14.2.35(@babel/core@7.29.0)(@opentelemetry/api@1.9.0)(@playwright/test@1.58.2)(react-dom@18.3.1(react@18.3.1))(react@18.3.1))(nodemailer@8.0.1)(react@18.3.1)
       next-intl:
         specifier: ^4.8.2
-        version: 4.8.2(@swc/helpers@0.5.18)(next@14.2.35(@babel/core@7.29.0)(@opentelemetry/api@1.9.0)(@playwright/test@1.58.2)(react-dom@18.3.1(react@18.3.1))(react@18.3.1))(react@18.3.1)(typescript@5.9.3)
+        version: 4.8.2(next@14.2.35(@babel/core@7.29.0)(@opentelemetry/api@1.9.0)(@playwright/test@1.58.2)(react-dom@18.3.1(react@18.3.1))(react@18.3.1))(react@18.3.1)(typescript@6.0.3)
       next-themes:
         specifier: ^0.3.0
         version: 0.3.0(react-dom@18.3.1(react@18.3.1))(react@18.3.1)
@@ -213,7 +213,7 @@ importers:
         version: 8.57.1
       eslint-config-next:
         specifier: 14.2.35
-        version: 14.2.35(eslint@8.57.1)(typescript@5.9.3)
+        version: 14.2.35(eslint@8.57.1)(typescript@6.0.3)
       postcss:
         specifier: ^8.4.35
         version: 8.5.6
@@ -221,8 +221,8 @@ importers:
         specifier: ^3.4.1
         version: 3.4.19(tsx@4.21.0)(yaml@2.8.2)
       typescript:
-        specifier: ^5.3.3
-        version: 5.9.3
+        specifier: ^6.0.3
+        version: 6.0.3
       vitest:
         specifier: ^3.0.0
         version: 3.2.4(@types/debug@4.1.12)(@types/node@20.19.30)(jiti@1.21.7)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.2)
@@ -249,17 +249,17 @@ importers:
         version: 0.30.10(@neondatabase/serverless@0.9.5)(@opentelemetry/api@1.9.0)(@types/pg@8.11.6)(@types/react@18.3.27)(postgres@3.4.8)(react@18.3.1)
       openai:
         specifier: ^4.28.0
-        version: 4.104.0(ws@8.19.0)(zod@3.25.76)
+        version: 4.104.0(zod@3.25.76)
       zod:
         specifier: ^3.22.4
         version: 3.25.76
     devDependencies:
       typescript:
-        specifier: ^5.3.3
-        version: 5.9.3
+        specifier: ^6.0.3
+        version: 6.0.3
       vitest:
         specifier: ^3.0.0
-        version: 3.2.4(@types/debug@4.1.12)(@types/node@20.19.30)(jiti@1.21.7)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.2)
+        version: 3.2.4(@types/debug@4.1.12)(@types/node@26.4.0)(jiti@1.21.7)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.2)
 
   packages/core:
     dependencies:
@@ -280,11 +280,11 @@ importers:
         version: 3.25.76
     devDependencies:
       typescript:
-        specifier: ^5.3.3
-        version: 5.9.3
+        specifier: ^6.0.3
+        version: 6.0.3
       vitest:
         specifier: ^3.0.0
-        version: 3.2.4(@types/debug@4.1.12)(@types/node@20.19.30)(jiti@1.21.7)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.2)
+        version: 3.2.4(@types/debug@4.1.12)(@types/node@26.4.0)(jiti@1.21.7)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.2)
 
   packages/database:
     dependencies:
@@ -311,8 +311,8 @@ importers:
         specifier: ^0.20.0
         version: 0.20.18
       typescript:
-        specifier: ^5.3.3
-        version: 5.9.3
+        specifier: ^6.0.3
+        version: 6.0.3
       ws:
         specifier: ^8.19.0
         version: 8.19.0
@@ -5424,8 +5424,8 @@ packages:
     resolution: {integrity: sha512-3KS2b+kL7fsuk/eJZ7EQdnEmQoaho/r6KUef7hxvltNA5DR8NAUM+8wJMbJyZ4G9/7i3v5zPBIMN5aybAh2/Jg==}
     engines: {node: '>= 0.4'}
 
-  typescript@5.9.3:
-    resolution: {integrity: sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==}
+  typescript@6.0.3:
+    resolution: {integrity: sha512-y2TvuxSZPDyQakkFRPZHKFm+KKVqIisdg9/CZwm9ftvKXLP8NRWj38/ODjNbr43SsoXqNuAisEf1GdCxqWcdBw==}
     engines: {node: '>=14.17'}
     hasBin: true
 
@@ -7461,7 +7461,7 @@ snapshots:
   '@swc/core-win32-x64-msvc@1.15.11':
     optional: true
 
-  '@swc/core@1.15.11(@swc/helpers@0.5.18)':
+  '@swc/core@1.15.11':
     dependencies:
       '@swc/counter': 0.1.3
       '@swc/types': 0.1.25
@@ -7476,7 +7476,6 @@ snapshots:
       '@swc/core-win32-arm64-msvc': 1.15.11
       '@swc/core-win32-ia32-msvc': 1.15.11
       '@swc/core-win32-x64-msvc': 1.15.11
-      '@swc/helpers': 0.5.18
 
   '@swc/counter@0.1.3': {}
 
@@ -7649,41 +7648,41 @@ snapshots:
     dependencies:
       '@types/node': 20.19.30
 
-  '@typescript-eslint/eslint-plugin@8.56.0(@typescript-eslint/parser@7.2.0(eslint@8.57.1)(typescript@5.9.3))(eslint@8.57.1)(typescript@5.9.3)':
+  '@typescript-eslint/eslint-plugin@8.56.0(@typescript-eslint/parser@7.2.0(eslint@8.57.1)(typescript@6.0.3))(eslint@8.57.1)(typescript@6.0.3)':
     dependencies:
       '@eslint-community/regexpp': 4.12.2
-      '@typescript-eslint/parser': 7.2.0(eslint@8.57.1)(typescript@5.9.3)
+      '@typescript-eslint/parser': 7.2.0(eslint@8.57.1)(typescript@6.0.3)
       '@typescript-eslint/scope-manager': 8.56.0
-      '@typescript-eslint/type-utils': 8.56.0(eslint@8.57.1)(typescript@5.9.3)
-      '@typescript-eslint/utils': 8.56.0(eslint@8.57.1)(typescript@5.9.3)
+      '@typescript-eslint/type-utils': 8.56.0(eslint@8.57.1)(typescript@6.0.3)
+      '@typescript-eslint/utils': 8.56.0(eslint@8.57.1)(typescript@6.0.3)
       '@typescript-eslint/visitor-keys': 8.56.0
       eslint: 8.57.1
       ignore: 7.0.5
       natural-compare: 1.4.0
-      ts-api-utils: 2.4.0(typescript@5.9.3)
-      typescript: 5.9.3
+      ts-api-utils: 2.4.0(typescript@6.0.3)
+      typescript: 6.0.3
     transitivePeerDependencies:
       - supports-color
 
-  '@typescript-eslint/parser@7.2.0(eslint@8.57.1)(typescript@5.9.3)':
+  '@typescript-eslint/parser@7.2.0(eslint@8.57.1)(typescript@6.0.3)':
     dependencies:
       '@typescript-eslint/scope-manager': 7.2.0
       '@typescript-eslint/types': 7.2.0
-      '@typescript-eslint/typescript-estree': 7.2.0(typescript@5.9.3)
+      '@typescript-eslint/typescript-estree': 7.2.0(typescript@6.0.3)
       '@typescript-eslint/visitor-keys': 7.2.0
       debug: 4.4.3
       eslint: 8.57.1
     optionalDependencies:
-      typescript: 5.9.3
+      typescript: 6.0.3
     transitivePeerDependencies:
       - supports-color
 
-  '@typescript-eslint/project-service@8.56.0(typescript@5.9.3)':
+  '@typescript-eslint/project-service@8.56.0(typescript@6.0.3)':
     dependencies:
-      '@typescript-eslint/tsconfig-utils': 8.56.0(typescript@5.9.3)
+      '@typescript-eslint/tsconfig-utils': 8.56.0(typescript@6.0.3)
       '@typescript-eslint/types': 8.56.0
       debug: 4.4.3
-      typescript: 5.9.3
+      typescript: 6.0.3
     transitivePeerDependencies:
       - supports-color
 
@@ -7697,19 +7696,19 @@ snapshots:
       '@typescript-eslint/types': 8.56.0
       '@typescript-eslint/visitor-keys': 8.56.0
 
-  '@typescript-eslint/tsconfig-utils@8.56.0(typescript@5.9.3)':
+  '@typescript-eslint/tsconfig-utils@8.56.0(typescript@6.0.3)':
     dependencies:
-      typescript: 5.9.3
+      typescript: 6.0.3
 
-  '@typescript-eslint/type-utils@8.56.0(eslint@8.57.1)(typescript@5.9.3)':
+  '@typescript-eslint/type-utils@8.56.0(eslint@8.57.1)(typescript@6.0.3)':
     dependencies:
       '@typescript-eslint/types': 8.56.0
-      '@typescript-eslint/typescript-estree': 8.56.0(typescript@5.9.3)
-      '@typescript-eslint/utils': 8.56.0(eslint@8.57.1)(typescript@5.9.3)
+      '@typescript-eslint/typescript-estree': 8.56.0(typescript@6.0.3)
+      '@typescript-eslint/utils': 8.56.0(eslint@8.57.1)(typescript@6.0.3)
       debug: 4.4.3
       eslint: 8.57.1
-      ts-api-utils: 2.4.0(typescript@5.9.3)
-      typescript: 5.9.3
+      ts-api-utils: 2.4.0(typescript@6.0.3)
+      typescript: 6.0.3
     transitivePeerDependencies:
       - supports-color
 
@@ -7717,7 +7716,7 @@ snapshots:
 
   '@typescript-eslint/types@8.56.0': {}
 
-  '@typescript-eslint/typescript-estree@7.2.0(typescript@5.9.3)':
+  '@typescript-eslint/typescript-estree@7.2.0(typescript@6.0.3)':
     dependencies:
       '@typescript-eslint/types': 7.2.0
       '@typescript-eslint/visitor-keys': 7.2.0
@@ -7726,35 +7725,35 @@ snapshots:
       is-glob: 4.0.3
       minimatch: 9.0.3
       semver: 7.7.3
-      ts-api-utils: 1.4.3(typescript@5.9.3)
+      ts-api-utils: 1.4.3(typescript@6.0.3)
     optionalDependencies:
-      typescript: 5.9.3
+      typescript: 6.0.3
     transitivePeerDependencies:
       - supports-color
 
-  '@typescript-eslint/typescript-estree@8.56.0(typescript@5.9.3)':
+  '@typescript-eslint/typescript-estree@8.56.0(typescript@6.0.3)':
     dependencies:
-      '@typescript-eslint/project-service': 8.56.0(typescript@5.9.3)
-      '@typescript-eslint/tsconfig-utils': 8.56.0(typescript@5.9.3)
+      '@typescript-eslint/project-service': 8.56.0(typescript@6.0.3)
+      '@typescript-eslint/tsconfig-utils': 8.56.0(typescript@6.0.3)
       '@typescript-eslint/types': 8.56.0
       '@typescript-eslint/visitor-keys': 8.56.0
       debug: 4.4.3
       minimatch: 9.0.5
       semver: 7.7.3
       tinyglobby: 0.2.15
-      ts-api-utils: 2.4.0(typescript@5.9.3)
-      typescript: 5.9.3
+      ts-api-utils: 2.4.0(typescript@6.0.3)
+      typescript: 6.0.3
     transitivePeerDependencies:
       - supports-color
 
-  '@typescript-eslint/utils@8.56.0(eslint@8.57.1)(typescript@5.9.3)':
+  '@typescript-eslint/utils@8.56.0(eslint@8.57.1)(typescript@6.0.3)':
     dependencies:
       '@eslint-community/eslint-utils': 4.9.1(eslint@8.57.1)
       '@typescript-eslint/scope-manager': 8.56.0
       '@typescript-eslint/types': 8.56.0
-      '@typescript-eslint/typescript-estree': 8.56.0(typescript@5.9.3)
+      '@typescript-eslint/typescript-estree': 8.56.0(typescript@6.0.3)
       eslint: 8.57.1
-      typescript: 5.9.3
+      typescript: 6.0.3
     transitivePeerDependencies:
       - supports-color
 
@@ -7845,6 +7844,14 @@ snapshots:
     optionalDependencies:
       vite: 7.3.1(@types/node@20.19.30)(jiti@1.21.7)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.2)
 
+  '@vitest/mocker@3.2.4(vite@7.3.1(@types/node@26.4.0)(jiti@1.21.7)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.2))':
+    dependencies:
+      '@vitest/spy': 3.2.4
+      estree-walker: 3.0.3
+      magic-string: 0.30.21
+    optionalDependencies:
+      vite: 7.3.1(@types/node@26.4.0)(jiti@1.21.7)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.2)
+
   '@vitest/pretty-format@3.2.4':
     dependencies:
       tinyrainbow: 2.0.0
@@ -8760,21 +8767,21 @@ snapshots:
 
   escape-string-regexp@4.0.0: {}
 
-  eslint-config-next@14.2.35(eslint@8.57.1)(typescript@5.9.3):
+  eslint-config-next@14.2.35(eslint@8.57.1)(typescript@6.0.3):
     dependencies:
       '@next/eslint-plugin-next': 14.2.35
       '@rushstack/eslint-patch': 1.15.0
-      '@typescript-eslint/eslint-plugin': 8.56.0(@typescript-eslint/parser@7.2.0(eslint@8.57.1)(typescript@5.9.3))(eslint@8.57.1)(typescript@5.9.3)
-      '@typescript-eslint/parser': 7.2.0(eslint@8.57.1)(typescript@5.9.3)
+      '@typescript-eslint/eslint-plugin': 8.56.0(@typescript-eslint/parser@7.2.0(eslint@8.57.1)(typescript@6.0.3))(eslint@8.57.1)(typescript@6.0.3)
+      '@typescript-eslint/parser': 7.2.0(eslint@8.57.1)(typescript@6.0.3)
       eslint: 8.57.1
       eslint-import-resolver-node: 0.3.9
       eslint-import-resolver-typescript: 3.10.1(eslint-plugin-import@2.32.0)(eslint@8.57.1)
-      eslint-plugin-import: 2.32.0(@typescript-eslint/parser@7.2.0(eslint@8.57.1)(typescript@5.9.3))(eslint-import-resolver-typescript@3.10.1)(eslint@8.57.1)
+      eslint-plugin-import: 2.32.0(@typescript-eslint/parser@7.2.0(eslint@8.57.1)(typescript@6.0.3))(eslint-import-resolver-typescript@3.10.1)(eslint@8.57.1)
       eslint-plugin-jsx-a11y: 6.10.2(eslint@8.57.1)
       eslint-plugin-react: 7.37.5(eslint@8.57.1)
       eslint-plugin-react-hooks: 5.0.0-canary-7118f5dd7-20230705(eslint@8.57.1)
     optionalDependencies:
-      typescript: 5.9.3
+      typescript: 6.0.3
     transitivePeerDependencies:
       - eslint-import-resolver-webpack
       - eslint-plugin-import-x
@@ -8799,22 +8806,22 @@ snapshots:
       tinyglobby: 0.2.15
       unrs-resolver: 1.11.1
     optionalDependencies:
-      eslint-plugin-import: 2.32.0(@typescript-eslint/parser@7.2.0(eslint@8.57.1)(typescript@5.9.3))(eslint-import-resolver-typescript@3.10.1)(eslint@8.57.1)
+      eslint-plugin-import: 2.32.0(@typescript-eslint/parser@7.2.0(eslint@8.57.1)(typescript@6.0.3))(eslint-import-resolver-typescript@3.10.1)(eslint@8.57.1)
     transitivePeerDependencies:
       - supports-color
 
-  eslint-module-utils@2.12.1(@typescript-eslint/parser@7.2.0(eslint@8.57.1)(typescript@5.9.3))(eslint-import-resolver-node@0.3.9)(eslint-import-resolver-typescript@3.10.1(eslint-plugin-import@2.32.0)(eslint@8.57.1))(eslint@8.57.1):
+  eslint-module-utils@2.12.1(@typescript-eslint/parser@7.2.0(eslint@8.57.1)(typescript@6.0.3))(eslint-import-resolver-node@0.3.9)(eslint-import-resolver-typescript@3.10.1(eslint-plugin-import@2.32.0)(eslint@8.57.1))(eslint@8.57.1):
     dependencies:
       debug: 3.2.7
     optionalDependencies:
-      '@typescript-eslint/parser': 7.2.0(eslint@8.57.1)(typescript@5.9.3)
+      '@typescript-eslint/parser': 7.2.0(eslint@8.57.1)(typescript@6.0.3)
       eslint: 8.57.1
       eslint-import-resolver-node: 0.3.9
       eslint-import-resolver-typescript: 3.10.1(eslint-plugin-import@2.32.0)(eslint@8.57.1)
     transitivePeerDependencies:
       - supports-color
 
-  eslint-plugin-import@2.32.0(@typescript-eslint/parser@7.2.0(eslint@8.57.1)(typescript@5.9.3))(eslint-import-resolver-typescript@3.10.1)(eslint@8.57.1):
+  eslint-plugin-import@2.32.0(@typescript-eslint/parser@7.2.0(eslint@8.57.1)(typescript@6.0.3))(eslint-import-resolver-typescript@3.10.1)(eslint@8.57.1):
     dependencies:
       '@rtsao/scc': 1.1.0
       array-includes: 3.1.9
@@ -8825,7 +8832,7 @@ snapshots:
       doctrine: 2.1.0
       eslint: 8.57.1
       eslint-import-resolver-node: 0.3.9
-      eslint-module-utils: 2.12.1(@typescript-eslint/parser@7.2.0(eslint@8.57.1)(typescript@5.9.3))(eslint-import-resolver-node@0.3.9)(eslint-import-resolver-typescript@3.10.1(eslint-plugin-import@2.32.0)(eslint@8.57.1))(eslint@8.57.1)
+      eslint-module-utils: 2.12.1(@typescript-eslint/parser@7.2.0(eslint@8.57.1)(typescript@6.0.3))(eslint-import-resolver-node@0.3.9)(eslint-import-resolver-typescript@3.10.1(eslint-plugin-import@2.32.0)(eslint@8.57.1))(eslint@8.57.1)
       hasown: 2.0.2
       is-core-module: 2.16.1
       is-glob: 4.0.3
@@ -8837,7 +8844,7 @@ snapshots:
       string.prototype.trimend: 1.0.9
       tsconfig-paths: 3.15.0
     optionalDependencies:
-      '@typescript-eslint/parser': 7.2.0(eslint@8.57.1)(typescript@5.9.3)
+      '@typescript-eslint/parser': 7.2.0(eslint@8.57.1)(typescript@6.0.3)
     transitivePeerDependencies:
       - eslint-import-resolver-typescript
       - eslint-import-resolver-webpack
@@ -9528,7 +9535,7 @@ snapshots:
 
   jest-worker@27.5.1:
     dependencies:
-      '@types/node': 20.19.30
+      '@types/node': 26.4.0
       merge-stream: 2.0.0
       supports-color: 8.1.1
 
@@ -9997,11 +10004,11 @@ snapshots:
 
   next-intl-swc-plugin-extractor@4.8.2: {}
 
-  next-intl@4.8.2(@swc/helpers@0.5.18)(next@14.2.35(@babel/core@7.29.0)(@opentelemetry/api@1.9.0)(@playwright/test@1.58.2)(react-dom@18.3.1(react@18.3.1))(react@18.3.1))(react@18.3.1)(typescript@5.9.3):
+  next-intl@4.8.2(next@14.2.35(@babel/core@7.29.0)(@opentelemetry/api@1.9.0)(@playwright/test@1.58.2)(react-dom@18.3.1(react@18.3.1))(react@18.3.1))(react@18.3.1)(typescript@6.0.3):
     dependencies:
       '@formatjs/intl-localematcher': 0.5.10
       '@parcel/watcher': 2.5.6
-      '@swc/core': 1.15.11(@swc/helpers@0.5.18)
+      '@swc/core': 1.15.11
       icu-minify: 4.8.2
       negotiator: 1.0.0
       next: 14.2.35(@babel/core@7.29.0)(@opentelemetry/api@1.9.0)(@playwright/test@1.58.2)(react-dom@18.3.1(react@18.3.1))(react@18.3.1)
@@ -10010,7 +10017,7 @@ snapshots:
       react: 18.3.1
       use-intl: 4.8.2(react@18.3.1)
     optionalDependencies:
-      typescript: 5.9.3
+      typescript: 6.0.3
     transitivePeerDependencies:
       - '@swc/helpers'
 
@@ -10118,7 +10125,7 @@ snapshots:
     dependencies:
       mimic-function: 5.0.1
 
-  openai@4.104.0(ws@8.19.0)(zod@3.25.76):
+  openai@4.104.0(zod@3.25.76):
     dependencies:
       '@types/node': 18.19.130
       '@types/node-fetch': 2.6.13
@@ -10128,7 +10135,6 @@ snapshots:
       formdata-node: 4.4.1
       node-fetch: 2.7.0
     optionalDependencies:
-      ws: 8.19.0
       zod: 3.25.76
     transitivePeerDependencies:
       - encoding
@@ -10908,12 +10914,12 @@ snapshots:
 
   svg-engine@0.3.0: {}
 
-  swissqrbill@4.2.1(pdfkit@0.17.2)(typescript@5.9.3):
+  swissqrbill@4.2.1(pdfkit@0.17.2)(typescript@6.0.3):
     dependencies:
       svg-engine: 0.3.0
     optionalDependencies:
       pdfkit: 0.17.2
-      typescript: 5.9.3
+      typescript: 6.0.3
 
   tailwind-merge@2.6.0: {}
 
@@ -11015,13 +11021,13 @@ snapshots:
 
   ts-algebra@2.0.0: {}
 
-  ts-api-utils@1.4.3(typescript@5.9.3):
+  ts-api-utils@1.4.3(typescript@6.0.3):
     dependencies:
-      typescript: 5.9.3
+      typescript: 6.0.3
 
-  ts-api-utils@2.4.0(typescript@5.9.3):
+  ts-api-utils@2.4.0(typescript@6.0.3):
     dependencies:
-      typescript: 5.9.3
+      typescript: 6.0.3
 
   ts-interface-checker@0.1.13: {}
 
@@ -11111,7 +11117,7 @@ snapshots:
       possible-typed-array-names: 1.1.0
       reflect.getprototypeof: 1.0.10
 
-  typescript@5.9.3: {}
+  typescript@6.0.3: {}
 
   unbox-primitive@1.1.0:
     dependencies:
@@ -11289,6 +11295,27 @@ snapshots:
       - tsx
       - yaml
 
+  vite-node@3.2.4(@types/node@26.4.0)(jiti@1.21.7)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.2):
+    dependencies:
+      cac: 6.7.14
+      debug: 4.4.3
+      es-module-lexer: 1.7.0
+      pathe: 2.0.3
+      vite: 7.3.1(@types/node@26.4.0)(jiti@1.21.7)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.2)
+    transitivePeerDependencies:
+      - '@types/node'
+      - jiti
+      - less
+      - lightningcss
+      - sass
+      - sass-embedded
+      - stylus
+      - sugarss
+      - supports-color
+      - terser
+      - tsx
+      - yaml
+
   vite@7.3.1(@types/node@20.19.30)(jiti@1.21.7)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.2):
     dependencies:
       esbuild: 0.27.3
@@ -11305,6 +11332,22 @@ snapshots:
       tsx: 4.21.0
       yaml: 2.8.2
 
+  vite@7.3.1(@types/node@26.4.0)(jiti@1.21.7)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.2):
+    dependencies:
+      esbuild: 0.27.3
+      fdir: 6.5.0(picomatch@4.0.3)
+      picomatch: 4.0.3
+      postcss: 8.5.6
+      rollup: 4.57.1
+      tinyglobby: 0.2.15
+    optionalDependencies:
+      '@types/node': 26.4.0
+      fsevents: 2.3.3
+      jiti: 1.21.7
+      terser: 5.46.0
+      tsx: 4.21.0
+      yaml: 2.8.2
+
   vitest@3.2.4(@types/debug@4.1.12)(@types/node@20.19.30)(jiti@1.21.7)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.2):
     dependencies:
       '@types/chai': 5.2.3
@@ -11347,6 +11390,48 @@ snapshots:
       - tsx
       - yaml
 
+  vitest@3.2.4(@types/debug@4.1.12)(@types/node@26.4.0)(jiti@1.21.7)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.2):
+    dependencies:
+      '@types/chai': 5.2.3
+      '@vitest/expect': 3.2.4
+      '@vitest/mocker': 3.2.4(vite@7.3.1(@types/node@26.4.0)(jiti@1.21.7)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.2))
+      '@vitest/pretty-format': 3.2.4
+      '@vitest/runner': 3.2.4
+      '@vitest/snapshot': 3.2.4
+      '@vitest/spy': 3.2.4
+      '@vitest/utils': 3.2.4
+      chai: 5.3.3
+      debug: 4.4.3
+      expect-type: 1.3.0
+      magic-string: 0.30.21
+      pathe: 2.0.3
+      picomatch: 4.0.3
+      std-env: 3.10.0
+      tinybench: 2.9.0
+      tinyexec: 0.3.2
+      tinyglobby: 0.2.15
+      tinypool: 1.1.1
+      tinyrainbow: 2.0.0
+      vite: 7.3.1(@types/node@26.4.0)(jiti@1.21.7)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.2)
+      vite-node: 3.2.4(@types/node@26.4.0)(jiti@1.21.7)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.2)
+      why-is-node-running: 2.3.0
+    optionalDependencies:
+      '@types/debug': 4.1.12
+      '@types/node': 26.4.0
+    transitivePeerDependencies:
+      - jiti
+      - less
+      - lightningcss
+      - msw
+      - sass
+      - sass-embedded
+      - stylus
+      - sugarss
+      - supports-color
+      - terser
+      - tsx
+      - yaml
+
   watchpack@2.5.1:
     dependencies:
       glob-to-regexp: 0.4.1
diff --git a/tsconfig.json b/tsconfig.json
index d26660d..b9bf3f2 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -13,11 +13,10 @@
     "isolatedModules": true,
     "jsx": "preserve",
     "incremental": true,
-    "baseUrl": ".",
     "paths": {
-      "@kivvi/core": ["packages/core/src"],
-      "@kivvi/database": ["packages/database/src"],
-      "@kivvi/ai": ["packages/ai/src"]
+      "@kivvi/core": ["./packages/core/src"],
+      "@kivvi/database": ["./packages/database/src"],
+      "@kivvi/ai": ["./packages/ai/src"]
     }
   },
   "//": "Base compilerOptions consumed via `extends` by packages/core (only compilerOptions are inherited — files/include/exclude are not). This root config compiles nothing itself: `files: []` + `references` make it a solution-style config (empty `files` requires `references`, else TS18002), so `npx tsc --noEmit` delegates instead of sweeping apps/web (which owns the @/* alias) and the unwired scripts/. The authoritative typecheck is `pnpm type-check` (turbo, per-workspace).",