diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7429256..83d87a9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -84,4 +84,4 @@ jobs:
 
       - name: Lint viewer
         working-directory: web
-        run: npx oxlint src
+        run: npx oxlint --type-aware src
diff --git a/CLAUDE.md b/CLAUDE.md
index 4dc9b89..4c107ff 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -22,7 +22,7 @@ timeline. It is the first of three planned tools; the programme is in `docs/road
 
 - Install: `uv sync` and `cd web && npm ci`
 - Lint: `uv run ruff check src tests && uv run ruff format --check src tests`;
-  viewer `cd web && npx oxlint src`
+  viewer `cd web && npx oxlint --type-aware src`
 - Typecheck (viewer): `cd web && npx tsc -b`
 - Test: `uv run pytest -q`. Real weights (about 1.3 GB download, then cached):
   `JEPA_SCOPE_MODEL_TESTS=1 uv run pytest tests/test_real_model.py -s`
diff --git a/pyproject.toml b/pyproject.toml
index c8a2748..114d7d4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,9 @@ dev = [
 line-length = 120
 
 [tool.ruff.lint]
-select = ["E", "F", "I", "B", "UP"]
+select = ["E", "F", "I", "B", "UP", "PLE", "ASYNC", "RUF006"]
+# ASYNC rules that give advice rather than find bugs.
+ignore = ["ASYNC109", "ASYNC110", "ASYNC115", "ASYNC116"]
 
 [tool.pytest.ini_options]
 testpaths = ["tests"]
diff --git a/web/.oxlintrc.json b/web/.oxlintrc.json
index 6fa991d..c7f9d2c 100644
--- a/web/.oxlintrc.json
+++ b/web/.oxlintrc.json
@@ -3,6 +3,10 @@
   "plugins": ["react", "typescript", "oxc"],
   "rules": {
     "react/rules-of-hooks": "error",
-    "react/only-export-components": ["warn", { "allowConstantExport": true }]
+    "react/only-export-components": ["warn", { "allowConstantExport": true }],
+    "typescript/no-floating-promises": "error",
+    "typescript/no-misused-promises": "error",
+    "typescript/await-thenable": "error",
+    "typescript/switch-exhaustiveness-check": ["error", { "considerDefaultExhaustiveForUnions": true }]
   }
 }
diff --git a/web/package-lock.json b/web/package-lock.json
index 4314714..38ecbd5 100644
--- a/web/package-lock.json
+++ b/web/package-lock.json
@@ -1,11 +1,11 @@
 {
-  "name": "web",
+  "name": "jepa-scope-web",
   "version": "0.0.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "web",
+      "name": "jepa-scope-web",
       "version": "0.0.0",
       "dependencies": {
         "react": "^19.3.1",
@@ -17,6 +17,7 @@
         "@types/react-dom": "^19.3.0",
         "@vitejs/plugin-react": "^6.1.2",
         "oxlint": "^1.90.0",
+        "oxlint-tsgolint": "7.0.2006",
         "typescript": "~7.0.2",
         "vite": "^8.3.6"
       }
@@ -31,6 +32,90 @@
         "url": "https://github.com/sponsors/oxc-project"
       }
     },
+    "node_modules/@oxlint-tsgolint/darwin-arm64": {
+      "version": "7.0.2006",
+      "resolved": "https://registry.npmjs.org/@oxlint-tsgolint/darwin-arm64/-/darwin-arm64-7.0.2006.tgz",
+      "integrity": "sha512-uc0MEHXZUDW23Zmo5X28eSNeSnP17jKnh9GiehpVZqhfy99ks8spyXT5Llar3tjDN7ppnQN0Qd9FK6WNkdD+fQ==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ]
+    },
+    "node_modules/@oxlint-tsgolint/darwin-x64": {
+      "version": "7.0.2006",
+      "resolved": "https://registry.npmjs.org/@oxlint-tsgolint/darwin-x64/-/darwin-x64-7.0.2006.tgz",
+      "integrity": "sha512-+x1/pa3S3VMC9cif8XKTOCQUuqRT+wu1Ix+FK5svXa2xbXCuE7+4S0SfmuSnK/mk9AI5+xBxZFhILxmCPUZ1hA==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ]
+    },
+    "node_modules/@oxlint-tsgolint/linux-arm64": {
+      "version": "7.0.2006",
+      "resolved": "https://registry.npmjs.org/@oxlint-tsgolint/linux-arm64/-/linux-arm64-7.0.2006.tgz",
+      "integrity": "sha512-90v7HX8m54kHXn5DpjNEN18Fb7xwJMREe/wji3USyAf9pTMv7a3qZ3cPoLViIcIzxPLmkcYZIs1j1H3Z2gbVLA==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ]
+    },
+    "node_modules/@oxlint-tsgolint/linux-x64": {
+      "version": "7.0.2006",
+      "resolved": "https://registry.npmjs.org/@oxlint-tsgolint/linux-x64/-/linux-x64-7.0.2006.tgz",
+      "integrity": "sha512-/k0wsEqHiA5dWBJYuld3Vecv6bIhKCasxpho/aFkvh870Qox33MuTkKUGWIVm/njAxw7W4pu1a/Xfa3jwuKuPQ==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ]
+    },
+    "node_modules/@oxlint-tsgolint/win32-arm64": {
+      "version": "7.0.2006",
+      "resolved": "https://registry.npmjs.org/@oxlint-tsgolint/win32-arm64/-/win32-arm64-7.0.2006.tgz",
+      "integrity": "sha512-CQT5sqcLZLNZSWLzUUEjQmp74UX8h1agp3ZJ8pfRktHbx6gfBa8a7CjrnRrZ9VXlwnXVkpw7m5KBO6y+S5MQRA==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "win32"
+      ]
+    },
+    "node_modules/@oxlint-tsgolint/win32-x64": {
+      "version": "7.0.2006",
+      "resolved": "https://registry.npmjs.org/@oxlint-tsgolint/win32-x64/-/win32-x64-7.0.2006.tgz",
+      "integrity": "sha512-VZsGowXcp3vQNkjoGeVCOTf4aGrRpRk6bBJWhefnJVPr6z+dX+LKqqHfwaqnFvg66Q2iJpXqklRW38YO21ee+Q==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "win32"
+      ]
+    },
     "node_modules/@oxlint/binding-android-arm-eabi": {
       "version": "1.91.0",
       "resolved": "https://registry.npmjs.org/@oxlint/binding-android-arm-eabi/-/binding-android-arm-eabi-1.91.0.tgz",
@@ -1449,6 +1534,24 @@
         }
       }
     },
+    "node_modules/oxlint-tsgolint": {
+      "version": "7.0.2006",
+      "resolved": "https://registry.npmjs.org/oxlint-tsgolint/-/oxlint-tsgolint-7.0.2006.tgz",
+      "integrity": "sha512-5B3UtH71kycPHUC1kFEIffivEAs49SUmkJuHZOZnTY0NPj4legp0bcsCQucuLVNCoJzDucS68P2C4WIhP+LypQ==",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "tsgolint": "bin/tsgolint.js"
+      },
+      "optionalDependencies": {
+        "@oxlint-tsgolint/darwin-arm64": "7.0.2006",
+        "@oxlint-tsgolint/darwin-x64": "7.0.2006",
+        "@oxlint-tsgolint/linux-arm64": "7.0.2006",
+        "@oxlint-tsgolint/linux-x64": "7.0.2006",
+        "@oxlint-tsgolint/win32-arm64": "7.0.2006",
+        "@oxlint-tsgolint/win32-x64": "7.0.2006"
+      }
+    },
     "node_modules/picocolors": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.1.1.tgz",
diff --git a/web/package.json b/web/package.json
index bf59747..d9a5c03 100644
--- a/web/package.json
+++ b/web/package.json
@@ -6,7 +6,7 @@
   "scripts": {
     "dev": "vite",
     "build": "tsc -b && vite build",
-    "lint": "oxlint",
+    "lint": "oxlint --type-aware",
     "preview": "vite preview"
   },
   "dependencies": {
@@ -19,6 +19,7 @@
     "@types/react-dom": "^19.3.0",
     "@vitejs/plugin-react": "^6.1.2",
     "oxlint": "^1.90.0",
+    "oxlint-tsgolint": "7.0.2006",
     "typescript": "~7.0.2",
     "vite": "^8.3.6"
   }