Replace dpdm with Oxlint

Author: jbrunton96

.taskfiles/frontend.yml

@@ -261,7 +261,6 @@ tasks:
     deps: [install]
     cmds:
       - task: lint:oxlint
-      - task: lint:dpdm
       - task: lint:colors
       - task: lint:css
 
@@ -296,14 +295,6 @@ tasks:
     cmds:
       - npx oxlint --config oxlint.config.ts --max-warnings=0
 
-  lint:dpdm:
-    desc: "Run circular import linting"
-    deps: [install]
-    cmds:
-      # Globs so dpdm walks the whole tree. dpdm expands the braces itself, so this is
-      # shell-agnostic. Covers the whole editor tree, including the portal layer.
-      - npx dpdm "editor/src/**/*.{ts,tsx}" --circular --no-warning --no-tree --exit-code circular:1
-
   lint:fix:
     desc: "Auto-fix lint issues"
     deps: [install]

frontend/README.md

@@ -6,7 +6,7 @@ All frontend commands are run from the repository root using [Task](https://task
 - `task frontend:build` — production build
 - `task frontend:test` — run tests
 - `task frontend:test:watch` — run tests in watch mode
-- `task frontend:lint` — run oxlint + cycle detection
+- `task frontend:lint` — run linting
 - `task frontend:typecheck` — run TypeScript type checking
 - `task frontend:check` — run typecheck + lint + test
 - `task frontend:install` — install npm dependencies

frontend/oxlint.config.ts

@@ -107,7 +107,7 @@ const noExplicitAnyExcludes = [
 ];
 
 export default defineConfig({
-  plugins: ["typescript"],
+  plugins: ["typescript", "import"],
   categories: {
     correctness: "off",
   },
@@ -387,5 +387,14 @@ export default defineConfig({
         "typescript/no-explicit-any": "error",
       },
     },
+    {
+      // Circular-import detection across the editor app source (the import
+      // plugin resolves @app/* and the other tsconfig path aliases). Replaces
+      // the previous dpdm pass.
+      files: ["editor/src/**/*.{ts,tsx}"],
+      rules: {
+        "import/no-cycle": "error",
+      },
+    },
   ],
 });