Add stylelint config and harden feed reader fallback

Author: gildesmarais

.codex/skills/finish-review

@@ -0,0 +1 @@
+/Users/gil/.dotfiles/skills/finish-review

.codex/skills/gh-review-resolve

@@ -0,0 +1 @@
+/Users/gil/.dotfiles/skills/gh-review-resolve

.codex/skills/pr-slicer

@@ -0,0 +1 @@
+/Users/gil/.dotfiles/skills/pr-slicer

.codex/skills/review-tests

@@ -0,0 +1 @@
+/Users/gil/.dotfiles/skills/review-tests

.codex/skills/ruby-dev

@@ -0,0 +1 @@
+/Users/gil/.dotfiles/skills/ruby-dev

.github/workflows/ci.yml

@@ -92,6 +92,9 @@ jobs:
       - name: Typecheck frontend
         run: npm run typecheck
 
+      - name: Lint CSS with Stylelint
+        run: pnpm dlx stylelint "**/*.css" || npx stylelint "**/*.css"
+
       - name: Check formatting
         run: npm run format:check
 

Makefile

@@ -67,11 +67,13 @@ lint-ruby: ## Run Ruby linter (RuboCop) - errors when issues found
 	bundle exec rake yard:verify_public_docs
 	@echo "Ruby linting complete!"
 
-lint-js: ## Run JavaScript/Frontend linting (TypeScript + ESLint + Prettier) - errors when issues found
+lint-js: ## Run JavaScript/Frontend linting (TypeScript + ESLint + Stylelint + Prettier) - errors when issues found
 	@echo "Running TypeScript typecheck..."
 	@cd frontend && npm run typecheck
 	@echo "Running ESLint..."
 	@cd frontend && npm run lint
+	@echo "Running Stylelint..."
+	@cd frontend && (pnpm dlx stylelint "**/*.css" || npx stylelint "**/*.css")
 	@echo "Running Prettier format check..."
 	@cd frontend && npm run format:check
 	@echo "JavaScript linting complete!"

frontend/package.json

@@ -41,8 +41,10 @@
     "jsdom": "^27.0.0",
     "msw": "^2.11.3",
     "prettier": "^3.x.x",
-    "typescript-eslint": "^8.44.1",
+    "stylelint": "^17.6.0",
+    "stylelint-config-standard": "^40.0.0",
     "typescript": "^5.9.3",
+    "typescript-eslint": "^8.44.1",
     "vite": "^6.3.6",
     "vitest": "^3.2.4"
   }