Use precious for linting in CI

This replaces the standalone golangci-lint workflow with precious,
which runs all configured linters (golangci-lint and prettier).

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: horgh

.github/workflows/lint.yml

@@ -1,4 +1,4 @@
-name: golangci-lint
+name: lint
 
 on:
   push:
@@ -9,14 +9,27 @@ on:
 permissions: {}
 
 jobs:
-  golangci:
-    name: lint
+  precious:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
         with:
           persist-credentials: false
-      - name: golangci-lint
-        uses: golangci/golangci-lint-action@1e7e51e771db61008b38414a730f564565cf7c20 # 9.2.0
+
+      - uses: actions/setup-go@v6
+        with:
+          go-version: "1.25"
+
+      - uses: actions/setup-node@v4
         with:
-          version: latest
+          node-version: "24"
+
+      - name: Install golangci-lint
+        run: go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest
+
+      - name: Install precious
+        run: |
+          curl -sL https://github.com/houseabsolute/precious/releases/latest/download/precious-Linux-x86_64.tar.gz | tar xz -C /usr/local/bin
+
+      - name: Run precious
+        run: precious lint --all