chore: standardize pnpm workflow setup

.github/actions/setup-pnpm/action.yml

@@ -0,0 +1,14 @@
+name: Set up pnpm and Node.js
+description: Install pnpm and set up Node.js with a pnpm dependency cache from package.json.
+
+runs:
+  using: composite
+  steps:
+    - name: Set up pnpm
+      uses: pnpm/action-setup@v6
+
+    - name: Set up Node.js with pnpm cache
+      uses: actions/setup-node@v4
+      with:
+        node-version-file: package.json
+        cache: pnpm

.github/workflows/deploy.yml

@@ -23,12 +23,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: package.json
-      - uses: pnpm/action-setup@v4
-        with:
-          version: 10.17.1
+      - name: Set up pnpm and Node.js
+        uses: ./.github/actions/setup-pnpm
       - name: Install dependencies
         run: pnpm install --frozen-lockfile
       - id: pages

.github/workflows/lint.yml

@@ -10,8 +10,11 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Setup pnpm Environment
-        uses: concertypin/action/pnpm-install@master
+      - name: Set up pnpm and Node.js
+        uses: ./.github/actions/setup-pnpm
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
 
       - name: Buildable test
         run: pnpm build

.github/workflows/test.yml

@@ -18,8 +18,11 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Setup pnpm Environment
-        uses: concertypin/action/pnpm-install@master
+      - name: Set up pnpm and Node.js
+        uses: ./.github/actions/setup-pnpm
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
 
       - name: Run tests
         run: pnpm run test --reporter=blob --coverage.enabled --shard=${{ matrix.shardIndex }}/${{ matrix.shardTotal }}
@@ -44,8 +47,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - name: Setup pnpm Environment
-        uses: concertypin/action/pnpm-install@master
+      - name: Set up pnpm and Node.js
+        uses: ./.github/actions/setup-pnpm
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
 
       - name: Download blob reports from GitHub Actions Artifacts
         uses: actions/download-artifact@v4

README.md

@@ -23,7 +23,7 @@ Then install the dependencies:
 pnpm install
 ```
 
-`postinstall` registers the git hooks (via `simple-git-hooks`), so run `pnpm install` before your first commit. The pre-commit hook runs the non-mutating `check` script (formatting, lint, and tests); when it fails, apply fixes with `pnpm format` and `pnpm lint`.
+`postinstall` registers the git hooks (via `simple-git-hooks`), so run `pnpm install` before your first commit. The pre-commit hook runs `pnpm check`, which formats the project, applies lint fixes, and then runs the tests.
 
 ## Conventions and Rules
 
@@ -40,11 +40,12 @@ This project follows specific conventions and rules for code style, data validat
 Deploy the `dist/` output over HTTP(S). The included deploy workflow
 (`.github/workflows/deploy.yml`) builds with the GitHub Pages base path and
 publishes the result as a GitHub Pages site. A plain `pnpm build` emits
-root-absolute asset URLs (`base: "/"`), so that output serves correctly from a
-domain root — a GitHub Pages user site or a custom domain — or via
-`pnpm preview`. For a GitHub Pages project site under a subpath
-(`https://<user>.github.io/<repo>/`), rebuild with a matching base, e.g.
-`pnpm build --base "/<repo>/"`, before deploying `dist/`.
+relative asset URLs, so that output serves correctly from a domain root, a
+GitHub Pages project site subpath (`https://<user>.github.io/<repo>/`), or via
+`pnpm preview`. For History API routing below the domain root, rebuild with the
+site's absolute base path, e.g. `pnpm build --base "/<repo>/"`, before
+deploying `dist/`, so the router links and the `404.html` fallback shell
+resolve against the real mount path.
 
 This template uses clean `BrowserRouter` URLs. GitHub Pages serves the
 SPA-bearing `404.html` for a refresh or direct visit to a client route, so React

oxlint.config.ts

@@ -1,7 +1,6 @@
 import { defineConfig } from "oxlint";
 import frontendConfig from "@concertypin/config/oxlint/frontend";
 import reactConfig from "./scripts/linter/oxlint-react.ts";
-import scriptsConfig from "@concertypin/config/oxlint/scripts";
 
 export default defineConfig({
     $schema: "./node_modules/oxlint/configuration_schema.json",
@@ -24,5 +23,5 @@ export default defineConfig({
         typeAware: true,
         typeCheck: true,
     },
-    extends: [frontendConfig, reactConfig, scriptsConfig],
+    extends: [frontendConfig, reactConfig],
 });

package.json

@@ -17,7 +17,7 @@
         "lint:check": "oxlint .",
         "postinstall": "pnpm exec simple-git-hooks",
         "preview": "vite preview",
-        "check": "pnpm run format:check && pnpm run lint:check && pnpm run test",
+        "check": "pnpm run format && pnpm run lint && pnpm run test",
         "test": "vitest run"
     },
     "engines": {
@@ -29,7 +29,7 @@
         "react-router-dom": "^7.18.1"
     },
     "devDependencies": {
-        "@concertypin/config": "^0.1.2",
+        "@concertypin/config": "^0.2.0",
         "@tailwindcss/postcss": "^4.3.2",
         "@testing-library/dom": "^10.4.1",
         "@testing-library/jest-dom": "^6.9.1",

vite.config.ts

@@ -50,7 +50,7 @@ const testConfig: Config["test"] = {
 };
 
 export default defineConfig({
-    base: "/",
+    base: "./",
     build: {
         outDir: "dist",
         rolldownOptions: {