diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index a17e0a4a..c42b0530 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -3,15 +3,14 @@
 # GitHub Dependabot configuration file
 version: 2
 updates:
-
   # Maintain dependencies for GitHub Actions
-  - package-ecosystem: "github-actions"
-    directory: "/"
+  - package-ecosystem: 'github-actions'
+    directory: '/'
     schedule:
-      interval: "daily"
+      interval: 'daily'
 
   # Maintain dependencies for JS/yarn
-  - package-ecosystem: "npm"
-    directory: "/"
+  - package-ecosystem: 'npm'
+    directory: '/'
     schedule:
-      interval: "daily"
+      interval: 'daily'
diff --git a/.github/workflows/actionlint.yml b/.github/workflows/actionlint.yml
index 6fad273a..88bed2de 100644
--- a/.github/workflows/actionlint.yml
+++ b/.github/workflows/actionlint.yml
@@ -4,12 +4,12 @@ name: Lint GitHub Actions workflows
 on:
   push:
     branches:
-      - "main"
+      - 'main'
     paths:
       - '.github/workflows/*.ya?ml'
   pull_request:
     branches:
-      - "main"
+      - 'main'
     paths:
       - '.github/workflows/*.ya?ml'
 
@@ -27,22 +27,22 @@ jobs:
   actionlint:
     runs-on: ubuntu-latest
     steps:
-      - name: "Harden Runner"
+      - name: 'Harden Runner'
         uses: step-security/harden-runner@a4aa98b93cab29d9b1101a6143fb8bce00e2eac4 # v2.7.1
         with:
           egress-policy: audit # TODO: change to 'egress-policy: block' after couple of runs
 
-      - name: "Checkout"
+      - name: 'Checkout'
         uses: actions/checkout@44c2b7a8a4ea60a981eaca3cf939b5f4305c123b # v4.1.5
         with:
           fetch-depth: 0
 
-      - name: "Download actionlint"
+      - name: 'Download actionlint'
         id: get_actionlint
         run: |
           bash <(curl https://raw.githubusercontent.com/rhysd/actionlint/2d26fef7e97b8ab345791f5ade3252da47d083e3/scripts/download-actionlint.bash)
 
-      - name: "Check workflow files"
+      - name: 'Check workflow files'
         run: |
           echo "::add-matcher::.github/workflows/matchers/actionlint.json"
           ${{ steps.get_actionlint.outputs.executable }} -color
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 77db9a27..a85e689b 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -5,14 +5,14 @@ name: Lint Markdown documents
 on:
   push:
     branches:
-      - "main"
+      - 'main'
     paths:
       - '**/*.md'
       - '.markdownlint-cli2.yaml'
       - '.github/workflows/docs.yml' # This workflow
   pull_request:
     branches:
-      - "main"
+      - 'main'
     paths:
       - '**/*.md'
       - '.markdownlint-cli2.yaml'
@@ -32,15 +32,15 @@ jobs:
   markdown-lint:
     runs-on: ubuntu-latest
     steps:
-      - name: "Harden Runner"
+      - name: 'Harden Runner'
         uses: step-security/harden-runner@a4aa98b93cab29d9b1101a6143fb8bce00e2eac4 # v2.7.1
         with:
           egress-policy: audit # TODO: change to 'egress-policy: block' after couple of runs
-      - name: "Checkout"
+      - name: 'Checkout'
         uses: actions/checkout@44c2b7a8a4ea60a981eaca3cf939b5f4305c123b # v4.1.5
         with:
           fetch-depth: 0
-      - name: "Check Markdown documents"
+      - name: 'Check Markdown documents'
         uses: DavidAnson/markdownlint-cli2-action@b4c9feab76d8025d1e83c653fa3990936df0e6c8 # v16.0.0
         with:
           globs: '**/*.md'
diff --git a/.github/workflows/nextjs.yml b/.github/workflows/nextjs.yml
index 9fcf64e6..138e313c 100644
--- a/.github/workflows/nextjs.yml
+++ b/.github/workflows/nextjs.yml
@@ -39,14 +39,6 @@ jobs:
         with:
           node-version: '20'
           cache: yarn
-      - name: Setup Pages
-        uses: actions/configure-pages@v4
-        with:
-          # Automatically inject basePath in your Next.js configuration file and disable
-          # server side image optimization (https://nextjs.org/docs/api-reference/next/image#unoptimized).
-          #
-          # You may remove this line if you want to manage the configuration yourself.
-          static_site_generator: next
       - name: Restore cache
         uses: actions/cache@v4
         with:
@@ -62,6 +54,15 @@ jobs:
         run: yarn install
       - name: Lint check
         run: yarn lint
+      - name: Format check
+        run: yarn format:check
+      - name: Setup tmate session
+        if: ${{ failure() }}
+        uses: mxschmitt/action-tmate@v3.18
+        timeout-minutes: 15
+        with:
+          detached: false
+          limit-access-to-actor: true
       - name: Build with Next.js
         run: yarn build
       - name: Upload artifact
diff --git a/.markdownlint-cli2.yaml b/.markdownlint-cli2.yaml
index 1104379c..3bd53f11 100644
--- a/.markdownlint-cli2.yaml
+++ b/.markdownlint-cli2.yaml
@@ -6,8 +6,8 @@ config:
   no-duplicate-header: false
   single-trailing-newline: false
 globs:
-  - "**/*.md"
+  - '**/*.md'
 ignores:
-  - ".tox/**"
-  - "venv/**"
-  - ".venv/**"
+  - '.tox/**'
+  - 'venv/**'
+  - '.venv/**'
diff --git a/next.config.js b/next.config.js
index 80db9f3f..107d3ca2 100644
--- a/next.config.js
+++ b/next.config.js
@@ -4,6 +4,7 @@ const path = require('path'); // eslint-disable-line @typescript-eslint/no-var-r
 
 const nextConfig = {
   output: 'export',
+  basePath: '',
   reactStrictMode: true,
 
   compiler: {