docs: add CLAUDE.md for codebase guidance

chore(deps): bump ESLint, Tailwind CSS, and related dependencies

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: z0ffy

CLAUDE.md

@@ -0,0 +1,49 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+Personal blog site using GitHub Issues as the content source. Built on the [Gossip](https://github.com/qianxi0410/gossip) architecture. Issues tagged with `published` label are rendered as blog posts.
+
+**Stack**: Next.js 16 (React 19) + TypeScript + Tailwind CSS 4 + Octokit (GitHub API)
+
+## Commands
+
+```bash
+pnpm dev          # Development server (localhost:3000)
+pnpm build        # Static export to out/
+pnpm start        # Preview production build
+pnpm lint         # ESLint check
+pnpm fix          # ESLint with auto-fix
+```
+
+## Environment Variables
+
+Create `.env.local` with:
+- `OWNER` - GitHub username (required)
+- `REPO` - Repository name (required)
+- `ACCESS_TOKEN` - GitHub PAT with repo scope (required)
+- `GOOGLE_ANALYTICS_ID` - GA tracking ID (optional)
+- `DEPLOY_TARGET` - Set to `gh-pages` for GitHub Pages deployment
+
+## Architecture
+
+**Data Flow**: GitHub Issues → Octokit API → `lib/post.ts` → Static pages at build time
+
+**Key Directories**:
+- `pages/` - Next.js pages router with dynamic routes for posts (`[id].tsx`) and tags (`tag/[id].tsx`)
+- `lib/` - Core data fetching logic
+  - `cli.ts` - Octokit client initialization
+  - `post.ts` - Fetch posts, tags, and paths from GitHub Issues API
+- `components/` - React components (markdown renderer, header, footer, comments, theme toggle)
+- `gossip.d.ts` - Type definitions for Post, User, and custom NextPageWithLayout
+
+**Configuration**: Site settings in `next.config.js` under `env`:
+- `comment` - Enable Utterances comments (`'true'`/`'false'`)
+- `theme` - Theme mode (`'light'`/`'dark'`/`'both'`)
+- `rss` - Generate RSS feed (`'true'`/`'false'`)
+- `back2top` - Show back-to-top button
+- `mail`, `twitter`, `bio` - User info display
+
+**Deployment**: Uses `output: "export"` for static site generation. For GitHub Pages with non-username.github.io repos, `basePath` is auto-configured.

package.json

@@ -24,21 +24,21 @@
     "sakana-widget": "^2.7.1"
   },
   "devDependencies": {
-    "@eslint/js": "^9.0.0",
-    "@next/eslint-plugin-next": "^16.2.2",
+    "@eslint/js": "^9.39.4",
+    "@next/eslint-plugin-next": "^16.2.4",
     "@next/third-parties": "16.2.2",
-    "@tailwindcss/postcss": "^4.2.2",
+    "@tailwindcss/postcss": "^4.2.4",
     "@types/node": "25.5.2",
     "@types/react": "19.2.14",
     "@types/react-dom": "19.2.3",
     "@types/react-syntax-highlighter": "^15.5.13",
     "@types/rss": "^0.0.32",
     "eslint": "9.39.4",
     "eslint-config-next": "16.2.2",
-    "eslint-plugin-react-hooks": "^7.0.1",
+    "eslint-plugin-react-hooks": "^7.1.1",
     "next-sitemap": "^4.2.3",
-    "postcss": "^8.5.8",
-    "tailwindcss": "^4.2.2",
+    "postcss": "^8.5.12",
+    "tailwindcss": "^4.2.4",
     "typescript": "6.0.2"
   },
   "pnpm": {