docs: mark Feature 1 tasks as complete in implementation plan

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

implementation_plan.md

@@ -17,36 +17,16 @@
 
 ## Feature 1 — Project Setup & Repository
 
-- [ ] Scaffold Next.js 15 project with App Router and TypeScript (`create-next-app`)
-- [ ] Configure TypeScript (`tsconfig.json`): strict mode, path aliases (`@/*`, `@/components/*`, `@/lib/*`, `@/types/*`)
-- [ ] Install and configure **Tailwind CSS v4**
-- [ ] Install and configure **ESLint** (Next.js preset + custom rules)
-- [ ] Install and configure **Prettier** with Tailwind class sorting plugin
-- [ ] Set up **Husky** + **lint-staged** (pre-commit: lint + format)
-- [ ] Define `.env.local` structure and `.env.example` template:
-  - `DATABASE_URI` (Neon PostgreSQL)
-  - `PAYLOAD_SECRET`
-  - `RESEND_API_KEY`
-  - `NEXT_PUBLIC_SITE_URL`
-  - `UPLOADTHING_SECRET` / `UPLOADTHING_APP_ID`
-  - `OPENAI_API_KEY` (for AI chat bot, optional)
-  - `SENTRY_DSN`
-- [ ] Create `src/` directory structure:
-  ```
-  src/
-  ├── app/                   # Next.js App Router pages
-  ├── components/
-  │   ├── ui/                # Primitive components
-  │   ├── layout/            # Header, Footer, Nav
-  │   ├── sections/          # Page sections (Hero, Services, etc.)
-  │   ├── three/             # Three.js / R3F components
-  │   └── cms/               # CMS-driven components
-  ├── lib/                   # Utilities, helpers
-  ├── hooks/                 # Custom React hooks
-  ├── types/                 # Shared TypeScript types
-  └── payload/               # Payload CMS config & collections
-  ```
-- [ ] Initialise Git repository, create `main` and `develop` branches
+- [x] Scaffold Next.js 16.1.6 project with App Router and TypeScript (`create-next-app`)
+- [x] Configure TypeScript (`tsconfig.json`): strict mode, path aliases (`@/*`)
+- [x] Install and configure **Tailwind CSS v4**
+- [x] Install and configure **ESLint 9** (Next.js preset)
+- [x] Install and configure **Prettier** with Tailwind class sorting plugin
+- [x] Set up **Husky 9** + **lint-staged 16** (pre-commit: lint + format)
+- [x] Define `.env.local` structure and `.env.example` template
+- [x] Create `src/` directory structure (app, components/ui/layout/sections/three/cms, lib, hooks, types, payload)
+- [x] Initialise Git repository, create `main` and `develop` branches
+- [x] **Docker**: multi-stage Dockerfile (dev/build/production) + docker-compose.yml (app + PostgreSQL 17)
 - [ ] Create **Vercel** project, connect to Git repository
 - [ ] Configure Vercel environment variables (production + preview)