diff --git a/docs/stories/1.1.story.md b/docs/stories/1.1.story.md
new file mode 100644
index 0000000..f6dd447
--- /dev/null
+++ b/docs/stories/1.1.story.md
@@ -0,0 +1,295 @@
+# Story 1.1: Project Setup & Infrastructure
+
+## Status
+
+Draft
+
+## Story
+
+**As a** developer,
+**I want** a fully configured TanStack Start project with Docker and GitLab CI,
+**so that** I can start development with a working local environment and deployment pipeline.
+
+## Acceptance Criteria
+
+1. TanStack Start project initialized with TypeScript strict mode
+2. Docker Compose configuration with app service and PostgreSQL 16
+3. Prisma configured and connected to PostgreSQL
+4. shadcn/ui installed with base components (Button, Input, Card, Table)
+5. ESLint + Prettier configured with recommended rules
+6. GitLab CI pipeline: build, lint, test stages
+7. Dockerfile multi-stage pour production build
+8. README avec instructions de setup local
+9. Application démarre et affiche une page d'accueil "Dofus Manager"
+
+## Tasks / Subtasks
+
+- [ ] Task 1: Initialize TanStack Start project (AC: 1)
+  - [ ] Create new TanStack Start project with `pnpm create @tanstack/start`
+  - [ ] Configure `tsconfig.json` with strict mode enabled
+  - [ ] Configure path aliases (`@/` pointing to `src/`)
+  - [ ] Verify TypeScript strict compilation works
+
+- [ ] Task 2: Setup Docker environment (AC: 2, 7)
+  - [ ] Create `docker/` directory
+  - [ ] Create `docker/Dockerfile` with multi-stage build (builder + runner)
+  - [ ] Create `docker/docker-compose.yml` with app and postgres services
+  - [ ] Create `docker/docker-compose.dev.yml` for local development (postgres only)
+  - [ ] Configure PostgreSQL 16-alpine with healthcheck
+  - [ ] Test database connectivity
+
+- [ ] Task 3: Configure Prisma ORM (AC: 3)
+  - [ ] Install Prisma dependencies (`prisma`, `@prisma/client`)
+  - [ ] Initialize Prisma with `pnpm prisma init`
+  - [ ] Configure `prisma/schema.prisma` with PostgreSQL provider
+  - [ ] Create `src/lib/server/db.ts` for Prisma client singleton
+  - [ ] Create `.env.example` with DATABASE_URL template
+  - [ ] Verify Prisma connects to database
+
+- [ ] Task 4: Install and configure shadcn/ui (AC: 4)
+  - [ ] Install Tailwind CSS 4.x
+  - [ ] Initialize shadcn/ui with `pnpm dlx shadcn@latest init`
+  - [ ] Configure `components.json` for path aliases
+  - [ ] Install base components: Button, Input, Card, Table
+  - [ ] Create `src/lib/utils.ts` with `cn` utility function
+  - [ ] Install Lucide React for icons
+
+- [ ] Task 5: Configure linting and formatting (AC: 5)
+  - [ ] Install Biome (as specified in tech stack, not ESLint+Prettier)
+  - [ ] Create `biome.json` with recommended rules
+  - [ ] Add lint and format scripts to `package.json`
+  - [ ] Verify linting works on project files
+
+- [ ] Task 6: Setup GitLab CI/CD pipeline (AC: 6)
+  - [ ] Create `.gitlab-ci.yml` with stages: test, build, deploy
+  - [ ] Configure test stage: lint, typecheck, test
+  - [ ] Configure build stage: Docker image build and push
+  - [ ] Configure deploy stages (staging/production) with manual triggers
+  - [ ] Add caching for node_modules
+
+- [ ] Task 7: Create README documentation (AC: 8)
+  - [ ] Document project overview
+  - [ ] Document prerequisites (Node 20, pnpm, Docker)
+  - [ ] Document local development setup steps
+  - [ ] Document available npm scripts
+  - [ ] Document environment variables
+
+- [ ] Task 8: Create home page (AC: 9)
+  - [ ] Create `src/routes/index.tsx` as home page
+  - [ ] Display "Dofus Manager" title
+  - [ ] Add basic layout structure
+  - [ ] Create `src/styles/globals.css` with Tailwind imports
+  - [ ] Verify application starts and renders correctly
+
+- [ ] Task 9: Final verification
+  - [ ] Run `pnpm dev` and verify app starts
+  - [ ] Run `pnpm lint` and verify no errors
+  - [ ] Run `pnpm typecheck` and verify no errors
+  - [ ] Test Docker build locally
+  - [ ] Verify PostgreSQL connection via Prisma
+
+## Dev Notes
+
+### Technology Stack [Source: architecture/3-technology-stack.md]
+
+**Frontend:**
+
+- React 19.x
+- TanStack Router 1.x (type-safe routing)
+- TanStack Query 5.x (server state)
+- Zustand 5.x (client state)
+- Tailwind CSS 4.x
+- shadcn/ui (component library)
+- Lucide React (icons)
+- React Hook Form 7.x
+- Zod 3.x (validation)
+
+**Backend:**
+
+- TanStack Start 1.x (full-stack framework)
+- Prisma 6.x (ORM)
+- Zod 3.x
+- node-cache 5.x
+- Pino 9.x (logging)
+
+**Database:** PostgreSQL 16.x
+
+**DevOps:**
+
+- Docker
+- Docker Compose
+- GitLab CI
+
+**Dev Tools:**
+
+- TypeScript (strict mode)
+- Biome (linting & formatting - NOT ESLint+Prettier as mentioned in AC)
+- Vitest (unit testing)
+- Playwright (E2E testing)
+
+### Project Structure [Source: architecture/12-project-structure.md]
+
+```
+dofus-manager/
+├── docker/
+│   ├── Dockerfile
+│   └── docker-compose.yml
+├── prisma/
+│   ├── schema.prisma
+│   └── migrations/
+├── public/
+│   └── favicon.ico
+├── src/
+│   ├── components/
+│   │   ├── ui/                    # shadcn/ui components
+│   │   ├── layout/                # Layout components
+│   │   └── shared/                # Shared components
+│   ├── lib/
+│   │   ├── utils.ts               # Utility functions (cn, etc.)
+│   │   ├── errors.ts              # Error types
+│   │   ├── client/
+│   │   │   ├── query-client.ts
+│   │   │   └── stores/
+│   │   └── server/
+│   │       ├── db.ts              # Prisma client
+│   │       ├── cache.ts
+│   │       └── logger.ts
+│   ├── routes/
+│   │   ├── __root.tsx
+│   │   └── index.tsx
+│   ├── styles/
+│   │   └── globals.css
+│   └── app.tsx
+├── tests/
+│   ├── unit/
+│   ├── integration/
+│   └── e2e/
+├── .env.example
+├── .gitignore
+├── biome.json
+├── package.json
+├── tsconfig.json
+├── app.config.ts
+└── README.md
+```
+
+### Docker Configuration [Source: architecture/14-deployment-architecture.md#docker-configuration]
+
+**Dockerfile (multi-stage):**
+
+- Build stage: node:20-alpine, pnpm, prisma generate, build
+- Production stage: node:20-alpine, non-root user (app:nodejs), port 3000
+- Entry point: `node .output/server/index.mjs`
+
+**Docker Compose:**
+
+- App service with DATABASE_URL, SESSION_SECRET
+- PostgreSQL 16-alpine with healthcheck
+- Traefik labels for reverse proxy (production)
+
+### GitLab CI/CD [Source: architecture/14-deployment-architecture.md#gitlab-cicd-pipeline]
+
+**Stages:** test, build, deploy
+
+**Test stage:**
+
+- image: node:20-alpine
+- Commands: pnpm lint, pnpm typecheck, pnpm test
+- Cache node_modules
+
+**Build stage:**
+
+- image: docker:24
+- Build and push Docker image to registry
+- Only on main/develop branches
+
+### Environment Variables [Source: architecture/13-development-workflow.md#environment-variables]
+
+```bash
+# Database
+DATABASE_URL="postgresql://postgres:postgres@localhost:5432/dofus_manager?schema=public"
+
+# App
+APP_URL="http://localhost:3000"
+NODE_ENV="development"
+
+# Session
+SESSION_SECRET="your-secret-key-min-32-chars"
+```
+
+### Coding Standards [Source: architecture/17-coding-standards.md]
+
+**Key Rules:**
+
+- Type sharing: Define types in `src/types/`, never duplicate
+- Server functions only: No direct HTTP calls (fetch, axios)
+- Named exports for components (no default exports except routes)
+- Use type imports: `import type { X } from '...'`
+
+**Naming Conventions:**
+
+- Components: PascalCase
+- Component files: kebab-case or PascalCase
+- Server functions: camelCase
+- Types/Interfaces: PascalCase
+- Constants: SCREAMING_SNAKE_CASE
+
+### Important Discrepancy Note
+
+AC #5 specifies "ESLint + Prettier" but the architecture documents (3-technology-stack.md) specify **Biome** for linting and formatting. Recommend following the architecture document and using Biome instead, as it's the project standard.
+
+## Testing
+
+### Testing Standards [Source: architecture/16-testing-strategy.md]
+
+**Test Location:**
+
+- Unit tests: `tests/unit/`
+- Integration tests: `tests/integration/`
+- E2E tests: `tests/e2e/`
+
+**Testing Frameworks:**
+
+- Vitest for unit and integration tests
+- Playwright for E2E tests
+
+**For this story (infrastructure setup):**
+
+- Minimal testing required
+- Verify Vitest configuration works
+- Verify basic test can run
+- Create placeholder test file structure
+
+**Test file naming:** `*.test.ts` for unit/integration, `*.spec.ts` for E2E
+
+## Change Log
+
+| Date       | Version | Description            | Author   |
+| ---------- | ------- | ---------------------- | -------- |
+| 2026-01-19 | 1.0     | Initial story creation | SM Agent |
+
+---
+
+## Dev Agent Record
+
+### Agent Model Used
+
+_To be filled by Dev Agent_
+
+### Debug Log References
+
+_To be filled by Dev Agent_
+
+### Completion Notes List
+
+_To be filled by Dev Agent_
+
+### File List
+
+_To be filled by Dev Agent_
+
+---
+
+## QA Results
+
+_To be filled by QA Agent_