feat: initial backend MVP (auth, habits, village, leaderboard)

.gitattributes

@@ -0,0 +1 @@
+* text=auto eol=lf

.gitignore

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+# Nuxt dev/build outputs
+.output
+.data
+.nuxt
+.nitro
+.cache
+dist
+
+# Node dependencies
+node_modules
+
+# Logs
+logs
+*.log
+
+# Misc
+.DS_Store
+.fleet
+.idea
+
+# Local env files
+.env
+.env.*
+!.env.example
+
+/app/generated/prisma
+
+prisma/dev.db

GEMINI/ARCHITECTURE.md

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+# Architecture
+
+## 1. High-Level Architecture
+
+The application follows a fullstack SPA architecture:
+
+- Nuxt 3 frontend
+- Nitro backend (Node.js)
+- REST API
+- MySQL database
+- Prisma ORM
+
+Frontend and backend live in a single repository.
+
+---
+
+## 2. Architectural Principles
+
+- Clear separation of concerns:
+  - UI
+  - State
+  - Domain logic
+  - Persistence
+- Backend is the source of truth
+- Frontend does not calculate time-based progression
+- No real-time connections (WebSockets not required)
+
+---
+
+## 3. Frontend Structure
+
+- Pages:
+  - Habits
+  - Quests
+  - Village
+  - Leaderboard
+- Components:
+  - HabitCard
+  - QuestItem
+  - VillageGrid
+  - VillageObject
+  - BuildModeOverlay
+- State:
+  - userStore
+  - habitsStore
+  - questsStore
+  - villageStore
+  - leaderboardStore
+
+---
+
+## 4. Backend Structure
+
+- API routes grouped by domain:
+  - /auth
+  - /user
+  - /habits
+  - /quests
+  - /village
+  - /leaderboard
+- Domain services:
+  - HabitService
+  - QuestService
+  - VillageService
+  - CropGrowthService
+- All time-based logic is calculated on request
+
+---
+
+## 5. Village Logic
+
+- Village grid is logical (cell-based)
+- Isometric view is purely visual
+- Build mode:
+  - shows grid overlay
+  - allows placing, moving and removing objects
+- View mode:
+  - allows planting and harvesting
+- Obstacles must be cleared before building
+
+---
+
+## 6. Time & Progression
+
+- Server calculates:
+  - whether a quest is available today
+  - whether a crop is grown
+  - streak progression
+- Time is based on user local date stored on server
+- No background jobs required for MVP
+
+---
+
+## 7. Data Flow
+
+1. Frontend requests current state
+2. Backend recalculates progression if needed
+3. Backend returns updated state
+4. Frontend updates Pinia stores
+5. UI reflects the new state
+
+---
+
+## 8. Non-Goals
+
+- No SSR optimization
+- No WebSocket connections
+- No offline mode
+- No push notifications

GEMINI/BUSINESS_REQUIREMENTS.md

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+# Business Requirements
+
+## 1. Product Goal
+
+Create a mobile-first web application for habit tracking with a light game layer.
+
+Core idea:
+Daily habits → quests → rewards → village development → EXP → leaderboard.
+
+The project is an MVP / pet project.
+No monetization, no anti-cheat, no social pressure mechanics.
+
+---
+
+## 2. Target Audience
+
+- Users who want to build daily habits
+- Users who like visual progress and game mechanics
+- Mobile users as primary platform
+
+---
+
+## 3. Core User Loop
+
+1. User opens the app
+2. Completes a habit or daily quest
+3. Receives coins
+4. Spends coins on village development
+5. Collects crops and gains EXP
+6. Sees progress and leaderboard position
+7. Returns the next day
+
+---
+
+## 4. Functional Requirements
+
+### 4.1 User & Profile
+
+- Registration and login via email + password
+- One email = one account
+- Email confirmation is NOT required (MVP)
+- Profile contains:
+  - public nickname
+  - public avatar
+  - settings:
+    - sound on/off
+    - confetti on/off
+
+---
+
+### 4.2 Habits
+
+- Maximum 3 habits per user
+- Habit fields:
+  - name (custom or predefined)
+  - active days of week
+- Habits are:
+  - permanent
+  - editable
+  - removable
+- Missed days:
+  - are not penalized
+  - shown as red cells in calendar
+- Completed days:
+  - shown as green cells
+
+---
+
+### 4.3 Quests
+
+#### Habit quests
+- Can be completed only on active days
+- Reward: 3 coins per completion
+
+#### Daily quest
+- “I visited the site today”
+- Can be completed once per day
+- Reward: 1 coin
+
+#### Streak
+- 5 consecutive daily visits → +10 coins
+- Streak resets after reward
+
+#### UX
+- Quest completion triggers:
+  - light confetti animation
+  - short success sound
+- Both effects can be disabled in settings
+
+---
+
+### 4.4 Village
+
+- 2D isometric grid
+- Grid fits into one mobile screen (no scroll)
+- Two modes:
+  - view mode
+  - build mode
+
+#### Objects
+- House (1 house = 1 worker)
+- Field
+- Road
+- Fence
+- Obstacles (rocks, bushes, mushrooms)
+
+#### Rules
+- Fields cannot exceed number of workers
+- Removing objects does NOT refund coins
+- Removing houses blocks building new fields but does not remove existing ones
+
+---
+
+### 4.5 Crops & EXP
+
+- Crop types:
+  - Blueberries
+  - Corn (grows longer)
+- Growth:
+  - real-time based
+  - no acceleration mechanics
+- Harvest:
+  - manual
+  - does not expire
+- Rewards:
+  - harvesting gives EXP
+  - corn additionally gives +1 coin
+
+---
+
+### 4.6 Leaderboard
+
+- Global leaderboard
+- Period: monthly
+- Sorted by EXP
+- Shows:
+  - rank
+  - avatar
+  - nickname
+  - EXP
+- Equal EXP results in shared ranks
+  (e.g. 1, 2, 2, 2, 3, 4, 5, 5)
+
+---
+
+## 5. MVP Exclusions
+
+The MVP explicitly excludes:
+- donations or payments
+- levels
+- progress acceleration
+- social features
+- chat
+- push notifications
+- anti-cheat
+- email verification

GEMINI/TECH_STACK.md

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+# Technical Stack
+
+## 1. General Approach
+
+- Monorepo
+- Single codebase for frontend and backend
+- SPA (no SEO requirements)
+- Mobile-first
+- Backend used as API and calculation layer
+
+---
+
+## 2. Frontend
+
+- Nuxt 3
+- Vue 3
+- TypeScript
+- Pinia (state management)
+- Vite (build tool)
+- CSS or Tailwind CSS (implementation choice)
+
+---
+
+## 3. Backend
+
+- Node.js via Nuxt Nitro
+- REST API (no GraphQL)
+- Server-side calculation for:
+  - crop growth
+  - quest availability
+  - streaks
+  - rewards
+
+---
+
+## 4. Database
+
+- SQLite
+- Prisma ORM
+- Migrations required
+- Seed data required (initial crops, obstacles, presets)
+
+---
+
+## 5. State Management
+
+- Pinia as a single source of truth on frontend
+- Server is authoritative for:
+  - time-based logic
+  - rewards
+  - progression
+
+---
+
+## 6. Internationalization
+
+- i18n support enabled from start
+- Default language: RU
+- EN prepared for future use
+
+---
+
+## 7. Testing
+
+- Unit tests are NOT required for MVP

README.md

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+# Smurf Habits
+
+Habit tracker with a light game layer (village, quests, EXP).
+Mobile-first web application.
+
+---
+
+## 1. Tech Stack
+
+- Node.js **20 LTS** (required)
+- Nuxt **4.x**
+- Vue 3
+- Prisma **6.x** (⚠️ NOT 7)
+- SQLite (development & MVP)
+- TypeScript
+
+---
+
+## 2. Environment Requirements
+
+### Node.js
+
+**Required:**
+```
+Node >= 20.x (LTS)
+```
+
+❌ Node 22 / 24 are NOT supported  
+❌ Do not use experimental Node versions
+
+Check:
+```bash
+node -v
+```
+
+---
+
+## 3. Project Structure
+
+```text
+/
+├─ app/              # UI (pages, components, layouts)
+├─ server/           # Backend (API, utils, Prisma)
+│  ├─ api/
+│  └─ utils/
+├─ prisma/
+│  ├─ schema.prisma
+│  └─ migrations/
+├─ public/
+├─ .env
+├─ nuxt.config.ts
+└─ README.md
+```
+
+### Important rules
+
+- `app/` — UI only
+- `server/` — backend only
+- `server/` MUST be in project root (not inside `app/`)
+- Do NOT change this structure
+
+---
+
+## 4. Prisma Setup (IMPORTANT)
+
+### Prisma version
+
+This project **intentionally uses Prisma 6**.
+
+❌ Do NOT upgrade to Prisma 7  
+❌ Do NOT use Prisma adapters  
+❌ Do NOT remove `DATABASE_URL`
+
+Reason:
+- Prisma 7 has unstable adapter-based API
+- Prisma 6 is stable and well-supported by Nuxt and tooling
+
+---
+
+### Prisma schema
+
+`prisma/schema.prisma` uses classic datasource config:
+
+```prisma
+datasource db {
+  provider = "sqlite"
+  url      = env("DATABASE_URL")
+}
+```
+
+---
+
+### Environment variables
+
+`.env`:
+
+```env
+DATABASE_URL="file:./dev.db"
+```
+
+---
+
+### Prisma workflow
+
+Whenever you change `schema.prisma`:
+
+```bash
+npx prisma migrate dev
+```
+
+Never forget migrations.
+
+---
+
+## 5. Prisma Client Usage
+
+Prisma client is initialized here:
+
+```ts
+server/utils/prisma.ts
+```
+
+```ts
+import { PrismaClient } from '@prisma/client'
+
+const prisma = new PrismaClient()
+
+export default prisma
+```
+
+### Rules
+
+- Do NOT initialize PrismaClient elsewhere
+- Do NOT use dynamic imports
+- Do NOT change this file without a good reason
+
+---
+
+## 6. Development
+
+Install dependencies:
+
+```bash
+npm install
+```
+
+Generate Prisma client:
+
+```bash
+npx prisma generate
+```
+
+Run dev server:
+
+```bash
+npm run dev
+```
+
+---
+
+## 7. API Example
+
+Health check:
+
+```
+GET /api/health
+```
+
+Expected response:
+
+```json
+{
+  "ok": true,
+  "usersCount": 0
+}
+```
+
+---
+
+## 8. Deployment Notes
+
+- Use Node 20 on hosting
+- Run Prisma migrations during deployment
+- SQLite is acceptable for MVP
+- Database file: `dev.db`
+
+---
+
+## 9. AI / Gemini Rules (IMPORTANT)
+
+When using Gemini / AI tools:
+
+**DO NOT ALLOW:**
+- changing Node version
+- upgrading Prisma
+- changing Prisma configuration
+- modifying project structure
+
+**ALLOWED:**
+- adding models to `schema.prisma`
+- generating API endpoints
+- implementing business logic
+
+---
+
+## 10. Why these constraints exist
+
+This setup was intentionally chosen to:
+- avoid unstable Prisma 7 API
+- keep development predictable
+- ensure compatibility with Nuxt and Node
+- prevent tooling-related regressions
+
+Breaking these rules will likely break the project.

app/app.vue

@@ -0,0 +1,6 @@
+<template>
+  <div>
+    <NuxtRouteAnnouncer />
+    <NuxtWelcome />
+  </div>
+</template>

nuxt.config.ts

@@ -0,0 +1,5 @@
+// https://nuxt.com/docs/api/configuration/nuxt-config
+export default defineNuxtConfig({
+  compatibilityDate: '2025-07-15',
+  devtools: { enabled: true }
+})

package.json

@@ -0,0 +1,19 @@
+{
+  "name": "smurfhabits",
+  "type": "module",
+  "private": true,
+  "scripts": {
+    "build": "nuxt build",
+    "dev": "nuxt dev",
+    "generate": "nuxt generate",
+    "preview": "nuxt preview",
+    "postinstall": "nuxt prepare"
+  },
+  "dependencies": {
+    "@prisma/client": "^6.19.1",
+    "nuxt": "^4.2.2",
+    "prisma": "^6.19.1",
+    "vue": "^3.5.26",
+    "vue-router": "^4.6.4"
+  }
+}

prisma.config.ts

@@ -0,0 +1,14 @@
+// This file was generated by Prisma, and assumes you have installed the following:
+// npm install --save-dev prisma dotenv
+import "dotenv/config";
+import { defineConfig } from "prisma/config";
+
+export default defineConfig({
+  schema: "prisma/schema.prisma",
+  migrations: {
+    path: "prisma/migrations",
+  },
+  datasource: {
+    url: process.env["DATABASE_URL"],
+  },
+});

prisma/migrations/20260102115918_init_revised_schema/migration.sql

@@ -0,0 +1,88 @@
+/*
+  Warnings:
+
+  - Added the required column `password` to the `User` table without a default value. This is not possible if the table is not empty.
+  - Added the required column `updatedAt` to the `User` table without a default value. This is not possible if the table is not empty.
+
+*/
+-- CreateTable
+CREATE TABLE "Habit" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    "name" TEXT NOT NULL,
+    "daysOfWeek" JSONB NOT NULL,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" DATETIME NOT NULL,
+    "userId" INTEGER NOT NULL,
+    CONSTRAINT "Habit_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User" ("id") ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+-- CreateTable
+CREATE TABLE "HabitCompletion" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    "date" DATETIME NOT NULL,
+    "habitId" INTEGER NOT NULL,
+    CONSTRAINT "HabitCompletion_habitId_fkey" FOREIGN KEY ("habitId") REFERENCES "Habit" ("id") ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+-- CreateTable
+CREATE TABLE "DailyVisit" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    "date" DATETIME NOT NULL,
+    "userId" INTEGER NOT NULL,
+    CONSTRAINT "DailyVisit_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User" ("id") ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+-- CreateTable
+CREATE TABLE "Village" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    "userId" INTEGER NOT NULL,
+    CONSTRAINT "Village_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User" ("id") ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+-- CreateTable
+CREATE TABLE "VillageObject" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    "type" TEXT NOT NULL,
+    "x" INTEGER NOT NULL,
+    "y" INTEGER NOT NULL,
+    "obstacleMetadata" TEXT,
+    "cropType" TEXT,
+    "plantedAt" DATETIME,
+    "villageId" INTEGER NOT NULL,
+    CONSTRAINT "VillageObject_villageId_fkey" FOREIGN KEY ("villageId") REFERENCES "Village" ("id") ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+-- RedefineTables
+PRAGMA defer_foreign_keys=ON;
+PRAGMA foreign_keys=OFF;
+CREATE TABLE "new_User" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    "email" TEXT NOT NULL,
+    "password" TEXT NOT NULL,
+    "nickname" TEXT,
+    "avatar" TEXT DEFAULT '/avatars/default.png',
+    "coins" INTEGER NOT NULL DEFAULT 0,
+    "exp" INTEGER NOT NULL DEFAULT 0,
+    "soundOn" BOOLEAN NOT NULL DEFAULT true,
+    "confettiOn" BOOLEAN NOT NULL DEFAULT true,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" DATETIME NOT NULL
+);
+INSERT INTO "new_User" ("createdAt", "email", "id") SELECT "createdAt", "email", "id" FROM "User";
+DROP TABLE "User";
+ALTER TABLE "new_User" RENAME TO "User";
+CREATE UNIQUE INDEX "User_email_key" ON "User"("email");
+PRAGMA foreign_keys=ON;
+PRAGMA defer_foreign_keys=OFF;
+
+-- CreateIndex
+CREATE UNIQUE INDEX "HabitCompletion_habitId_date_key" ON "HabitCompletion"("habitId", "date");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "DailyVisit_userId_date_key" ON "DailyVisit"("userId", "date");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Village_userId_key" ON "Village"("userId");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "VillageObject_villageId_x_y_key" ON "VillageObject"("villageId", "x", "y");

prisma/schema.prisma

@@ -1,3 +1,12 @@
+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "sqlite"
+  url      = env("DATABASE_URL")
+}
+
 // prisma/schema.prisma
 
 // Enums
@@ -61,7 +70,7 @@ model Habit {
 // This creates a history of the user's progress for each habit.
 model HabitCompletion {
   id      Int      @id @default(autoincrement())
-  date    DateTime @db.Date // Store only the date part
+  date    DateTime // Store only the date part
 
   // Relations
   habit   Habit    @relation(fields: [habitId], references: [id], onDelete: Cascade)
@@ -74,7 +83,7 @@ model HabitCompletion {
 // quest and for calculating 5-day streaks.
 model DailyVisit {
   id     Int      @id @default(autoincrement())
-  date   DateTime @db.Date // Store only the date part
+  date   DateTime // Store only the date part
 
   // Relations
   user   User     @relation(fields: [userId], references: [id], onDelete: Cascade)

public/robots.txt

@@ -0,0 +1,2 @@
+User-Agent: *
+Disallow:

tsconfig.json

@@ -0,0 +1,18 @@
+{
+  // https://nuxt.com/docs/guide/concepts/typescript
+  "files": [],
+  "references": [
+    {
+      "path": "./.nuxt/tsconfig.app.json"
+    },
+    {
+      "path": "./.nuxt/tsconfig.server.json"
+    },
+    {
+      "path": "./.nuxt/tsconfig.shared.json"
+    },
+    {
+      "path": "./.nuxt/tsconfig.node.json"
+    }
+  ]
+}