Add Cursor rules and remove outdated database doc

.cursor/00-overview.mdc

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+---
+description: Overview rules for Hawk monorepo - always applied
+alwaysApply: true
+---
+# Hawk — Project Overview
+
+Hawk is an error monitoring and observability platform for applications and services.
+It is an open-source.
+
+Primary goals of Hawk:
+- Collect, store, and analyze application errors
+- Help teams detect regressions and production issues early
+- Provide actionable context (stack traces, metadata, releases, environments)
+
+## Mono-repository structure
+
+This is a mono-repository consisting of the separate GitHub sub-repostories.
+It is used for development purposes but also can be used to self-host Hawk.
+
+## Architecture
+
+See rules for architecture in `.cursor/11-arch.mdc`.
+
+## Documentation
+
+Detailed feature documentation lives in:
+- `docs/` — source of truth for specs and flows
+
+## When modifying code
+
+Before making changes:
+1. Identify which layer you are working in: Catcher(SDK), API, Garage, Workers, Collector
+2. Check related documentation in root `docs/` directory or in the service's own `docs/` directory
+3. Preserve existing public APIs unless explicitly instructed
+
+## Full Hawk Features Overview
+
+See [Hawk Usage Guide](../docs/hawk-usage-guide-ru.md) for full features overview.

.cursor/11-arch.mdc

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+---
+description: Architecture rules for Hawk monorepo - always applied
+alwaysApply: true
+---
+## Architecture (high level)
+
+Hawk consists of:
+- SDKs / Catchers (JS, Node.js, PHP, Python, etc.)
+- API backend (event ingestion, processing, grouping) — GraphQL API
+- Database (events, issues, users, projects) — MongoDB
+- Garage — Web UI (dashboard, issues, charts, settings) — Vue.js 3
+- Workers — Background tasks (email, Telegram, Slack notifications) — Node.js
+- Collector — Entry point for all error events from client applications — Go
+- Accounting — it is disabled and not used, do not use it in your code and memory
+
+Some parts are split into separate repositories/packages but work as a single system.
+
+Detailed description of the system architecture is in [docs/architecture.md](../docs/architecture.md).

.cursor/22-commands.mdc

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+---
+alwaysApply: true
+---

.cursor/33-style.mdc

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+---
+alwaysApply: true
+---

.cursor/44-api.mdc

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+---
+description: API service rules - GraphQL, models, SSO, billing
+globs: ["api/**"]
+---
+
+# Hawk API Service - Rules for Cursor
+
+Hawk API service (`api/`) is the main GraphQL API for frontend and external integrations.
+
+## Technologies
+
+- **Node.js/TypeScript**
+- **GraphQL** (Apollo Server)
+- **Express**
+- **MongoDB** (through `mongodb` driver)
+- **RabbitMQ** (for integration with workers)
+- **JWT** for authentication
+
+## Structure
+
+```
+api/
+├── src/
+│   ├── models/           # MongoDB models
+│   ├── resolvers/        # GraphQL резолверы
+│   ├── typeDefs/         # GraphQL schema
+│   ├── directives/       # GraphQL directives
+│   ├── billing/          # Billing integration
+│   ├── sso/              # SSO functionality (SAML)
+│   ├── utils/            # Utilities
+│   └── types/            # TypeScript types
+├── test/                 # Tests
+│   └── integration/      # Integration tests
+└── migrations/           # MongoDB migrations
+```
+
+## Data models
+
+Модели находятся в `src/models/`:
+- Inherit from `AbstractModel`
+- Model factories inherit from `AbstractModelFactory`
+- Use MongoDB collections directly
+
+## GraphQL
+
+- **Schema**: `src/typeDefs/` — type definitions
+- **Resolvers**: `src/resolvers/` — query logic
+- **Directives**: `src/directives/` — validation and authorization
+
+Important directives:
+- `@requireAdmin` — requires admin rights
+- `@requireUserInWorkspace` — requires user involvement in workspace
+- `@allowAnon` — allows anonymous access. Used for auth queries.
+
+## SSO (Single Sign-On)
+
+**Important**: SSO is fully described in the documentation:
+
+- **[SSO Specification](../docs/sso.md)** — full SSO functionality specification
+- **[SSO Implementation Plan](../docs/sso-implementation.md)** — detailed implementation plan
+- **[SSO Testing Guide](../docs/sso-testing-guide.md)** — testing guide
+
+## Billing
+
+We use CloudPayments for billing.
+
+Detailed documentation is in [docs/billing/README.md](../docs/billing/README.md).
+
+Code is in `src/billing/`.
+
+Cloudpayments webhooks are handled not by GraphQL, but regular express routes handlers in `src/billing/cloudpayments.ts`. 
+
+## Testing
+
+- **Unit tests**: `test/models/`, `test/resolvers/`, `test/utils/`
+- **Integration tests**: `test/integration/`
+
+
+## Migrations
+
+We need to write migration when we change the database schema.
+
+Use following command to create a new migration:
+
+```bash
+yarn migrations:create {migrationName}
+```
+
+Use following command to apply a new migration:
+
+```bash
+yarn migrations:up
+```
+
+Use following command to rollback the last migration:
+
+```bash
+yarn migrations:down
+```
+
+Migrations are stored in `migrations/` directory.

.cursor/55-garage.mdc

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+---
+description: Garage frontend rules - Vue.js 3, Vuex, GraphQL client
+globs: ["garage/**"]
+---
+
+# Hawk Garage Service - Rules for Cursor
+
+Hawk Garage (`garage/`) is web app for Hawk.
+
+## Technologies
+
+- **Vue.js 3** (Composition API + Options API)
+- **TypeScript**
+- **Vite** (builder)
+- **Vuex** (state management)
+- **Vue Router** (routing)
+- **GraphQL** (Apollo Client for API requests)
+- **Storybook** (for components)
+
+## Structure
+
+```
+garage/
+├── src/
+│   ├── components/      # Vue components
+│   ├── views/           # Pages (routes)
+│   ├── store/           # Vuex store модули
+│   ├── router/          # Vue Router configuration
+│   ├── api/             # GraphQL client and queries
+│   ├── i18n/            # Internationalization
+│   ├── styles/          # Global styles
+│   └── utils/           # Utilities
+├── public/              # Static files
+└── config/              # Configuration
+```
+
+## Components
+
+- Vue 3 components (`.vue` files)
+- Always use `<script setup>` and TypeScript for new components.
+
+## State Management (Vuex)
+
+Vuex store modules in `src/store/modules/`:
+- `user` — current user
+- `workspace` — workspaces
+- `project` — projects
+- Other modules by domains
+
+Actions types are defined in `actionTypes.js` files of modules.
+
+## API calls
+
+- Always use `api.call()` for API calls. Never use `api.callOld()`.
+- API responses should be handled on Store level. Filter and handle errors there.
+
+
+## Internationalization
+
+- Always move all UI tokens to i18n.
+- Always fill all translations in `messages/` files.
+
+## Styles
+
+- Global styles in `src/styles/`
+- Component styles via `<style>` blocks in `.vue` files
+- Possible support for CSS preprocessors
+- Always use nesting in styles.
+- Use BEM notation for component classes: 
+  - `block`
+  - `block__element`
+  - `block__element-child`
+  - `block__element-child--modifier`

.cursorignore

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+# dependencies
+node_modules/
+
+# some docs for end-user
+docs/how-to-get-events.md
+docs/how-to-run-local-hawk.md
+docs/how-to-view-registry-queues.md
+
+# Legacy modules
+accounting/
+yard/
+
+# build output
+dist/
+build/
+coverage/
+.tmp/
+.cache/
+
+# logs & dumps
+*.log
+*.heapprofile
+*.cpuprofile
+dump/
+
+# generated data
+*.map
+*.min.js
+*.lock
+
+# sensitive data
+.env