Add core functionality for mobile post scheduling app

Adds necessary dependencies including axios and react-native-calendars to pnpm-lock.yaml.

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replit.md

@@ -16,12 +16,49 @@ pnpm workspace monorepo using TypeScript. Each package manages its own dependenc
 - **API codegen**: Orval (from OpenAPI spec)
 - **Build**: esbuild (CJS bundle)
 
+## Artifacts
+
+### PostizMobile (`artifacts/postiz-mobile`)
+Expo (React Native) mobile client for a self-hosted Postiz instance.
+
+- **Preview path**: `/`
+- **Theme**: Dark-only (`userInterfaceStyle: dark`)
+- **Auth**: API key stored in `expo-secure-store`, passed as `Authorization` header
+
+#### Screens / Tabs
+1. **Calendar** (`app/(tabs)/index.tsx`) — Monthly calendar with post dots, tap day to see posts
+2. **Posts** (`app/(tabs)/posts.tsx`) — Filterable list of posts with status badges, swipe to delete
+3. **Compose** (`app/(tabs)/compose.tsx`) — Text editor, channel picker, date/time picker, image upload
+4. **Settings** (`app/(tabs)/settings.tsx`) — API key + base URL, validation, SecureStore persistence
+
+#### Key Files
+- `context/PostizContext.tsx` — Axios client wired with API key/base URL; loaded from SecureStore on boot
+- `components/PostCard.tsx` — Swipeable post card with delete action
+- `components/StatusBadge.tsx` — QUEUE / PUBLISHED / ERROR / DRAFT badges
+- `components/ChannelChip.tsx` — Integration channel selector chip
+
+#### External API
+- Base URL: `https://postiz.gyozamancave.fr/public/v1` (configurable)
+- `GET /integrations` — List channels
+- `GET /posts?startDate&endDate` — List posts
+- `POST /posts` — Create/schedule post
+- `DELETE /posts/:id` — Delete post
+- `POST /upload` — Upload media
+
+#### Packages Added
+- `axios` — HTTP client
+- `expo-secure-store` — Secure API key storage
+- `react-native-calendars` — Calendar UI
+- `@react-native-community/datetimepicker` — Date/time picker for compose
+
+### API Server (`artifacts/api-server`)
+Express 5 backend. Currently serves `/api/healthz`. Extend for server-side features.
+
 ## Key Commands
 
 - `pnpm run typecheck` — full typecheck across all packages
 - `pnpm run build` — typecheck + build all packages
 - `pnpm --filter @workspace/api-spec run codegen` — regenerate API hooks and Zod schemas from OpenAPI spec
 - `pnpm --filter @workspace/db run push` — push DB schema changes (dev only)
-- `pnpm --filter @workspace/api-server run dev` — run API server locally
 
 See the `pnpm-workspace` skill for workspace structure, TypeScript setup, and package details.