docs: add open-source project files (README, license, contributing)

Add professional open-source scaffolding:
- README.md with badges, features, architecture, and setup guide
- LICENSE (PolyForm Noncommercial 1.0.0)
- CONTRIBUTING.md with guidelines
- CHANGELOG.md for v1.0.0
- GitHub issue and PR templates
- Updated .gitignore

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Report a bug to help improve Swoosh
+title: ''
+labels: bug
+assignees: ''
+---
+
+**Describe the bug**
+A clear description of what the bug is.
+
+**Steps to reproduce**
+1. Go to '...'
+2. Tap on '...'
+3. See error
+
+**Expected behavior**
+What you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots.
+
+**Device info**
+- Device: [e.g. Pixel 7]
+- Android version: [e.g. 14]
+- App version: [e.g. 1.0]
+
+**Additional context**
+Any other context about the problem.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for Swoosh
+title: ''
+labels: enhancement
+assignees: ''
+---
+
+**Problem**
+What problem does this solve?
+
+**Proposed solution**
+How do you think it should work?
+
+**Alternatives considered**
+Any alternative solutions you've thought about.
+
+**Additional context**
+Any other context, mockups, or references.

.github/PULL_REQUEST_TEMPLATE.md

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+## Summary
+
+Brief description of the changes.
+
+## Changes
+
+-
+
+## Testing
+
+- [ ] Unit tests pass (`./gradlew test`)
+- [ ] Tested on device/emulator

.gitignore

@@ -1,11 +1,31 @@
+# Gradle
+.gradle/
+build/
+/app/build/
+
+# IDE
 *.iml
-.gradle
+.idea/
-/local.properties
+*.swp
-/.idea
+*~
-.DS_Store
+
-/build
+# Local properties
-/captures
-.externalNativeBuild
-.cxx
 local.properties
-/app/build
+
+# Android
+/captures
+.externalNativeBuild/
+.cxx/
+
+# macOS
+.DS_Store
+
+# Keystore (do not commit signing keys)
+*.jks
+*.keystore
+
+# Debug logs
+firebase-debug.log
+
+# Secrets
+*.env

CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
+
+## [1.0.0] - 2024-12-01
+
+### Added
+
+- Ghost Admin API integration with JWT authentication
+- Post creation with title and body
+- Image upload from gallery and camera
+- Link preview extraction via Open Graph
+- Scheduled publishing
+- Offline-first architecture with Room database
+- Background sync via WorkManager with exponential backoff
+- Encrypted credential storage (AES-256-GCM)
+- Setup wizard for Ghost blog configuration
+- Feed screen with pull-to-refresh
+- Post detail view
+- Settings screen with logout
+- Material 3 UI with Jetpack Compose
+- Comprehensive unit test suite (116 tests)

CONTRIBUTING.md

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+# Contributing to Swoosh
+
+Thanks for your interest in contributing! Here's how you can help.
+
+## Getting started
+
+1. Fork the repository
+2. Clone your fork: `git clone https://github.com/YOUR_USERNAME/Swoosh.git`
+3. Create a feature branch: `git checkout -b feature/your-feature`
+4. Make your changes
+5. Run the tests: `./gradlew test`
+6. Commit and push to your fork
+7. Open a Pull Request
+
+## Development setup
+
+- Android Studio Hedgehog (2023.1.1) or later
+- JDK 17
+- Android SDK 34
+
+## Guidelines
+
+- Follow existing code style and patterns (MVVM, Repository, Compose)
+- Write tests for new functionality
+- Keep commits focused — one logical change per commit
+- Use descriptive commit messages
+
+## Reporting bugs
+
+Open an [issue](https://github.com/pawelorzech/Swoosh/issues) with:
+
+- Steps to reproduce
+- Expected vs actual behavior
+- Android version and device info
+
+## Feature requests
+
+Open an [issue](https://github.com/pawelorzech/Swoosh/issues) with a description of the feature and why it would be useful.
+
+## License
+
+By contributing, you agree that your contributions will be licensed under the [PolyForm Noncommercial License 1.0.0](LICENSE).

LICENSE

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+# PolyForm Noncommercial License 1.0.0
+
+<https://polyformproject.org/licenses/noncommercial/1.0.0>
+
+## Acceptance
+
+In order to get any license under these terms, you must agree
+to them as both strict obligations and conditions to all
+your licenses.
+
+## Copyright License
+
+The licensor grants you a copyright license for the
+software to do everything you might do with the software
+that would otherwise infringe the licensor's copyright
+in it for any permitted purpose. However, you may
+only distribute the software according to [Distribution
+License](#distribution-license) and make changes or new works
+based on the software according to [Changes and New Works
+License](#changes-and-new-works-license).
+
+## Distribution License
+
+The licensor grants you an additional copyright license
+to distribute copies of the software. Your license
+to distribute covers distributing the software with
+changes and new works permitted by [Changes and New Works
+License](#changes-and-new-works-license).
+
+## Notices
+
+You must ensure that anyone who gets a copy of any part of
+the software from you also gets a copy of these terms or the
+URL for them above, as well as copies of any plain-text lines
+beginning with `Required Notice:` that the licensor provided
+with the software. For example:
+
+> Required Notice: Copyright Paweł Orzech (https://pawelorzech.pl)
+
+## Changes and New Works License
+
+The licensor grants you an additional copyright license to
+make changes and new works based on the software for any
+permitted purpose.
+
+## Patent License
+
+The licensor grants you a patent license for the software that
+covers patent claims the licensor can license, or becomes able
+to license, that you would infringe by using the software.
+
+## Noncommercial Purposes
+
+Any noncommercial purpose is a permitted purpose.
+
+## Personal Uses
+
+Personal use for research, experiment, and testing for
+the benefit of public knowledge, personal study, private
+entertainment, hobby projects, amateur pursuits, or religious
+observance, without any anticipated commercial application,
+is use for a permitted purpose.
+
+## Noncommercial Organizations
+
+Use by any charitable organization, educational institution,
+public research organization, public safety or health
+organization, environmental protection organization,
+or government institution is use for a permitted purpose
+regardless of the source of funding or obligations resulting
+from the funding.
+
+## Fair Use
+
+You may have "fair use" rights for the software under the
+law. These terms do not limit them.
+
+## No Other Rights
+
+These terms do not allow you to sublicense or transfer any of
+your licenses to anyone else, or prevent the licensor from
+granting licenses to anyone else. These terms do not imply
+any other licenses.
+
+## Patent Defense
+
+If you make any written claim that the software infringes or
+contributes to infringement of any patent, your patent license
+for the software granted under these terms ends immediately. If
+your company makes such a claim, your patent license ends
+immediately for work on behalf of your company.
+
+## Violations
+
+The first time you are notified in writing that you have
+violated any of these terms, or done anything with the software
+not covered by your licenses, your licenses can nonetheless
+continue if you come into full compliance with these terms,
+and take practical steps to correct past violations, within
+32 days of receiving notice. Otherwise, all your licenses
+end immediately.
+
+## No Liability
+
+***As far as the law allows, the software comes as is, without
+any warranty or condition, and the licensor will not be liable
+to you for any damages arising out of these terms or the use
+or nature of the software, under any kind of legal claim.***
+
+## Definitions
+
+The **licensor** is the individual or entity offering these
+terms, and the **software** is the software the licensor makes
+available under these terms.
+
+**You** refers to the individual or entity agreeing to these
+terms.
+
+**Your company** is any legal entity, sole proprietorship,
+or other kind of organization that you work for, plus all
+organizations that have control over, are under the control of,
+or are under common control with that organization. **Control**
+means ownership of substantially all the assets of an entity,
+or the power to direct its management and policies by vote,
+contract, or otherwise. Control can be direct or indirect.
+
+**Your licenses** are all the licenses granted to you for the
+software under these terms.
+
+**Use** means anything you do with the software requiring one
+of your licenses.
+
+---
+
+Required Notice: Copyright (c) 2024 Paweł Orzech (https://pawelorzech.pl)

README.md

@@ -0,0 +1,119 @@
+# Swoosh
+
+A native Android microblogging client for [Ghost CMS](https://ghost.org). Write, publish, and manage short-form posts from your phone — with offline support, image uploads, link previews, and scheduled publishing.
+
+[![Android](https://img.shields.io/badge/Android-8.0%2B-3DDC84?logo=android&logoColor=white)](https://developer.android.com)
+[![Kotlin](https://img.shields.io/badge/Kotlin-1.9-7F52FF?logo=kotlin&logoColor=white)](https://kotlinlang.org)
+[![Jetpack Compose](https://img.shields.io/badge/Jetpack%20Compose-Material%203-4285F4?logo=jetpackcompose&logoColor=white)](https://developer.android.com/jetpack/compose)
+[![License](https://img.shields.io/badge/License-PolyForm%20Noncommercial-blue)](LICENSE)
+
+## Features
+
+- **Ghost Admin API** — Full integration via JWT authentication (HS256)
+- **Offline-first** — Posts are saved locally and synced when connectivity returns
+- **Image uploads** — Attach photos from your gallery or camera
+- **Link previews** — Automatic Open Graph metadata extraction (title, description, thumbnail)
+- **Scheduled publishing** — Set a future publish date for your posts
+- **Mobiledoc format** — Native Ghost content format with text paragraphs and bookmark cards
+- **Encrypted credentials** — API keys stored with AES-256-GCM via AndroidX Security
+- **Background sync** — WorkManager handles upload queue with exponential backoff
+- **Material 3 UI** — Clean, modern interface built entirely with Jetpack Compose
+
+## Screenshots
+
+> Coming soon — contributions welcome!
+
+## Architecture
+
+MVVM with Repository pattern, single-module Gradle project.
+
+```
+com.swoosh.microblog/
+├── data/
+│   ├── api/            # Retrofit client, JWT auth, interceptors
+│   ├── db/             # Room database, DAOs, type converters
+│   ├── model/          # GhostPost (API), LocalPost (DB), FeedPost (UI)
+│   └── repository/     # PostRepository, OpenGraphFetcher
+├── ui/
+│   ├── feed/           # Post list with pull-to-refresh
+│   ├── composer/       # Post creation and editing
+│   ├── detail/         # Full post view
+│   ├── setup/          # Initial configuration wizard
+│   ├── settings/       # App settings and logout
+│   ├── navigation/     # Compose Navigation graph
+│   └── theme/          # Material 3 theming
+└── worker/             # PostUploadWorker (WorkManager)
+```
+
+**Data flow:** Compose UI → ViewModel → Repository → Room (local) + Retrofit (remote). Posts are persisted to Room first, then queued for upload via WorkManager.
+
+## Getting started
+
+### Prerequisites
+
+- Android Studio Hedgehog (2023.1.1) or later
+- JDK 17
+- Android SDK 34
+- A [Ghost](https://ghost.org) blog with Admin API access
+
+### Ghost setup
+
+1. In your Ghost admin panel, go to **Settings → Integrations**
+2. Create a new **Custom Integration**
+3. Copy the **Admin API Key** (format: `id:secret`)
+4. Note your Ghost blog URL (e.g. `https://yourblog.com`)
+
+### Build and run
+
+```bash
+git clone https://github.com/pawelorzech/Swoosh.git
+cd Swoosh
+./gradlew assembleDebug
+```
+
+Install the debug APK on your device or emulator, then follow the setup wizard to connect your Ghost blog.
+
+## Building
+
+```bash
+./gradlew assembleDebug          # Debug APK
+./gradlew assembleRelease        # Release APK (ProGuard enabled)
+```
+
+## Testing
+
+The project includes unit tests with JUnit 4 and Robolectric:
+
+```bash
+./gradlew test                   # Run all tests
+./gradlew app:testDebugUnitTest  # Debug variant only
+```
+
+Test coverage includes JWT generation, mobiledoc building, URL normalization, data model serialization, auth interceptors, and time formatting.
+
+## Tech stack
+
+| Layer | Technology |
+|-------|-----------|
+| UI | Jetpack Compose, Material 3 |
+| Navigation | Compose Navigation |
+| Architecture | MVVM, StateFlow, Repository pattern |
+| Networking | Retrofit 2, OkHttp 4 |
+| Images | Coil |
+| Database | Room |
+| Background | WorkManager |
+| Auth | JJWT (HS256), EncryptedSharedPreferences |
+| Link parsing | Jsoup |
+| Testing | JUnit 4, Robolectric, MockWebServer |
+
+## Contributing
+
+Contributions are welcome! Please see [CONTRIBUTING.md](CONTRIBUTING.md) for guidelines.
+
+## License
+
+This project is licensed under the [PolyForm Noncommercial License 1.0.0](LICENSE) — you can use, modify, and share it for any non-commercial purpose. Commercial use requires permission from the author.
+
+## Author
+
+**Paweł Orzech** — [pawelorzech.pl](https://pawelorzech.pl)