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docs: replace upstream README with Lotus Chat changes diff

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Lists all differences from upstream Cinny: branding, TDS dark/light themes,
chat backgrounds, call improvements (PTT/deafen/screenshare confirm/noise
suppression/camera default), new settings section, and technical changes.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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# Cinny
<p>
<a href="https://github.com/ajbura/cinny/releases">
<img alt="GitHub release downloads" src="https://img.shields.io/github/downloads/ajbura/cinny/total?logo=github&style=social"></a>
<a href="https://hub.docker.com/r/ajbura/cinny">
<img alt="DockerHub downloads" src="https://img.shields.io/docker/pulls/ajbura/cinny?logo=docker&style=social"></a>
<a href="https://fosstodon.org/@cinnyapp">
<img alt="Follow on Mastodon" src="https://img.shields.io/mastodon/follow/106845779685925461?domain=https%3A%2F%2Ffosstodon.org&logo=mastodon&style=social"></a>
<a href="https://twitter.com/intent/follow?screen_name=cinnyapp">
<img alt="Follow on Twitter" src="https://img.shields.io/twitter/follow/cinnyapp?logo=twitter&style=social"></a>
<a href="https://cinny.in/#sponsor">
<img alt="Sponsor Cinny" src="https://img.shields.io/opencollective/all/cinny?logo=opencollective&style=social"></a>
</p>
# Lotus Chat
A Matrix client focusing primarily on simple, elegant and secure interface. The main goal is to have an instant messaging application that is easy on people and has a modern touch.
- [Roadmap](https://github.com/orgs/cinnyapp/projects/1)
- [Contributing](./CONTRIBUTING.md)
A Matrix client for [Lotus Guild](https://lotusguild.org) — forked from [Cinny](https://github.com/cinnyapp/cinny) v4.11.1.
<img align="center" src="https://raw.githubusercontent.com/cinnyapp/cinny-site/main/assets/preview2-light.png" height="380">
Deployed at [chat.lotusguild.org](https://chat.lotusguild.org).
## Getting started
The web app is available at [app.cinny.in](https://app.cinny.in/) and gets updated on each new release. The `dev` branch is continuously deployed at [dev.cinny.in](https://dev.cinny.in) but keep in mind that it could have things broken.
---
You can also download our desktop app from the [cinny-desktop repository](https://github.com/cinnyapp/cinny-desktop).
## Changes from upstream Cinny
## Self-hosting
To host Cinny on your own, simply download the tarball from [GitHub releases](https://github.com/cinnyapp/cinny/releases/latest), and serve the files from `dist/` using your preferred webserver. Alternatively, you can just pull the docker image from [DockerHub](https://hub.docker.com/r/ajbura/cinny) or [GitHub Container Registry](https://github.com/cinnyapp/cinny/pkgs/container/cinny).
### Branding & Identity
* The default homeservers and explore pages are defined in [`config.json`](config.json).
- Package renamed to `lotus-chat`, description updated to "Lotus Chat — Matrix client for Lotus Guild"
- App title changed from "Cinny" to "Lotus Chat" throughout
- Favicon, PWA icons, and all icon sizes (57×57 → 180×180 Apple touch icons) replaced with Lotus.png variants
- Logo in About dialog and Auth page replaced with official Lotus.png
- Auth footer rewritten: shows dynamic version from `package.json`, links to lotusguild.org, chat.lotusguild.org, and matrix.lotusguild.org
- Welcome page tagline changed from "Yet another matrix client" to "A Matrix client for Lotus Guild"
- Encryption key export filename changed from `cinny-keys.txt` to `lotus-keys.txt`
- `manifest.json` updated with Lotus name, description, and branding colors
* You need to set up redirects to serve the assests. Example configurations; [netlify](netlify.toml), [nginx](contrib/nginx/cinny.domain.tld.conf), [caddy](contrib/caddy/caddyfile).
* If you have trouble configuring redirects you can [enable hash routing](config.json#L35) — the url in the browser will have a `/#/` between the domain and open channel (ie. `app.cinny.in/#/home/` instead of `app.cinny.in/home/`) but you won't have to configure your webserver.
### LotusGuild Terminal Design System (TDS) v1.2
* To deploy on subdirectory, you need to rebuild the app youself after updating the `base` path in [`build.config.ts`](build.config.ts).
* For example, if you want to deploy on `https://cinny.in/app`, then set `base: '/app'`.
A full custom theme engine layered on top of Cinny's vanilla-extract theming:
<details><summary><b>PGP Public Key to verify tarball</b></summary>
**Dark mode** (`LotusTerminalTheme`):
- CRT terminal aesthetic: scanline overlay, vignette, phosphor glow
- Palette: bg `#030508`, orange `#FF6B00`, cyan `#00D4FF`, green `#00FF88`, text `#c4d9ee`
- Monospace font stack, terminal-style scrollbars
- Custom hex-grid and circuit-board CSS background patterns
- Matrix-style boot messages on the welcome page
- CSS variables: `--lt-*` family covering colors, glow effects, borders, animations
```
-----BEGIN PGP PUBLIC KEY BLOCK-----
**Light mode** (`LotusTerminalLightTheme`):
- Full light palette: bg `#edf0f5`, orange `#c44e00`, cyan `#0062b8`, green `#006d35`, text `#111827`
- No CRT effects (scanlines, vignette disabled)
- Light-mode scrollbars, adjusted code block colors, semantic color overrides
- Scoped to `html[data-theme="light"] body.lotusTerminalBodyClass`
- `ThemeManager.tsx` sets `data-theme` attribute based on active theme kind
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=WtqZ
-----END PGP PUBLIC KEY BLOCK-----
```
</details>
**Chat Backgrounds** (18+ custom patterns, all TDS-aware):
- Blueprint grid, carbon fiber, starfield, topographic contours, herringbone, crosshatch
- Chevron, polka dots, triangles, plaid
- All patterns use CSS custom properties — adapt to both TDS dark and light themes
- Settings toggle for showing per-message sender profiles
## Local development
> [!TIP]
> We recommend using a version manager as versions change very quickly. You will likely need to switch between multiple Node.js versions based on the needs of different projects you're working on. [NVM on windows](https://github.com/coreybutler/nvm-windows#installation--upgrades) on Windows and [nvm](https://github.com/nvm-sh/nvm) on Linux/macOS are pretty good choices. Recommended nodejs version is Krypton LTS (v24.13.1).
### Voice / Video Call Improvements
Execute the following commands to start a development server:
```sh
npm ci # Installs all dependencies
npm start # Serve a development version
```
- **Camera default OFF**: Camera no longer persists across sessions via localStorage. Always starts disabled. Optional `cameraOnJoin` setting for explicit opt-in.
- **Deafen button**: Tooltip corrected to "Deafen" / "Undeafen" (was "Turn Off Sound" / "Turn On Sound")
- **Screenshare confirmation**: A confirm dialog appears before screenshare is broadcast to call participants
- **Push to Talk (PTT)**:
- Configurable keybind (default: Space) via Settings > General > Calls
- Mic activates on keydown, deactivates on keyup
- Visual indicator: orange "PTT — Hold SPACE" when PTT mode is on, green "● LIVE" while transmitting
- Implemented via `CallControl.setMicrophone()` public method on the widget bridge
- **Noise suppression toggle**: Settings > General > Calls — passes `noiseSuppression` URL parameter to the embedded Element Call widget
To build the app:
```sh
npm run build # Compiles the app into the dist/ directory
```
### Settings Additions
### Running with Docker
This repository includes a Dockerfile, which builds the application from source and serves it with Nginx on port 80. To
use this locally, you can build the container like so:
```
docker build -t cinny:latest .
```
**Settings > General > Calls** (new section):
- Camera on join: toggle whether camera starts enabled
- Noise suppression: toggle noise suppression in calls (default: on)
- Push to Talk: enable PTT mode and configure the keybind
You can then run the container you've built with a command similar to this:
```
docker run -p 8080:80 cinny:latest
```
### Editor
This will forward your `localhost` port 8080 to the container's port 80. You can visit the app in your browser by navigating to `http://localhost:8080`.
- Editor toolbar visibility is user-configurable (toggle added to message composer settings)
### Technical
- All upstream Cinny URLs replaced (cinny.in → lotusguild.org, Cinny Matrix room → Lotus Guild room)
- Version string is dynamically read from `package.json` at build time — no hardcoded version strings
- `useCallEmbed.ts`: noise suppression setting wired through `createCallEmbed` → `CallEmbed.getWidget()` → Element Call URL params
- `CallControl.ts`: added `setMicrophone(enabled: boolean)` public method for programmatic mic control (used by PTT)
- `callPreferences` atom: never persists `video: true` to localStorage; camera state always resets to OFF on page load
---
## Upstream
Based on [Cinny](https://github.com/cinnyapp/cinny) — a Matrix client focusing on simple, elegant and secure interface.