feat: add fluxer upstream source and self-hosting documentation

- Clone of github.com/fluxerapp/fluxer (official upstream)
- SELF_HOSTING.md: full VM rebuild procedure, architecture overview,
  service reference, step-by-step setup, troubleshooting, seattle reference
- dev/.env.example: all env vars with secrets redacted and generation instructions
- dev/livekit.yaml: LiveKit config template with placeholder keys
- fluxer-seattle/: existing seattle deployment setup scripts

fluxer/fluxer_desktop/packaging/aur/PKGBUILD

@@ -0,0 +1,51 @@
+# Maintainer: Fluxer Contributors <developers@fluxer.app>
+pkgname=fluxer-bin
+pkgver=PLACEHOLDER_VERSION
+pkgrel=1
+pkgdesc='Instant messaging and VoIP application'
+arch=('x86_64' 'aarch64')
+url='https://fluxer.app'
+license=('AGPL-3.0-or-later')
+depends=('gtk3' 'libnotify' 'nss' 'libxss' 'libxtst' 'xdg-utils'
+         'at-spi2-core' 'util-linux-libs' 'libsecret' 'libappindicator-gtk3')
+optdepends=('libpipewire: screen sharing via PipeWire')
+provides=('fluxer')
+conflicts=('fluxer')
+options=('!strip' '!debug')
+
+_filename_x86_64="fluxer-stable-${pkgver}-x86_64.tar.gz"
+_filename_aarch64="fluxer-stable-${pkgver}-aarch64.tar.gz"
+
+source_x86_64=("${_filename_x86_64}::https://api.fluxer.app/dl/desktop/stable/linux/x64/${pkgver}/tar_gz")
+source_aarch64=("${_filename_aarch64}::https://api.fluxer.app/dl/desktop/stable/linux/arm64/${pkgver}/tar_gz")
+sha256sums_x86_64=('PLACEHOLDER_SHA256_X64')
+sha256sums_aarch64=('PLACEHOLDER_SHA256_ARM64')
+
+package() {
+    install -d "${pkgdir}/opt/fluxer"
+    cp -r "${srcdir}/"* "${pkgdir}/opt/fluxer/"
+    chmod +x "${pkgdir}/opt/fluxer/fluxer"
+
+    install -d "${pkgdir}/usr/bin"
+    ln -s /opt/fluxer/fluxer "${pkgdir}/usr/bin/fluxer"
+
+    install -Dm644 /dev/stdin "${pkgdir}/usr/share/applications/fluxer.desktop" <<EOF
+[Desktop Entry]
+Name=Fluxer
+Comment=Instant messaging and VoIP application
+Exec=/opt/fluxer/fluxer %U
+Icon=fluxer
+Type=Application
+Categories=Network;InstantMessaging;
+StartupWMClass=fluxer
+MimeType=x-scheme-handler/fluxer;
+Terminal=false
+EOF
+
+    for size in 16 32 48 64 128 256 512; do
+        if [ -f "${srcdir}/resources/icons/${size}x${size}.png" ]; then
+            install -Dm644 "${srcdir}/resources/icons/${size}x${size}.png" \
+                "${pkgdir}/usr/share/icons/hicolor/${size}x${size}/apps/fluxer.png"
+        fi
+    done
+}

fluxer/fluxer_desktop/packaging/aur/README.md

@@ -0,0 +1,24 @@
+# Fluxer AUR package
+
+PKGBUILD for the `fluxer-bin` AUR binary package. This installs pre-built binaries rather than building from source, since Electron apps are impractical to compile within the AUR build system.
+
+## Placeholders
+
+The `pkgver` and `sha256sums` fields are set to placeholder values. Update them before publishing:
+
+- Run `updpkgsums` to fetch and fill checksums automatically.
+- Alternatively, query the latest version from the API and update manually.
+
+## Testing locally
+
+```bash
+makepkg -si
+```
+
+## Fetching the latest version
+
+```bash
+curl -s https://api.fluxer.app/dl/desktop/stable/linux/x64/latest | jq
+```
+
+This returns a JSON object containing `version`, `pub_date`, and `files` with download URLs and SHA256 checksums for each format.

fluxer/fluxer_desktop/packaging/homebrew/README.md

@@ -0,0 +1,25 @@
+# Fluxer Homebrew cask
+
+Homebrew cask definition for installing Fluxer on macOS.
+
+## Placeholders
+
+The `version` and `sha256` fields are set to placeholder values. Update them before publishing or submitting to a tap.
+
+## Livecheck
+
+The cask includes a `livecheck` block that queries the Fluxer download API for the latest stable version. Homebrew's automated tooling uses this to detect new releases.
+
+## Testing locally
+
+```bash
+brew install --cask ./fluxer.rb
+```
+
+## Fetching the latest version
+
+```bash
+curl -s https://api.fluxer.app/dl/desktop/stable/darwin/arm64/latest | jq
+```
+
+This returns a JSON object containing `version`, `pub_date`, and `files` with download URLs and SHA256 checksums for each format.

fluxer/fluxer_desktop/packaging/homebrew/fluxer.rb

@@ -0,0 +1,37 @@
+cask "fluxer" do
+  arch arm: "arm64", intel: "x64"
+
+  version "PLACEHOLDER_VERSION"
+
+  on_arm do
+    sha256 "PLACEHOLDER_SHA256_ARM64"
+  end
+  on_intel do
+    sha256 "PLACEHOLDER_SHA256_X64"
+  end
+
+  url "https://api.fluxer.app/dl/desktop/stable/darwin/#{arch}/#{version}/dmg"
+  name "Fluxer"
+  desc "Instant messaging and VoIP application"
+  homepage "https://fluxer.app"
+
+  livecheck do
+    url "https://api.fluxer.app/dl/desktop/stable/darwin/arm64/latest"
+    strategy :json do |json|
+      json["version"]
+    end
+  end
+
+  auto_updates true
+  depends_on macos: ">= :catalina"
+
+  app "Fluxer.app"
+
+  zap trash: [
+    "~/Library/Application Support/Fluxer",
+    "~/Library/Caches/app.fluxer",
+    "~/Library/Caches/app.fluxer.ShipIt",
+    "~/Library/Preferences/app.fluxer.plist",
+    "~/Library/Saved Application State/app.fluxer.savedState",
+  ]
+end

fluxer/fluxer_desktop/packaging/linux/README.md

@@ -0,0 +1,6 @@
+# Fluxer Linux metadata
+These files are for Linux desktop integration and package managers/app stores.
+## Files
+- `app.fluxer.Fluxer.desktop` - XDG desktop entry for app launchers
+- `app.fluxer.Fluxer.metainfo.xml` - AppStream metadata for package manager and app store listings
+- `app.fluxer.Fluxer.svg` - Application icon

fluxer/fluxer_desktop/packaging/linux/app.fluxer.Fluxer.desktop

@@ -0,0 +1,9 @@
+[Desktop Entry]
+Name=Fluxer
+Comment=Instant messaging and VoIP application
+Exec=app.fluxer.Fluxer %U
+Terminal=false
+Type=Application
+Icon=app.fluxer.Fluxer
+Categories=Network;InstantMessaging;
+StartupWMClass=app.fluxer.Fluxer

fluxer/fluxer_desktop/packaging/linux/app.fluxer.Fluxer.metainfo.xml

@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<component type="desktop-application">
+    <id>app.fluxer.Fluxer</id>
+    <launchable type="desktop-id">app.fluxer.Fluxer.desktop</launchable>
+    <name>Fluxer</name>
+    <developer id="app.fluxer">
+        <name>Fluxer</name>
+    </developer>
+    <summary>Instant messaging and VoIP application</summary>
+    <metadata_license>CC0-1.0</metadata_license>
+    <project_license>AGPL-3.0-or-later</project_license>
+    <icon type="stock">app.fluxer.Fluxer</icon>
+    <description>
+        <p>Fluxer is a free and open-source instant messaging and voice-over-IP application. It provides text chat, voice calls, video calls, and screen sharing in a modern interface.</p>
+        <p>Features include:</p>
+        <ul>
+            <li>Text messaging with rich formatting and media support</li>
+            <li>Voice and video calls</li>
+            <li>Screen sharing</li>
+            <li>Communities with channels</li>
+            <li>Direct messages and group chats</li>
+            <li>Custom emoji and reactions</li>
+        </ul>
+    </description>
+    <categories>
+        <category>Network</category>
+        <category>InstantMessaging</category>
+    </categories>
+    <branding>
+        <color type="primary">#4641D9</color>
+    </branding>
+    <screenshots>
+        <screenshot type="default">
+            <caption>The main Fluxer window.</caption>
+            <image type="source" width="1920" height="1080">https://fluxerstatic.com/marketing/screenshots/desktop-1920w.avif</image>
+        </screenshot>
+    </screenshots>
+    <releases>
+        <release version="0.0.8" date="2026-02-16"/>
+    </releases>
+    <url type="bugtracker">https://github.com/fluxerapp/fluxer/issues</url>
+    <url type="homepage">https://fluxer.app</url>
+    <url type="donation">https://fluxer.app/donate</url>
+    <url type="vcs-browser">https://github.com/fluxerapp/fluxer.git</url>
+    <update_contact>fen@unix.dog</update_contact>
+    <content_rating type="oars-1.1">
+        <content_attribute id="social-chat">intense</content_attribute>
+        <content_attribute id="social-info">intense</content_attribute>
+        <content_attribute id="social-audio">intense</content_attribute>
+        <content_attribute id="social-contacts">intense</content_attribute>
+    </content_rating>
+    <requires>
+        <internet>always</internet>
+    </requires>
+    <supports>
+        <control>keyboard</control>
+        <control>pointing</control>
+    </supports>
+</component>

fluxer/fluxer_desktop/packaging/linux/app.fluxer.Fluxer.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 33.87 33.87"><g transform="translate(-32.28 -138.64)"><circle cx="49.21" cy="155.57" r="15.74" fill="none" stroke="currentColor" stroke-width=".26" opacity=".2" style="marker:none"/><path fill="#4641d9" d="M65.09 155.57a15.87 15.87 0 1 0-31.75 0 15.87 15.87 0 0 0 31.75 0z"/><path fill="#fff" d="M40.84 154.16c-.83 0-1.53-.68-1.42-1.5.1-.9.34-1.66.69-2.29a5 5 0 0 1 2.1-2.08 6.07 6.07 0 0 1 2.74-.65c.97 0 1.84.21 2.63.65a17 17 0 0 1 2.76 1.96c.7.6 1.27 1.02 1.67 1.27.42.25.88.37 1.4.37.81 0 1.46-.3 1.93-.88.23-.28.4-.62.5-1.02.24-.83.88-1.56 1.74-1.56.83 0 1.53.67 1.43 1.5-.1.9-.33 1.66-.7 2.29a4.98 4.98 0 0 1-2.1 2.08 6.07 6.07 0 0 1-5.39.04 14.4 14.4 0 0 1-2.75-2c-.68-.6-1.23-1.01-1.66-1.26a2.7 2.7 0 0 0-1.4-.38 2.43 2.43 0 0 0-2.47 1.91c-.2.83-.84 1.55-1.7 1.55zm0 8.56c-.83 0-1.53-.68-1.42-1.5.1-.9.34-1.66.69-2.29a5 5 0 0 1 2.1-2.08 6.07 6.07 0 0 1 2.74-.65c.97 0 1.84.22 2.63.65a17.5 17.5 0 0 1 2.76 1.96c.7.6 1.27 1.02 1.67 1.27.42.25.88.37 1.4.37.81 0 1.46-.3 1.93-.88.23-.28.4-.62.5-1.02.24-.83.88-1.56 1.74-1.56.83 0 1.53.67 1.43 1.5-.1.9-.33 1.66-.7 2.29a4.98 4.98 0 0 1-2.1 2.08 6.07 6.07 0 0 1-5.39.04 14.4 14.4 0 0 1-2.75-2c-.68-.6-1.23-1.01-1.66-1.26a2.7 2.7 0 0 0-1.4-.38 2.43 2.43 0 0 0-2.47 1.91c-.2.83-.84 1.55-1.7 1.55z"/></g></svg>

fluxer/fluxer_desktop/packaging/winget/Fluxer.Fluxer.installer.yaml

@@ -0,0 +1,19 @@
+PackageIdentifier: Fluxer.Fluxer
+PackageVersion: PLACEHOLDER_VERSION
+MinimumOSVersion: 10.0.17763.0
+InstallerType: nullsoft
+Scope: user
+InstallModes:
+  - interactive
+  - silent
+  - silentWithProgress
+UpgradeBehavior: install
+Installers:
+  - Architecture: x64
+    InstallerUrl: https://api.fluxer.app/dl/desktop/stable/win32/x64/PLACEHOLDER_VERSION/setup
+    InstallerSha256: PLACEHOLDER_SHA256_X64
+  - Architecture: arm64
+    InstallerUrl: https://api.fluxer.app/dl/desktop/stable/win32/arm64/PLACEHOLDER_VERSION/setup
+    InstallerSha256: PLACEHOLDER_SHA256_ARM64
+ManifestType: installer
+ManifestVersion: 1.6.0

fluxer/fluxer_desktop/packaging/winget/Fluxer.Fluxer.locale.en-US.yaml

@@ -0,0 +1,22 @@
+PackageIdentifier: Fluxer.Fluxer
+PackageVersion: PLACEHOLDER_VERSION
+PackageLocale: en-US
+Publisher: Fluxer Contributors
+PublisherUrl: https://fluxer.app
+PublisherSupportUrl: https://github.com/fluxerapp/fluxer/issues
+PackageName: Fluxer
+PackageUrl: https://fluxer.app
+License: AGPL-3.0-or-later
+LicenseUrl: https://github.com/fluxerapp/fluxer/blob/main/LICENCE
+ShortDescription: Instant messaging and VoIP application
+Description: Fluxer is a free and open-source instant messaging and voice-over-IP application. It provides text chat, voice calls, video calls, and screen sharing in a modern, privacy-respecting interface.
+Tags:
+  - chat
+  - messaging
+  - voip
+  - voice
+  - video
+  - communication
+  - open-source
+ManifestType: defaultLocale
+ManifestVersion: 1.6.0

fluxer/fluxer_desktop/packaging/winget/Fluxer.Fluxer.yaml

@@ -0,0 +1,5 @@
+PackageIdentifier: Fluxer.Fluxer
+PackageVersion: PLACEHOLDER_VERSION
+DefaultLocale: en-US
+ManifestType: version
+ManifestVersion: 1.6.0

fluxer/fluxer_desktop/packaging/winget/README.md

@@ -0,0 +1,33 @@
+# Fluxer Winget manifest
+
+Windows Package Manager (winget) manifest for installing Fluxer on Windows.
+
+## Placeholders
+
+The `PackageVersion` and `InstallerSha256` fields are set to placeholder values across all three manifest files. Update them before submitting to the winget-pkgs repository.
+
+## Manifest files
+
+- `Fluxer.Fluxer.yaml` -- version manifest (required)
+- `Fluxer.Fluxer.installer.yaml` -- installer details for x64 and arm64
+- `Fluxer.Fluxer.locale.en-US.yaml` -- default locale metadata
+
+## Validating
+
+```bash
+winget validate --manifest .
+```
+
+## Testing locally
+
+```bash
+winget install --manifest .
+```
+
+## Fetching the latest version
+
+```bash
+curl -s https://api.fluxer.app/dl/desktop/stable/win32/x64/latest | jq
+```
+
+This returns a JSON object containing `version`, `pub_date`, and `files` with download URLs and SHA256 checksums for each format.