diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
deleted file mode 100644
index e65661f..0000000
--- a/.github/workflows/release.yml
+++ /dev/null
@@ -1,95 +0,0 @@
-# A version tag builds the four packages, each on its own system, and publishes them.
-name: Release
-on:
-  push:
-    tags: ['v*']
-permissions:
-  contents: write
-jobs:
-  version:
-    runs-on: ubuntu-24.04
-    steps:
-      - uses: actions/checkout@v7
-      # The tag must name the version each build file carries.
-      - run: |
-          v=${GITHUB_REF_NAME#v}
-          grep -qF "project(omaphoto VERSION $v " CMakeLists.txt || { echo "CMakeLists.txt is not $v"; exit 1; }
-          grep -qxF "pkgver=$v" packaging/arch/PKGBUILD || { echo "PKGBUILD is not $v"; exit 1; }
-          grep -qF "version = \"$v\";" flake.nix || { echo "flake.nix is not $v"; exit 1; }
-  deb:
-    needs: version
-    runs-on: ubuntu-24.04
-    # One DEB per Ubuntu LTS: each names its own libraries.
-    strategy:
-      matrix:
-        include:
-          - codename: noble
-            base: ubuntu:24.04
-          - codename: resolute
-            base: ubuntu:26.04
-    steps:
-      - uses: actions/checkout@v7
-      # The dev image carries ONNX Runtime, its notices and the model.
-      - run: docker build -t omaphoto-dev --build-arg BASE=${{ matrix.base }} -f Dockerfile.dev .
-      - run: |
-          docker run --rm -u "$(id -u):$(id -g)" -e HOME=/tmp -v "$PWD:/src" -w /src omaphoto-dev sh -c '
-            cmake -S . -B build -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr \
-              -DOMAPHOTO_BUNDLE_ORT=ON -DOMAPHOTO_MODEL=/usr/local/share/omaphoto/u2net.onnx &&
-            cmake --build build --target omaphoto && cd build && cpack -G DEB'
-          mv build/omaphoto_*.deb omaphoto-${{ matrix.codename }}_amd64.deb
-      - uses: actions/upload-artifact@v7
-        with:
-          name: deb-${{ matrix.codename }}
-          path: omaphoto-${{ matrix.codename }}_amd64.deb
-  rpm:
-    needs: version
-    runs-on: ubuntu-24.04
-    # One RPM per Fedora release: each names its own LibRaw.
-    strategy:
-      matrix:
-        release: [43, 44]
-    steps:
-      - uses: actions/checkout@v7
-      - run: docker build -t omaphoto-fedora --build-arg RELEASE=${{ matrix.release }} scripts/distro/fedora
-      - run: |
-          docker run --rm -u "$(id -u):$(id -g)" -e HOME=/tmp -v "$PWD:/src" -w /src omaphoto-fedora sh -c '
-            cmake -S . -B build -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr \
-              -DOMAPHOTO_BUNDLE_ORT=ON -DOMAPHOTO_MODEL=/usr/local/share/omaphoto/u2net.onnx &&
-            cmake --build build --target omaphoto && cd build && cpack -G RPM'
-          mv build/omaphoto-*.x86_64.rpm omaphoto-fc${{ matrix.release }}.x86_64.rpm
-      - uses: actions/upload-artifact@v7
-        with:
-          name: rpm-fc${{ matrix.release }}
-          path: omaphoto-fc${{ matrix.release }}.x86_64.rpm
-  arch:
-    needs: version
-    runs-on: ubuntu-24.04
-    steps:
-      - uses: actions/checkout@v7
-      - run: docker build -t omaphoto-arch scripts/distro/arch
-      # makepkg refuses root; a user of the runner's id builds.
-      - run: |
-          docker run --rm -v "$PWD:/src" omaphoto-arch sh -c "
-            useradd -u $(id -u) builder && chown -R builder /src &&
-            su builder -c 'cd /src/packaging/arch && makepkg -f'"
-          mv packaging/arch/omaphoto-[0-9]*-x86_64.pkg.tar.zst omaphoto-x86_64.pkg.tar.zst
-      - uses: actions/upload-artifact@v7
-        with:
-          name: arch
-          path: omaphoto-x86_64.pkg.tar.zst
-  publish:
-    needs: [deb, rpm, arch]
-    runs-on: ubuntu-24.04
-    steps:
-      - uses: actions/checkout@v7
-      - uses: actions/download-artifact@v8
-        with:
-          merge-multiple: true
-          path: packages
-      - working-directory: packages
-        run: sha256sum omaphoto-noble_amd64.deb omaphoto-resolute_amd64.deb omaphoto-fc43.x86_64.rpm omaphoto-fc44.x86_64.rpm omaphoto-x86_64.pkg.tar.zst > SHA256SUMS
-      - env:
-          GH_TOKEN: ${{ github.token }}
-        run: |
-          gh release create "$GITHUB_REF_NAME" packages/* --title "OmaPhoto ${GITHUB_REF_NAME#v}" \
-            --notes "Install with the script for your system: see the README's Install section."
diff --git a/.gitignore b/.gitignore
index 809ae35..e828a54 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,7 @@
 /packaging/arch/u2net.onnx
 
 /Compositor-Ref/
+/build-appimage/
+/AppDir/
+/*.AppImage
+/release/
diff --git a/AGENTS.md b/AGENTS.md
index d5b93b6..bd6f8f3 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -15,7 +15,7 @@ To make or change an image in a `.comp` project, the source is not needed: read
 - The repository root: the app. C++20, Qt 6 Widgets (floor Qt 6.4), CMake, Qt Test. CPU raster only: QPainter plus the C kernels in `kernels/`, copied unchanged from Compositor's `Compositor/Rendering/*.c` and compiled in place.
 - `packaging/`: the desktop entry, MIME type, icons (Compositor's app icon) and the Arch `PKGBUILD`; `flake.nix` at the root for NixOS.
 - `scripts/install/`: one install script per distribution family, each fetching the latest release's package.
-- `.github/workflows/release.yml`: a `v*` tag builds the DEBs, the RPMs and the Arch package and publishes them.
+- `scripts/release.sh`: builds a tag's DEBs, RPMs, Arch package and AppImage in Docker and publishes them as a release on the project's Gitea, https://git.zacharyzhang.com/ZacharyZhang-NY/OmaPhoto (the GitHub repository is gone; GitHub suspended the account in 2026-10).
 - `docs/acceptance.md`: the MVP acceptance table, its screenshots in `docs/acceptance/`.
 - `TASKS.md`: ordered task list and progress truth. Its entries before 11.4b speak of the port's old home, `linux/` inside Compositor's repository.
 
@@ -202,7 +202,7 @@ Deliberate name breaks: `MetalBrushCoverage` → `BrushCoverage`, `MetalLayerEff
 - Omarchy theme: `src/UI/OmarchyTheme` reads `~/.local/state/omarchy/current/theme/colors.toml` (Omarchy 4.x: flat `key = "value"` lines, `mode` dark or light, the twenty-two stock themes' keys required, `orange` optional and `yellow` its stand-in) into `OmarchyColors`, applies them as the application palette (Window and Text from `background` and `foreground`, Base from `darker_background`, Button from `lighter_background`, Highlight and Link from `accent` with the background as highlighted text, PlaceholderText from `dark_foreground`, BrightText from `orange` or `yellow`, Mid from `muted`, the disabled roles from `muted`) and sets the Fusion style, which follows a palette on every desktop where a platform style does not; no stylesheet is needed. Keys and values read in double or single quotes. A missing key, or a recognised key whose value is bare or half-quoted or no `#rrggbb`, refuses the file with the key's name; a file that exists but cannot be opened, or sits behind a folder that cannot be searched (`stat` fails other than `ENOENT`), is refused too; either way the app keeps the palette it has and logs a warning, where an absent file means the built-in dark, Swift's grays, installed before the first load. `omarchy-theme-set` removes `current/theme`, moves `next-theme` in and writes `theme.name`, so the watcher holds `current/`, `current/theme` and the file, adds them back after each load (a removed path leaves a `QFileSystemWatcher`) and renews the file's watch every load (it follows the inode, which an atomic replacement swaps), watches the nearest ancestor the watcher accepts while `current/` is missing or barred, letting it go once the directory is watched, and loads once 100 ms after the last event. A read that stops short (an error, or fewer bytes than the file holds) is refused like a malformed file. Each load logs the theme's name and mode on `omaphoto.app`. `main` makes the theme before the window. Widgets take colours from the palette, never from literals; the canvas keeps Swift's document grays. The UI font stays Qt's default: `omarchy font current` is not followed.
 - No updater. Distro packages own updates.
 - Custom cursors (`QCursor` pixmaps) come out garbled on the hardware cursor path with NVIDIA and Hyprland at a fractional scale; theme cursors render correctly (issue #9, hyprwm/Hyprland#16413). README gives the software-cursor setting; the app keeps its cursors and does not guess at drivers (the user's decision, 13.1).
-- Distribution (11.4b): releases live on GitHub under fixed asset names (`omaphoto-noble_amd64.deb`, `omaphoto-resolute_amd64.deb`, `omaphoto-fc43.x86_64.rpm`, `omaphoto-fc44.x86_64.rpm`, `omaphoto-x86_64.pkg.tar.zst`; 1.0.0 had one DEB, `omaphoto_amd64.deb`, and 1.0.0 to 1.2.3 one RPM, `omaphoto.x86_64.rpm`) with `SHA256SUMS`, so `releases/latest/download/<name>` always reaches the newest. `scripts/install/arch.sh` reads `/etc/os-release` (`ID` or `ID_LIKE`; Omarchy says `ID_LIKE=arch`), `fedora.sh` its `ID` or `ID_LIKE` and `VERSION_ID`, taking the RPM of release 43 or 44 and refusing any other, since each names its release's LibRaw (`libraw_r.so.23` on 43, `.25` on 44; found in 12.16, when 1.2.3's single RPM from Fedora 43 would not install on 44), and `ubuntu.sh` its `UBUNTU_CODENAME`, which Ubuntu's derivatives set to their base: each DEB names its release's Qt libraries (24.04's carry a `t64` suffix that 26.04's drop, and Debian 13 has neither), so the release carries one DEB per LTS, built on it (`Dockerfile.dev` takes the base as `BASE`), and the script takes the one whose codename matches, `noble` or `resolute`, refusing any other. Each refuses another system or another machine than x86_64, verify the package against the sums and install it with apt, dnf or pacman under sudo, so the package manager resolves dependencies; apt reads the file as its own user, so the download folder is opened to it. Fedora's script names RPM Fusion's `libheif-freeworld` when it is missing, since Fedora's libheif decodes no HEVC, and adds no repository itself. `nixos.sh` installs the flake at the newest release's tag, which GitHub's `releases/latest` redirect names, into the user's profile (`nix profile install`, the name every Nix still takes), so no user builds unreleased work from `main`. The README runs each script after downloading it, so the package manager's questions read the terminal and fish runs it too. `release.yml` builds each package with the command the distro checks use, the DEBs on the dev image over each base, the RPMs on Fedora 43 and 44 (`scripts/distro/fedora/Dockerfile` takes the release as `RELEASE`, 43 by default), the Arch package through `makepkg` as a user; the version is CMake's `project` version, the PKGBUILD's and the flake's, kept equal by hand, and the workflow's first job refuses a tag that names another.
+- Distribution (11.4b): releases live on Gitea (git.zacharyzhang.com) under fixed asset names (`omaphoto-noble_amd64.deb`, `omaphoto-resolute_amd64.deb`, `omaphoto-fc43.x86_64.rpm`, `omaphoto-fc44.x86_64.rpm`, `omaphoto-x86_64.pkg.tar.zst`, `omaphoto-x86_64.AppImage` since 1.4.5; 1.0.0 had one DEB, `omaphoto_amd64.deb`, and 1.0.0 to 1.2.3 one RPM, `omaphoto.x86_64.rpm`) with `SHA256SUMS`. Gitea has no `releases/latest/download`, so each script asks the API for the newest release's tag (`/api/v1/repos/ZacharyZhang-NY/OmaPhoto/releases/latest`) and downloads from `releases/download/<tag>/<name>`. `scripts/install/arch.sh` reads `/etc/os-release` (`ID` or `ID_LIKE`; Omarchy says `ID_LIKE=arch`), `fedora.sh` its `ID` or `ID_LIKE` and `VERSION_ID`, taking the RPM of release 43 or 44 and refusing any other, since each names its release's LibRaw (`libraw_r.so.23` on 43, `.25` on 44; found in 12.16, when 1.2.3's single RPM from Fedora 43 would not install on 44), and `ubuntu.sh` its `UBUNTU_CODENAME`, which Ubuntu's derivatives set to their base: each DEB names its release's Qt libraries (24.04's carry a `t64` suffix that 26.04's drop, and Debian 13 has neither), so the release carries one DEB per LTS, built on it (`Dockerfile.dev` takes the base as `BASE`), and the script takes the one whose codename matches, `noble` or `resolute`, refusing any other. Each refuses another system or another machine than x86_64, verify the package against the sums and install it with apt, dnf or pacman under sudo, so the package manager resolves dependencies; apt reads the file as its own user, so the download folder is opened to it. Fedora's script names RPM Fusion's `libheif-freeworld` when it is missing, since Fedora's libheif decodes no HEVC, and adds no repository itself. `nixos.sh` installs the flake at the newest release's tag (`git+https://…?ref=refs/tags/<tag>`) into the user's profile (`nix profile install`, the name every Nix still takes), so no user builds unreleased work from `main`. The README runs each script after downloading it, so the package manager's questions read the terminal and fish runs it too. `scripts/release.sh vX.Y.Z` (with `GITEA_TOKEN` set, the tag already pushed) builds each package from `git archive` of the tag with the command the distro checks use, the DEBs on the dev image over each base, the RPMs on Fedora 43 and 44 (`scripts/distro/fedora/Dockerfile` takes the release as `RELEASE`, 43 by default), the Arch package through `makepkg` as a user, the AppImage on the noble dev image (`scripts/distro/appimage`, linuxdeploy and its Qt plugin pinned by checksum; `scripts/appimage.sh` adds Qt's Wayland shell, decoration and graphics plugins and libheif's HEVC plugin, and `packaging/appimage/omaphoto.sh`, an AppRun hook, puts the AppImage's `usr/share` first on `XDG_DATA_DIRS` so the model is found, and sets `LIBHEIF_PLUGIN_PATH`), then writes `SHA256SUMS`, creates the release and uploads every file; the version is CMake's `project` version, the PKGBUILD's and the flake's, kept equal by hand, and the script refuses a tag that names another.
 - Remove Background runs an open-licensed model on ONNX Runtime.
 - A `.comp` project is a directory on Linux; its layout matches the macOS package.
 - Shortcuts map ⌘ to Ctrl and ⌥ to Alt.
diff --git a/CMakeLists.txt b/CMakeLists.txt
index bd9fa02..5eaa144 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -293,7 +293,7 @@ set(CPACK_PACKAGE_NAME omaphoto)
 set(CPACK_PACKAGE_VENDOR "ZacharyZhang-NY")
 set(CPACK_PACKAGE_CONTACT "ZacharyZhang-NY")
 set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "Layered image editing for Linux, a port of Compositor")
-set(CPACK_PACKAGE_HOMEPAGE_URL "https://github.com/ZacharyZhang-NY/OmaPhoto")
+set(CPACK_PACKAGE_HOMEPAGE_URL "https://git.zacharyzhang.com/ZacharyZhang-NY/OmaPhoto")
 set(CPACK_PACKAGING_INSTALL_PREFIX /usr)
 set(CPACK_DEBIAN_FILE_NAME DEB-DEFAULT)
 set(CPACK_DEBIAN_PACKAGE_SECTION graphics)
diff --git a/README.md b/README.md
index 9149b92..718c97f 100644
--- a/README.md
+++ b/README.md
@@ -35,13 +35,13 @@ Each script installs the newest release. The Arch, Ubuntu and Fedora scripts dow
 Arch and Omarchy:
 
 ```sh
-curl -fsSLO https://raw.githubusercontent.com/ZacharyZhang-NY/OmaPhoto/main/scripts/install/arch.sh && bash arch.sh
+curl -fsSLO https://git.zacharyzhang.com/ZacharyZhang-NY/OmaPhoto/raw/branch/main/scripts/install/arch.sh && bash arch.sh
 ```
 
 Ubuntu 24.04 or 26.04 LTS and systems built on them (Linux Mint 22, Pop!_OS 24.04):
 
 ```sh
-curl -fsSLO https://raw.githubusercontent.com/ZacharyZhang-NY/OmaPhoto/main/scripts/install/ubuntu.sh && bash ubuntu.sh
+curl -fsSLO https://git.zacharyzhang.com/ZacharyZhang-NY/OmaPhoto/raw/branch/main/scripts/install/ubuntu.sh && bash ubuntu.sh
 ```
 
 Each DEB names its Ubuntu release's libraries, so other Ubuntu releases and Debian build from source (below).
@@ -49,7 +49,7 @@ Each DEB names its Ubuntu release's libraries, so other Ubuntu releases and Debi
 Fedora 43 or 44:
 
 ```sh
-curl -fsSLO https://raw.githubusercontent.com/ZacharyZhang-NY/OmaPhoto/main/scripts/install/fedora.sh && bash fedora.sh
+curl -fsSLO https://git.zacharyzhang.com/ZacharyZhang-NY/OmaPhoto/raw/branch/main/scripts/install/fedora.sh && bash fedora.sh
 ```
 
 Fedora's own libheif decodes no HEVC. For HEIC import, add [RPM Fusion](https://rpmfusion.org/Configuration) and install `libheif-freeworld`; the script reminds you.
@@ -57,12 +57,12 @@ Fedora's own libheif decodes no HEVC. For HEIC import, add [RPM Fusion](https://
 NixOS installs the release's flake into your profile:
 
 ```sh
-curl -fsSLO https://raw.githubusercontent.com/ZacharyZhang-NY/OmaPhoto/main/scripts/install/nixos.sh && bash nixos.sh
+curl -fsSLO https://git.zacharyzhang.com/ZacharyZhang-NY/OmaPhoto/raw/branch/main/scripts/install/nixos.sh && bash nixos.sh
 ```
 
-Or add `github:ZacharyZhang-NY/OmaPhoto/<tag>`, a release tag, as a flake input and put its `packages.x86_64-linux.default` in your configuration.
+Or add `git+https://git.zacharyzhang.com/ZacharyZhang-NY/OmaPhoto?ref=refs/tags/<tag>`, a release tag, as a flake input and put its `packages.x86_64-linux.default` in your configuration.
 
-The packages themselves sit on the [releases page](https://github.com/ZacharyZhang-NY/OmaPhoto/releases).
+The packages themselves sit on the [releases page](https://git.zacharyzhang.com/ZacharyZhang-NY/OmaPhoto/releases). Any other x86_64 system can run the AppImage there, `omaphoto-x86_64.AppImage`: download it, `chmod +x` it and start it.
 
 ### Garbled cursors on NVIDIA with Hyprland
 
diff --git a/TASKS.md b/TASKS.md
index 3cd0491..8bce1fb 100644
--- a/TASKS.md
+++ b/TASKS.md
@@ -503,7 +503,8 @@ Reviews for this section ran on codex `gpt-6.1-sol` at `max` (agent `codex-sol`)
   - 13.19i review: round 1 PASS (the Qt behaviour probed on 6.4.2, 6.10.2 and 6.11.2, six mutants caught).
   - 13.19j work: `versionupdate.md` gains 13.19i's blend menu fix; `v1.4.5` tagged on main and pushed; the workflow's run is checked below.
   - [ ] 13.19j Tag `v1.4.5`; the release workflow publishes every package.
-  - [ ] 13.19k Live installs from GitHub in fresh containers.
+  - 2026-10-11: GitHub suspended the account; the project moved to Gitea (git.zacharyzhang.com), the workflow became `scripts/release.sh`, and releases gain an AppImage.
+  - [ ] 13.19k Live installs from Gitea in fresh containers.
   - [ ] 13.19l The acceptance checklist.
 
 ## Skills by phase
diff --git a/docs/acceptance.md b/docs/acceptance.md
index da6e841..8cd777e 100644
--- a/docs/acceptance.md
+++ b/docs/acceptance.md
@@ -32,7 +32,7 @@ The screenshots come from Qt's offscreen platform, so floating panels appear wit
 | Reload a project changed on disk | With unsaved edits open, another program renames a layer on disk. The app's alert asks, Revert is chosen, and the saved state shows with the new name. | [15](acceptance/15-shortcuts.png) | `ExternalChangeTests` | pass |
 | Follows the Omarchy theme | Starts in the built-in dark. A Catppuccin Latte `colors.toml` written while the app runs retints the window. | [16](acceptance/16-omarchy-light.png) | `OmarchyThemeTests` | pass |
 | Builds and tests on each system | The full suite, 334 binaries, passes on Ubuntu 24.04 (Qt 6.4.2), Ubuntu 26.04 (6.10.2), Arch (6.11.2), Fedora 43 and 44, and NixOS (6.11.2). Warnings count as errors. | — | `scripts/distro-check.sh` | pass |
-| Packages and install scripts | Each install script runs from GitHub in a fresh container. On Ubuntu 24.04 and 26.04, Fedora 43 and 44 and Arch, it checks its package against `SHA256SUMS`, installs it and starts 1.4.5. On NixOS, `nixos.sh` resolves `v1.4.5`, builds its flake and starts 1.4.5. Debian 13 is refused, as intended. | — | `DesktopIntegrationTests`, `.github/workflows/release.yml` | pending |
+| Packages and install scripts | Each install script runs from Gitea in a fresh container. On Ubuntu 24.04 and 26.04, Fedora 43 and 44 and Arch, it checks its package against `SHA256SUMS`, installs it and starts 1.4.5. On NixOS, `nixos.sh` resolves `v1.4.5`, builds its flake and starts 1.4.5. Debian 13 is refused, as intended. | — | `DesktopIntegrationTests`, `scripts/release.sh` | pending |
 
 ## New in 1.4.5
 
diff --git a/docs/writing-comp-files.md b/docs/writing-comp-files.md
index 3f0632f..e1e621e 100644
--- a/docs/writing-comp-files.md
+++ b/docs/writing-comp-files.md
@@ -7,7 +7,7 @@ An OmaPhoto project (`.comp`) is a folder of PNG layer images plus a `manifest.j
 1. Open a project in OmaPhoto 1.3 or later (save a new canvas somewhere, e.g. `~/Pictures/demo.comp`), and keep it open.
 2. Ask an AI agent that can edit files on your computer (Claude Code, Codex and the like):
 
-   > Read docs/writing-comp-files.md in github.com/ZacharyZhang-NY/OmaPhoto, then design a moody night scene in ~/Pictures/demo.comp. Work in steps, one or two layers at a time.
+   > Read docs/writing-comp-files.md in git.zacharyzhang.com/ZacharyZhang-NY/OmaPhoto, then design a moody night scene in ~/Pictures/demo.comp. Work in steps, one or two layers at a time.
 
 3. Watch the canvas. Each time the agent writes the project, OmaPhoto reloads it, usually within half a second.
 
diff --git a/packaging/appimage/omaphoto.sh b/packaging/appimage/omaphoto.sh
new file mode 100644
index 0000000..af34df5
--- /dev/null
+++ b/packaging/appimage/omaphoto.sh
@@ -0,0 +1,3 @@
+# The AppImage's model, MIME data and HEVC decoder come first.
+export XDG_DATA_DIRS="$APPDIR/usr/share:${XDG_DATA_DIRS:-/usr/local/share:/usr/share}"
+export LIBHEIF_PLUGIN_PATH="$APPDIR/usr/lib/libheif"
diff --git a/packaging/arch/PKGBUILD b/packaging/arch/PKGBUILD
index f19ea8d..0f909bc 100644
--- a/packaging/arch/PKGBUILD
+++ b/packaging/arch/PKGBUILD
@@ -4,7 +4,7 @@ pkgver=1.4.5
 pkgrel=1
 pkgdesc='Layered image editing for Linux, a port of Compositor'
 arch=('x86_64')
-url='https://github.com/ZacharyZhang-NY/OmaPhoto'
+url='https://git.zacharyzhang.com/ZacharyZhang-NY/OmaPhoto'
 license=('MIT')
 depends=('qt6-base' 'qt6-svg' 'qt6-imageformats' 'libheif' 'libraw' 'libde265' 'fontconfig' 'hicolor-icon-theme' 'shared-mime-info')
 makedepends=('cmake' 'ninja')
diff --git a/scripts/appimage.sh b/scripts/appimage.sh
new file mode 100755
index 0000000..673edf6
--- /dev/null
+++ b/scripts/appimage.sh
@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+# Builds omaphoto-x86_64.AppImage inside the AppImage image.
+set -euo pipefail
+id=io.github.ZacharyZhang_NY.OmaPhoto
+cmake -S . -B build-appimage -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr \
+    -DOMAPHOTO_BUNDLE_ORT=ON -DOMAPHOTO_MODEL=/usr/local/share/omaphoto/u2net.onnx
+cmake --build build-appimage --target omaphoto
+rm -rf AppDir
+DESTDIR="$PWD/AppDir" cmake --install build-appimage
+# libheif loads its HEVC decoder as a plugin.
+mkdir -p AppDir/usr/lib/libheif AppDir/apprun-hooks
+cp /usr/lib/x86_64-linux-gnu/libheif/plugins/libheif-libde265.so AppDir/usr/lib/libheif/
+cp packaging/appimage/omaphoto.sh AppDir/apprun-hooks/
+# Qt's Wayland client needs its shell and decoration plugins.
+qtplugins=/usr/lib/x86_64-linux-gnu/qt6/plugins
+mkdir -p AppDir/usr/plugins
+for dir in wayland-shell-integration wayland-decoration-client wayland-graphics-integration-client; do
+    cp -r "$qtplugins/$dir" AppDir/usr/plugins/
+done
+export QMAKE=/usr/lib/qt6/bin/qmake6 APPIMAGE_EXTRACT_AND_RUN=1 OUTPUT=omaphoto-x86_64.AppImage
+export EXTRA_PLATFORM_PLUGINS="libqwayland-egl.so;libqwayland-generic.so" EXTRA_QT_MODULES=svg
+linuxdeploy --appdir AppDir --plugin qt --output appimage \
+    --desktop-file "AppDir/usr/share/applications/$id.desktop" \
+    --icon-file "AppDir/usr/share/icons/hicolor/512x512/apps/$id.png" \
+    --deploy-deps-only AppDir/usr/lib/libheif \
+    --deploy-deps-only AppDir/usr/plugins/wayland-shell-integration \
+    --deploy-deps-only AppDir/usr/plugins/wayland-decoration-client \
+    --deploy-deps-only AppDir/usr/plugins/wayland-graphics-integration-client
diff --git a/scripts/distro/appimage/Dockerfile b/scripts/distro/appimage/Dockerfile
new file mode 100644
index 0000000..305fbe9
--- /dev/null
+++ b/scripts/distro/appimage/Dockerfile
@@ -0,0 +1,10 @@
+# The dev image plus linuxdeploy, pinned by checksum.
+ARG DEV=omaphoto-dev
+FROM $DEV
+RUN curl -fsSL -o /usr/local/bin/linuxdeploy \
+        https://github.com/linuxdeploy/linuxdeploy/releases/download/1-alpha-20251107-1/linuxdeploy-x86_64.AppImage \
+    && curl -fsSL -o /usr/local/bin/linuxdeploy-plugin-qt \
+        https://github.com/linuxdeploy/linuxdeploy-plugin-qt/releases/download/1-alpha-20250213-1/linuxdeploy-plugin-qt-x86_64.AppImage \
+    && echo "c20cd71e3a4e3b80c3483cef793cda3f4e990aca14014d23c544ca3ce1270b4d  /usr/local/bin/linuxdeploy" | sha256sum -c - \
+    && echo "15106be885c1c48a021198e7e1e9a48ce9d02a86dd0a1848f00bdbf3c1c92724  /usr/local/bin/linuxdeploy-plugin-qt" | sha256sum -c - \
+    && chmod +x /usr/local/bin/linuxdeploy /usr/local/bin/linuxdeploy-plugin-qt
diff --git a/scripts/install/arch.sh b/scripts/install/arch.sh
index 4ef3097..85362f3 100755
--- a/scripts/install/arch.sh
+++ b/scripts/install/arch.sh
@@ -1,7 +1,14 @@
 #!/usr/bin/env bash
-# Installs OmaPhoto's latest package on Arch and Omarchy.
+# Installs OmaPhoto's newest package on Arch and Omarchy.
 set -euo pipefail
-base=https://github.com/ZacharyZhang-NY/OmaPhoto/releases/latest/download
+repo=https://git.zacharyzhang.com/ZacharyZhang-NY/OmaPhoto
+# The newest release's tag, from Gitea's API.
+tag=$(curl -fsSL --proto '=https' https://git.zacharyzhang.com/api/v1/repos/ZacharyZhang-NY/OmaPhoto/releases/latest | grep -o '"tag_name":"v[^"]*"' | cut -d'"' -f4) || tag=
+if [ -z "$tag" ]; then
+    echo "No release found at $repo/releases." >&2
+    exit 1
+fi
+base=$repo/releases/download/$tag
 package=omaphoto-x86_64.pkg.tar.zst
 . /etc/os-release
 case " ${ID:-} ${ID_LIKE:-} " in
diff --git a/scripts/install/fedora.sh b/scripts/install/fedora.sh
index f45c2f3..e510be4 100755
--- a/scripts/install/fedora.sh
+++ b/scripts/install/fedora.sh
@@ -1,7 +1,14 @@
 #!/usr/bin/env bash
-# Installs OmaPhoto's latest RPM on Fedora 43 or 44.
+# Installs OmaPhoto's newest RPM on Fedora 43 or 44.
 set -euo pipefail
-base=https://github.com/ZacharyZhang-NY/OmaPhoto/releases/latest/download
+repo=https://git.zacharyzhang.com/ZacharyZhang-NY/OmaPhoto
+# The newest release's tag, from Gitea's API.
+tag=$(curl -fsSL --proto '=https' https://git.zacharyzhang.com/api/v1/repos/ZacharyZhang-NY/OmaPhoto/releases/latest | grep -o '"tag_name":"v[^"]*"' | cut -d'"' -f4) || tag=
+if [ -z "$tag" ]; then
+    echo "No release found at $repo/releases." >&2
+    exit 1
+fi
+base=$repo/releases/download/$tag
 . /etc/os-release
 release=
 case " ${ID:-} ${ID_LIKE:-} " in
diff --git a/scripts/install/nixos.sh b/scripts/install/nixos.sh
index 674c893..92710cb 100755
--- a/scripts/install/nixos.sh
+++ b/scripts/install/nixos.sh
@@ -9,14 +9,11 @@ if [ "$(uname -m)" != x86_64 ]; then
     echo "OmaPhoto's flake builds for x86_64 alone." >&2
     exit 1
 fi
-# The newest release's tag, as GitHub redirects to it.
-latest=$(curl -fsSLI --proto '=https' -o /dev/null -w '%{url_effective}' https://github.com/ZacharyZhang-NY/OmaPhoto/releases/latest)
-tag=${latest##*/}
-case "$tag" in
-v[0-9]*) ;;
-*)
-    echo "No release found at $latest." >&2
+repo=https://git.zacharyzhang.com/ZacharyZhang-NY/OmaPhoto
+# The newest release's tag, from Gitea's API.
+tag=$(curl -fsSL --proto '=https' https://git.zacharyzhang.com/api/v1/repos/ZacharyZhang-NY/OmaPhoto/releases/latest | grep -o '"tag_name":"v[^"]*"' | cut -d'"' -f4) || tag=
+if [ -z "$tag" ]; then
+    echo "No release found at $repo/releases." >&2
     exit 1
-    ;;
-esac
-nix --extra-experimental-features "nix-command flakes" profile install "github:ZacharyZhang-NY/OmaPhoto/$tag"
+fi
+nix --extra-experimental-features "nix-command flakes" profile install "git+$repo?ref=refs/tags/$tag"
diff --git a/scripts/install/ubuntu.sh b/scripts/install/ubuntu.sh
index e412939..4c3c72f 100755
--- a/scripts/install/ubuntu.sh
+++ b/scripts/install/ubuntu.sh
@@ -1,7 +1,14 @@
 #!/usr/bin/env bash
-# Installs OmaPhoto's latest DEB on Ubuntu LTS and derivatives.
+# Installs OmaPhoto's newest DEB on Ubuntu LTS and derivatives.
 set -euo pipefail
-base=https://github.com/ZacharyZhang-NY/OmaPhoto/releases/latest/download
+repo=https://git.zacharyzhang.com/ZacharyZhang-NY/OmaPhoto
+# The newest release's tag, from Gitea's API.
+tag=$(curl -fsSL --proto '=https' https://git.zacharyzhang.com/api/v1/repos/ZacharyZhang-NY/OmaPhoto/releases/latest | grep -o '"tag_name":"v[^"]*"' | cut -d'"' -f4) || tag=
+if [ -z "$tag" ]; then
+    echo "No release found at $repo/releases." >&2
+    exit 1
+fi
+base=$repo/releases/download/$tag
 . /etc/os-release
 # Each DEB names its LTS's libraries; derivatives name their base.
 case "${UBUNTU_CODENAME:-}" in
diff --git a/scripts/release.sh b/scripts/release.sh
new file mode 100755
index 0000000..a2f6837
--- /dev/null
+++ b/scripts/release.sh
@@ -0,0 +1,76 @@
+#!/usr/bin/env bash
+# Builds a tag's packages and publishes a Gitea release.
+set -euo pipefail
+tag=${1:?"usage: GITEA_TOKEN=... scripts/release.sh vX.Y.Z"}
+token=${GITEA_TOKEN:?"GITEA_TOKEN must hold a Gitea access token"}
+api=https://git.zacharyzhang.com/api/v1/repos/ZacharyZhang-NY/OmaPhoto
+repo=$(cd "$(dirname "$0")/.." && pwd)
+cd "$repo"
+version=${tag#v}
+# The tag must name the version each build file carries.
+if ! git show "$tag:CMakeLists.txt" | grep -qF "project(omaphoto VERSION $version "; then
+    echo "CMakeLists.txt at $tag is not $version" >&2
+    exit 1
+fi
+if ! git show "$tag:packaging/arch/PKGBUILD" | grep -qxF "pkgver=$version"; then
+    echo "The PKGBUILD at $tag is not $version" >&2
+    exit 1
+fi
+if ! git show "$tag:flake.nix" | grep -qF "version = \"$version\";"; then
+    echo "flake.nix at $tag is not $version" >&2
+    exit 1
+fi
+out=$repo/release/$tag
+rm -rf "$out"
+mkdir -p "$out"
+work=$(mktemp -d)
+trap 'rm -rf "$work"' EXIT
+user="$(id -u):$(id -g)"
+configure="cmake -S . -B build -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr -DOMAPHOTO_BUNDLE_ORT=ON -DOMAPHOTO_MODEL=/usr/local/share/omaphoto/u2net.onnx && cmake --build build --target omaphoto"
+# Each package builds from a fresh copy of the tag.
+fresh() {
+    rm -rf "$work/src"
+    mkdir "$work/src"
+    git archive "$tag" | tar -x -C "$work/src"
+}
+build() {
+    docker run --rm -u "$user" -e HOME=/tmp -v "$work/src:/src" -w /src "$1" sh -c "$2"
+}
+# One DEB per Ubuntu LTS: each names its own libraries.
+docker build -t omaphoto-dev --build-arg BASE=ubuntu:24.04 -f Dockerfile.dev .
+docker build -t omaphoto-resolute --build-arg BASE=ubuntu:26.04 -f Dockerfile.dev .
+for pair in noble:omaphoto-dev resolute:omaphoto-resolute; do
+    fresh
+    build "${pair#*:}" "$configure && cd build && cpack -G DEB"
+    mv "$work"/src/build/omaphoto_*.deb "$out/omaphoto-${pair%%:*}_amd64.deb"
+done
+# One RPM per Fedora release: each names its own LibRaw.
+docker build -t omaphoto-fedora --build-arg RELEASE=43 scripts/distro/fedora
+docker build -t omaphoto-fedora44 --build-arg RELEASE=44 scripts/distro/fedora
+for pair in 43:omaphoto-fedora 44:omaphoto-fedora44; do
+    fresh
+    build "${pair#*:}" "$configure && cd build && cpack -G RPM"
+    mv "$work"/src/build/omaphoto-*.x86_64.rpm "$out/omaphoto-fc${pair%%:*}.x86_64.rpm"
+done
+# makepkg refuses root; a user of our id builds.
+docker build --pull -t omaphoto-arch scripts/distro/arch
+fresh
+docker run --rm -v "$work/src:/src" omaphoto-arch sh -c "useradd -u $(id -u) builder && chown -R builder /src && su builder -c 'cd /src/packaging/arch && makepkg -f'"
+mv "$work"/src/packaging/arch/omaphoto-[0-9]*-x86_64.pkg.tar.zst "$out/omaphoto-x86_64.pkg.tar.zst"
+# The AppImage builds on Ubuntu 24.04, the oldest glibc here.
+docker build -t omaphoto-appimage --build-arg DEV=omaphoto-dev scripts/distro/appimage
+fresh
+build omaphoto-appimage scripts/appimage.sh
+mv "$work/src/omaphoto-x86_64.AppImage" "$out/"
+names="omaphoto-noble_amd64.deb omaphoto-resolute_amd64.deb omaphoto-fc43.x86_64.rpm omaphoto-fc44.x86_64.rpm omaphoto-x86_64.pkg.tar.zst omaphoto-x86_64.AppImage"
+(cd "$out" && sha256sum $names > SHA256SUMS)
+# The tag must already be on Gitea.
+notes="Install with the script for your system, or run the AppImage: see the README's Install section."
+body=$(printf '{"tag_name":"%s","name":"OmaPhoto %s","body":"%s"}' "$tag" "$version" "$notes")
+release=$(curl -fsS -X POST -H "Authorization: token $token" -H "Content-Type: application/json" -d "$body" "$api/releases")
+id=$(echo "$release" | grep -o '"id":[0-9]*' | head -1 | cut -d: -f2)
+for name in $names SHA256SUMS; do
+    echo "Uploading $name"
+    curl -fsS -o /dev/null -X POST -H "Authorization: token $token" -F "attachment=@$out/$name" "$api/releases/$id/assets?name=$name"
+done
+echo "Published https://git.zacharyzhang.com/ZacharyZhang-NY/OmaPhoto/releases/tag/$tag"