diff --git a/scripts/build-linux-docker.sh b/scripts/build-linux-docker.sh
index 27aa460..9f267db 100644
--- a/scripts/build-linux-docker.sh
+++ b/scripts/build-linux-docker.sh
@@ -4,7 +4,7 @@ set -euo pipefail
 # Optional first argument mirrors build-linux.sh. The Docker build still writes
 # the final artifact into the local dist/ tree, not into the container. The
 # default includes the application version and target platform.
-version="$(sed -n 's/^var Version = "\(.*\)"/\1/p' src/core/version.go)"
+version="$(sed -n 's/^var Version = "\(.*\)"/\1/p' src/app/version.go)"
 version="${version:-0.0.0-dev}"
 tag="gitea.mixdep.ru/mix/gosentry-builder:${version}"
 output="${1:-dist/linux/gosentry-${version}-linux-amd64}"
@@ -26,7 +26,7 @@ docker run --rm \
     -v "$(pwd):/src" \
     -w /src \
     "$tag" \
-    bash -c 'CGO_ENABLED=1 GOOS=linux GOARCH=amd64 go build -buildvcs=false -trimpath -ldflags "-s -w -X gitea.mixdep.ru/mix/gosentry/src/core.Version=${VERSION}" -o "${OUTPUT}" ./cmd/gosentry'
+    bash -c 'CGO_ENABLED=1 GOOS=linux GOARCH=amd64 go build -buildvcs=false -trimpath -ldflags "-s -w -X gitea.mixdep.ru/mix/gosentry/src/app.Version=${VERSION}" -o "${OUTPUT}" ./cmd/gosentry'
 
 # Icons are embedded in the Go binary, so there is no assets directory to copy
 # after extracting the Linux executable.
diff --git a/scripts/build-linux.sh b/scripts/build-linux.sh
index 375d67f..23b16d3 100644
--- a/scripts/build-linux.sh
+++ b/scripts/build-linux.sh
@@ -3,7 +3,7 @@ set -euo pipefail
 
 # Optional first argument lets a developer or CI job choose the output path. The
 # default includes the application version and target platform.
-version="$(sed -n 's/^var Version = "\(.*\)"/\1/p' src/core/version.go)"
+version="$(sed -n 's/^var Version = "\(.*\)"/\1/p' src/app/version.go)"
 version="${version:-0.0.0-dev}"
 output="${1:-dist/linux/gosentry-${version}-linux-amd64}"
 mkdir -p "$(dirname "$output")"
@@ -17,7 +17,7 @@ export GOARCH=amd64
 
 # -trimpath removes local machine paths from debug/build metadata. -s -w strips
 # symbol/debug tables to keep the desktop binary smaller.
-go build -trimpath -ldflags "-s -w -X gitea.mixdep.ru/mix/gosentry/src/core.Version=${version}" -o "$output" ./cmd/gosentry
+go build -trimpath -ldflags "-s -w -X gitea.mixdep.ru/mix/gosentry/src/app.Version=${version}" -o "$output" ./cmd/gosentry
 
 # The application icon is embedded by Go, so the Linux build does not need a
 # sidecar assets directory beside the executable.
diff --git a/scripts/build-release-linux.sh b/scripts/build-release-linux.sh
index 4c1aca5..b3f8dea 100644
--- a/scripts/build-release-linux.sh
+++ b/scripts/build-release-linux.sh
@@ -9,7 +9,7 @@ script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 repo_root="$(cd "${script_dir}/.." && pwd)"
 cd "$repo_root"
 
-version="$(sed -n 's/^var Version = "\(.*\)"/\1/p' src/core/version.go)"
+version="$(sed -n 's/^var Version = "\(.*\)"/\1/p' src/app/version.go)"
 version="${version:-0.0.0-dev}"
 tag="gitea.mixdep.ru/mix/gosentry-builder:${version}"
 
@@ -99,15 +99,15 @@ run_in_builder() {
 }
 
 build_linux_amd64() {
-    run_in_builder 'mkdir -p dist/linux && CGO_ENABLED=1 GOOS=linux GOARCH=amd64 go build -buildvcs=false -trimpath -ldflags "-s -w -X gitea.mixdep.ru/mix/gosentry/src/core.Version=${VERSION}" -o "dist/linux/gosentry-${VERSION}-linux-amd64" ./cmd/gosentry'
+    run_in_builder 'mkdir -p dist/linux && CGO_ENABLED=1 GOOS=linux GOARCH=amd64 go build -buildvcs=false -trimpath -ldflags "-s -w -X gitea.mixdep.ru/mix/gosentry/src/app.Version=${VERSION}" -o "dist/linux/gosentry-${VERSION}-linux-amd64" ./cmd/gosentry'
 }
 
 build_linux_arm64() {
-    run_in_builder 'mkdir -p dist/linux && CC=aarch64-linux-gnu-gcc CGO_ENABLED=1 GOOS=linux GOARCH=arm64 CGO_CFLAGS="--sysroot=/ -I/usr/include/aarch64-linux-gnu" CGO_LDFLAGS="--sysroot=/ -L/usr/lib/aarch64-linux-gnu" PKG_CONFIG_LIBDIR=/usr/lib/aarch64-linux-gnu/pkgconfig go build -buildvcs=false -trimpath -ldflags "-s -w -X gitea.mixdep.ru/mix/gosentry/src/core.Version=${VERSION}" -o "dist/linux/gosentry-${VERSION}-linux-arm64" ./cmd/gosentry'
+    run_in_builder 'mkdir -p dist/linux && CC=aarch64-linux-gnu-gcc CGO_ENABLED=1 GOOS=linux GOARCH=arm64 CGO_CFLAGS="--sysroot=/ -I/usr/include/aarch64-linux-gnu" CGO_LDFLAGS="--sysroot=/ -L/usr/lib/aarch64-linux-gnu" PKG_CONFIG_LIBDIR=/usr/lib/aarch64-linux-gnu/pkgconfig go build -buildvcs=false -trimpath -ldflags "-s -w -X gitea.mixdep.ru/mix/gosentry/src/app.Version=${VERSION}" -o "dist/linux/gosentry-${VERSION}-linux-arm64" ./cmd/gosentry'
 }
 
 build_windows_amd64() {
-    run_in_builder 'mkdir -p dist/windows && x86_64-w64-mingw32-windres -O coff -o cmd/gosentry/rsrc_windows_amd64.syso packaging/windows/gosentry.rc && CC=x86_64-w64-mingw32-gcc CGO_ENABLED=1 GOOS=windows GOARCH=amd64 go build -buildvcs=false -trimpath -ldflags "-s -w -H=windowsgui -X gitea.mixdep.ru/mix/gosentry/src/core.Version=${VERSION}" -o "dist/windows/gosentry-${VERSION}-windows-amd64.exe" ./cmd/gosentry'
+    run_in_builder 'mkdir -p dist/windows && x86_64-w64-mingw32-windres -O coff -o cmd/gosentry/rsrc_windows_amd64.syso packaging/windows/gosentry.rc && CC=x86_64-w64-mingw32-gcc CGO_ENABLED=1 GOOS=windows GOARCH=amd64 go build -buildvcs=false -trimpath -ldflags "-s -w -H=windowsgui -X gitea.mixdep.ru/mix/gosentry/src/app.Version=${VERSION}" -o "dist/windows/gosentry-${VERSION}-windows-amd64.exe" ./cmd/gosentry'
 }
 
 mapfile -t targets < <(choose_targets "$@" | normalize_targets | awk '!seen[$0]++')
diff --git a/scripts/build-windows.bat b/scripts/build-windows.bat
index 1bc9483..d34870c 100644
--- a/scripts/build-windows.bat
+++ b/scripts/build-windows.bat
@@ -6,7 +6,7 @@ REM directory. Move to the repository root (the parent of scripts\) before using
 REM relative paths such as .\cmd\gosentry and packaging\windows\gosentry.rc.
 cd /d "%~dp0\.."
 
-for /f "tokens=4" %%V in ('findstr /C:"var Version" src\core\version.go') do set "VERSION=%%~V"
+for /f "tokens=4" %%V in ('findstr /C:"var Version" src\app\version.go') do set "VERSION=%%~V"
 if "%VERSION%"=="" set "VERSION=0.0.0-dev"
 set "VERSION=%VERSION:"=%"
 
@@ -47,7 +47,7 @@ if %ERRORLEVEL%==0 (
 REM -trimpath removes local machine paths from the binary, -s -w reduce binary
 REM size, and -H=windowsgui prevents a separate console window from opening when
 REM the GUI app starts from Explorer or a shortcut.
-"%GOEXE%" build -trimpath -ldflags "-s -w -H=windowsgui -X gitea.mixdep.ru/mix/gosentry/src/core.Version=%VERSION%" -o "%OUTPUT%" .\cmd\gosentry
+"%GOEXE%" build -trimpath -ldflags "-s -w -H=windowsgui -X gitea.mixdep.ru/mix/gosentry/src/app.Version=%VERSION%" -o "%OUTPUT%" .\cmd\gosentry
 if errorlevel 1 exit /b 1
 
 REM Icons are embedded into the executable, so no assets directory is copied next
diff --git a/src/core/version.go b/src/app/version.go
similarity index 94%
rename from src/core/version.go
rename to src/app/version.go
index 50c98b9..8d10135 100644
--- a/src/core/version.go
+++ b/src/app/version.go
@@ -1,4 +1,4 @@
-package core
+package app
 
 // Version is the application version shown in the GUI and used by build
 // scripts in artifact names. It is a var rather than a const so release builds
diff --git a/src/core/model.go b/src/core/model.go
deleted file mode 100644
index 9a8bc95..0000000
--- a/src/core/model.go
+++ /dev/null
@@ -1 +0,0 @@
-package core
diff --git a/src/core/paths.go b/src/core/paths.go
deleted file mode 100644
index 9a8bc95..0000000
--- a/src/core/paths.go
+++ /dev/null
@@ -1 +0,0 @@
-package core
diff --git a/src/core/store.go b/src/core/store.go
deleted file mode 100644
index 9a8bc95..0000000
--- a/src/core/store.go
+++ /dev/null
@@ -1 +0,0 @@
-package core
diff --git a/src/core/store_test.go b/src/core/store_test.go
deleted file mode 100644
index 9a8bc95..0000000
--- a/src/core/store_test.go
+++ /dev/null
@@ -1 +0,0 @@
-package core
diff --git a/src/gui/app.go b/src/gui/app.go
index a683b16..373c2a4 100644
--- a/src/gui/app.go
+++ b/src/gui/app.go
@@ -13,7 +13,7 @@ import (
 	"time"
 
 	"gitea.mixdep.ru/mix/gosentry/assets"
-	"gitea.mixdep.ru/mix/gosentry/src/core"
+	"gitea.mixdep.ru/mix/gosentry/src/app"
 	"gitea.mixdep.ru/mix/gosentry/src/domain"
 	"gitea.mixdep.ru/mix/gosentry/src/platform/autostart"
 	"gitea.mixdep.ru/mix/gosentry/src/platform/desktop"
@@ -22,10 +22,10 @@ import (
 	"gitea.mixdep.ru/mix/gosentry/src/storage"
 
 	"fyne.io/fyne/v2"
-	"fyne.io/fyne/v2/app"
+	fyneapp "fyne.io/fyne/v2/app"
 	"fyne.io/fyne/v2/container"
 	"fyne.io/fyne/v2/dialog"
-	"fyne.io/fyne/v2/driver/desktop"
+	fynedesktop "fyne.io/fyne/v2/driver/desktop"
 	"fyne.io/fyne/v2/layout"
 	"fyne.io/fyne/v2/theme"
 	"fyne.io/fyne/v2/widget"
@@ -60,10 +60,10 @@ func Run(startInTray bool) {
 
 	// A stable app ID lets Fyne persist desktop preferences consistently across
 	// launches and gives tray/window integration a predictable identity.
-	a := app.NewWithID(appID)
+	a := fyneapp.NewWithID(appID)
 	a.SetIcon(loadAppIcon())
 
-	w := a.NewWindow("GoSentry " + core.Version)
+	w := a.NewWindow("GoSentry " + app.Version)
 	configureSystemTray(a, w)
 	w.Resize(fyne.NewSize(1120, 720))
 	content, recordStartup := newMainView(w)
@@ -91,7 +91,7 @@ func loadAppIcon() fyne.Resource {
 }
 
 func configureSystemTray(a fyne.App, w fyne.Window) {
-	desk, ok := a.(desktop.App)
+	desk, ok := a.(fynedesktop.App)
 	if !ok {
 		// Not every Fyne driver exposes desktop tray features. Returning silently
 		// keeps the same binary usable on platforms or sessions without a tray.
@@ -1015,7 +1015,7 @@ func settingsView(w fyne.Window, store *storage.Store, jobs *[]job) fyne.CanvasO
 		settingsStatus,
 		widget.NewSeparator(),
 		widget.NewLabelWithStyle("About", fyne.TextAlignLeading, fyne.TextStyle{Bold: true}),
-		settingsRow("GoSentry", widget.NewLabel(core.Version)),
+		settingsRow("GoSentry", widget.NewLabel(app.Version)),
 		settingsRow("Go", widget.NewLabel(runtime.Version())),
 		settingsRow("Fyne", widget.NewLabel(fyneVersion())),
 		settingsRow("Repository", widget.NewHyperlink(projectRepositoryURL, mustParseURL(projectRepositoryURL))),