build: add artifact collection and Arch Linux packaging scripts

Introduce scripts to collect Tauri build artifacts across platforms and
generate a pacman package for Arch Linux. Update .gitignore to exclude
the releases directory and reorder existing entries.

scripts/collect-artifacts.cmd

@@ -0,0 +1,144 @@
+@echo off
+setlocal enabledelayedexpansion
+
+set "SCRIPT_DIR=%~dp0"
+set "ROOT=%SCRIPT_DIR%.."
+
+:: ---------------------------------------------------------------
+:: 读取版本号
+:: ---------------------------------------------------------------
+for /f "usebackq delims=" %%i in (`powershell -Command "try { (Get-Content '%ROOT%\src-tauri\tauri.conf.json' -Raw | ConvertFrom-Json).version } catch { Write-Output '0.0.0' }"`) do set "VERSION=%%i"
+if "%VERSION%"=="0.0.0" (
+  echo 错误：无法读取 tauri.conf.json 中的版本号
+  exit /b 1
+)
+
+set "OUT_DIR=%ROOT%\releases\%VERSION%"
+set "PKG=bookmgr-client"
+set "DIST=%ROOT%\dist"
+set "BUNDLE=%ROOT%\src-tauri\target\release\bundle"
+
+echo ==^> 收集 %PKG% v%VERSION% 产物 → %OUT_DIR%
+
+:: ---------------------------------------------------------------
+:: 准备输出目录
+:: ---------------------------------------------------------------
+if exist "%OUT_DIR%" rmdir /s /q "%OUT_DIR%"
+mkdir "%OUT_DIR%"
+
+:: ---------------------------------------------------------------
+:: Web — 从 dist/ 打 tar.gz 和 zip
+:: ---------------------------------------------------------------
+if exist "%DIST%\index.html" (
+  set "TARBALL=%OUT_DIR%\%PKG%-%VERSION%-web.tar.gz"
+  echo   [web] !TARBALL!
+  tar -czf "!TARBALL!" -C "%DIST%" .
+
+  set "ZIPBALL=%OUT_DIR%\%PKG%-%VERSION%-web.zip"
+  echo   [web] !ZIPBALL!
+  powershell -Command "Compress-Archive -Path '%DIST%\*' -DestinationPath '!ZIPBALL!' -Force"
+) else (
+  echo   [web] 跳过（dist/ 未就绪，请先运行 pnpm build）
+)
+
+:: ---------------------------------------------------------------
+:: Windows — msi / nsis
+:: ---------------------------------------------------------------
+if exist "%BUNDLE%\msi" (
+  for %%f in ("%BUNDLE%\msi\%PKG%_*.msi") do (
+    if exist "%%f" (
+      set "DST=%OUT_DIR%\%PKG%-%VERSION%-windows-x86_64.msi"
+      echo   [msi] !DST!
+      copy /y "%%f" "!DST!" >nul
+    )
+  )
+)
+
+if exist "%BUNDLE%\nsis" (
+  for %%f in ("%BUNDLE%\nsis\%PKG%_*.exe") do (
+    if exist "%%f" (
+      set "DST=%OUT_DIR%\%PKG%-%VERSION%-windows-x86_64-setup.exe"
+      echo   [nsis] !DST!
+      copy /y "%%f" "!DST!" >nul
+    )
+  )
+)
+
+:: ---------------------------------------------------------------
+:: Linux — AppImage / deb / rpm / pacman
+:: ---------------------------------------------------------------
+if exist "%BUNDLE%\appimage" (
+  for %%f in ("%BUNDLE%\appimage\%PKG%_*_amd64.AppImage") do (
+    if exist "%%f" (
+      set "DST=%OUT_DIR%\%PKG%-%VERSION%-linux-amd64.AppImage"
+      echo   [appimage] !DST!
+      copy /y "%%f" "!DST!" >nul
+    )
+  )
+)
+
+if exist "%BUNDLE%\deb" (
+  for %%f in ("%BUNDLE%\deb\%PKG%_*_amd64.deb") do (
+    if exist "%%f" (
+      set "DST=%OUT_DIR%\%PKG%-%VERSION%-linux-amd64.deb"
+      echo   [deb] !DST!
+      copy /y "%%f" "!DST!" >nul
+    )
+  )
+)
+
+if exist "%BUNDLE%\rpm" (
+  for %%f in ("%BUNDLE%\rpm\%PKG%-*x86_64.rpm") do (
+    if exist "%%f" (
+      set "DST=%OUT_DIR%\%PKG%-%VERSION%-linux-x86_64.rpm"
+      echo   [rpm] !DST!
+      copy /y "%%f" "!DST!" >nul
+    )
+  )
+)
+
+if exist "%BUNDLE%\pacman" (
+  for %%f in ("%BUNDLE%\pacman\%PKG%-*.pkg.tar.zst") do (
+    if exist "%%f" (
+      set "fn=%%~nxf"
+      :: 替换 pkgrel 为 linux 标识
+      set "newname=!fn:-1-x86_64=-linux-x86_64!"
+      set "DST=%OUT_DIR%\!newname!"
+      echo   [pacman] !DST!
+      copy /y "%%f" "!DST!" >nul
+    )
+  )
+)
+
+:: ---------------------------------------------------------------
+:: Android — APK
+:: ---------------------------------------------------------------
+set "APK_DIR=%ROOT%\src-tauri\gen\android\app\build\outputs\apk"
+if exist "%APK_DIR%" (
+  for %%a in (arm64 x86_64 universal) do (
+    set "SRC=%APK_DIR%\%%a\release\app-%%a-release.apk"
+    if exist "!SRC!" (
+      set "DST=%OUT_DIR%\%PKG%-%VERSION%-android-%%a.apk"
+      echo   [apk] !DST!
+      copy /y "!SRC!" "!DST!" >nul
+    )
+  )
+)
+
+:: ---------------------------------------------------------------
+:: macOS — dmg
+:: ---------------------------------------------------------------
+if exist "%BUNDLE%\dmg" (
+  for %%f in ("%BUNDLE%\dmg\%PKG%_*.dmg") do (
+    if exist "%%f" (
+      set "DST=%OUT_DIR%\%PKG%-%VERSION%-macos-arm64.dmg"
+      echo   [dmg] !DST!
+      copy /y "%%f" "!DST!" >nul
+    )
+  )
+)
+
+:: ---------------------------------------------------------------
+echo.
+echo ==^> 完成
+dir "%OUT_DIR%"