Add roadmap for system preflight checks

README.md

@@ -37,7 +37,7 @@ dotnet build AppTunnel.sln -c Release
 dotnet publish AppTunnel\AppTunnel.csproj -c Release -r win-x64 --self-contained true -p:PublishSingleFile=true -p:EnableCompressionInSingleFile=true -p:IncludeNativeLibrariesForSelfExtract=true -p:DebugType=None -p:DebugSymbols=false
 ```
 
-More release notes are in `docs/BUILD.md`.
+More release notes are in `docs/BUILD.md`. Future ideas are tracked in `docs/ROADMAP.md`.
 
 ## License
 

docs/ROADMAP.md

@@ -0,0 +1,30 @@
+# Roadmap
+
+TunnelX is free and open-source. This roadmap is not a promise of delivery, but a public place to track useful future improvements.
+
+## Planned Ideas
+
+### System preflight and guided repair
+
+Add an in-app system check before connecting that can detect common local problems and guide the user clearly.
+
+Candidate checks:
+
+- Administrator privileges
+- Runtime mode: standalone/self-contained vs framework-dependent developer build
+- Xray and sing-box availability
+- WinDivert and Wintun native component availability
+- extraction folder write permissions
+- route and packet interception readiness
+- GitHub release/update status
+
+Potential actions:
+
+- re-extract bundled components when possible
+- show a clear manual fix guide when automatic repair is not possible
+- ask before downloading any external file
+- download only from official TunnelX GitHub Releases
+- verify downloaded files before use
+- avoid silent driver or system-level changes
+
+For public releases, TunnelX should continue to prefer self-contained standalone EXE builds so end users do not need to install the .NET Runtime separately.