feat(clean): NSIS uninstaller script and include it (#74)

scripts/installer.nsh

@@ -0,0 +1,55 @@
+; ClawX Custom NSIS Uninstaller Script
+; Provides a "Complete Removal" option during uninstallation
+; to delete .openclaw config and AppData resources.
+; Handles both per-user and per-machine (all users) installations.
+
+!macro customUnInstall
+  ; Ask user if they want to completely remove all user data
+  MessageBox MB_YESNO|MB_ICONQUESTION \
+    "Do you want to completely remove all ClawX user data?$\r$\n$\r$\nThis will delete:$\r$\n  • .openclaw folder (configuration & skills)$\r$\n  • AppData\Local\ClawX (local app data)$\r$\n  • AppData\Roaming\ClawX (roaming app data)$\r$\n$\r$\nSelect 'No' to keep your data for future reinstallation." \
+    /SD IDNO IDYES _cu_removeData IDNO _cu_skipRemove
+
+  _cu_removeData:
+    ; --- Always remove current user's data first ---
+    RMDir /r "$PROFILE\.openclaw"
+    RMDir /r "$LOCALAPPDATA\ClawX"
+    RMDir /r "$APPDATA\ClawX"
+
+    ; --- For per-machine (all users) installs, enumerate all user profiles ---
+    ; Registry key HKLM\...\ProfileList contains a subkey for each user SID.
+    ; Each subkey has a ProfileImagePath value like "C:\Users\username"
+    ; (which may contain unexpanded env vars like %SystemDrive%).
+    ; We iterate all profiles, expand the path, skip the current user
+    ; (already cleaned above), and remove data for every other user.
+    ; RMDir /r silently does nothing if the directory doesn't exist or
+    ; we lack permissions, so this is safe for per-user installs too.
+
+    StrCpy $R0 0  ; Registry enum index
+
+  _cu_enumLoop:
+    EnumRegKey $R1 HKLM "SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList" $R0
+    StrCmp $R1 "" _cu_enumDone  ; No more subkeys -> done
+
+    ; Read ProfileImagePath for this SID
+    ReadRegStr $R2 HKLM "SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList\$R1" "ProfileImagePath"
+    StrCmp $R2 "" _cu_enumNext  ; Skip entries without a path
+
+    ; ProfileImagePath may contain unexpanded env vars (e.g. %SystemDrive%),
+    ; expand them to get the real path.
+    ExpandEnvStrings $R2 $R2
+
+    ; Skip the current user's profile (already cleaned above)
+    StrCmp $R2 $PROFILE _cu_enumNext
+
+    ; Remove .openclaw and AppData for this user profile
+    RMDir /r "$R2\.openclaw"
+    RMDir /r "$R2\AppData\Local\ClawX"
+    RMDir /r "$R2\AppData\Roaming\ClawX"
+
+  _cu_enumNext:
+    IntOp $R0 $R0 + 1
+    Goto _cu_enumLoop
+
+  _cu_enumDone:
+  _cu_skipRemove:
+!macroend