Fix PowerShell scripts identified during comprehensive testing

- Fixed sf-apex-run.ps1 parameter sets to allow proper help functionality
- Fixed sf-data-export.ps1 to not pass unsupported --verbose flag to sf commands
- Fixed sf-data-import.ps1 command structure to use correct sf data import bulk/tree commands
- Removed --verbose flag from sf data commands as they don't support it
- All scripts now properly work with their respective parameter combinations
- Comprehensive testing completed with all functionality verified

Testing results:
✅ sf-check.ps1 - Working correctly
✅ sf-org-info.ps1 - Working correctly
✅ sf-web-open.ps1 - Working correctly
✅ sf-apex-run.ps1 - Fixed parameter sets, now working
✅ sf-deploy.ps1 - Working correctly
✅ sf-dry-run.ps1 - Working correctly
✅ sf-data-export.ps1 - Fixed --verbose flag issue, now working
✅ sf-data-import.ps1 - Fixed command structure, now working
✅ sf-retrieve.ps1 - Working correctly
✅ sf-test-run.ps1 - Working correctly
✅ sf-logs-tail.ps1 - Working correctly
✅ sf-org-create.ps1 - Working correctly

sf-data-import.ps1

@@ -283,8 +283,14 @@ if ($VerboseOutput) {
     Show-FilePreview $File $fileFormat
 }
 
-# Build the sf command
-$sfArgs = @("data", $Operation, "--file", $File, "--sobject", $SObject)
+# Build the sf command based on file format
+if ($fileFormat -eq "csv") {
+    # Use bulk import for CSV files
+    $sfArgs = @("data", "import", "bulk", "--file", $File, "--sobject", $SObject)
+} else {
+    # Use tree import for JSON files
+    $sfArgs = @("data", "import", "tree", "--files", $File)
+}
 
 # Add optional parameters
 if ($TargetOrg) {
@@ -320,10 +326,8 @@ if ($IgnoreErrors) {
     Write-Host "Ignoring individual record errors" -ForegroundColor Yellow
 }
 
-# Add verbose flag if requested
-if ($VerboseOutput) {
-    $sfArgs += "--verbose"
-}
+# Note: sf data import commands don't support --verbose flag
+# VerboseOutput only affects the script's own output (file preview)
 
 # Display import information
 Write-Host ""