Modern UI redesign + rename PBIP_Samples to PBIP_Template

UI redesign:
- Rounded button styles with hover/press states
- Clean header bar with title, description, and mode toggle
- Separated action buttons (left: add, right: remove)
- Rounded file list and log panels
- Dark terminal-style log with Cascadia Code font
- Green convert button with prominent placement
- Progress bar inline with convert button

Renamed PBIP_Samples -> PBIP_Template across all code, config, README
Rebuilt distributable package with all changes

Author: bit-nk

CrystalReport/CrystalMigrationOrchestrator/OrchestratorArgs.cs

@@ -117,7 +117,7 @@ public static void PrintUsage()
             Console.WriteLine("  --sqlFolder <sqlTruthFolder>");
             Console.WriteLine();
             Console.WriteLine("PBIP generation options:");
-            Console.WriteLine("  --template <PBIP_Samples_Folder>       (required if running PBIP step)");
+            Console.WriteLine("  --template <PBIP_Template_Folder>       (required if running PBIP step)");
             Console.WriteLine("  --pbipOut <outFolder>                  (default: <root>\\_pbip)");
             Console.WriteLine("  --pbipMode stub|sql                    (default: stub)");
             Console.WriteLine();

CrystalReport/CrystalReportConverter/MainWindow.xaml

@@ -223,7 +223,7 @@ private string FindTemplateFolder(string toolsDir)
             try
             {
                 // Check tools dir and its parents
-                var dirs = Directory.GetDirectories(toolsDir, "PBIP_Samples", SearchOption.AllDirectories);
+                var dirs = Directory.GetDirectories(toolsDir, "PBIP_Template", SearchOption.AllDirectories);
                 if (dirs.Any()) return dirs.First();
 
                 // Check relative to exe
@@ -237,7 +237,7 @@ private string FindTemplateFolder(string toolsDir)
                         if (parent == null) break;
                         dir = parent.FullName;
                     }
-                    dirs = Directory.GetDirectories(dir, "PBIP_Samples", SearchOption.AllDirectories);
+                    dirs = Directory.GetDirectories(dir, "PBIP_Template", SearchOption.AllDirectories);
                     if (dirs.Any()) return dirs.First();
                 }
             }

CrystalReport/CrystalReportConverter/PipelineRunner.cs

@@ -59,7 +59,7 @@ To switch from stub to SQL mode, re-run the pipeline with `--pbipMode sql`.
 CrystalMigrationOrchestrator\bin\Debug\CrystalMigrationOrchestrator.exe ^
   --root "Output" ^
   --rpt "_source\_rpt_files_main" ^
-  --template "_source\PBIP_Samples" ^
+  --template "_source\PBIP_Template" ^
   --pbipMode sql
 ```
 
@@ -113,7 +113,7 @@ CrystalReport/                          <- Solution root
 |   |-- _rpt_files_main/               <- INPUT: your .rpt files (gitignored)
 |   |-- config/                         <- INPUT: datasources.yaml (gitignored)
 |   |-- _truth/                         <- INPUT: schemaTruth.json + sql/ (committed)
-|   |-- PBIP_Samples/                   <- INPUT: Power BI template (committed)
+|   |-- PBIP_Template/                   <- INPUT: Power BI template (committed)
 |
 |-- XmlExtractor/                       <- Step 1: RptToXml tool (builds separately)
 |-- CrystalReport/                      <- Step 2: Dump extractor + DAX translation
@@ -159,7 +159,7 @@ cd CrystalReport
 CrystalMigrationOrchestrator\bin\Debug\CrystalMigrationOrchestrator.exe ^
   --root "Output" ^
   --rpt "_source\_rpt_files_main" ^
-  --template "_source\PBIP_Samples"
+  --template "_source\PBIP_Template"
 ```
 
 Output: `Output\_rdl\*.rdl` files with saved data from the .rpt files.
@@ -169,7 +169,7 @@ Output: `Output\_rdl\*.rdl` files with saved data from the .rpt files.
 CrystalMigrationOrchestrator\bin\Debug\CrystalMigrationOrchestrator.exe ^
   --root "Output" ^
   --rpt "_source\_rpt_files_main" ^
-  --template "_source\PBIP_Samples" ^
+  --template "_source\PBIP_Template" ^
   --pbipMode sql
 ```
 
@@ -253,7 +253,7 @@ VisualBuildPackGenerator\bin\Debug\VisualBuildPackGenerator.exe ^
 ### Step 8 -- PBIP Project Generation
 ```bat
 PbipProjectGenerator\bin\Debug\PbipProjectGenerator.exe ^
-  --pbip "Output" --template "_source\PBIP_Samples" "Output\_pbip" --mode stub
+  --pbip "Output" --template "_source\PBIP_Template" "Output\_pbip" --mode stub
 ```
 
 ### Step 9 -- RDL Paginated Report Generation