Baseline: Ausgangszustand vor Modularisierung

Erster Commit des bestehenden monolithischen WinForms-Copytraders,
inklusive der Alt-Backups (*.bak), damit diese dauerhaft in der
Historie rekonstruierbar bleiben. Threema-Lib unter libs/ wurde
vendored (nested .git entfernt).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

PolyTraderSharp.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.14.36915.13 d17.14
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PolyTraderSharp", "PolyTraderSharp.csproj", "{7FB00BC0-D295-4A77-A53F-8E414FB0FD20}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{7FB00BC0-D295-4A77-A53F-8E414FB0FD20}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{7FB00BC0-D295-4A77-A53F-8E414FB0FD20}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{7FB00BC0-D295-4A77-A53F-8E414FB0FD20}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{7FB00BC0-D295-4A77-A53F-8E414FB0FD20}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {60AA6BCF-B17E-4D52-A290-14154A3E97CF}
+	EndGlobalSection
+EndGlobal