Docs: local Sacred Gold install required, no hard-coded game path

README explains --game-dir and the stored GameDir; the VS Code launch
uses the stored path and builds through build.ps1.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

.vscode/launch.json

@@ -3,13 +3,15 @@
     "configurations": [
         {
             // Builds, then starts the game through the launcher (no debugger in the game).
+            // The game folder comes from build/x86-debug/sacredK.ini: run the
+            // launcher once with --game-dir "<Sacred Gold folder>" (README.md).
             "name": "Run Sacred (sacredK)",
             "type": "cppvsdbg",
             "request": "launch",
             "program": "${workspaceFolder}/build/x86-debug/sacredK.exe",
-            "args": ["--game-dir", "D:\\Gaming\\Sacred Gold", "log"],
+            "args": ["log"],
             "cwd": "${workspaceFolder}/build/x86-debug",
-            "preLaunchTask": "CMake: build",
+            "preLaunchTask": "Build x86-debug",
             "console": "internalConsole"
         },
         {