INI import: strip greeting quotes; add gsheet reference

Strip a surrounding pair of double quotes from the [Plasma] Greeting on
import (the gsheet "INI_V2" output writes Greeting="..."), and add the
master button-layout spreadsheet that documents the RIO.ini format and the
16-bit map-word encoding. Test covers the real sheet output (modifier-stacked
words, keypad VK words, RIO command words) round-tripping verbatim.

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

src/RioJoy.Core/Profiles/RioIniImporter.cs

@@ -21,7 +21,7 @@ public static class RioIniImporter
         var profile = new RioProfile
         {
             Name = name,
-            PlasmaGreeting = ini.GetString("Plasma", "Greeting"),
+            PlasmaGreeting = StripQuotes(ini.GetString("Plasma", "Greeting")),
             WallpaperPath = ini.GetString("Desktop", "File"),
             Calibration = new AxisCalibrationConfig
             {
@@ -48,6 +48,16 @@ public static class RioIniImporter
         return profile;
     }
 
+    // The gsheet writes the greeting as a quoted string (e.g. Greeting="Hello,");
+    // strip a single pair of surrounding double quotes so it displays cleanly.
+    private static string? StripQuotes(string? value)
+    {
+        if (value is null)
+            return null;
+        string v = value.Trim();
+        return v.Length >= 2 && v[0] == '"' && v[^1] == '"' ? v[1..^1] : v;
+    }
+
     // Keys look like "RIO00".."RIO6F": "RIO" + a hex address into the iRIO table.
     private static bool TryParseButtonAddress(string key, out int address)
     {

tests/RioJoy.Core.Tests/Profiles/RioIniImporterTests.cs

@@ -55,4 +55,37 @@ public class RioIniImporterTests
         RioProfile p = RioIniImporter.Import("[JoyStick]\ninvertX = true");
         Assert.True(p.Calibration.EnableZR);
     }
+
+    // The real gsheet "INI_V2" output: modifier-stacked words (0x8F26 =
+    // lit+shift+ctrl+alt+ext + VK 0x26), keypad VK words (0x30), and RIO
+    // command words (0x7000) must all survive import verbatim.
+    private const string SheetSample = """
+        ;RIO INI V2 built useing gsheet configurator's final value
+        [Desktop]
+        File=C:\games\RIO\defalt.bmp
+        [Plasma]
+        Greeting="Hello,"
+        [JoyStick]
+        invertX=0
+        enableZR=1
+
+        [Buttons]
+        RIO04=0x8F26
+        RIO50=0x30
+        RIO60=0x7000
+        RIO6F=0x700F
+        """;
+
+    [Fact]
+    public void Imports_RealSheetOutput_PreservesRawWords()
+    {
+        RioProfile p = RioIniImporter.Import(SheetSample, "Sheet");
+
+        Assert.Equal(0x8F26, p.Buttons[0x04]); // lit + all modifiers + extended
+        Assert.Equal(0x30, p.Buttons[0x50]);   // keypad '0'
+        Assert.Equal(0x7000, p.Buttons[0x60]); // RIO command word
+        Assert.Equal(0x700F, p.Buttons[0x6F]); // last address in the table
+        Assert.Equal(@"C:\games\RIO\defalt.bmp", p.WallpaperPath);
+        Assert.Equal("Hello,", p.PlasmaGreeting); // surrounding quotes stripped
+    }
 }