docs: section L — Windows startup (--tray)

L1 hidden start with no taskbar button, L2 the button coming back on restore,
L3 the normal launch (validated). Records why every fix placed inside the form
was powerless: the FMX proxy is shown before FormCreate is reached.

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

delphi-backend/PMServer.dproj

@@ -204,6 +204,7 @@ $(PreBuildEvent)]]></PreBuildEvent>
         <Icon_MainIcon>PMServer_Icon1.ico</Icon_MainIcon>
         <UWP_DelphiLogo44>app.png</UWP_DelphiLogo44>
         <UWP_DelphiLogo150>app.png</UWP_DelphiLogo150>
+        <Debugger_RunParams>-tray</Debugger_RunParams>
     </PropertyGroup>
     <ItemGroup>
         <DelphiCompile Include="$(MainSource)">
@@ -1251,8 +1252,7 @@ $(PreBuildEvent)]]></PreBuildEvent>
     <Import Project="$(APPDATA)\Embarcadero\$(BDSAPPDATABASEDIR)\$(PRODUCTVERSION)\UserTools.proj" Condition="Exists('$(APPDATA)\Embarcadero\$(BDSAPPDATABASEDIR)\$(PRODUCTVERSION)\UserTools.proj')"/>
     <Import Project="$(MSBuildProjectName).deployproj" Condition="Exists('$(MSBuildProjectName).deployproj')"/>
     <PropertyGroup Condition="'$(Config)'=='Debug' And '$(Platform)'=='Win32'">
-        <PreBuildEvent>&quot;Z:\password-manager\delphi-backend\assets\BuildAssets.cmd&quot;
-</PreBuildEvent>
+        <PreBuildEvent>&quot;Z:\password-manager\delphi-backend\assets\BuildAssets.cmd&quot;</PreBuildEvent>
         <PreBuildEventIgnoreExitCode>False</PreBuildEventIgnoreExitCode>
         <PreLinkEvent/>
         <PreLinkEventIgnoreExitCode>False</PreLinkEventIgnoreExitCode>