Fix up kicad-cli DRC project and library handling

Fixes https://gitlab.com/kicad/code/kicad/-/issues/23379

eeschema/eeschema.cpp

@@ -95,12 +95,29 @@ static std::unique_ptr<SCHEMATIC> readSchematicFromFile( const std::string& aFil
 
     SETTINGS_MANAGER& manager = Pgm().GetSettingsManager();
 
-    // TODO: this must load the schematic's project, not a default project.  At the very minimum
-    // variable resolution won't work without the project, but there might also be issues with
-    // netclasses, etc.
-    manager.LoadProject( "" );
+    wxFileName pro( aFilename );
+    pro.SetExt( FILEEXT::ProjectFileExtension );
+    pro.MakeAbsolute();
+    wxString projectPath = pro.GetFullPath();
+
+    PROJECT* project = manager.GetProject( projectPath );
+
+    if( !project )
+    {
+        if( wxFileExists( projectPath ) )
+        {
+            // cli
+            manager.LoadProject( projectPath, true );
+            project = manager.GetProject( projectPath );
+        }
+        else
+        {
+            manager.LoadProject( "" );
+        }
+    }
+
     schematic->Reset();
-    schematic->SetProject( &manager.Prj() );
+    schematic->SetProject( project );
     SCH_SHEET* rootSheet = pi->LoadSchematicFile( aFilename, schematic.get() );
 
     if( !rootSheet )

pcbnew/pcbnew_jobs_handler.cpp

@@ -59,6 +59,7 @@
 #include <jobs/job_pcb_import.h>
 #include <jobs/job_pcb_upgrade.h>
 #include <eda_units.h>
+#include <footprint_library_adapter.h>
 #include <lset.h>
 #include <cli/exit_codes.h>
 #include <exporters/place_file_exporter.h>
@@ -2288,6 +2289,11 @@ int PCBNEW_JOBS_HANDLER::JobExportDrc( JOB* aJob )
     if( !brd )
         return CLI::EXIT_CODES::ERR_INVALID_INPUT_FILE;
 
+    // Running DRC requires libraries be loaded, so make sure they have been
+    FOOTPRINT_LIBRARY_ADAPTER* adapter = PROJECT_PCB::FootprintLibAdapter( brd->GetProject() );
+    adapter->AsyncLoad();
+    adapter->BlockUntilLoaded();
+
     if( drcJob->GetConfiguredOutputPath().IsEmpty() )
     {
         wxFileName fn = brd->GetFileName();

pcbnew/python/scripting/pcbnew_scripting_helpers.cpp

@@ -159,18 +159,20 @@ BOARD* LoadBoard( const wxString& aFileName, PCB_IO_MGR::PCB_FILE_T aFormat, boo
     // By default only the BMP handler is available.
     wxInitAllImageHandlers();
 
-    PROJECT* project = GetSettingsManager()->GetProject( projectPath );
+    SETTINGS_MANAGER& settingsManager = PgmOrNull() ? Pgm().GetSettingsManager() : *GetSettingsManager();
+
+    PROJECT* project = settingsManager.GetProject( projectPath );
 
     if( !project )
     {
         if( wxFileExists( projectPath ) )
         {
             // cli
-            GetSettingsManager()->LoadProject( projectPath, aSetActive );
-            project = GetSettingsManager()->GetProject( projectPath );
+            settingsManager.LoadProject( projectPath, aSetActive );
+            project = settingsManager.GetProject( projectPath );
         }
     }
-    else if( s_PcbEditFrame && project == &GetSettingsManager()->Prj() )
+    else if( s_PcbEditFrame && project == &settingsManager.Prj() )
     {
         // Project is already loaded?  Then so is the board
         return s_PcbEditFrame->GetBoard();