fix: bugs surfaced by new gtest coverage

- html.cpp: rgba() colors parsed with setRedF/GreenF/BlueF (0-1) while the
  writer emits 0-255 integers, so semi-transparent text colors lost their
  RGB on round-trip; parse with integer setters instead
- CLIProgressDialog: percentage padding compared normalized progress
  (0.0-1.0) against 10/100, so padding was always fully applied; compute
  the percentage first
- TimelineUndoPointer BlockTrimCommand: remove_block_from_graph_ was
  never initialized (UB on redo)
- TimelineUndoGeneral TransitionRemoveCommand: track_ was never
  initialized; GetRelevantProject() could dereference it before redo()
- ProjectLoadTask::Run(): failure path deleted project_ without
  resetting it, leaving GetLoadedProject() dangling

app/cli/cliprogress/cliprogressdialog.cpp

@@ -86,15 +86,20 @@ void CLIProgressDialog::Update()
 
 	std::cout << "] ";
 
-	if (progress_ < 100) {
+	// Pad the percentage so single/double/triple digit values all occupy the
+	// same width. Note progress_ is normalized (0.0-1.0), so the percentage
+	// must be computed before comparing against 10/100.
+	const int percent = qRound(progress_ * 100.0);
+
+	if (percent < 100) {
 		std::cout << " ";
 	}
 
-	if (progress_ < 10) {
+	if (percent < 10) {
 		std::cout << " ";
 	}
 
-	std::cout << qRound(progress_ * 100.0) << "% " << std::endl << std::flush;
+	std::cout << percent << "% " << std::endl << std::flush;
 }
 
 void CLIProgressDialog::SetProgress(double p)

app/common/html.cpp

@@ -356,9 +356,9 @@ QTextCharFormat Html::ReadCharFormat(const QXmlStreamAttributes &attributes)
 						QStringList rgba = vals_only.split(',');
 						if (rgba.size() == 4) {
 							QColor c;
-							c.setRedF(rgba.at(0).toDouble());
-							c.setGreenF(rgba.at(1).toDouble());
-							c.setBlueF(rgba.at(2).toDouble());
+							c.setRed(rgba.at(0).toInt()); // Writer emits 0-255 RGB (CSS rgba() convention)
+							c.setGreen(rgba.at(1).toInt());
+							c.setBlue(rgba.at(2).toInt());
 							c.setAlphaF(rgba.at(3).toDouble());
 							fmt.setForeground(c);
 						}

app/task/project/load/load.cpp

@@ -82,6 +82,7 @@ bool ProjectLoadTask::Run()
 		return true;
 	} else {
 		delete project_;
+		project_ = nullptr;
 		return false;
 	}
 }

app/timeline/timelineundogeneral.h

@@ -25,6 +25,7 @@
 #include "config/config.h"
 #include "node/block/clip/clip.h"
 #include "node/block/gap/gap.h"
+#include "node/block/transition/transition.h"
 #include "node/output/track/track.h"
 #include "node/output/track/tracklist.h"
 #include "node/output/viewer/viewer.h"
@@ -201,6 +202,7 @@ class TransitionRemoveCommand : public UndoCommand {
 public:
 	TransitionRemoveCommand(TransitionBlock *block, bool remove_from_graph)
 		: block_(block)
+		, track_(block->track())
 		, remove_from_graph_(remove_from_graph)
 		, remove_command_(nullptr)
 	{

app/timeline/timelineundopointer.h

@@ -52,6 +52,7 @@ public:
 		, mode_(mode)
 		, deleted_adjacent_command_(nullptr)
 		, trim_is_a_roll_edit_(false)
+		, remove_block_from_graph_(true)
 	{
 	}