fix: bug-fix sweep across node, audio, render, plugin subsystems

Node core:
- MathNode/TrigonometryNode combo strings realigned with Operation enums
- mathbase scalar/vector operand pick no longer uses bitwise type checks
- NodeSetPositionAndDependenciesRecursively moves dependencies again
- RemoveAllKeyframes undo actually restores keyframes
- NodeGroup GetInputName null-deref guard, passthrough ids use input id
- NodeValueTable::Has is an exact type match; tag fallback only for
  empty tags; kStrCombo/kPushButton get data type names
- delete_all_keyframes no longer loops forever on unparented keyframes;
  keyframe-load failures propagate; rational interpolation falls back to
  double; OpacityEffect no longer leaks its internal MathNode

Audio/footage:
- AudioVisualWaveform: GetSummaryFromTime underflow OOB read, TrimIn
  prepend length bookkeeping, OverwriteSums source channel indexing
- PanNode inserts the pan value into the sample job (keyframed pan
  works); OutputParamsChanged is emitted on device change; PortAudio
  device indices are validated before Pa_GetDeviceInfo
- Footage: AdjustTimeByLoopMode no longer hangs/UBs on degenerate
  lengths, GetStreamIndex bounds-checked, CheckFootage clears stale
  state on missing files, failed probes are not cached,
  FootageDescription::Load requires its own root element

Render/track:
- ViewerOutput pushes the tagged samples value; TrackList disconnects
  the track-height lambda; GetTrackFromReference validity check
- RenderManager dummy backend: null-initialized threads, guarded
  decoder-cache/timer paths; Renderer::Destroy releases color cache
  shaders/textures; unknown dynamic backends no longer alias to oakgl
- SharedMemoryRegion POSIX attach validates segment size; ReadMessage
  skips blank lines instead of failing; GC counter clamped;
  IsRenderingCustomRange implemented; TimeOffsetNode gets a true
  inverse OutputTimeAdjustment; zero-speed clips return the held frame

Plugin/nodes:
- OliveClip: stored default region of definition is honored, on-demand
  images are cached; OliveHost sets host identity properties and logs
  instead of showing modal dialogs offscreen; Plugin.h dead decls gone
- DespillNode guards graph-less use with Rec.709 fallback; description
  typos fixed (despill, swirl); mosaic applies when only one axis
  matches; Windows-only Project filename separator test fixed

tests/gtest/node_undo_test.cpp

@@ -243,8 +243,15 @@ TEST_F(NodeUndoTest, SetPositionCommandRestoresPreviousPosition)
 
 TEST_F(NodeUndoTest, SetPositionAndDependenciesRecursivelyMovesNode)
 {
+	auto *dep = AddNode<olive::MathNode>();
 	auto *node = AddNode<olive::MathNode>();
 	auto *context = AddNode<olive::Folder>();
+
+	olive::Node::ConnectEdge(
+		dep, olive::NodeInput(node, olive::MathNode::kParamAIn));
+
+	context->SetNodePositionInContext(
+		dep, olive::Node::Position(QPointF(1.0, 1.0)));
 	context->SetNodePositionInContext(
 		node, olive::Node::Position(QPointF(2.0, 3.0)));
 
@@ -253,9 +260,12 @@ TEST_F(NodeUndoTest, SetPositionAndDependenciesRecursivelyMovesNode)
 
 	cmd.redo_now();
 	EXPECT_EQ(context->GetNodePositionInContext(node), QPointF(8.0, 9.0));
+	// The dependency moves by the same delta as the node
+	EXPECT_EQ(context->GetNodePositionInContext(dep), QPointF(7.0, 7.0));
 
 	cmd.undo_now();
 	EXPECT_EQ(context->GetNodePositionInContext(node), QPointF(2.0, 3.0));
+	EXPECT_EQ(context->GetNodePositionInContext(dep), QPointF(1.0, 1.0));
 }
 
 TEST_F(NodeUndoTest, RemovePositionFromContextCommandRestoresPosition)
@@ -909,4 +919,12 @@ TEST_F(NodeUndoTest, ImmediateRemoveAllKeyframesCommandRemovesKeys)
 	EXPECT_TRUE(immediate->keyframe_tracks().at(0).isEmpty());
 	EXPECT_NE(key_a->parent(), node);
 	EXPECT_NE(key_b->parent(), node);
+
+	cmd.undo_now();
+	// Undo restores the keyframes to the node and its tracks
+	ASSERT_EQ(immediate->keyframe_tracks().at(0).size(), 2);
+	EXPECT_EQ(immediate->keyframe_tracks().at(0).at(0), key_a);
+	EXPECT_EQ(immediate->keyframe_tracks().at(0).at(1), key_b);
+	EXPECT_EQ(key_a->parent(), node);
+	EXPECT_EQ(key_b->parent(), node);
 }