style: unify identifier naming per updated conventions

Automated with clang-tidy readability-identifier-naming (config added to
.clang-tidy) plus scripted passes, per the updated rules now documented
in CONTRIBUTING.md:

- types (class/struct/enum/alias/template params): PascalCase
- functions, variables, members: snake_case (incl. rational -> Rational)
- private/protected members: trailing underscore; static member
  variables likewise (instance_, available_themes_)
- constants and enum values: snake_case (kLinear -> k_linear,
  F32P -> f32p); ALL_CAPS reserved for macros
- macros: OAK_ prefix (OLIVE_ADD_TEST/OLIVE_ASSERT/OLIVE_CONFIG ->
  OAK_ADD_TEST/OAK_ASSERT/OAK_CONFIG, GL_PREAMBLE -> OAK_GL_PREAMBLE,
  include guards -> OAK_*)
- file names: all lowercase (Current/Plugin/OliveHost/OliveClip/
  OlivePluginInstance -> current/plugin/olivehost/oliveclip/
  oliveplugininstance)
- getters share the member name sans underscore, setters set_foo()
- Qt and third-party (OpenFX) virtual overrides and framework callbacks
  keep their original names (exempt in .clang-tidy)

Manual follow-ups required where automation could not reach:
- string-based QMetaObject/SIGNAL/SLOT references updated to renamed
  methods (AddTask, CreatedFile, DeleteSpecificFile, moveSelectionUp, ...)
- macro bodies referencing renamed methods (OLIVE_CONFIG,
  NODE_DEFAULT_DESTRUCTOR, MANAGEDDISPLAYWIDGET_*)
- self-shadowing locals renamed where signals/methods became same-named
  (size_changed, worker_count, selected_items, import param, filters)
- third_party OFX member/namespace usages restored (OFX::Host::*,
  _created, _clipPrefsDirty, createInstance, clearPersistentMessage)
- STL protocol aliases restored (const_iterator) with .clang-tidy
  ignore rules; qHash overloads restored

Full build and test suite pass: ctest 4/4, ~1960 gtest cases green.

app/render/job/pluginjob.h

@@ -17,10 +17,10 @@
  *
  */
 
-#ifndef PLUGINJOB_H
-#define PLUGINJOB_H
+#ifndef OAK_PLUGINJOB_H
+#define OAK_PLUGINJOB_H
 #include "acceleratedjob.h"
-#include "pluginSupport/OlivePluginInstance.h"
+#include "pluginSupport/oliveplugininstance.h"
 #include "olive/core/util/rational.h"
 
 #include <any>
@@ -33,19 +33,19 @@ namespace plugin
 
 class PluginJob : public AcceleratedJob {
 public:
-	explicit PluginJob(const OFX::Host::ImageEffect::Instance *pluginInstance,
+	explicit PluginJob(const OFX::Host::ImageEffect::Instance *plugin_instance,
 					   const PluginNode *node, NodeValueRow row,
-					   const olive::core::rational &time)
+					   const olive::core::Rational &time)
 		: AcceleratedJob()
-		, time_seconds_(time.toDouble())
+		, time_seconds_(time.to_double())
 	{
-		this->pluginInstance_ = pluginInstance;
+		this->pluginInstance_ = plugin_instance;
 		this->node_ = node;
-		Insert(row);
+		insert(row);
 	}
-	explicit PluginJob(const OFX::Host::ImageEffect::Instance *pluginInstance,
+	explicit PluginJob(const OFX::Host::ImageEffect::Instance *plugin_instance,
 					   const PluginNode *node, NodeValueRow row)
-		: PluginJob(pluginInstance, node, row, olive::core::rational(0))
+		: PluginJob(plugin_instance, node, row, olive::core::Rational(0))
 	{
 	}
 
@@ -54,7 +54,7 @@ public:
 		return const_cast<PluginNode *>(node_);
 	}
 
-	OFX::Host::ImageEffect::Instance *pluginInstance()
+	OFX::Host::ImageEffect::Instance *plugin_instance()
 	{
 		return const_cast<OFX::Host::ImageEffect::Instance *>(pluginInstance_);
 	}
@@ -67,9 +67,9 @@ public:
 private:
 	const OFX::Host::ImageEffect::Instance *pluginInstance_ = nullptr;
 
-	QHash<OfxTime, QHash<QString, std::any>> paramsOnTime;
+	QHash<OfxTime, QHash<QString, std::any>> paramsOnTime_;
 
-	QHash<QString, std::any> params;
+	QHash<QString, std::any> params_;
 
 	const PluginNode *node_ = nullptr;
 	double time_seconds_ = 0.0;
@@ -78,4 +78,4 @@ private:
 } // plugin
 } // olive
 
-#endif //PLUGINJOB_H
+#endif //OAK_PLUGINJOB_H