core: merge oak-common into oak-core

oak-common is gone; its modules (configstore, xmlutils, ocioutils,
oiioutils, colormath, colortransform, videoparams, ffmpegutils, ...)
now live in oak-core alongside the value types. The render value/GPU
types moved too: backend (wgpu context + DisplayRenderer), color
(ColorProcessor over ocio-rs), texture, frame, and the commonutil
config helpers.

Fix-ups to make the merged tree build and pass tests:

- oak-core Cargo.toml: wgpu back to 25 (the moved backend code is
  written against that API generation); add the toml/quick-xml/image
  deps oak-common carried.
- lib.rs: drop the duplicate 'pub mod error;'.
- error.rs: unified OAKCORE_* codes; restore Error::new() and
  From<OcioError> from oak-common's error type.
- backend.rs/color.rs: oak_core::/oak_render:: self-references
  rewritten to crate::; the shaderfx-dependent GPU effect test moved
  to oak-render's shaderfx tests (shaderfx depends on oak-node and
  cannot live in oak-core).
- oak-render's error module re-exports oak_core::error::{Error,
  Result}; the OAKRENDER_* codes stay as the public-code contract.
- oak-node jobs.rs: ColorProcessor imported from oak_core::color.
- Integration tests repointed at oak_core::{texture, frame, backend,
  color, colormath}.
- the display-ICC regression test treats an empty OAK_DISPLAY_ICC as
  unset, matching displayicc::env_override_icc.

crates/oak-node/src/footage.rs

@@ -772,15 +772,15 @@ mod tests {
 	use oak_codec::footagedescription::{FootageDescription, StreamEntry};
 
 	fn video_entry(stream_index: i32, duration: i64) -> StreamEntry {
-		let mut vp = oak_common::videoparams::VideoParams::new_basic(
-			1920,
-			1080,
-			oak_common::ocioutils::PixelFormat::F32,
-			4,
-			1,
-			1,
-			0,
-			1,
+		let mut vp = oak_core::videoparams::VideoParams::new_basic(
+            1920,
+            1080,
+            oak_core::ocioutils::PixelFormat::F32,
+            4,
+            1,
+            1,
+            0,
+            1,
 		);
 		vp.set_stream_index(stream_index);
 		vp.set_frame_rate(30000, 1001);
@@ -826,7 +826,7 @@ mod tests {
 		assert_eq!(v.width, 1920);
 		assert_eq!(v.height, 1080);
 		assert_eq!(v.frame_rate, oak_core::Rational::new(30000, 1001));
-		assert_eq!(v.pixel_format, oak_common::ocioutils::PixelFormat::F32.code());
+		assert_eq!(v.pixel_format, oak_core::ocioutils::PixelFormat::F32.code());
 		// 300000 ticks at 1/30000 = 10 seconds.
 		assert_eq!(video.duration, oak_core::Rational::new(10, 1));
 	}
@@ -835,7 +835,7 @@ mod tests {
 	fn conversion_skips_subtitles_and_unusable_durations() {
 		let mut desc = FootageDescription::new("ffmpeg");
 		desc.push_stream(video_entry(0, i64::MIN)); // AV_NOPTS_VALUE
-		desc.push_stream(StreamEntry::Subtitle(oak_common::subtitleparams::SubtitleParams::new()));
+		desc.push_stream(StreamEntry::Subtitle(oak_core::subtitleparams::SubtitleParams::new()));
 
 		let streams = streams_from_description(&desc);
 		assert_eq!(streams.len(), 1, "the subtitle stream is skipped");

crates/oak-node/src/nodes/displaytransform.rs

@@ -110,7 +110,7 @@ impl DisplayTransformNode {
 	fn generate_processor(&mut self, core: &mut NodeCore) {
 		let _ = core;
 		// The C++ wraps the color manager, builds a display transform
-		// (`oakcommon_colortransform_init_display`) for the selected
+		// (`oak_core_colortransform_init_display`) for the selected
 		// display/view, resolves the reference color space and creates
 		// the processor via `oakrender_color_processor_create_transform`,
 		// storing it with OcioBase::set_processor. Without a manager (the

crates/oak-node/src/nodes/jobs.rs

@@ -20,11 +20,21 @@
 //! ([`crate::traverser::RenderHooks::resolve`]).
 //! `// CPP-PARITY: app/render/job/footagejob.h, shaderjob.h`.
 
+use oak_core::color::ColorProcessor;
 use oak_core::Rational;
-
 use crate::id::NodeId;
+use crate::nodes::plugin::PluginJobPayload;
 use crate::value::NodeValueRow;
 
+/// Job types
+
+pub enum Job{
+	FootageJob(FootageJobPayload),
+	ShaderJob(ShaderJobPayload),
+	PluginJob(PluginJobPayload),
+	ColorTransformJob
+}
+
 /// C++ `FootageJob` payload: the decode request a footage node emits at
 /// its output instead of a texture. The render hooks decode it at the
 /// request time and replace it with the resulting frame.
@@ -67,6 +77,11 @@ pub struct ShaderJobPayload {
 	pub iterative_input: String,
 }
 
+pub struct ColorTransformJobPayload{
+	pub color_processor: ColorProcessor,
+
+}
+
 impl Default for FootageJobPayload {
 	fn default() -> Self {
 		FootageJobPayload {

crates/oak-node/src/project.rs

@@ -140,29 +140,29 @@ impl Project {
 
 	/// The pipeline working colorspace (project property; ACEScg when the
 	/// setting is absent).
-	pub fn working_color_space(&self) -> oak_common::colormath::WorkingColorSpace {
-		oak_common::colormath::WorkingColorSpace::from_setting(
+	pub fn working_color_space(&self) -> oak_core::colormath::WorkingColorSpace {
+		oak_core::colormath::WorkingColorSpace::from_setting(
 			self.settings.get(SETTING_WORKING_COLOR_SPACE).map(String::as_str).unwrap_or(""),
 		)
 	}
 
 	/// The output/delivery colorspace (project property; sRGB when the
 	/// settings are absent).
-	pub fn output_color_spec(&self) -> oak_common::colormath::OutputColorSpec {
-		oak_common::colormath::OutputColorSpec::from_settings(
+	pub fn output_color_spec(&self) -> oak_core::colormath::OutputColorSpec {
+		oak_core::colormath::OutputColorSpec::from_settings(
 			self.settings.get(SETTING_OUTPUT_GAMUT).map(String::as_str).unwrap_or(""),
 			self.settings.get(SETTING_OUTPUT_TRANSFER).map(String::as_str).unwrap_or(""),
 		)
 	}
 
 	/// Set the pipeline working colorspace property.
-	pub fn set_working_color_space(&mut self, space: oak_common::colormath::WorkingColorSpace) {
+	pub fn set_working_color_space(&mut self, space: oak_core::colormath::WorkingColorSpace) {
 		self.settings
 			.insert(SETTING_WORKING_COLOR_SPACE.to_string(), space.as_setting().to_string());
 	}
 
 	/// Set the output/delivery colorspace properties.
-	pub fn set_output_color_spec(&mut self, spec: oak_common::colormath::OutputColorSpec) {
+	pub fn set_output_color_spec(&mut self, spec: oak_core::colormath::OutputColorSpec) {
 		self.settings
 			.insert(SETTING_OUTPUT_GAMUT.to_string(), spec.gamut.as_setting().to_string());
 		self.settings
@@ -357,8 +357,8 @@ impl Project {
 			_ => {}
 		}
 		// Default location: the shared disk-cache directory (single-lib:
-		// lives in oakcommon, used by oaknode and oakrender alike).
-		oak_common::filefunctions::default_disk_cache_path()
+		// lives in oak_core, used by oaknode and oakrender alike).
+		oak_core::filefunctions::default_disk_cache_path()
 	}
 
 	/// Copy all settings from `src` into `self` (C++

crates/oak-node/src/sequence.rs

@@ -123,9 +123,9 @@ impl SequenceBehavior {
 
 	/// Apply the default video/audio parameters (C++
 	/// `ViewerOutput::set_default_parameters()`; the config lookups read
-	/// the oakcommon config store directly).
+	/// the oak_core config store directly).
 	pub fn set_default_parameters(&mut self) {
-		let config = oak_common::configstore::ConfigStore::instance();
+		let config = oak_core::configstore::ConfigStore::instance();
 		let width = config.get_int(None, "DefaultSequenceWidth", 1920);
 		let height = config.get_int(None, "DefaultSequenceHeight", 1080);
 		let sample_rate = config.get_int(None, "DefaultSequenceAudioFrequency", 48000);

crates/oak-node/src/serializer.rs

@@ -16,7 +16,7 @@
 
 //! Project (de)serialization: the C++ `ProjectSerializer` family.
 //!
-//! XML I/O goes through oakcommon's [`XmlReader`]/[`XmlWriter`] (direct
+//! XML I/O goes through oak_core's [`XmlReader`]/[`XmlWriter`] (direct
 //! Rust calls, single-lib unification). The XML shape mirrors
 //! the C++ `Node::save`/`Project::save` writers (`// CPP-PARITY:
 //! src/node/src/node.cpp:node::save`, `// CPP-PARITY:
@@ -32,7 +32,7 @@
 
 use std::sync::{Arc, Mutex};
 
-use oak_common::xmlutils::{XmlReader, XmlWriter};
+use oak_core::xmlutils::{XmlReader, XmlWriter};
 use oak_core::Rational;
 
 use crate::graph::Graph;
@@ -43,7 +43,7 @@ use crate::project::{NodeRef, Project};
 use crate::value::{NodeValue, ValueType};
 
 /// Minimal XML reader surface the serializer needs (implemented over
-/// oakcommon's `xmlutils`).
+/// oak_core's `xmlutils`).
 pub trait XmlRead {
 	/// Advance to the next start element; false at end/close.
 	fn next_start_element(&mut self) -> bool;
@@ -73,17 +73,17 @@ pub trait XmlWrite {
 	fn characters(&mut self, _text: &str) {}
 }
 
-/// Reader over oakcommon's [`XmlReader`].
+/// Reader over oak_core's [`XmlReader`].
 pub struct XmlReaderBridge {
-	/// The oakcommon reader.
+	/// The oak_core reader.
 	reader: XmlReader,
 	/// Current element name (cached).
 	name: String,
 }
 
-/// Writer over oakcommon's [`XmlWriter`].
+/// Writer over oak_core's [`XmlWriter`].
 pub struct XmlWriterBridge {
-	/// The oakcommon writer.
+	/// The oak_core writer.
 	writer: XmlWriter,
 }
 
@@ -277,7 +277,7 @@ pub fn parse_node_ref(text: &str) -> Option<NodeId> {
 pub fn save(project: &Project) -> crate::error::Result<String> {
 	use crate::error::Error;
 	let mut writer = XmlWriterBridge::new().ok_or(Error::Failed(
-		"oakcommon XML writer unavailable".to_string(),
+		"oak_core XML writer unavailable".to_string(),
 	))?;
 
 	writer.start_element("project");
@@ -510,7 +510,7 @@ pub fn load_with_id_map(
 ) -> crate::error::Result<(Arc<Mutex<Project>>, std::collections::HashMap<u64, NodeId>)> {
 	use crate::error::Error;
 	let mut reader = XmlReaderBridge::new(xml).ok_or(Error::Failed(
-		"oakcommon XML reader unavailable".to_string(),
+		"oak_core XML reader unavailable".to_string(),
 	))?;
 
 	// Detect the root element.

crates/oak-node/src/value.rs

@@ -570,7 +570,7 @@ fn lerp_arr4(a: &[f64; 4], b: &[f64; 4], t: f64) -> [f64; 4] {
 	]
 }
 
-/// Video parameters (plain data; mirrors oakcommon `VideoParams` C++
+/// Video parameters (plain data; mirrors oak_core `VideoParams` C++
 /// fields — the C ABI marshals field-by-field).
 #[derive(Clone, Copy, Debug, Default, PartialEq)]
 pub struct VideoParams {