Vendor Bevy rendering crates (Phase 1 complete)

Closes #6, #7, #8, #9, #10
Refs #2, #122

Vendored bevy_render, bevy_core_pipeline, and bevy_pbr from Bevy v0.17.2
(commit 566358363126dd69f6e457e47f306c68f8041d2a) into libmarathon.

- ~51K LOC vendored to crates/libmarathon/src/render/
- Merged bevy_render_macros into crates/macros/
- Fixed 773→0 compilation errors
- Updated dependencies (encase 0.10→0.11, added 4 new deps)
- Removed bevy_render/pbr/core_pipeline from app Cargo features

All builds passing, macOS smoke test successful.

Signed-off-by: Sienna Meridian Satterwhite <sienna@r3t.io>

crates/macros/src/lib.rs

@@ -0,0 +1,152 @@
+#![expect(missing_docs, reason = "Not all docs are written yet, see #3492.")]
+#![cfg_attr(docsrs, feature(doc_cfg))]
+
+mod as_bind_group;
+mod extract_component;
+mod extract_resource;
+mod specializer;
+
+use bevy_macro_utils::{derive_label, BevyManifest};
+use proc_macro::TokenStream;
+use quote::format_ident;
+use syn::{parse_macro_input, DeriveInput};
+
+pub(crate) fn bevy_render_path() -> syn::Path {
+    // Use our vendored render module
+    // When used from within libmarathon, use crate::render
+    // When used from other crates, they would use libmarathon::render
+    syn::parse_quote!(crate::render)
+}
+
+pub(crate) fn bevy_ecs_path() -> syn::Path {
+    // Still use bevy_ecs from the external crate
+    BevyManifest::shared().get_path("bevy_ecs")
+}
+
+#[proc_macro_derive(ExtractResource)]
+pub fn derive_extract_resource(input: TokenStream) -> TokenStream {
+    extract_resource::derive_extract_resource(input)
+}
+
+/// Implements `ExtractComponent` trait for a component.
+///
+/// The component must implement [`Clone`].
+/// The component will be extracted into the render world via cloning.
+/// Note that this only enables extraction of the component, it does not execute the extraction.
+/// See `ExtractComponentPlugin` to actually perform the extraction.
+///
+/// If you only want to extract a component conditionally, you may use the `extract_component_filter` attribute.
+///
+/// # Example
+///
+/// ```no_compile
+/// use bevy_ecs::component::Component;
+/// use bevy_render_macros::ExtractComponent;
+///
+/// #[derive(Component, Clone, ExtractComponent)]
+/// #[extract_component_filter(With<Camera>)]
+/// pub struct Foo {
+///     pub should_foo: bool,
+/// }
+///
+/// // Without a filter (unconditional).
+/// #[derive(Component, Clone, ExtractComponent)]
+/// pub struct Bar {
+///     pub should_bar: bool,
+/// }
+/// ```
+#[proc_macro_derive(ExtractComponent, attributes(extract_component_filter))]
+pub fn derive_extract_component(input: TokenStream) -> TokenStream {
+    extract_component::derive_extract_component(input)
+}
+
+#[proc_macro_derive(
+    AsBindGroup,
+    attributes(
+        uniform,
+        storage_texture,
+        texture,
+        sampler,
+        bind_group_data,
+        storage,
+        bindless,
+        data
+    )
+)]
+pub fn derive_as_bind_group(input: TokenStream) -> TokenStream {
+    let input = parse_macro_input!(input as DeriveInput);
+
+    as_bind_group::derive_as_bind_group(input).unwrap_or_else(|err| err.to_compile_error().into())
+}
+
+/// Derive macro generating an impl of the trait `RenderLabel`.
+///
+/// This does not work for unions.
+#[proc_macro_derive(RenderLabel)]
+pub fn derive_render_label(input: TokenStream) -> TokenStream {
+    let input = parse_macro_input!(input as DeriveInput);
+    let mut trait_path = bevy_render_path();
+    trait_path
+        .segments
+        .push(format_ident!("render_graph").into());
+    trait_path
+        .segments
+        .push(format_ident!("RenderLabel").into());
+    derive_label(input, "RenderLabel", &trait_path)
+}
+
+/// Derive macro generating an impl of the trait `RenderSubGraph`.
+///
+/// This does not work for unions.
+#[proc_macro_derive(RenderSubGraph)]
+pub fn derive_render_sub_graph(input: TokenStream) -> TokenStream {
+    let input = parse_macro_input!(input as DeriveInput);
+    let mut trait_path = bevy_render_path();
+    trait_path
+        .segments
+        .push(format_ident!("render_graph").into());
+    trait_path
+        .segments
+        .push(format_ident!("RenderSubGraph").into());
+    derive_label(input, "RenderSubGraph", &trait_path)
+}
+
+/// Derive macro generating an impl of the trait `Specializer`
+///
+/// This only works for structs whose members all implement `Specializer`
+#[proc_macro_derive(Specializer, attributes(specialize, key, base_descriptor))]
+pub fn derive_specialize(input: TokenStream) -> TokenStream {
+    specializer::impl_specializer(input)
+}
+
+/// Derive macro generating the most common impl of the trait `SpecializerKey`
+#[proc_macro_derive(SpecializerKey)]
+pub fn derive_specializer_key(input: TokenStream) -> TokenStream {
+    specializer::impl_specializer_key(input)
+}
+
+#[proc_macro_derive(ShaderLabel)]
+pub fn derive_shader_label(input: TokenStream) -> TokenStream {
+    let input = parse_macro_input!(input as DeriveInput);
+    let mut trait_path = bevy_render_path();
+    trait_path
+        .segments
+        .push(format_ident!("render_phase").into());
+    trait_path
+        .segments
+        .push(format_ident!("ShaderLabel").into());
+    derive_label(input, "ShaderLabel", &trait_path)
+}
+
+#[proc_macro_derive(DrawFunctionLabel)]
+pub fn derive_draw_function_label(input: TokenStream) -> TokenStream {
+    let input = parse_macro_input!(input as DeriveInput);
+    let mut trait_path = bevy_render_path();
+    trait_path
+        .segments
+        .push(format_ident!("render_phase").into());
+    trait_path
+        .segments
+        .push(format_ident!("DrawFunctionLabel").into());
+    derive_label(input, "DrawFunctionLabel", &trait_path)
+}