Remove the Mutex from Animated

[pragmatrix]

This is the first step for making the animation system simpler, but it currently has an essential problem which come from the fact that the visor layout depends on the expansion factor, which is an animated value.

[Copilot]

Pull request overview

This PR removes the internal Mutex from animation::Animated, shifting the API to require mutable access for progressing animations and returning references instead of owned values. It updates downstream call sites (desktop + examples) to dereference returned references or use latest_value() where mutation/progression isn’t desired/possible.

Changes:

• Refactor Animated<T> to store AnimatedInner<T> directly (no mutex), make value() require &mut self and return &T, and add latest_value() for non-progressing reads.
• Update desktop presenters/systems and the logs example to accommodate reference-returning getters (*value, *final_value, latest_value()).
• Adjust camera access to align with the new Animated API (DesktopSystem::camera(&mut self) -> &PixelCamera).

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
animation/src/animated.rs	Removes mutex-based interior mutability; changes read APIs to return references and requires &mut to progress animations.
desktop/src/desktop.rs	Updates camera retrieval to dereference the new &PixelCamera return.
desktop/src/desktop_system.rs	Changes camera() accessor signature to return a reference and require &mut self.
desktop/src/desktop_system/layout_effects.rs	Updates camera locking and hover placement composition to use dereferenced refs / latest_value().
desktop/src/desktop_system/presentation.rs	Updates originating instance transform read to use latest_value().
desktop/src/instance_presenter.rs	Updates animation application to dereference Animated::value() results.
desktop/src/projects/launcher_presenter.rs	Updates alpha usage and final_value() comparisons for ref-returning APIs.
desktop/src/projects/project_presenter.rs	Updates hover alpha usage for ref-returning APIs.
examples/logs/examples/logs.rs	Updates animated value reads to dereference refs and uses latest_value() for logging.