Add .prs scene format parser and update trueno to 0.7.4

- Implement Presentar Scene Format (.prs) parser with full validation
- Add Scene, SceneMetadata, Resources, Bindings, Theme, Permissions types
- Validate: version format, kebab-case names, unique widget IDs, binding targets
- Validate: BLAKE3 hashes for remote resources, layout requirements
- Add 54 unit tests embedded in scene module (TDD approach)
- Create 5 example .prs files: minimal, sentiment-demo, image-classifier,
  data-explorer, parameter-tuner
- Add integration tests validating all example files
- Add validate_prs CLI example with verbose mode
- Add comprehensive book chapter for .prs format documentation
- Update trueno dependency from 0.7.3 to 0.7.4
- Update trueno-viz dependency from 0.1.1 to 0.1.2
- All tests pass with 91%+ coverage

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: noahgift

Cargo.lock

@@ -21,8 +21,8 @@ rust-version = "1.75"
 
 [workspace.dependencies]
 # Sovereign Stack
-trueno = "0.7.3"
-trueno-viz = "0.1.1"
+trueno = "0.7.4"
+trueno-viz = "0.1.2"
 
 # Internal crates (version + path for crates.io publishing)
 presentar-core = { version = "0.1.0", path = "crates/presentar-core" }

Cargo.toml

@@ -54,6 +54,7 @@
 # YAML Manifest
 
 - [Manifest Schema](./yaml/manifest-schema.md)
+- [Scene Format (.prs)](./yaml/scene-format.md)
 - [Data Sources](./yaml/data-sources.md)
 - [Model References](./yaml/model-references.md)
 - [Expression Language](./yaml/expression-language.md)