v0.5.0

Added

• Re-exported thiserror::Error as masterror::Error, making it possible to
  derive domain errors without an extra dependency. The derive supports
  #[from] conversions, validates #[error(transparent)] wrappers, and mirrors
  thiserror's ergonomics.
• Added BrowserConsoleError::context() for retrieving browser-provided
  diagnostics when console logging fails.

Changed

• README generation now pulls from crate metadata via the build script while
  staying inert during cargo package, preventing dirty worktrees in release
  workflows.

Documentation

• Documented deriving custom errors via masterror::Error and expanded the
  browser console section with context-handling guidance.
• Added a release checklist and described the automated README sync process.

Tests

• Added regression tests covering derive behaviour (including #[from] and
  transparent wrappers) and ensuring the README stays in sync with its
  template.
• Added a guard test that enforces the AppResult<_> alias over raw
  Result<_, AppError> usages within the crate.