Replaces the specialized `stat` system with a more general-purpose
variable system. This includes:
- Renaming `ReactiveStatManager` to `ReactiveVariableManager`
- Changing template syntax from `${key}` to `{{$key}}`
- Replacing `StatsView` with `VariableView` to show declared, plain,
and tag-typed variables
- Updating command `/stat` to `/set`
- Refactoring the reactivity engine to support variable declarations
and tag modifiers via `csv role=declare` blocks
Introduce a shared `dispatchError` signal in the command dispatcher
to unify error reporting across different components. This allows
`CommandLinkManager` to surface errors through the `JournalInput`
UI, ensuring that errors from `:cmd[]` directive clicks are visible
to the user.
Move command parsing and dispatching logic from `CommandLinkManager`
and `JournalInput` into a new `command-dispatcher.ts` module. This
unifies how commands are handled whether they are typed manually or
triggered via `:cmd[]` directive clicks.
hypercross