Add cross-platform canvas orchestration and typed composer Enable native ARM dependencies, macOS Copilot orchestration, portable service supervision, CPU dictation, and a shared N-key speak-or-type composer. Co-authored-by: Copilot <[email protected]> Copilot-Session: f68442b1-fa8f-46a0-9689-81710613bbd4

# config

Shared Bazel build configurations and platform definitions.

## Usage

Reference in BUILD files:

```starlark
load("//config:defs.bzl", ...)
```