fix(python): restore package discovery for platform wheel builds

The explicit `packages = ["copilot"]` setting excluded the
`copilot.bin` subpackage that `scripts/build-wheels.mjs` creates
dynamically at publish time (containing the bundled CLI binary).
Switch back to `packages.find` with `include = ["copilot*"]`
so `copilot.bin` is discovered during wheel builds while still
being safely skipped during normal dev installs.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: SteveSandersonMS

python/pyproject.toml

@@ -41,8 +41,11 @@ dev = [
     "httpx>=0.24.0",
 ]
 
-[tool.setuptools]
-packages = ["copilot"]
+# Use find with a glob so that the copilot.bin subpackage (created dynamically
+# by scripts/build-wheels.mjs during publishing) is included in platform wheels.
+[tool.setuptools.packages.find]
+where = ["."]
+include = ["copilot*"]
 
 [tool.ruff]
 line-length = 100