fix(packaging): force --wheel builds, drop broken sdist path

Greptile P1 + P2 on the slim/heavy split:

- `bin/publish-pypi` heavy `rye build --clean` missing `--wheel`. Without it,
  rye defaults to sdist-then-wheel-from-sdist; the wheel build off the
  unpacked sdist can't resolve adk/'s `force-include = "../src/agentex/lib"`,
  silently producing an empty agentex-sdk wheel. Apply to slim too for
  consistency with CI (which always passes --wheel).
- `adk/pyproject.toml` sdist `include = ["/../src/agentex/lib/**"]` is
  malformed: leading `/` is project-root-relative, `..` navigation outside
  the project root isn't honored by hatchling. Drop the entry; sdist support
  for the dual-package layout is deferred (wheel-only is enforced by CI +
  publish-pypi via `--wheel`).

Verified locally: both wheels build cleanly with `uvx pyproject-build --wheel`
and have disjoint contents (slim: 0 agentex/lib/* files; heavy: 347 lib/*
files + no top-level client surface).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: max-parke-scale

adk/pyproject.toml

@@ -97,9 +97,10 @@ bypass-selection = true
 [tool.hatch.build.targets.wheel.force-include]
 "../src/agentex/lib" = "agentex/lib"
 
+# Sdist deferred: hatchling can't represent the wheel's ../src/agentex/lib
+# force-include in an sdist include list. CI + bin/publish-pypi pass --wheel.
 [tool.hatch.build.targets.sdist]
 include = [
   "/pyproject.toml",
   "/README.md",
-  "/../src/agentex/lib/**",
 ]

bin/publish-pypi

@@ -19,16 +19,17 @@
 
 set -eux
 
-# Slim Stainless-managed client (root) — new `agentex-sdk-client` PyPI name.
+# Slim Stainless-managed client (root) — `agentex-sdk-client` on PyPI.
 mkdir -p dist
-rye build --clean
+rye build --clean --wheel  # --wheel: sdist deferred (see adk/pyproject.toml).
 rye publish --yes --token="${AGENTEX_SDK_CLIENT_PYPI_TOKEN:-$PYPI_TOKEN}"
 
-# Heavy ADK overlay (adk/) — keeps the existing `agentex-sdk` PyPI name.
-# Pins `agentex-sdk-client` which the previous step just published.
+# Heavy ADK overlay (adk/) — `agentex-sdk` on PyPI; pins the slim above.
 (
   cd adk
   mkdir -p dist
-  rye build --clean
+  # --wheel load-bearing: rye's sdist-then-wheel default can't resolve
+  # the force-include of ../src/agentex/lib → silent empty wheel.
+  rye build --clean --wheel
   rye publish --yes --token="${AGENTEX_PYPI_TOKEN:-$PYPI_TOKEN}"
 )