py(deps): gp-sphinx 0.0.1a6 -> 0.0.1a7

why: Pick up the sphinx-argparse-neo multi-page duplicate-label
scoping fix landed in gp-sphinx PR #16, and clean up two stale
references that have been keeping this branch's CI red since the
local _ext migration:

- The [tool.uv.sources] block pinned gp-sphinx /
  sphinx-autodoc-api-style / sphinx-autodoc-fastmcp at
  ../gp-sphinx/packages/*, which only resolves in the local dev
  workspace — CI failed at uv sync on every push since the block
  was introduced.
- tests/docs/_ext/test_fastmcp_autodoc.py imported the
  fastmcp_autodoc module from the local docs/_ext/ directory that
  was removed alongside the migration to the gp-sphinx
  sphinx-autodoc-fastmcp package. The test file (and its sibling
  conftest.py / __init__.py / parent tests/docs/ package) were
  orphaned and made pytest fail at collection time on every build
  matrix job. The equivalent tests now live in the
  sphinx-autodoc-fastmcp package under gp-sphinx.
what:
- Drop the [tool.uv.sources] block so all three packages resolve
  from PyPI in every environment
- Bump gp-sphinx and sibling package pins from 0.0.1a6 to 0.0.1a7
- Delete the orphaned tests/docs/_ext/ directory and its empty
  tests/docs/ parent package
- Regenerate uv.lock

Author: tony

pyproject.toml

@@ -53,18 +53,12 @@ Changes = "https://github.com/tmux-python/libtmux-mcp/blob/master/CHANGES"
 [project.scripts]
 libtmux-mcp = "libtmux_mcp:main"
 
-# Sibling clone: ../gp-sphinx (git-pull/gp-sphinx). Override PyPI pins for local dev.
-[tool.uv.sources]
-gp-sphinx = { path = "../gp-sphinx/packages/gp-sphinx", editable = true }
-sphinx-autodoc-api-style = { path = "../gp-sphinx/packages/sphinx-autodoc-api-style", editable = true }
-sphinx-autodoc-fastmcp = { path = "../gp-sphinx/packages/sphinx-autodoc-fastmcp", editable = true }
-
 [dependency-groups]
 dev = [
   # Docs
-  "gp-sphinx==0.0.1a6",
-  "sphinx-autodoc-api-style==0.0.1a6",
-  "sphinx-autodoc-fastmcp==0.0.1a6",
+  "gp-sphinx==0.0.1a7",
+  "sphinx-autodoc-api-style==0.0.1a7",
+  "sphinx-autodoc-fastmcp==0.0.1a7",
   "gp-libs",
   "sphinx-autobuild",
   # Testing
@@ -85,9 +79,9 @@ dev = [
 ]
 
 docs = [
-  "gp-sphinx==0.0.1a6",
-  "sphinx-autodoc-api-style==0.0.1a6",
-  "sphinx-autodoc-fastmcp==0.0.1a6",
+  "gp-sphinx==0.0.1a7",
+  "sphinx-autodoc-api-style==0.0.1a7",
+  "sphinx-autodoc-fastmcp==0.0.1a7",
   "gp-libs",
   "sphinx-autobuild",
 ]