py(deps[uv]) Bump gp-sphinx workspace pins to 0.0.1a12

why: gp-sphinx cut 0.0.1a12 with a single iOS Safari fix --
the sidebar logo no longer disappears during SPA navigation.
The previous order ran the DOM swap before history.pushState,
so the new <img src=...> in the sidebar resolved its relative
URL against the OLD page's directory and 404'd on every
cross-depth navigation. Chromium and Gecko queue <img> URL
resolution as an element task and read document.baseURI AFTER
pushState fires on the same call stack, so they tolerated the
bug. WebKit (iOS Safari) resolves eagerly, and inside
document.startViewTransition the failed-load state was then
committed into the new snapshot during the cross-fade. Most
visible on iPad with Request Desktop Site. Tracking the new
alpha picks the fix up on the next docs build at
https://libtmux-mcp.git-pull.com/.

what:
- pyproject.toml: gp-sphinx, sphinx-autodoc-api-style, and
  sphinx-autodoc-fastmcp all move 0.0.1a11 -> 0.0.1a12 in
  [dependency-groups] dev and docs.
- uv.lock regenerated; gp-sphinx workspace siblings co-
  resolved to 0.0.1a12.

Author: tony

pyproject.toml

@@ -56,9 +56,9 @@ libtmux-mcp = "libtmux_mcp:main"
 [dependency-groups]
 dev = [
   # Docs
-  "gp-sphinx==0.0.1a11",
-  "sphinx-autodoc-api-style==0.0.1a11",
-  "sphinx-autodoc-fastmcp==0.0.1a11",
+  "gp-sphinx==0.0.1a12",
+  "sphinx-autodoc-api-style==0.0.1a12",
+  "sphinx-autodoc-fastmcp==0.0.1a12",
   "gp-libs",
   "sphinx-autobuild",
   # Testing
@@ -82,9 +82,9 @@ dev = [
 ]
 
 docs = [
-  "gp-sphinx==0.0.1a11",
-  "sphinx-autodoc-api-style==0.0.1a11",
-  "sphinx-autodoc-fastmcp==0.0.1a11",
+  "gp-sphinx==0.0.1a12",
+  "sphinx-autodoc-api-style==0.0.1a12",
+  "sphinx-autodoc-fastmcp==0.0.1a12",
   "gp-libs",
   "sphinx-autobuild",
 ]