docs(deps[gp-sphinx]) bump 0.0.1a13 → 0.0.1a16.dev4

why: gp-sphinx 0.0.1a16.dev4 ships the sphinx-vite-builder
consolidation (PR git-pull/gp-sphinx#29). The new package replaces
gp-sphinx-vite, fixes the unstyled-wheel bug from a15, and adds a
hatchling build-hook variant alongside the existing PEP 517 backend.

what:
- bump every gp-sphinx workspace pin in pyproject.toml + uv.lock
- add [tool.uv].prerelease = "allow" so uv resolves the *.dev4 pins
- drop legacy gp-sphinx-vite references (the package no longer exists)

Author: tony

pyproject.toml

@@ -64,9 +64,9 @@ Changes = "https://github.com/vcs-python/libvcs/blob/master/CHANGES"
 [dependency-groups]
 dev = [
   # Docs
-  "gp-sphinx==0.0.1a13",
-  "sphinx-autodoc-api-style==0.0.1a13",
-  "sphinx-autodoc-pytest-fixtures==0.0.1a13",
+  "gp-sphinx==0.0.1a16.dev4",
+  "sphinx-autodoc-api-style==0.0.1a16.dev4",
+  "sphinx-autodoc-pytest-fixtures==0.0.1a16.dev4",
   "gp-libs",
   "sphinx-autobuild",
   # Testing
@@ -85,9 +85,9 @@ dev = [
 ]
 
 docs = [
-  "gp-sphinx==0.0.1a13",
-  "sphinx-autodoc-api-style==0.0.1a13",
-  "sphinx-autodoc-pytest-fixtures==0.0.1a13",
+  "gp-sphinx==0.0.1a16.dev4",
+  "sphinx-autodoc-api-style==0.0.1a16.dev4",
+  "sphinx-autodoc-pytest-fixtures==0.0.1a16.dev4",
   "gp-libs",
   "sphinx-autobuild",
 ]
@@ -115,6 +115,13 @@ libvcs = "libvcs.pytest_plugin"
 requires = ["hatchling"]
 build-backend = "hatchling.build"
 
+[tool.uv]
+# `[DO NOT MERGE]`: gp-sphinx workspace ships on the 0.0.1a16.devN
+# pre-release track until the sphinx-vite-builder integration is
+# proven end-to-end. uv otherwise refuses to resolve `*.dev4`
+# markers without this allow.
+prerelease = "allow"
+
 [tool.uv.exclude-newer-package]
 # git-pull packages release in lockstep with their workspaces, so a
 # fresh release blocking on the 3-day cooldown blocks every
@@ -125,7 +132,6 @@ build-backend = "hatchling.build"
 gp-libs = false
 gp-furo-theme = false
 gp-sphinx = false
-gp-sphinx-vite = false
 sphinx-autodoc-api-style = false
 sphinx-autodoc-argparse = false
 sphinx-autodoc-docutils = false