fix: use uv with dependency-groups for RTD builds

- Switch RTD from pip to uv with custom build commands
- Remove duplicate [project.optional-dependencies] in favor of [dependency-groups]
- Pin sphinx<8 (experimaestro.sphinx uses restify removed in Sphinx 8)
- Remove docs/requirements.txt (now unused)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: bpiwowar

.readthedocs.yml

@@ -8,13 +8,9 @@ build:
   os: "ubuntu-22.04"
   tools:
     python: "3.11"
-
-sphinx:
-  configuration: docs/source/conf.py
-
-python:
-  install:
-    - method: pip
-      path: .
-      extra_requirements:
-        - docs
+  commands:
+    - asdf plugin add uv
+    - asdf install uv latest
+    - asdf global uv latest
+    - uv sync --group docs
+    - .venv/bin/python -m sphinx -b html docs/source $READTHEDOCS_OUTPUT/html

docs/requirements.txt

@@ -32,22 +32,6 @@ dependencies = [
     "experimaestro",
 ]
 
-[project.optional-dependencies]
-dev = [
-    "pytest",
-    "docutils",
-    "sphobjinv",
-    "sphinx<8",
-]
-docs = [
-    "datamaestro>=0.8.5",
-    "myst-parser>=0.18.0",
-    "sphinx>=6,<8",
-    "sphinx-codeautolink>=0.15.0",
-    "sphinx-rtd-theme>=3.1.0",
-    "sphinx-toolbox>=4.1.2",
-]
-
 [project.urls]
 Homepage = "https://github.com/experimaestro/datamaestro_text"
 Documentation = "https://datamaestro-text.readthedocs.io/en/latest/"
@@ -96,7 +80,7 @@ docs = [
     "datamaestro>=0.8.5",
     "experimaestro>=2.0.0b29",  # Pre-release needed for EnumType.name() fix
     "myst-parser>=0.18.0",
-    "sphinx>=6",
+    "sphinx>=6,<8",  # experimaestro.sphinx uses restify removed in Sphinx 8
     "sphinx-codeautolink>=0.15.0",
     "sphinx-rtd-theme>=3.1.0",
     "sphinx-toolbox>=4.1.2",