Update readthedocs config to use UV

.readthedocs.yaml

@@ -1,25 +1,34 @@
+# .readthedocs.yaml
 # Read the Docs configuration file
 # See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
 
-# Required
 version: 2
 
-# Set the OS, Python version, and other tools you might need
 build:
   os: ubuntu-24.04
   tools:
     python: "3.11"
+
   jobs:
-    post_create_environment:
-      # Install poetry
-      - python -m pip install poetry==1.8.3
-    post_install:
-      # Install dependencies
-      - VIRTUAL_ENV=$READTHEDOCS_VIRTUALENV_PATH poetry install --with docs
+    # 1️⃣ Install uv once before we create the virtual-env
+    pre_create_environment:
+      - |
+        # Install uv via the official installer with curl
+        curl -Ls https://astral.sh/uv/install.sh | bash
+
+    # 2️⃣ Create the virtual-env with uv
+    create_environment:
+      - ~/.local/bin/uv venv "${READTHEDOCS_VIRTUALENV_PATH}"
+
+    # 3️⃣ Sync docs dependencies (uses uv.lock if present)
+    install:
+      - |
+        UV_PROJECT_ENVIRONMENT="${READTHEDOCS_VIRTUALENV_PATH}" \
+          ~/.local/bin/uv sync --frozen --group docs
 
 # Build documentation in the "docs/" directory with Sphinx
 sphinx:
-   configuration: docs/conf.py
+  configuration: docs/conf.py
 
 formats:
   - pdf