Fix local installer compatibility on newer hosts

Made-with: Cursor

ansible/roles/open_webui/tasks/main.yml

@@ -4,15 +4,58 @@
     state: directory
     mode: "0755"
 
-- name: Create Open WebUI virtual environment
+- name: Create uv helper virtual environment
   command:
     argv:
       - "{{ courseware_python_bin }}"
       - -m
       - venv
+      - "{{ courseware_uv_venv_dir }}"
+  args:
+    creates: "{{ courseware_uv_venv_dir }}/bin/python"
+
+- name: Install uv helper
+  command:
+    argv:
+      - "{{ courseware_uv_venv_dir }}/bin/python"
+      - -m
+      - pip
+      - install
+      - --upgrade
+      - pip
+      - uv
+  args:
+    creates: "{{ courseware_uv_venv_dir }}/bin/uv"
+
+- name: Check Open WebUI virtual environment Python version
+  command:
+    argv:
+      - "{{ courseware_venvs_dir }}/open-webui/bin/python"
+      - -c
+      - "import importlib.util, sys; expected = tuple(map(int, '{{ courseware_open_webui_python_version }}'.split('.')[:2])); ok = sys.version_info[:len(expected)] == expected and importlib.util.find_spec('pip') is not None; raise SystemExit(0 if ok else 1)"
+  register: courseware_open_webui_python_check
+  changed_when: false
+  failed_when: false
+
+- name: Remove incompatible Open WebUI virtual environment
+  file:
+    path: "{{ courseware_venvs_dir }}/open-webui"
+    state: absent
+  when: courseware_open_webui_python_check.rc != 0
+
+- name: Create Open WebUI virtual environment
+  command:
+    argv:
+      - "{{ courseware_uv_venv_dir }}/bin/uv"
+      - venv
+      - --seed
+      - --python
+      - "{{ courseware_open_webui_python_version }}"
       - "{{ courseware_venvs_dir }}/open-webui"
   args:
     creates: "{{ courseware_venvs_dir }}/open-webui/bin/python"
+  environment:
+    UV_PYTHON_INSTALL_DIR: "{{ courseware_uv_python_install_dir }}"
 
 - name: Upgrade Open WebUI venv tooling
   command: