ci(ebook-search): run tests via uv on the runner instead of docker

The gitea runner containers have no docker access, so build the test
env with uv from the existing lockfile and run pytest directly:

- test_ebook_search workflow: uv sync --locked + uv run pytest, with
  UV_PYTHON_DOWNLOADS=never so uv uses the nix-provided python 3.14
- add uv to the runner hostPackages (needs a jeeves rebuild to apply)
- ignore nested **/.venv in .dockerignore (uv sync creates one in
  python/ebook_search/docker)
- document the uv test commands in the docker README; the docker test
  image remains for validating the image itself

.dockerignore

@@ -4,6 +4,7 @@
 .pytest_cache
 .ruff_cache
 .venv
+**/.venv
 .env
 .cache
 .claude

.github/workflows/test_ebook_search.yml

@@ -9,13 +9,16 @@ on:
     branches:
       - main
 
+env:
+  UV_PYTHON_DOWNLOADS: never
+
 jobs:
   test-ebook-search:
     runs-on: self-hosted
 
     steps:
       - uses: actions/checkout@v4
-      - name: Build test image
-        run: docker build --file python/ebook_search/docker/Dockerfile --target test --tag ebook-search:test .
+      - name: Install dependencies
+        run: uv sync --locked --project python/ebook_search/docker
       - name: Run ebook search tests
-        run: docker run --rm ebook-search:test
+        run: uv run --project python/ebook_search/docker --no-sync pytest tests/ebook_search --override-ini addopts="-n auto -ra"

python/ebook_search/docker/README.md

@@ -46,22 +46,28 @@ cd python/ebook_search/docker && uv lock
 ## Tests
 
 The main pytest suite excludes `tests/ebook_search` (its dependencies are no longer
-in the nix dev shell). The ebook tests run inside the Docker `test` image instead:
+in the nix dev shell). The `test ebook search` CI workflow runs them in a uv env
+built from the lockfile in this directory — same commands work locally from the
+repo root (the `--override-ini` drops the main suite's ignore):
+
+```sh
+uv sync --locked --project python/ebook_search/docker
+uv run --project python/ebook_search/docker --no-sync pytest tests/ebook_search --override-ini addopts="-n auto -ra"
+```
+
+They can also run inside the Docker `test` image, which validates the image itself:
 
 ```sh
 python -m python.ebook_search.docker.containers test
 ```
 
-or the raw docker equivalent (what the `test ebook search` CI workflow runs):
+or the raw docker equivalent:
 
 ```sh
 docker build --file python/ebook_search/docker/Dockerfile --target test --tag ebook-search:test .
 docker run --rm ebook-search:test
 ```
 
-To run them on the host instead, use a venv with the ebook deps installed and
-override the ignore: `pytest tests/ebook_search -o addopts="-ra"`.
-
 ## Configuration
 
 The compose service loads the repo root `.env` into the container via `env_file`.

systems/jeeves/runners/nix_builder.nix

@@ -138,6 +138,7 @@ in
                 nixos-rebuild
                 nodejs
                 treefmt
+                uv
                 wget
               ];
             };