Migrate the backend from pip to uv

Replace requirements.txt with a uv workspace and lockfile, install the five tavolo packages from packages/* in development and non-editable in the image, and build the Docker image with uv. Move dev tools to a PEP 735 dependency group and refresh the locked dependency versions.

server/packages/tavolo-app/README.md

@@ -29,7 +29,7 @@ The deployable tavolo application: the composition root wiring
 ## Development (from `packages/tavolo-app/`)
 
 ```sh
-.venv/bin/python -m mypy --namespace-packages --explicit-package-bases \
+uv run mypy --namespace-packages --explicit-package-bases \
   src/tavolo/app.py \
   src/tavolo/config.py \
   src/tavolo/telemetry.py \

server/packages/tavolo-app/pyproject.toml

@@ -31,10 +31,6 @@ dependencies = [
 ]
 
 [project.optional-dependencies]
-dev = [
-    "mypy",
-    "httpx-ws",
-]
 otel = [
     "kaya-otel>=0.0.7",
     "opentelemetry-instrumentation-asyncpg>=0.66b0",
@@ -42,6 +38,12 @@ otel = [
     "opentelemetry-instrumentation-system-metrics>=0.66b0",
 ]
 
+[dependency-groups]
+dev = [
+    "mypy",
+    "httpx-ws",
+]
+
 [tool.setuptools.packages.find]
 where = ["src"]
 namespaces = true

server/packages/tavolo-briscola/README.md

@@ -92,8 +92,8 @@ the match), so the hand-ack timeout is accepted but unused.
 ## Development (from `server/`)
 
 ```sh
-.venv/bin/python -m unittest discover -s packages/tavolo-briscola/tests
-.venv/bin/python -m mypy -p tavolo.briscola
+uv run python -m unittest discover -s packages/tavolo-briscola/tests
+uv run mypy -p tavolo.briscola
 ```
 
 `test_engine.py`/`test_plugin.py` cover the two classic variants;

server/packages/tavolo-platform/README.md

@@ -58,8 +58,8 @@ examples are [`tavolo-scopone`](../tavolo-scopone/README.md),
 ## Development (from `server/`)
 
 ```sh
-.venv/bin/python -m unittest discover -s packages/tavolo-platform/tests
-.venv/bin/python -m mypy -p tavolo.platform
+uv run python -m unittest discover -s packages/tavolo-platform/tests
+uv run mypy -p tavolo.platform
 ```
 
 Tests run fully in-process against a `DummyEngine` (a two-player toy game

server/packages/tavolo-scopa/README.md

@@ -36,8 +36,8 @@ application composition root.
 ## Development (from `server/`)
 
 ```sh
-.venv/bin/python -m unittest discover -s packages/tavolo-scopa/tests
-.venv/bin/python -m mypy -p tavolo.scopa
+uv run python -m unittest discover -s packages/tavolo-scopa/tests
+uv run mypy -p tavolo.scopa
 ```
 
 `test_engine.py` covers the pure rules; `test_plugin.py` covers the

server/packages/tavolo-scopone/README.md

@@ -31,8 +31,8 @@ application composition root.
 ## Development (from `server/`)
 
 ```sh
-.venv/bin/python -m unittest discover -s packages/tavolo-scopone/tests
-.venv/bin/python -m mypy -p tavolo.scopone
+uv run python -m unittest discover -s packages/tavolo-scopone/tests
+uv run mypy -p tavolo.scopone
 ```
 
 `test_engine.py` covers the pure rules; `test_plugin.py` covers the