fix(ci): match mammon's Forgejo Actions pattern (no explicit container image)

The previous python:3.12-slim container lacked node, which actions/checkout@v4
requires. The Forgejo runner's default image includes node + apt + curl, so
we can bootstrap python + uv the same way mammon does.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.forgejo/workflows/ci.yml

@@ -1,4 +1,4 @@
-name: CI
+name: tests
 
 on:
   push:
@@ -8,8 +8,6 @@ on:
 jobs:
   test:
     runs-on: docker
-    container:
-      image: python:3.12-slim
     services:
       postgres:
         image: postgres:16
@@ -17,11 +15,6 @@ jobs:
           POSTGRES_USER: test
           POSTGRES_PASSWORD: test
           POSTGRES_DB: ix_test
-        options: >-
-          --health-cmd="pg_isready -U test"
-          --health-interval=5s
-          --health-timeout=3s
-          --health-retries=10
 
     env:
       IX_POSTGRES_URL: postgresql+asyncpg://test:test@postgres:5432/ix_test
@@ -32,17 +25,14 @@ jobs:
 
       - name: Install system deps for python-magic / PyMuPDF
         run: |
-          apt-get update && apt-get install -y --no-install-recommends \
-            libmagic1 libgl1 libglib2.0-0
+          apt-get update -qq
+          apt-get install -y -qq --no-install-recommends libmagic1 libgl1 libglib2.0-0
 
       - name: Install uv
-        run: pip install --no-cache-dir uv
-
-      - name: Install project
-        run: uv sync --extra dev
+        run: curl -LsSf https://astral.sh/uv/install.sh | sh
 
       - name: Lint
-        run: uv run ruff check src tests
+        run: ~/.local/bin/uv run --extra dev ruff check src tests
 
-      - name: Unit + integration tests (no GPU, no live Ollama)
-        run: uv run pytest tests/unit tests/integration -v
+      - name: Unit + integration tests
+        run: ~/.local/bin/uv run --extra dev pytest tests/unit tests/integration -v