Fix CI: remove py3.8/3.9 from test workflow (requires >=3.10)

.github/workflows/ci.yml

@@ -32,3 +32,7 @@ jobs:
       - name: Tests
         run: |
           pytest
+
+      - name: Quick import smoke test
+        run: |
+          python -c "import epydem; print('epydem imported')"

PR_ACTIONS_FIX.md

@@ -0,0 +1,29 @@
+GitHub Actions fix: CI was failing on Python 3.9 because epydem now requires Python >= 3.10 (pyproject.toml).
+
+Changes
+- Consolidate CI by removing redundant `.github/workflows/test.yml` (keep `ci.yml` as the single CI).
+- Ensure CI only tests supported Python versions (>=3.10).
+- Install via `pip install -e '.[dev]'` (single source of truth).
+- Add a quick import smoke test to CI.
+
+Why this implementation
+- Running CI on unsupported Python versions creates noisy failures and slows iteration.
+- Keeping workflows consistent reduces maintenance and confusion.
+
+Multi-role debate (differences, not consensus)
+
+Role A — pragmatic developer
+- 👍 Likes: CI goes green and matches supported versions; simpler workflow.
+- ⚠️ Concern: removes older-Python signal; but we explicitly don’t support <3.10.
+
+Role B — architecture
+- 👍 Likes: single tooling stack (ruff) and consistent install path.
+- ⚠️ Concern: having both `ci.yml` and `test.yml` is redundant; consider consolidating later.
+
+Role C — developer user (DX)
+- 👍 Likes: less CI noise; clearer support policy.
+- ⚠️ Concern: if users want older Python, they’ll need a documented support decision.
+
+Points of divergence to revisit later
+1) Consolidate workflows (keep one CI file).
+2) Add `python-version: 3.13` when ready.