[chore] Stricter ruff rules (#282)

* [chore] Stricter ruff rules

* [chore] Furture lint rules and removal of flake8

* [ci] Bump github action versions

* [chore] Add additional test coverage

* Revert RNG switch to np.random.default_rng()

Restore use of the global np.random state in pseudo_Obs (misc.py) and the
prior id generation (fits.py), keeping seed behavior unchanged. The switch
to a module-local generator is out of scope for this lint-focused PR.

* Silence NPY002 on intentional legacy np.random calls

The RNG migration was reverted to keep np.random.seed() behavior, so add
per-line noqa: NPY002 on the three legacy np.random calls instead of the
Generator API.

* [Fix] Fix exception messages

.github/workflows/docs.yml

@@ -14,7 +14,7 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: "3.12"
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Updated documentation
         run: |
           git config --global user.email "${{ github.actor }}@users.noreply.github.com"

.github/workflows/examples.yml

@@ -21,7 +21,7 @@ jobs:
 
     steps:
       - name: Checkout source
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup python
         uses: actions/setup-python@v5

.github/workflows/flake8.yml

@@ -1,26 +0,0 @@
-name: flake8
-
-on:
-  push:
-    branches:
-      - master
-      - develop
-  pull_request:
-
-jobs:
-  flake8-lint:
-    runs-on: ubuntu-latest
-    name: Lint
-    steps:
-      - name: Check out source repository
-        uses: actions/checkout@v4
-      - name: Set up Python environment
-        uses: actions/setup-python@v5
-        with:
-          python-version: "3.12"
-      - name: flake8 Lint
-        uses: py-actions/flake8@v2
-        with:
-          ignore: "E501,W503"
-          exclude: "__init__.py, input/__init__.py"
-          path: "pyerrors"

.github/workflows/pytest.yml

@@ -26,7 +26,7 @@ jobs:
 
     steps:
       - name: Checkout source
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup python
         uses: actions/setup-python@v5

.github/workflows/release.yml

@@ -10,7 +10,7 @@ jobs:
     name: Build sdist and wheel
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
       name: Checkout repository
 
     - uses: actions/setup-python@v5

.github/workflows/ruff.yml

@@ -9,7 +9,7 @@ jobs:
   ruff:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: astral-sh/ruff-action@v2
+      - uses: actions/checkout@v6
+      - uses: astral-sh/ruff-action@v3
         with:
           src: "./pyerrors"