Merge branch 'main' into jax-mccallq

Resolve the mccall_q.md conflict by taking main's version.

The JAX conversion is being dropped: mccall_q is inherently sequential
Q-learning, which the style guide directs to Numba rather than JAX (see
styleguide/jax.md, "Sequential: Numba wins"). Main has also since moved
these functions to the np.random.default_rng Generator API in #959.

The prose, heading and figure-legend improvements from this branch are
reapplied in the next commit.

Author: jstac

.github/dependabot.yml

@@ -11,3 +11,16 @@ updates:
       prefix: ⬆️
     schedule:
       interval: weekly
+
+  - package-ecosystem: "conda"
+    directory: "/"
+    commit-message:
+      prefix: ⬆️
+    schedule:
+      interval: weekly
+    ignore:
+      - dependency-name: "jupyter-book"
+        versions: [">=2.0"]
+      - dependency-name: "python"
+        # Python version should be constrained by the anaconda distribution version
+        versions: [">0"]

.github/runs-on.yml

@@ -2,4 +2,5 @@ images:
   quantecon_ubuntu2404:
     platform: "linux"
     arch: "x64"
-    ami: "ami-09baf66e396fa7cfd"
+    ami: "ami-0edec81935264b6d3"
+    region: "us-west-2"

.github/workflows/cache.yml

@@ -6,26 +6,25 @@ on:
   workflow_dispatch:
 jobs:
   cache:
-    runs-on: "runs-on=${{ github.run_id }}/family=g4dn.2xlarge/image=quantecon_ubuntu2404/disk=large"
+    runs-on: "runs-on=${{ github.run_id }}/family=g4dn.2xlarge/image=quantecon_ubuntu2404/volume=80gb/spot=false"
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
         with:
           ref: ${{ github.event.pull_request.head.sha }}
       - name: Setup Anaconda
-        uses: conda-incubator/setup-miniconda@v3
+        uses: conda-incubator/setup-miniconda@v4
         with:
           auto-update-conda: true
           auto-activate-base: true
           miniconda-version: 'latest'
           python-version: "3.13"
           environment-file: environment.yml
           activate-environment: quantecon
-      - name: Install JAX, Numpyro, PyTorch
+      - name: Install JAX and Numpyro
         shell: bash -l {0}
         run: |
-          pip install --pre torch torchvision torchaudio --index-url https://download.pytorch.org/whl/nightly/cu128
-          pip install --upgrade "jax[cuda12-local]==0.6.2"
-          pip install numpyro  
+          pip install -U "jax[cuda13]"
+          pip install numpyro
           python scripts/test-jax-install.py
       - name: Check nvidia drivers
         shell: bash -l {0}
@@ -36,13 +35,13 @@ jobs:
         run: |
           jb build lectures --path-output ./ -W --keep-going
       - name: Upload Execution Reports
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         if: failure()
         with:
           name: execution-reports
           path: _build/html/reports
       - name: Upload "_build" folder (cache)
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: build-cache
           path: _build