Merge branch 'master' into fix/clarify-print-dims-198

Author: florence-bockting

.Rbuildignore

@@ -24,3 +24,6 @@ vignettes/loo2-non-factorized_cache/*
 ^release-prep\.R$
 ^_pkgdown\.yml$
 ^pkgdown$
+^touchstone$
+^.git-blame-ignore-revs
+^notes-release.md

.git-blame-ignore-revs

@@ -0,0 +1,8 @@
+# swap to lf
+cb64cf13afe42e91b5391fc8acd90fba3b726a70
+53ecde47fd2c4815e7a339983571dc8dd90208af
+2a916b1e1c349d54fa60a9ba17f83242e7b9930a
+
+# .gitattributes junk commits
+62be68d65f7ba5c2641956ce94472a2747a20856
+ec6080c85010d61f077291e4cb02e9fbbc9c9a92

.gitattributes

@@ -1,4 +1,6 @@
 * text=auto
 data/* binary
-src/* text=lf
-R/* text=lf
+src/* text eol=lf
+R/* text eol=lf
+*.rda binary
+

.github/CONTRIBUTING.md

@@ -54,3 +54,5 @@ new to you.
 Please note that the loo project follows the Stan project's 
 [Code of Conduct](https://discourse.mc-stan.org/t/announcing-our-new-stan-code-of-conduct/23764).
 By contributing to this project you agree to abide by its terms.
+
+All contributions must follow the [Stan AI Contribution Policy](https://github.com/stan-dev/stan/wiki/AI-Contribution-Policy).

.github/workflows/R-CMD-check.yaml

@@ -30,7 +30,7 @@ jobs:
       R_KEEP_PKG_SOURCE: yes
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - uses: r-lib/actions/setup-pandoc@v2
 

.github/workflows/pkgdown.yaml

@@ -23,7 +23,7 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - uses: r-lib/actions/setup-pandoc@v2
 

.github/workflows/test-coverage.yaml

@@ -7,7 +7,9 @@ on:
 
 name: test-coverage.yaml
 
-permissions: read-all
+permissions:
+  contents: read
+  id-token: write
 
 jobs:
   test-coverage:
@@ -16,7 +18,7 @@ jobs:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - uses: r-lib/actions/setup-r@v2
         with:
@@ -38,14 +40,14 @@ jobs:
           covr::to_cobertura(cov)
         shell: Rscript {0}
 
-      - uses: codecov/codecov-action@v5
+      - uses: codecov/codecov-action@v7
         with:
-          # Fail if error if not on PR, or if on PR and token is given
+          # Fail if error if not on PR, or if on PR and token is given--dependabot is treated like fork
           fail_ci_if_error: ${{ github.event_name != 'pull_request' || secrets.CODECOV_TOKEN }}
           files: ./cobertura.xml
           plugins: noop
           disable_search: true
-          token: ${{ secrets.CODECOV_TOKEN }}
+          use_oidc: true
 
       - name: Show testthat output
         if: always()
@@ -56,7 +58,7 @@ jobs:
 
       - name: Upload test results
         if: failure()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: coverage-test-failures
           path: ${{ runner.temp }}/package

.github/workflows/touchstone-comment.yaml

@@ -0,0 +1,47 @@
+name: Continuous Benchmarks (Comment)
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.run_id }}
+  cancel-in-progress: true
+
+on:
+  workflow_run:
+    workflows: ["Continuous Benchmarks (Receive)"]
+    types: [completed]
+
+jobs:
+  comment:
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      pull-requests: write
+    if: ${{ github.event.workflow_run.event == 'pull_request' }}
+    steps:
+      - name: Download Touchstone comment artifact
+        id: download_comment
+        uses: actions/download-artifact@v8
+        with:
+          name: pr
+          path: ./pr
+          github-token: ${{ github.token }}
+          repository: ${{ github.repository }}
+          run-id: ${{ github.event.workflow_run.id }}
+
+      # defensive since issues could cause commenting in random places
+      - name: Read PR number
+        id: pr
+        shell: bash
+        run: |
+          number="$(tr -cd '0-9' < ./pr/NR)"
+          test -n "$number"
+          echo "number=$number" >> "$GITHUB_OUTPUT"
+
+      - name: Create or update sticky PR comment
+        id: comment
+        uses: marocchino/sticky-pull-request-comment@v3
+        with:
+          GITHUB_TOKEN: ${{ github.token }}
+          number_force: ${{ steps.pr.outputs.number }}
+          header: touchstone
+          path: ./pr/info.txt
+          skip_unchanged: true

.github/workflows/touchstone-receive.yaml

@@ -0,0 +1,43 @@
+name: Continuous Benchmarks (Receive)
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
+  cancel-in-progress: true
+
+on:
+  pull_request:
+
+jobs:
+  prepare:
+    runs-on: ubuntu-latest
+    outputs:
+      config: ${{ steps.read_touchstone_config.outputs.config }}
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v7
+        with:
+          fetch-depth: 0
+
+      - id: read_touchstone_config
+        shell: bash
+        run: |
+          echo "config=$(jq -c . ./touchstone/config.json)" >> "$GITHUB_OUTPUT"
+
+  build:
+    needs: prepare
+    runs-on: ${{ matrix.config.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        config:
+          - ${{ fromJson(needs.prepare.outputs.config) }}
+    env:
+      RSPM: ${{ matrix.config.rspm }}
+    steps:
+      - uses: lorenzwalthert/touchstone/actions/receive@main
+        with:
+          r-version: ${{ matrix.config.r }}
+          touchstone_ref: "@main"

CRAN-SUBMISSION

@@ -1,3 +1,3 @@
-Version: 2.9.0
-Date: 2025-12-22 18:21:47 UTC
-SHA: fd95b46e4868019ff05034384f28f12960f69f33
+Version: 2.10.0
+Date: 2026-06-24 16:20:40 UTC
+SHA: 1d6f5859ddf8792ce01d4a8f259c88d247b4ebb9