fix(ci): repair docker build and consolidate CI/release workflows

The pnpm-fetch layer added in #6296 broke the release build: pnpm 11.10.0
applies patchedDependencies during `pnpm fetch`, before node_modules exists,
crashing with ENOENT. Install directly from the full context with the store
cache mounted instead.

Also audit and consolidate the workflows:
- standardize action majors (cache@v6, upload-artifact@v7, github-script@v9)
- provision Node from mise.toml via jdx/mise-action; drop .nvmrc
- rename deployment-docker-image.yml -> deployment-release.yml, reuse the
  shared setup action, and scope GITHUB_TOKEN permissions per job
- extract the duplicated beta/weekly release logic into a reusable
  deployment-release-pr.yml called by thin triggers

.github/workflows/deployment-beta-release.yml

@@ -14,91 +14,18 @@ permissions:
   pull-requests: write
 
 jobs:
-  create-and-merge-pr:
-    runs-on: ubuntu-latest
-    timeout-minutes: 2
-    steps:
-      - name: Discord notification
-        if: ${{ github.event.inputs.send-notifications }}
-        env:
-          DISCORD_WEBHOOK: ${{ secrets.DISCORD_WEBHOOK }}
-        uses: Ilshidur/action-discord@0.4.0
-        with:
-          args: "Beta release has been triggered: [run ${{ github.run_number }}](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }})"
-      - name: Checkout repository
-        uses: actions/checkout@v7
-        with:
-          fetch-depth: 0
-      - name: Get Next Version
-        id: semver
-        uses: ietf-tools/semver-action@v1
-        with:
-          token: ${{ github.token }}
-          branch: next
-      - name: Create pull request
-        id: create-pull-request
-        run: 'gh pr create --title "chore(release): release ${{ steps.semver.outputs.next }}-beta" --body "Detected change to be ``${{ steps.semver.outputs.bump }}``<br/>Bump version from ``${{ steps.semver.outputs.current }}`` to ``${{ steps.semver.outputs.next }}-beta``" --base beta --head next --label automerge'
-        env:
-          GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
-      - name: Discord notification
-        if: ${{ github.event.inputs.send-notifications }}
-        env:
-          DISCORD_WEBHOOK: ${{ secrets.DISCORD_WEBHOOK }}
-        uses: Ilshidur/action-discord@0.4.0
-        with:
-          args: "Created a release PR ${{ steps.create-pull-request.outputs.url }} for version ${{ steps.semver.outputs.next }}-beta (new behaviour: ${{ steps.semver.outputs.bump }})"
-      - name: Obtain token
-        id: obtainApprovalToken
-        uses: actions/create-github-app-token@v3
-        with:
-          private-key: ${{ secrets.RENOVATE_APPROVE_PRIVATE_KEY }}
-          client-id: ${{ secrets.RENOVATE_APPROVE_APP_ID }}
-          permission-pull-requests: write
-      - name: Approve PR
-        env:
-          GITHUB_TOKEN: ${{ steps.obtainApprovalToken.outputs.token }}
-        run: |
-          gh pr review --approve --body "Automatically approved by GitHub Action"
-      - name: Obtain token
-        id: obtainMergeToken
-        uses: actions/create-github-app-token@v3
-        with:
-          private-key: ${{ secrets.RENOVATE_MERGE_PRIVATE_KEY }}
-          client-id: ${{ secrets.RENOVATE_MERGE_APP_ID }}
-          permission-contents: write # write to beta branch (due to merge)
-          permission-pull-requests: write # merge pull request
-      - id: automerge
-        if: ${{ steps.semver.outputs.bump != 'major' }}
-        name: automerge
-        uses: "pascalgn/automerge-action@v0.16.4"
-        env:
-          GITHUB_TOKEN: ${{ steps.obtainMergeToken.outputs.token }}
-          MERGE_METHOD: merge # we prefer merge commits for merging to beta
-          MERGE_COMMIT_MESSAGE: "chore(release): release ${{ steps.semver.outputs.next }}-beta"
-          MERGE_DELETE_BRANCH: false # never set to true!
-          PULL_REQUEST: "${{ steps.create-pull-request.outputs.pr_number }}"
-          MERGE_RETRIES: 20 # 20 retries * MERGE_RETRY_SLEEP until step fails
-          MERGE_RETRY_SLEEP: 10000 # 10 seconds * MERGE_RETRIES until step fails
-          MERGE_REQUIRED_APPROVALS: 0 # do not require approvals
-
-      - name: Merged Discord notification
-        if: ${{ steps.automerge.outputs.mergeResult == 'merged' && github.event.inputs.send-notifications }}
-        env:
-          DISCORD_WEBHOOK: ${{ secrets.DISCORD_WEBHOOK }}
-        uses: Ilshidur/action-discord@0.4.0
-        with:
-          args: "Merged PR ${{ steps.create-pull-request.outputs.url }} for release ${{ steps.semver.outputs.next }}-beta"
-      - name: Major Bump Discord notification
-        if: ${{ steps.semver.outputs.bump == 'major' && github.event.inputs.send-notifications }}
-        env:
-          DISCORD_WEBHOOK: ${{ secrets.DISCORD_WEBHOOK }}
-        uses: Ilshidur/action-discord@0.4.0
-        with:
-          args: "The release PR must be manually merged because the next version is a major version: ${{ steps.create-pull-request.outputs.url }} for release ${{ steps.semver.outputs.next }}-beta"
-      - name: Discord Fail Notification
-        if: failure() && github.event.inputs.send-notifications
-        env:
-          DISCORD_WEBHOOK: ${{ secrets.DISCORD_WEBHOOK }}
-        uses: Ilshidur/action-discord@0.4.0
-        with:
-          args: "The beta release workflow [run ${{ github.run_number }}](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}) has failed"
+  release:
+    # Permissions must be set on the calling job: a reusable workflow receives
+    # the default GITHUB_TOKEN permissions unless the caller job grants them here.
+    permissions:
+      contents: write
+      pull-requests: write
+    uses: ./.github/workflows/deployment-release-pr.yml
+    secrets: inherit
+    with:
+      release-label: "Beta release"
+      version-suffix: "-beta"
+      semver-branch: next
+      head: next
+      base: beta
+      send-notifications: ${{ github.event.inputs.send-notifications == 'true' }}