diff --git a/.github/actions/setup-mise/action.yml b/.github/actions/setup-mise/action.yml
new file mode 100644
index 000000000..4eeae03a6
--- /dev/null
+++ b/.github/actions/setup-mise/action.yml
@@ -0,0 +1,25 @@
+name: Set up mise Ruby toolchain
+description: >-
+  Install all the CI matrix Rubies via mise with the per-version bundler pins from
+  .mise.ci.toml (MISE_ENV=ci) — the same toolchain bin/test and bin/relock use.
+  Config + cache key are shared across every caller (the *_test workflows and
+  update_lockfiles), so they all restore the one weekly-populated cache.
+
+runs:
+  using: composite
+  steps:
+    - uses: jdx/mise-action@e6a8b3978addb5a52f2b4cd9d91eafa7f0ab959d # v4.2.0
+      env:
+        MISE_ENV: ci
+        MISE_JOBS: "2"
+      with:
+        install: true
+        cache: true
+
+    # Precompiled rubies bake a nonexistent build path into RbConfig["PKG_CONFIG"]
+    # (jdx/ruby#48), breaking native gems like sqlite3. Reset it to PATH's pkg-config.
+    - name: Fix baked PKG_CONFIG path in precompiled rubies
+      shell: bash
+      run: |
+        find ~/.local/share/mise/installs/ruby -name rbconfig.rb \
+          -exec sed -i 's#\(CONFIG\["PKG_CONFIG"\] = \).*#\1"pkg-config"#' {} +
diff --git a/.github/workflows/gem_test.yml b/.github/workflows/gem_test.yml
new file mode 100644
index 000000000..9a883767c
--- /dev/null
+++ b/.github/workflows/gem_test.yml
@@ -0,0 +1,73 @@
+name: Gem Test
+
+# Reusable, gem-agnostic test workflow. tests.yml invokes it once per gem via a
+# central matrix, passing the gem dir plus whatever optional service/packages
+# that gem needs. The per-cell matrix still comes from each gem's
+# test-matrix.json (the single source of truth), expanded here and run via
+# bin/test — so adding/removing a cell never touches this file.
+
+on:
+  workflow_call:
+    inputs:
+      gem:
+        description: Gem directory to test (e.g. sentry-ruby).
+        required: true
+        type: string
+      apt:
+        description: Space-separated apt packages to install before testing.
+        type: string
+        default: ""
+
+jobs:
+  matrix:
+    runs-on: ubuntu-latest
+    outputs:
+      include: ${{ steps.set.outputs.include }}
+    steps:
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - id: set
+        run: echo "include=$(jq -c . ${{ inputs.gem }}/test-matrix.json)" >> "$GITHUB_OUTPUT"
+
+  test:
+    needs: matrix
+    defaults:
+      run:
+        working-directory: ${{ inputs.gem }}
+    name: ${{ toJson(matrix) }}
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    services:
+      redis:
+        image: ghcr.io/getsentry/image-mirror-library-redis:7.0.8-bullseye
+        ports:
+          - 6379:6379
+        options: >-
+          --health-cmd "redis-cli ping"
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+    strategy:
+      fail-fast: false
+      matrix:
+        include: ${{ fromJson(needs.matrix.outputs.include) }}
+    steps:
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+
+      - name: Install apt packages
+        if: inputs.apt != ''
+        run: |
+          sudo apt-get update
+          sudo apt-get install --no-install-recommends ${{ inputs.apt }}
+
+      - name: Set up Ruby
+        uses: ./.github/actions/setup-mise
+
+      - name: Run specs
+        env:
+          MATRIX_ENTRY: ${{ toJson(matrix) }}
+        run: ruby ../bin/test --entry "$MATRIX_ENTRY" --rake
+
+      - name: Upload Coverage
+        uses: codecov/codecov-action@1af58845a975a7985b0beb0cbe6fbbb71a41dbad # v5
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.github/workflows/sentry_delayed_job_test.yml b/.github/workflows/sentry_delayed_job_test.yml
deleted file mode 100644
index 6fb7f7f09..000000000
--- a/.github/workflows/sentry_delayed_job_test.yml
+++ /dev/null
@@ -1,73 +0,0 @@
-name: sentry-delayed_job Test
-
-on:
-  workflow_dispatch:
-  workflow_call:
-    outputs:
-      matrix-result:
-        description: "Matrix job result"
-        value: ${{ jobs.test.outputs.matrix-result }}
-# Cancel in progress workflows on pull_requests.
-# https://docs.github.com/en/actions/using-jobs/using-concurrency#example-using-a-fallback-value
-concurrency:
-  group: sentry-delayed-job-test-${{ github.head_ref || github.run_id }}
-  cancel-in-progress: true
-jobs:
-  matrix:
-    runs-on: ubuntu-latest
-    outputs:
-      include: ${{ steps.set.outputs.include }}
-    steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
-      # test-matrix.json is the single source of truth for this gem's matrix.
-      - id: set
-        run: echo "include=$(jq -c . sentry-delayed_job/test-matrix.json)" >> "$GITHUB_OUTPUT"
-
-  test:
-    needs: matrix
-    defaults:
-      run:
-        working-directory: sentry-delayed_job
-    name: Ruby ${{ matrix.ruby_version }}, options - ${{ toJson(matrix.options) }}
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    env:
-      RUBYOPT: ${{ matrix.options.rubyopt }}
-      # Pin via the wrapper gemfile + its sibling .gemfile.lock (BUNDLE_LOCKFILE is unsupported on older bundlers).
-      BUNDLE_GEMFILE: ${{ github.workspace }}/sentry-delayed_job/gemfiles/ruby-${{ matrix.ruby_version }}.gemfile
-      BUNDLE_FROZEN: "true"
-      BUNDLE_WITHOUT: rubocop
-      JRUBY_OPTS: "--debug" # for more accurate test coverage
-    strategy:
-      fail-fast: false
-      matrix:
-        include: ${{ fromJson(needs.matrix.outputs.include) }}
-    steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
-      - name: Install sqlite
-        run: |
-          # See https://github.community/t5/GitHub-Actions/ubuntu-latest-Apt-repository-list-issues/td-p/41122/page/2
-          for apt_file in `grep -lr microsoft /etc/apt/sources.list.d/`; do sudo rm $apt_file; done
-          sudo apt-get update
-          sudo apt-get install libsqlite3-dev
-
-      # Wrapper keys the lock to this cell (<cell>.gemfile -> <cell>.gemfile.lock); must exist before setup-ruby.
-      - name: Write wrapper gemfile
-        run: |
-          mkdir -p gemfiles
-          echo 'eval_gemfile "../Gemfile"' > "$BUNDLE_GEMFILE"
-
-      - name: Set up Ruby ${{ matrix.ruby_version }}
-        uses: ruby/setup-ruby@319994f95fa847cf3fb3cd3dbe89f6dcde9f178f # v1
-        with:
-          ruby-version: ${{ matrix.ruby_version }}
-          bundler: latest
-          bundler-cache: true
-
-      - name: Run specs
-        run: bundle exec rake
-
-      - name: Upload Coverage
-        uses: codecov/codecov-action@1af58845a975a7985b0beb0cbe6fbbb71a41dbad # v5
-        with:
-          token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.github/workflows/sentry_opentelemetry_test.yml b/.github/workflows/sentry_opentelemetry_test.yml
deleted file mode 100644
index 4c95762b7..000000000
--- a/.github/workflows/sentry_opentelemetry_test.yml
+++ /dev/null
@@ -1,68 +0,0 @@
-name: sentry-opentelemetry Test
-
-on:
-  workflow_dispatch:
-  workflow_call:
-    outputs:
-      matrix-result:
-        description: "Matrix job result"
-        value: ${{ jobs.test.outputs.matrix-result }}
-# Cancel in progress workflows on pull_requests.
-# https://docs.github.com/en/actions/using-jobs/using-concurrency#example-using-a-fallback-value
-concurrency:
-  group: sentry-opentelemetry-test-${{ github.head_ref || github.run_id }}
-  cancel-in-progress: true
-jobs:
-  matrix:
-    runs-on: ubuntu-latest
-    outputs:
-      include: ${{ steps.set.outputs.include }}
-    steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
-      # test-matrix.json is the single source of truth for this gem's matrix.
-      - id: set
-        run: echo "include=$(jq -c . sentry-opentelemetry/test-matrix.json)" >> "$GITHUB_OUTPUT"
-
-  test:
-    needs: matrix
-    defaults:
-      run:
-        working-directory: sentry-opentelemetry
-    name: Ruby ${{ matrix.ruby_version }} & OpenTelemetry ${{ matrix.opentelemetry_version }}, options - ${{ toJson(matrix.options) }}
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    env:
-      RUBYOPT: ${{ matrix.options.rubyopt }}
-      # Pin via the wrapper gemfile + its sibling .gemfile.lock (BUNDLE_LOCKFILE is unsupported on older bundlers).
-      BUNDLE_GEMFILE: ${{ github.workspace }}/sentry-opentelemetry/gemfiles/ruby-${{ matrix.ruby_version }}.gemfile
-      BUNDLE_FROZEN: "true"
-      BUNDLE_WITHOUT: rubocop
-      OPENTELEMETRY_VERSION: ${{ matrix.opentelemetry_version }}
-      JRUBY_OPTS: "--debug" # for more accurate test coverage
-    strategy:
-      fail-fast: false
-      matrix:
-        include: ${{ fromJson(needs.matrix.outputs.include) }}
-    steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
-
-      # Wrapper keys the lock to this cell (<cell>.gemfile -> <cell>.gemfile.lock); must exist before setup-ruby.
-      - name: Write wrapper gemfile
-        run: |
-          mkdir -p gemfiles
-          echo 'eval_gemfile "../Gemfile"' > "$BUNDLE_GEMFILE"
-
-      - name: Set up Ruby ${{ matrix.ruby_version }}
-        uses: ruby/setup-ruby@319994f95fa847cf3fb3cd3dbe89f6dcde9f178f # v1
-        with:
-          ruby-version: ${{ matrix.ruby_version }}
-          bundler: latest
-          bundler-cache: true
-
-      - name: Run specs
-        run: bundle exec rake
-
-      - name: Upload Coverage
-        uses: codecov/codecov-action@1af58845a975a7985b0beb0cbe6fbbb71a41dbad # v5
-        with:
-          token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.github/workflows/sentry_rails_test.yml b/.github/workflows/sentry_rails_test.yml
deleted file mode 100644
index caa869a08..000000000
--- a/.github/workflows/sentry_rails_test.yml
+++ /dev/null
@@ -1,69 +0,0 @@
-name: sentry-rails Test
-
-on:
-  workflow_dispatch:
-  workflow_call:
-# Cancel in progress workflows on pull_requests.
-# https://docs.github.com/en/actions/using-jobs/using-concurrency#example-using-a-fallback-value
-concurrency:
-  group: sentry-rails-test-${{ github.head_ref || github.run_id }}
-  cancel-in-progress: true
-jobs:
-  matrix:
-    runs-on: ubuntu-latest
-    outputs:
-      include: ${{ steps.set.outputs.include }}
-    steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
-      # test-matrix.json is the single source of truth for this gem's matrix.
-      - id: set
-        run: echo "include=$(jq -c . sentry-rails/test-matrix.json)" >> "$GITHUB_OUTPUT"
-
-  test:
-    needs: matrix
-    defaults:
-      run:
-        working-directory: sentry-rails
-    name: Ruby ${{ matrix.ruby_version }} & Rails ${{ matrix.rails_version }}, options - ${{ toJson(matrix.options) }}
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    env:
-      RUBYOPT: ${{ matrix.options.rubyopt }}
-      # Pin via the wrapper gemfile + its sibling .gemfile.lock (BUNDLE_LOCKFILE is unsupported on older bundlers).
-      BUNDLE_GEMFILE: ${{ github.workspace }}/sentry-rails/gemfiles/ruby-${{ matrix.ruby_version }}_rails-${{ matrix.rails_version }}.gemfile
-      BUNDLE_FROZEN: "true"
-      BUNDLE_WITHOUT: rubocop
-      RAILS_VERSION: ${{ matrix.rails_version }}
-      JRUBY_OPTS: "--debug" # for more accurate test coverage
-    strategy:
-      fail-fast: false
-      matrix:
-        include: ${{ fromJson(needs.matrix.outputs.include) }}
-
-    steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
-      - name: Install sqlite and ImageMagick
-        run: |
-          # See https://github.community/t5/GitHub-Actions/ubuntu-latest-Apt-repository-list-issues/td-p/41122/page/2
-          for apt_file in `grep -lr microsoft /etc/apt/sources.list.d/`; do sudo rm $apt_file; done
-          sudo apt-get update
-          sudo apt-get install --no-install-recommends libsqlite3-dev imagemagick
-      # Wrapper keys the lock to this cell (<cell>.gemfile -> <cell>.gemfile.lock); must exist before setup-ruby.
-      - name: Write wrapper gemfile
-        run: |
-          mkdir -p gemfiles
-          echo 'eval_gemfile "../Gemfile"' > "$BUNDLE_GEMFILE"
-      - name: Set up Ruby ${{ matrix.ruby_version }}
-        uses: ruby/setup-ruby@319994f95fa847cf3fb3cd3dbe89f6dcde9f178f # v1
-        with:
-          ruby-version: ${{ matrix.ruby_version }}
-          bundler: latest
-          bundler-cache: true
-
-      - name: Build with Rails ${{ matrix.rails_version }}
-        run: bundle exec rake
-
-      - name: Upload Coverage
-        uses: codecov/codecov-action@1af58845a975a7985b0beb0cbe6fbbb71a41dbad # v5
-        with:
-          token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.github/workflows/sentry_resque_test.yml b/.github/workflows/sentry_resque_test.yml
deleted file mode 100644
index de40c61ff..000000000
--- a/.github/workflows/sentry_resque_test.yml
+++ /dev/null
@@ -1,82 +0,0 @@
-name: sentry-resque Test
-
-on:
-  workflow_dispatch:
-  workflow_call:
-    outputs:
-      matrix-result:
-        description: "Matrix job result"
-        value: ${{ jobs.test.outputs.matrix-result }}
-# Cancel in progress workflows on pull_requests.
-# https://docs.github.com/en/actions/using-jobs/using-concurrency#example-using-a-fallback-value
-concurrency:
-  group: sentry-resque-test-${{ github.head_ref || github.run_id }}
-  cancel-in-progress: true
-jobs:
-  matrix:
-    runs-on: ubuntu-latest
-    outputs:
-      include: ${{ steps.set.outputs.include }}
-    steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
-      # test-matrix.json is the single source of truth for this gem's matrix.
-      - id: set
-        run: echo "include=$(jq -c . sentry-resque/test-matrix.json)" >> "$GITHUB_OUTPUT"
-
-  test:
-    needs: matrix
-    defaults:
-      run:
-        working-directory: sentry-resque
-    name: Ruby ${{ matrix.ruby_version }}, options - ${{ toJson(matrix.options) }}
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    services:
-      redis:
-        image: ghcr.io/getsentry/image-mirror-library-redis:7.0.8-bullseye
-        ports:
-          - 6379:6379
-        options: >-
-          --health-cmd "redis-cli ping"
-          --health-interval 10s
-          --health-timeout 5s
-          --health-retries 5
-    env:
-      RUBYOPT: ${{ matrix.options.rubyopt }}
-      # Pin via the wrapper gemfile + its sibling .gemfile.lock (BUNDLE_LOCKFILE is unsupported on older bundlers).
-      BUNDLE_GEMFILE: ${{ github.workspace }}/sentry-resque/gemfiles/ruby-${{ matrix.ruby_version }}.gemfile
-      BUNDLE_FROZEN: "true"
-      BUNDLE_WITHOUT: rubocop
-      JRUBY_OPTS: "--debug" # for more accurate test coverage
-    strategy:
-      fail-fast: false
-      matrix:
-        include: ${{ fromJson(needs.matrix.outputs.include) }}
-    steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
-      # Wrapper keys the lock to this cell (<cell>.gemfile -> <cell>.gemfile.lock); must exist before setup-ruby.
-      - name: Write wrapper gemfile
-        run: |
-          mkdir -p gemfiles
-          echo 'eval_gemfile "../Gemfile"' > "$BUNDLE_GEMFILE"
-      - name: Set up Ruby ${{ matrix.ruby_version }}
-        uses: ruby/setup-ruby@319994f95fa847cf3fb3cd3dbe89f6dcde9f178f # v1
-        with:
-          ruby-version: ${{ matrix.ruby_version }}
-          bundler: latest
-          bundler-cache: true
-
-      - name: Run specs without Rails
-        env:
-          RUBYOPT: ${{ matrix.options.rubyopt }}
-        run: BUNDLE_WITHOUT="rubocop rails" bundle exec rake
-
-      - name: Run specs with Rails
-        env:
-          RUBYOPT: ${{ matrix.options.rubyopt }}
-        run: bundle exec rake
-
-      - name: Upload Coverage
-        uses: codecov/codecov-action@1af58845a975a7985b0beb0cbe6fbbb71a41dbad # v5
-        with:
-          token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.github/workflows/sentry_ruby_test.yml b/.github/workflows/sentry_ruby_test.yml
deleted file mode 100644
index b150da809..000000000
--- a/.github/workflows/sentry_ruby_test.yml
+++ /dev/null
@@ -1,75 +0,0 @@
-name: sentry-ruby Test
-
-on:
-  workflow_dispatch:
-  workflow_call:
-# Cancel in progress workflows on pull_requests.
-# https://docs.github.com/en/actions/using-jobs/using-concurrency#example-using-a-fallback-value
-concurrency:
-  group: sentry-ruby-test-${{ github.head_ref || github.run_id }}
-  cancel-in-progress: true
-jobs:
-  matrix:
-    runs-on: ubuntu-latest
-    outputs:
-      include: ${{ steps.set.outputs.include }}
-    steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
-      # test-matrix.json is the single source of truth for this gem's matrix.
-      - id: set
-        run: echo "include=$(jq -c . sentry-ruby/test-matrix.json)" >> "$GITHUB_OUTPUT"
-
-  test:
-    needs: matrix
-    defaults:
-      run:
-        working-directory: sentry-ruby
-    name: Ruby ${{ matrix.ruby_version }} & Rack ${{ matrix.rack_version }}, options - ${{ toJson(matrix.options) }}
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    services:
-      redis:
-        image: ghcr.io/getsentry/image-mirror-library-redis:7.0.8-bullseye
-        ports:
-          - 6379:6379
-        options: >-
-          --health-cmd "redis-cli ping"
-          --health-interval 10s
-          --health-timeout 5s
-          --health-retries 5
-    env:
-      RUBYOPT: ${{ matrix.options.rubyopt }}
-      # Pin via the wrapper gemfile + its sibling .gemfile.lock (BUNDLE_LOCKFILE is unsupported on older bundlers).
-      BUNDLE_GEMFILE: ${{ github.workspace }}/sentry-ruby/gemfiles/ruby-${{ matrix.ruby_version }}_rack-${{ matrix.rack_version }}_redis-${{ matrix.redis_rb_version }}.gemfile
-      BUNDLE_FROZEN: "true"
-      BUNDLE_WITHOUT: rubocop
-      RACK_VERSION: ${{ matrix.rack_version }}
-      REDIS_RB_VERSION: ${{ matrix.redis_rb_version }}
-      JRUBY_OPTS: "--debug" # for more accurate test coverage
-    strategy:
-      fail-fast: false
-      matrix:
-        include: ${{ fromJson(needs.matrix.outputs.include) }}
-    steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
-
-      # Wrapper keys the lock to this cell (<cell>.gemfile -> <cell>.gemfile.lock); must exist before setup-ruby.
-      - name: Write wrapper gemfile
-        run: |
-          mkdir -p gemfiles
-          echo 'eval_gemfile "../Gemfile"' > "$BUNDLE_GEMFILE"
-
-      - name: Set up Ruby ${{ matrix.ruby_version }}
-        uses: ruby/setup-ruby@319994f95fa847cf3fb3cd3dbe89f6dcde9f178f # v1
-        with:
-          ruby-version: ${{ matrix.ruby_version }}
-          bundler: latest
-          bundler-cache: true
-
-      - name: Run specs with Rack ${{ matrix.rack_version }} and redis-rb ${{ matrix.redis_rb_version }}
-        run: bundle exec rake
-
-      - name: Upload Coverage
-        uses: codecov/codecov-action@1af58845a975a7985b0beb0cbe6fbbb71a41dbad # v5
-        with:
-          token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.github/workflows/sentry_sidekiq_test.yml b/.github/workflows/sentry_sidekiq_test.yml
deleted file mode 100644
index 2bc17add6..000000000
--- a/.github/workflows/sentry_sidekiq_test.yml
+++ /dev/null
@@ -1,78 +0,0 @@
-name: sentry-sidekiq Test
-
-on:
-  workflow_dispatch:
-  workflow_call:
-    outputs:
-      matrix-result:
-        description: "Matrix job result"
-        value: ${{ jobs.test.outputs.matrix-result }}
-# Cancel in progress workflows on pull_requests.
-# https://docs.github.com/en/actions/using-jobs/using-concurrency#example-using-a-fallback-value
-concurrency:
-  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
-  cancel-in-progress: true
-jobs:
-  matrix:
-    runs-on: ubuntu-latest
-    outputs:
-      include: ${{ steps.set.outputs.include }}
-    steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
-      # test-matrix.json is the single source of truth for this gem's matrix.
-      - id: set
-        run: echo "include=$(jq -c . sentry-sidekiq/test-matrix.json)" >> "$GITHUB_OUTPUT"
-
-  test:
-    needs: matrix
-    defaults:
-      run:
-        working-directory: sentry-sidekiq
-    name: Ruby ${{ matrix.ruby_version }} & Sidekiq ${{ matrix.sidekiq_version }}, options - ${{ toJson(matrix.options) }}
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    services:
-      redis:
-        image: ghcr.io/getsentry/image-mirror-library-redis:7.0.8-bullseye
-        ports:
-          - 6379:6379
-        options: >-
-          --health-cmd "redis-cli ping"
-          --health-interval 10s
-          --health-timeout 5s
-          --health-retries 5
-    env:
-      RUBYOPT: ${{ matrix.options.rubyopt }}
-      # Pin via the wrapper gemfile + its sibling .gemfile.lock (BUNDLE_LOCKFILE is unsupported on older bundlers).
-      BUNDLE_GEMFILE: ${{ github.workspace }}/sentry-sidekiq/gemfiles/ruby-${{ matrix.ruby_version }}_sidekiq-${{ matrix.sidekiq_version }}.gemfile
-      BUNDLE_FROZEN: "true"
-      BUNDLE_WITHOUT: rubocop
-      SIDEKIQ_VERSION: ${{ matrix.sidekiq_version }}
-      JRUBY_OPTS: "--debug" # for more accurate test coverage
-    strategy:
-      fail-fast: false
-      matrix:
-        include: ${{ fromJson(needs.matrix.outputs.include) }}
-    steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
-
-      # Wrapper keys the lock to this cell (<cell>.gemfile -> <cell>.gemfile.lock); must exist before setup-ruby.
-      - name: Write wrapper gemfile
-        run: |
-          mkdir -p gemfiles
-          echo 'eval_gemfile "../Gemfile"' > "$BUNDLE_GEMFILE"
-
-      - name: Set up Ruby ${{ matrix.ruby_version }}
-        uses: ruby/setup-ruby@319994f95fa847cf3fb3cd3dbe89f6dcde9f178f # v1
-        with:
-          ruby-version: ${{ matrix.ruby_version }}
-          bundler: latest
-          bundler-cache: true
-
-      - name: Run specs with Sidekiq ${{ matrix.sidekiq_version }}
-        run: bundle exec rake
-
-      - name: Upload Coverage
-        uses: codecov/codecov-action@1af58845a975a7985b0beb0cbe6fbbb71a41dbad # v5
-        with:
-          token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.github/workflows/sentry_yabeda_test.yml b/.github/workflows/sentry_yabeda_test.yml
deleted file mode 100644
index e14d1d217..000000000
--- a/.github/workflows/sentry_yabeda_test.yml
+++ /dev/null
@@ -1,67 +0,0 @@
-name: sentry-yabeda Test
-
-on:
-  workflow_dispatch:
-  workflow_call:
-    outputs:
-      matrix-result:
-        description: "Matrix job result"
-        value: ${{ jobs.test.outputs.matrix-result }}
-# Cancel in progress workflows on pull_requests.
-# https://docs.github.com/en/actions/using-jobs/using-concurrency#example-using-a-fallback-value
-concurrency:
-  group: sentry-yabeda-test-${{ github.head_ref || github.run_id }}
-  cancel-in-progress: true
-jobs:
-  matrix:
-    runs-on: ubuntu-latest
-    outputs:
-      include: ${{ steps.set.outputs.include }}
-    steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
-      # test-matrix.json is the single source of truth for this gem's matrix.
-      - id: set
-        run: echo "include=$(jq -c . sentry-yabeda/test-matrix.json)" >> "$GITHUB_OUTPUT"
-
-  test:
-    needs: matrix
-    defaults:
-      run:
-        working-directory: sentry-yabeda
-    name: Ruby ${{ matrix.ruby_version }}, options - ${{ toJson(matrix.options) }}
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    env:
-      RUBYOPT: ${{ matrix.options.rubyopt }}
-      # Pin via the wrapper gemfile + its sibling .gemfile.lock (BUNDLE_LOCKFILE is unsupported on older bundlers).
-      BUNDLE_GEMFILE: ${{ github.workspace }}/sentry-yabeda/gemfiles/ruby-${{ matrix.ruby_version }}.gemfile
-      BUNDLE_FROZEN: "true"
-      BUNDLE_WITHOUT: rubocop
-      JRUBY_OPTS: "--debug" # for more accurate test coverage
-    strategy:
-      fail-fast: false
-      matrix:
-        include: ${{ fromJson(needs.matrix.outputs.include) }}
-    steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
-
-      # Wrapper keys the lock to this cell (<cell>.gemfile -> <cell>.gemfile.lock); must exist before setup-ruby.
-      - name: Write wrapper gemfile
-        run: |
-          mkdir -p gemfiles
-          echo 'eval_gemfile "../Gemfile"' > "$BUNDLE_GEMFILE"
-
-      - name: Set up Ruby ${{ matrix.ruby_version }}
-        uses: ruby/setup-ruby@319994f95fa847cf3fb3cd3dbe89f6dcde9f178f # v1
-        with:
-          ruby-version: ${{ matrix.ruby_version }}
-          bundler: latest
-          bundler-cache: true
-
-      - name: Run specs
-        run: bundle exec rake
-
-      - name: Upload Coverage
-        uses: codecov/codecov-action@1af58845a975a7985b0beb0cbe6fbbb71a41dbad # v5
-        with:
-          token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 95b31f45b..da2841de0 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -13,45 +13,39 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  delayed_job-tests:
-    uses: ./.github/workflows/sentry_delayed_job_test.yml
-    secrets: inherit
-
-  opentelemetry-tests:
-    uses: ./.github/workflows/sentry_opentelemetry_test.yml
-    secrets: inherit
-
-  rails-tests:
-    uses: ./.github/workflows/sentry_rails_test.yml
-    secrets: inherit
-
-  resque-tests:
-    uses: ./.github/workflows/sentry_resque_test.yml
-    secrets: inherit
-
-  ruby-tests:
-    uses: ./.github/workflows/sentry_ruby_test.yml
-    secrets: inherit
-
-  sidekiq-tests:
-    uses: ./.github/workflows/sentry_sidekiq_test.yml
-    secrets: inherit
-
-  yabeda-tests:
-    uses: ./.github/workflows/sentry_yabeda_test.yml
+  # Prewarm mise cache in case it was evicted recently.
+  # Each specific test needs this to exist.
+  setup-mise:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: ./.github/actions/setup-mise
+
+  test:
+    needs: setup-mise
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - gem: sentry-ruby
+          - gem: sentry-rails
+            apt: libsqlite3-dev imagemagick
+          - gem: sentry-sidekiq
+          - gem: sentry-delayed_job
+            apt: libsqlite3-dev
+          - gem: sentry-resque
+          - gem: sentry-opentelemetry
+          - gem: sentry-yabeda
+    uses: ./.github/workflows/gem_test.yml
+    with:
+      gem: ${{ matrix.gem }}
+      apt: ${{ matrix.apt || '' }}
     secrets: inherit
 
   codecov:
     name: CodeCov
     runs-on: ubuntu-latest
-    needs:
-      - ruby-tests
-      - rails-tests
-      - sidekiq-tests
-      - delayed_job-tests
-      - resque-tests
-      - opentelemetry-tests
-      - yabeda-tests
+    needs: test
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
 
diff --git a/.github/workflows/update_lockfiles.yml b/.github/workflows/update_lockfiles.yml
index 443d9fd32..200211e1c 100644
--- a/.github/workflows/update_lockfiles.yml
+++ b/.github/workflows/update_lockfiles.yml
@@ -32,18 +32,10 @@ jobs:
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
 
-      # mise installs every Ruby declared in .mise.ci.toml (ruby.compile=false ->
-      # prebuilt binaries where available); bin/relock then resolves each cell
-      # against its matching Ruby. MISE_ENV scopes the install to the ci profile;
-      # it also keys the action's tool cache, so the matrix Rubies are cached and
-      # restored across runs.
-      - uses: jdx/mise-action@e6a8b3978addb5a52f2b4cd9d91eafa7f0ab959d # v4.2.0
-        env:
-          MISE_ENV: ci
-          MISE_JOBS: "2"
-        with:
-          install: true
-          cache: true
+      # Install every Ruby in .mise.ci.toml and restore the shared cache; bin/relock
+      # then resolves each cell against its matching Ruby. Same setup the *_test
+      # workflows use, so they all share one mise tool cache.
+      - uses: ./.github/actions/setup-mise
 
       - name: Regenerate lockfiles
         run: ruby bin/relock
diff --git a/bin/lib/matrix.rb b/bin/lib/matrix.rb
index a362dd18b..c0ef028c3 100644
--- a/bin/lib/matrix.rb
+++ b/bin/lib/matrix.rb
@@ -44,19 +44,22 @@ def label
   #   -> ruby-3.2_rack-2_redis-4, {RACK_VERSION=2, REDIS_RB_VERSION=4}
   def cell_from_entry(gem, entry)
     ruby = entry.fetch("ruby_version")
-    segments = ["ruby-#{ruby}"]
     env = {}
 
-    entry.each do |key, value|
+    axes = entry.filter_map do |key, value|
       next if key == "ruby_version" || key == "options"
 
       name = key.split("_").first
       var = GEM_ENV_MAPPING[name]
       abort "Unknown matrix key: '#{key}' in #{gem}/test-matrix.json" unless var
-      segments << "#{name}-#{value}"
       env[var] = value
+      [name, value]
     end
 
+    # Sort axes by name so the wrapper/lock filename is canonical regardless of
+    # key order in the source entry — CI hands us the matrix object verbatim.
+    segments = ["ruby-#{ruby}"] + axes.sort_by(&:first).map { |name, value| "#{name}-#{value}" }
+
     Cell.new(gem: gem,
              base: segments.join("_"),
              ruby: ruby,
diff --git a/bin/test b/bin/test
index bba0d113a..bf36f8663 100755
--- a/bin/test
+++ b/bin/test
@@ -52,16 +52,31 @@ def cell_for_gem(gem)
   [cell, gem]
 end
 
+# Build the cell straight from a test-matrix.json entry. CI already holds the
+# entry as its matrix context, so the workflow can hand us `toJson(matrix)`
+# verbatim instead of re-deriving a --cell path. Uses the same cell_from_entry as
+# bin/relock, so the wrapper/lock name and rubyopt resolve identically. Gem comes
+# from --gem, else the working directory (CI runs from the gem dir).
+def cell_from_entry_arg(json, gem)
+  gem ||= File.basename(Dir.pwd)
+  abort "No test-matrix.json for gem '#{gem}'; pass --gem or run from a gem dir." unless all_gems.include?(gem)
+  [cell_from_entry(gem, JSON.parse(json)), gem]
+rescue JSON::ParserError => e
+  abort "--entry is not valid JSON: #{e.message}"
+end
+
 opts = {
   cell: nil,
+  entry: nil,
   gem: nil,
   rake: false,
   list: false
 }
 
 parser = OptionParser.new do |o|
-  o.banner = "Usage: bin/test (--cell PATH | --gem NAME) [options] [rspec args]"
+  o.banner = "Usage: bin/test (--cell PATH | --entry JSON | --gem NAME) [options] [rspec args]"
   o.on("--cell PATH", "Cell to run, by its wrapper/lock path (see -l).") { |v| opts[:cell] = v }
+  o.on("--entry JSON", "Cell to run, from a test-matrix.json entry (pairs with --gem/cwd).") { |v| opts[:entry] = v }
   o.on("--gem NAME", "Gem to run (auto-picks newest installed Ruby cell); scopes -l.") { |v| opts[:gem] = v }
   o.on("--rake", "Run `bundle exec rake` (full CI task) instead of rspec.") { opts[:rake] = true }
   o.on("-l", "--list", "List every cell's wrapper path, one per line; do nothing.") { opts[:list] = true }
@@ -91,12 +106,14 @@ if opts[:list]
 end
 
 cell, gem =
-  if opts[:cell]
+  if opts[:entry]
+    cell_from_entry_arg(opts[:entry], opts[:gem])
+  elsif opts[:cell]
     cell_from_path(opts[:cell], opts[:gem])
   elsif opts[:gem]
     cell_for_gem(opts[:gem])
   else
-    abort "Pass --cell PATH or --gem NAME (see `bin/test -l`)."
+    abort "Pass --cell PATH, --entry JSON, or --gem NAME (see `bin/test -l`)."
   end
 
 ensure_installed([cell])
diff --git a/sentry-delayed_job/README.md b/sentry-delayed_job/README.md
index ab616229f..6d2013cb9 100644
--- a/sentry-delayed_job/README.md
+++ b/sentry-delayed_job/README.md
@@ -11,7 +11,7 @@
 
 
 [![Gem Version](https://img.shields.io/gem/v/sentry-delayed_job.svg)](https://rubygems.org/gems/sentry-delayed_job)
-![Build Status](https://github.com/getsentry/sentry-ruby/actions/workflows/sentry_delayed_job_test.yml/badge.svg)
+![Build Status](https://github.com/getsentry/sentry-ruby/actions/workflows/tests.yml/badge.svg)
 [![Coverage Status](https://img.shields.io/codecov/c/github/getsentry/sentry-ruby/master?logo=codecov)](https://codecov.io/gh/getsentry/sentry-ruby/branch/master)
 [![Gem](https://img.shields.io/gem/dt/sentry-delayed_job.svg)](https://rubygems.org/gems/sentry-delayed_job/)
 [![SemVer](https://api.dependabot.com/badges/compatibility_score?dependency-name=sentry-delayed_job&package-manager=bundler&version-scheme=semver)](https://dependabot.com/compatibility-score.html?dependency-name=sentry-delayed_job&package-manager=bundler&version-scheme=semver)
diff --git a/sentry-opentelemetry/README.md b/sentry-opentelemetry/README.md
index 2d3f72016..179f8eae7 100644
--- a/sentry-opentelemetry/README.md
+++ b/sentry-opentelemetry/README.md
@@ -11,7 +11,7 @@
 
 
 [![Gem Version](https://img.shields.io/gem/v/sentry-opentelemetry.svg)](https://rubygems.org/gems/sentry-opentelemetry)
-![Build Status](https://github.com/getsentry/sentry-ruby/actions/workflows/sentry_opentelemetry_test.yml/badge.svg)
+![Build Status](https://github.com/getsentry/sentry-ruby/actions/workflows/tests.yml/badge.svg)
 [![Coverage Status](https://img.shields.io/codecov/c/github/getsentry/sentry-ruby/master?logo=codecov)](https://codecov.io/gh/getsentry/sentry-ruby/branch/master)
 [![Gem](https://img.shields.io/gem/dt/sentry-opentelemetry.svg)](https://rubygems.org/gems/sentry-opentelemetry/)
 [![SemVer](https://api.dependabot.com/badges/compatibility_score?dependency-name=sentry-opentelemetry&package-manager=bundler&version-scheme=semver)](https://dependabot.com/compatibility-score.html?dependency-name=sentry-opentelemetry&package-manager=bundler&version-scheme=semver)
diff --git a/sentry-rails/README.md b/sentry-rails/README.md
index c8d1f2a19..6e97368fd 100644
--- a/sentry-rails/README.md
+++ b/sentry-rails/README.md
@@ -11,7 +11,7 @@
 
 
 [![Gem Version](https://img.shields.io/gem/v/sentry-rails.svg)](https://rubygems.org/gems/sentry-rails)
-![Build Status](https://github.com/getsentry/sentry-ruby/actions/workflows/sentry_rails_test.yml/badge.svg)
+![Build Status](https://github.com/getsentry/sentry-ruby/actions/workflows/tests.yml/badge.svg)
 [![Coverage Status](https://img.shields.io/codecov/c/github/getsentry/sentry-ruby/master?logo=codecov)](https://codecov.io/gh/getsentry/sentry-ruby/branch/master)
 [![Gem](https://img.shields.io/gem/dt/sentry-rails.svg)](https://rubygems.org/gems/sentry-rails/)
 [![SemVer](https://api.dependabot.com/badges/compatibility_score?dependency-name=sentry-rails&package-manager=bundler&version-scheme=semver)](https://dependabot.com/compatibility-score.html?dependency-name=sentry-rails&package-manager=bundler&version-scheme=semver)
diff --git a/sentry-resque/Gemfile b/sentry-resque/Gemfile
index f3b188d0d..b099a260b 100644
--- a/sentry-resque/Gemfile
+++ b/sentry-resque/Gemfile
@@ -12,7 +12,5 @@ gem "sentry-ruby", path: "../sentry-ruby"
 
 gem "resque-retry", "~> 1.8"
 
-group :rails do
-  gem "sentry-rails", path: "../sentry-rails"
-  gem "rails", "> 5.2.0"
-end
+gem "sentry-rails", path: "../sentry-rails"
+gem "rails", "> 5.2.0"
diff --git a/sentry-resque/README.md b/sentry-resque/README.md
index a6aab404c..f325b027d 100644
--- a/sentry-resque/README.md
+++ b/sentry-resque/README.md
@@ -11,7 +11,7 @@
 
 
 [![Gem Version](https://img.shields.io/gem/v/sentry-resque.svg)](https://rubygems.org/gems/sentry-resque)
-![Build Status](https://github.com/getsentry/sentry-ruby/actions/workflows/sentry_resque_test.yml/badge.svg)
+![Build Status](https://github.com/getsentry/sentry-ruby/actions/workflows/tests.yml/badge.svg)
 [![Coverage Status](https://img.shields.io/codecov/c/github/getsentry/sentry-ruby/master?logo=codecov)](https://codecov.io/gh/getsentry/sentry-ruby/branch/master)
 [![Gem](https://img.shields.io/gem/dt/sentry-resque.svg)](https://rubygems.org/gems/sentry-resque/)
 [![SemVer](https://api.dependabot.com/badges/compatibility_score?dependency-name=sentry-resque&package-manager=bundler&version-scheme=semver)](https://dependabot.com/compatibility-score.html?dependency-name=sentry-resque&package-manager=bundler&version-scheme=semver)
diff --git a/sentry-sidekiq/README.md b/sentry-sidekiq/README.md
index 30da6ebe1..939b2e9a8 100644
--- a/sentry-sidekiq/README.md
+++ b/sentry-sidekiq/README.md
@@ -11,7 +11,7 @@
 
 
 [![Gem Version](https://img.shields.io/gem/v/sentry-sidekiq.svg)](https://rubygems.org/gems/sentry-sidekiq)
-![Build Status](https://github.com/getsentry/sentry-ruby/actions/workflows/sentry_sidekiq_test.yml/badge.svg)
+![Build Status](https://github.com/getsentry/sentry-ruby/actions/workflows/tests.yml/badge.svg)
 [![Coverage Status](https://img.shields.io/codecov/c/github/getsentry/sentry-ruby/master?logo=codecov)](https://codecov.io/gh/getsentry/sentry-ruby/branch/master)
 [![Gem](https://img.shields.io/gem/dt/sentry-sidekiq.svg)](https://rubygems.org/gems/sentry-sidekiq/)
 [![SemVer](https://api.dependabot.com/badges/compatibility_score?dependency-name=sentry-sidekiq&package-manager=bundler&version-scheme=semver)](https://dependabot.com/compatibility-score.html?dependency-name=sentry-sidekiq&package-manager=bundler&version-scheme=semver)
diff --git a/sentry-yabeda/README.md b/sentry-yabeda/README.md
index 4ff7fd76f..dbd2c3b80 100644
--- a/sentry-yabeda/README.md
+++ b/sentry-yabeda/README.md
@@ -10,7 +10,7 @@
 ---
 
 [![Gem Version](https://img.shields.io/gem/v/sentry-yabeda.svg)](https://rubygems.org/gems/sentry-yabeda)
-![Build Status](https://github.com/getsentry/sentry-ruby/actions/workflows/sentry_yabeda_test.yml/badge.svg)
+![Build Status](https://github.com/getsentry/sentry-ruby/actions/workflows/tests.yml/badge.svg)
 [![Coverage Status](https://img.shields.io/codecov/c/github/getsentry/sentry-ruby/master?logo=codecov)](https://codecov.io/gh/getsentry/sentry-ruby/branch/master)
 [![Gem](https://img.shields.io/gem/dt/sentry-yabeda.svg)](https://rubygems.org/gems/sentry-yabeda/)