diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c8483dd5..b6c0bf3c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -74,6 +74,18 @@ jobs:
             -destination 'platform=iOS Simulator,name=iPhone 16,OS=latest' \
             -skipMacroValidation
 
+  test-visionos-simulator:
+    name: Test · visionOS Simulator
+    runs-on: macos-15
+    steps:
+      - uses: actions/checkout@v6
+      - name: Test on visionOS Simulator
+        run: |
+          xcodebuild test \
+            -scheme Flow \
+            -destination 'platform=visionOS Simulator,name=Apple Vision Pro,OS=26.2' \
+            -skipMacroValidation
+
   lint:
     name: Lint
     runs-on: macos-15
diff --git a/.github/workflows/dependabot-auto-merge.yml b/.github/workflows/dependabot-auto-merge.yml
new file mode 100644
index 00000000..13fe7d7b
--- /dev/null
+++ b/.github/workflows/dependabot-auto-merge.yml
@@ -0,0 +1,30 @@
+name: Dependabot auto-merge
+
+on:
+  pull_request_target:
+    types: [opened, synchronize]
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  auto-merge:
+    name: Enable auto-merge for patch/minor updates
+    if: github.actor == 'dependabot[bot]'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Fetch Dependabot metadata
+        id: meta
+        uses: dependabot/fetch-metadata@v2
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Enable auto-merge
+        if: |
+          steps.meta.outputs.update-type == 'version-update:semver-patch' ||
+          steps.meta.outputs.update-type == 'version-update:semver-minor'
+        run: gh pr merge --auto --squash "$PR_URL"
+        env:
+          PR_URL: ${{ github.event.pull_request.html_url }}
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/greet.yml b/.github/workflows/greet.yml
index c936159f..ad5fb3bc 100644
--- a/.github/workflows/greet.yml
+++ b/.github/workflows/greet.yml
@@ -14,7 +14,7 @@ jobs:
   greet:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/github-script@v7
+      - uses: actions/github-script@v9
         with:
           script: |
             const sender = context.payload.sender.login;
diff --git a/.github/workflows/lint-autofix.yml b/.github/workflows/lint-autofix.yml
new file mode 100644
index 00000000..dd96ef6e
--- /dev/null
+++ b/.github/workflows/lint-autofix.yml
@@ -0,0 +1,82 @@
+name: Lint auto-fix
+
+on:
+  pull_request:
+    types: [opened, synchronize]
+    paths:
+      - "Sources/**"
+      - "Tests/**"
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  autofix:
+    name: Apply swift-format and SwiftLint fixes
+    # Forks don't have write access — skip silently; CI lint will catch issues.
+    if: github.event.pull_request.head.repo.fork == false
+    runs-on: macos-15
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          ref: ${{ github.event.pull_request.head.ref }}
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Install linters
+        run: brew install swift-format swiftlint
+
+      - name: swift-format auto-fix
+        run: swift-format format --recursive --in-place Sources Tests
+
+      - name: SwiftLint auto-fix
+        run: swiftlint --fix || true
+
+      - name: Commit fixes
+        id: commit
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add Sources Tests
+          if git diff --staged --quiet; then
+            echo "changed=false" >> "$GITHUB_OUTPUT"
+          else
+            git commit -m "Apply swift-format and SwiftLint auto-fixes"
+            git push
+            echo "changed=true" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Comment on PR
+        if: steps.commit.outputs.changed == 'true'
+        uses: actions/github-script@v9
+        with:
+          script: |
+            const MARKER = '<!-- lint-autofix -->';
+            const body = [
+              MARKER,
+              '> [!NOTE]',
+              '> **Lint auto-fix applied.** `swift-format` and `swiftlint --fix` found issues and committed corrections to this branch. Pull the latest commit before pushing further changes.',
+            ].join('\n');
+
+            const { data: comments } = await github.rest.issues.listComments({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.payload.pull_request.number,
+            });
+
+            const existing = comments.find(c => c.body.startsWith(MARKER));
+            if (existing) {
+              await github.rest.issues.updateComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                comment_id: existing.id,
+                body,
+              });
+            } else {
+              await github.rest.issues.createComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: context.payload.pull_request.number,
+                body,
+              });
+            }
diff --git a/.github/workflows/slash-update-snapshots.yml b/.github/workflows/slash-update-snapshots.yml
new file mode 100644
index 00000000..aa2fb9b1
--- /dev/null
+++ b/.github/workflows/slash-update-snapshots.yml
@@ -0,0 +1,67 @@
+name: /update-snapshots
+
+on:
+  issue_comment:
+    types: [created]
+
+permissions:
+  actions: write
+  issues: write
+  pull-requests: write
+
+jobs:
+  trigger:
+    name: Trigger snapshot update for PR
+    if: |
+      github.event.issue.pull_request &&
+      contains(github.event.comment.body, '/update-snapshots') &&
+      contains(fromJSON('["OWNER","MEMBER","COLLABORATOR"]'), github.event.comment.author_association)
+    runs-on: ubuntu-latest
+    steps:
+      - name: Add rocket reaction
+        uses: actions/github-script@v9
+        with:
+          script: |
+            await github.rest.reactions.createForIssueComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              comment_id: context.payload.comment.id,
+              content: 'rocket'
+            });
+
+      - name: Get PR details
+        id: pr
+        uses: actions/github-script@v9
+        with:
+          script: |
+            const pr = await github.rest.pulls.get({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              pull_number: context.issue.number
+            });
+            core.setOutput('ref', pr.data.head.ref);
+            core.setOutput('is_fork', pr.data.head.repo.fork);
+
+      - name: Dispatch update-snapshots workflow
+        if: steps.pr.outputs.is_fork != 'true'
+        uses: actions/github-script@v9
+        with:
+          script: |
+            await github.rest.actions.createWorkflowDispatch({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              workflow_id: 'update-snapshots.yml',
+              ref: '${{ steps.pr.outputs.ref }}'
+            });
+
+      - name: Comment — fork PR limitation
+        if: steps.pr.outputs.is_fork == 'true'
+        uses: actions/github-script@v9
+        with:
+          script: |
+            await github.rest.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: '⚠️ `/update-snapshots` can only run for branches in this repository, not for forks. A maintainer can trigger it manually from the Actions tab.'
+            });
diff --git a/.github/workflows/update-snapshots.yml b/.github/workflows/update-snapshots.yml
new file mode 100644
index 00000000..499ce56e
--- /dev/null
+++ b/.github/workflows/update-snapshots.yml
@@ -0,0 +1,44 @@
+name: Update Snapshots
+
+on:
+  workflow_dispatch:
+
+jobs:
+  update:
+    name: Regenerate snapshot references
+    runs-on: macos-15
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          ref: ${{ github.ref }}
+
+      - name: Select Xcode 16.4
+        uses: maxim-lobanov/setup-xcode@v1
+        with:
+          xcode-version: "16.4"
+
+      - name: Delete existing reference images
+        run: find Tests/FlowTests/Snapshot/__Snapshots__ -name "*.png" -delete
+
+      - name: Record new snapshots
+        run: |
+          swift test --filter ImageSnapshots || true
+          swift test --filter ReadmeSnapshotTests || true
+
+      - name: Verify new snapshots pass
+        run: |
+          swift test --filter ImageSnapshots
+          swift test --filter ReadmeSnapshotTests
+
+      - name: Commit updated references
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add Tests/FlowTests/Snapshot/__Snapshots__/
+          git diff --staged --quiet && echo "Nothing to commit" || {
+            git commit -m "Update snapshot references"
+            git pull --rebase origin ${{ github.ref_name }}
+            git push
+          }