Introduce changesets and bump-mobilelink workflow

.changeset/README.md

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+# Changesets
+
+This repository uses [changesets](https://github.com/changesets/changesets) to manage semver releases of `@autifyhq/autify-cli` and `@autifyhq/autify-cli-integration-test`.
+
+## When to add a changeset
+
+Add a changeset to any PR that should result in a new release of the CLI.
+
+## How
+
+```sh
+npx changeset
+```
+
+Pick the package, choose patch/minor/major, write a one-line description. Commit the generated `.changeset/*.md` file as part of your PR.
+
+## What happens after merge
+
+When your PR is merged to `main`, the changesets bot opens a "Version Packages" PR that bumps `package.json` and removes the changeset files. Merging that PR triggers the release: build, upload to S3, promote to channels, publish to npm, update the Homebrew tap, and create a GitHub release.
+
+The mobilelink version/hash is bumped automatically via a downstream PR when a new mobilelink release is published from.

.changeset/config.json

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+{
+  "$schema": "https://unpkg.com/@changesets/config@3.0.0/schema.json",
+  "changelog": "@changesets/cli/changelog",
+  "commit": false,
+  "fixed": [["@autifyhq/autify-cli", "@autifyhq/autify-cli-integration-test"]],
+  "linked": [],
+  "access": "public",
+  "baseBranch": "main",
+  "updateInternalDependencies": "patch",
+  "ignore": []
+}

.github/workflows/bump-mobilelink.yml

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+name: Bump mobilelink
+
+on:
+  repository_dispatch:
+    types: [mobilelink-released]
+
+jobs:
+  bump:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Validate payload
+        env:
+          VERSION: ${{ github.event.client_payload.version }}
+          SHA: ${{ github.event.client_payload.sha }}
+        run: |
+          if [[ ! "$VERSION" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+            echo "Invalid version: $VERSION"
+            exit 1
+          fi
+          if [[ ! "$SHA" =~ ^[0-9a-f]{9}$ ]]; then
+            echo "Invalid sha: $SHA"
+            exit 1
+          fi
+
+      - id: app-token
+        uses: actions/create-github-app-token@v3
+        with:
+          app-id: ${{ secrets.BOT_APP_ID }}
+          private-key: ${{ secrets.BOT_PRIVATE_KEY }}
+
+      - name: Get GitHub App User ID
+        id: get-user-id
+        run: echo "user-id=$(gh api "/users/${{ steps.app-token.outputs.app-slug }}[bot]" --jq .id)" >> "$GITHUB_OUTPUT"
+        env:
+          GH_TOKEN: ${{ steps.app-token.outputs.token }}
+
+      - name: Configure git user
+        run: |
+          git config --global user.name '${{ steps.app-token.outputs.app-slug }}[bot]'
+          git config --global user.email '${{ steps.get-user-id.outputs.user-id }}+${{ steps.app-token.outputs.app-slug }}[bot]@users.noreply.github.com'
+
+      - uses: actions/checkout@v4
+        with:
+          token: ${{ steps.app-token.outputs.token }}
+
+      - name: Create bump branch
+        env:
+          VERSION: ${{ github.event.client_payload.version }}
+        run: git checkout -b "chore/bump-mobilelink-${VERSION}"
+
+      - name: Update mobilelink manifest
+        env:
+          VERSION: ${{ github.event.client_payload.version }}
+          SHA: ${{ github.event.client_payload.sha }}
+        run: |
+          FILE="src/autify/mobile/mobilelink/mobilelink.json"
+          jq -n '{version: env.VERSION, hash: env.SHA}' > "$FILE"
+          cat "$FILE"
+
+      - name: Write changeset
+        env:
+          VERSION: ${{ github.event.client_payload.version }}
+        run: |
+          mkdir -p .changeset
+          cat > ".changeset/bump-mobilelink-${VERSION}.md" <<EOF
+          ---
+          "@autifyhq/autify-cli": patch
+          ---
+
+          Update mobilelink to v${VERSION}
+          EOF
+
+      - name: Commit and push
+        env:
+          VERSION: ${{ github.event.client_payload.version }}
+        run: |
+          git add -A
+          git commit -m "chore: bump mobilelink to v${VERSION}"
+          git push origin "chore/bump-mobilelink-${VERSION}"
+
+      - name: Open pull request
+        env:
+          GITHUB_TOKEN: ${{ steps.app-token.outputs.token }}
+          VERSION: ${{ github.event.client_payload.version }}
+          SHA: ${{ github.event.client_payload.sha }}
+        run: |
+          gh pr create \
+            --base main \
+            --head "chore/bump-mobilelink-${VERSION}" \
+            --title "chore: bump mobilelink to v${VERSION}" \
+            --body "Automated bump of mobilelink to v${VERSION} (sha: ${SHA}). Triggered by mobilelink release."