chore: auto triage and fmt (#204)

* chore: auto triage and fmt

* chore: address PR review — add area:core, setup.rs to auth, move formatter

---------

Co-authored-by: jpoehnelt-bot <jpoehnelt-bot@users.noreply.github.com>

.changeset/automation-workflow.md

@@ -0,0 +1,5 @@
+---
+"@googleworkspace/cli": patch
+---
+
+chore: add automation workflow for auto-fmt, CLA labeling, and file-based PR triage

.github/labeler.yml

@@ -0,0 +1,68 @@
+# Labels applied to PRs based on changed files.
+# Used by the actions/labeler action in .github/workflows/automation.yml
+
+"area: auth":
+  - changed-files:
+      - any-glob-to-any-file:
+          - src/auth.rs
+          - src/auth_commands.rs
+          - src/setup.rs
+          - src/accounts.rs
+          - src/credential_store.rs
+          - src/token_storage.rs
+          - src/oauth_config.rs
+
+"area: discovery":
+  - changed-files:
+      - any-glob-to-any-file:
+          - src/discovery.rs
+          - src/services.rs
+
+"area: http":
+  - changed-files:
+      - any-glob-to-any-file:
+          - src/executor.rs
+          - src/client.rs
+
+"area: tui":
+  - changed-files:
+      - any-glob-to-any-file:
+          - src/setup_tui.rs
+
+"area: mcp":
+  - changed-files:
+      - any-glob-to-any-file:
+          - src/mcp_server.rs
+
+"area: skills":
+  - changed-files:
+      - any-glob-to-any-file:
+          - src/generate_skills.rs
+          - skills/**
+
+"area: docs":
+  - changed-files:
+      - any-glob-to-any-file:
+          - "*.md"
+          - docs/**
+
+"area: distribution":
+  - changed-files:
+      - any-glob-to-any-file:
+          - .github/workflows/release.yml
+          - .github/workflows/release-changesets.yml
+          - dist-workspace.toml
+          - Cargo.toml
+
+"area: core":
+  - changed-files:
+      - any-glob-to-any-file:
+          - src/main.rs
+          - src/commands.rs
+          - src/error.rs
+          - src/formatter.rs
+          - src/fs_util.rs
+          - src/helpers/**
+          - src/text.rs
+          - src/validate.rs
+          - src/schema.rs

.github/workflows/automation.yml

@@ -0,0 +1,101 @@
+# Copyright 2026 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: Automation
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    types: [opened, synchronize, reopened]
+  check_run:
+    types: [completed]
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  format:
+    name: Format
+    if: github.event_name == 'push'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.GOOGLEWORKSPACE_BOT_TOKEN }}
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt
+
+      - name: Run cargo fmt
+        run: cargo fmt --all
+
+      - name: Commit and push
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git add -A
+          git diff --cached --quiet || git commit -m "style: cargo fmt" && git push
+
+  cla-label:
+    name: CLA Label
+    if: >-
+      github.event_name == 'check_run' &&
+      github.event.check_run.name == 'cla/google'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Update CLA label
+        uses: actions/github-script@v7
+        with:
+          github-token: ${{ secrets.GOOGLEWORKSPACE_BOT_TOKEN }}
+          script: |
+            const cr = context.payload.check_run;
+            const passed = cr.conclusion === 'success';
+
+            for (const pr of cr.pull_requests) {
+              const labels = passed
+                ? { add: 'cla: yes', remove: 'cla: no' }
+                : { add: 'cla: no', remove: 'cla: yes' };
+
+              await github.rest.issues.addLabels({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: pr.number,
+                labels: [labels.add],
+              });
+
+              try {
+                await github.rest.issues.removeLabel({
+                  owner: context.repo.owner,
+                  repo: context.repo.repo,
+                  issue_number: pr.number,
+                  name: labels.remove,
+                });
+              } catch (e) {
+                // Label not present — ignore
+              }
+            }
+
+  file-labeler:
+    name: File Labeler
+    if: github.event_name == 'pull_request'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/labeler@v5
+        with:
+          repo-token: ${{ secrets.GOOGLEWORKSPACE_BOT_TOKEN }}
+          sync-labels: true