sh1pt: install CoinPayPortal Invoice Bot (coinpay-invoice@1.0.0) (#9)

* Add .github/workflows/coinpay.yml via sh1pt coinpay-invoice@1.0.0

* Fix CI: commit pnpm-lock.yaml + install ffmpeg/imagemagick in test workflow

The sh1pt test workflow uses `cache: pnpm` + `pnpm install
--frozen-lockfile`, which require a committed lockfile, but .gitignore
excluded pnpm-lock.yaml — so the job failed with "Dependencies lock
file is not found". The test suite also shells out to ffmpeg/ffprobe and
ImageMagick, which aren't on the runner.

- Stop gitignoring pnpm-lock.yaml and commit it (pnpm 10.6.5)
- Add an apt install step for ffmpeg + imagemagick to test.yml

Verified locally: 85 passing, 12 pending, 0 failing.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

---------

Co-authored-by: sh1pt-actions-fleet[bot] <287014002+sh1pt-actions-fleet[bot]@users.noreply.github.com>
Co-authored-by: Anthony <anthony@profullstack.com>
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

Author: 3 people

.github/workflows/coinpay.yml

@@ -0,0 +1,31 @@
+# Managed by sh1pt Actions Fleet
+# pack: coinpay-invoice@1.0.0
+# install: sh1pt-actions-store
+# hash: sha256:34ad3313699d6a34845801f6d1c0963e36bee5d375678ffdd2a4bf0f46a17fa2
+name: CoinPayPortal invoice command
+
+on:
+  issue_comment:
+    types: [created]
+
+permissions:
+  issues: write
+  pull-requests: write
+
+concurrency:
+  group: coinpay-${{ github.workflow }}-${{ github.event.issue.number }}
+  cancel-in-progress: false
+
+jobs:
+  coinpay:
+    # Only spin up when a comment actually invokes the bot.
+    if: startsWith(github.event.comment.body, '/coinpay')
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - uses: profullstack/coinpaybot@v0
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          coinpay-api-key: ${{ secrets.COINPAY_API_KEY }}
+          coinpay-business-id: ${{ secrets.COINPAY_BUSINESS_ID }}
+          coinpay-base-url: https://coinpayportal.com