ci: add codeflow card workflow (teal accent)

.github/workflows/codeflow-card.yml

@@ -0,0 +1,45 @@
+name: CodeFlow Card
+
+# Recomputes the codeflow stats card on every merge to main and on every
+# closed PR. The Action commits .github/codeflow-card.svg back to the repo;
+# the README references it via <img src=".github/codeflow-card.svg">.
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    types: [closed]
+  workflow_dispatch:
+
+permissions:
+  contents: write
+  pull-requests: write
+
+concurrency:
+  group: codeflow-card-${{ github.ref }}
+  cancel-in-progress: false
+
+jobs:
+  card:
+    runs-on: ubuntu-latest
+    # Skip PR-close events that weren't merged (avoids running on closed-without-merge).
+    if: github.event_name != 'pull_request' || github.event.pull_request.merged == true
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+
+      - name: Render CodeFlow Card
+        uses: braedonsaunders/codeflow/card@v1
+        with:
+          # Single SVG that adapts to the viewer's system theme via
+          # prefers-color-scheme — looks native on light and dark READMEs.
+          theme: auto
+          style: compact
+          # Green/blue accent (preset).
+          accent: teal
+          # Public README — show structure, not judgment.
+          show-grade: false
+          show-score: false
+          # Flip to true to enable thermal-receipt PR comments on every merge.
+          receipts: false

README.md

@@ -22,6 +22,10 @@
 
 </div>
 
+<p align="center">
+  <a href="https://github.com/braedonsaunders/codeflow"><img src=".github/codeflow-card.svg" alt="OpenStudio codebase stats — powered by codeflow" width="100%" /></a>
+</p>
+
 OpenStudio is a browser-based collaborative music studio built for real rehearsals, writing sessions, lessons, and online jams. The easiest way to use it is the hosted app at [openstudio.cafe](https://openstudio.cafe).
 
 If you want to make music with it, start there. If you want to self-host it or contribute to the codebase, this repository has what you need below.