[codex] Add 4K SF Symbols scene

.gitattributes

@@ -16,6 +16,10 @@ packages/producer/tests/**/*.mov filter=lfs diff=lfs merge=lfs -text
 packages/producer/tests/**/*.webm filter=lfs diff=lfs merge=lfs -text
 packages/producer/tests/**/*.png filter=lfs diff=lfs merge=lfs -text
 
+# High-resolution example outputs and generated sprite sheets.
+examples/boy-meets-girl-symbols/renders/*.mp4 filter=lfs diff=lfs merge=lfs -text
+examples/boy-meets-girl-symbols/assets/sf/figure-walk-sheet/*.png filter=lfs diff=lfs merge=lfs -text
+
 # ONNX models must ALWAYS use LFS regardless of location: a 31 MB ppmattingv2
 # model was once committed raw into skills/ then deleted — but a raw commit
 # lives in history forever. No path in the repo legitimately ships a raw .onnx.

.gitignore

@@ -87,6 +87,8 @@ examples/*
 !examples/k8s-jobs/**
 !examples/gcp-cloud-run
 !examples/gcp-cloud-run/**
+!examples/boy-meets-girl-symbols
+!examples/boy-meets-girl-symbols/**
 # …but never the local smoke run's build/render artifacts.
 examples/gcp-cloud-run/scripts/gcp-smoke-artifacts/
 packages/studio/data/

examples/boy-meets-girl-symbols/README.md

@@ -0,0 +1,54 @@
+# Boy Meets Girl Symbols
+
+A 12-second Hyperframes scene built from generated SF Symbol assets.
+
+## Source
+
+- Composition: `index.html`
+- Generated SF Symbol assets: `assets/sf/`
+- Output target: 4K landscape, 60fps, high-quality MP4.
+- Main walk cycle: 60-frame, 30fps, 2x source-density sprite sheet.
+
+## Preview
+
+From the repo root:
+
+```bash
+npx hyperframes preview --port 3017
+```
+
+Open:
+
+```text
+http://localhost:3017/#project/boy-meets-girl-symbols
+```
+
+## Verify
+
+```bash
+npx hyperframes lint examples/boy-meets-girl-symbols
+npx hyperframes validate examples/boy-meets-girl-symbols
+npx hyperframes inspect examples/boy-meets-girl-symbols --samples 15
+```
+
+## Render
+
+From the repo root:
+
+```bash
+npx hyperframes render examples/boy-meets-girl-symbols \
+  --quality high \
+  --fps 60 \
+  --resolution landscape-4k \
+  --output examples/boy-meets-girl-symbols/renders/boy-meets-girl-symbols-4k60.mp4
+```
+
+Confirm the encoded file:
+
+```bash
+ffprobe -v error \
+  -show_entries format=duration,size \
+  -show_entries stream=width,height,r_frame_rate,codec_name \
+  -of json \
+  examples/boy-meets-girl-symbols/renders/boy-meets-girl-symbols-4k60.mp4
+```