UI Evidence — screenshots are mandatory for UI/UX changes

Any PR touching frontend/{pages,components,layouts,assets}/** must show what changed visually: before/after screenshots in the PR description, plus a GIF/video when the change is a flow or animation. Only skip this for refactors with zero visual effect — and say so explicitly in the PR description.

Screenshots (always)

1. Boot + seed:

   tools/agent/boot_stack.sh
   cd backend && uv run python ../tools/agent/seed_org.py --demo
   export PLAYWRIGHT_BROWSERS_PATH=/opt/pw-browsers   # cloud sandboxes
   

2. Capture before (on the base branch or with your change stashed) and after — same page, same viewport:

   cd frontend
   node ../tools/agent/capture.mjs http://localhost:3000/<page> before.png
   # apply change / unstash, rebuild if prod mode:
   node ../tools/agent/capture.mjs http://localhost:3000/<page> after.png
   

   For authenticated pages, log in once with a throwaway Playwright script and context.storageState({ path: 'state.json' }), then pass --state state.json.
3. For RTL-sensitive work, capture he as well as en (set the locale via the picker in /settings/general or the X-Locale header).

Videos / GIFs (for flows, animations, drag-drop, streaming UI)

Static shots can't show a flow. Record one:

node ../tools/agent/capture.mjs http://localhost:3000/<page> flow.webm --video 10
# or drive a multi-step flow in a throwaway spec with recordVideo, then:
ffmpeg -i flow.webm -vf "fps=10,scale=960:-1:flags=lanczos" flow.gif

GitHub renders GIFs inline; .webm cannot be attached via the API.

Attaching evidence to the PR

Commit the files under media/pr/<branch-slug>/ and reference them in the PR body by their raw URL so they render inline:

## UI changes
| Before | After |
|--------|-------|
| ![before](https://raw.githubusercontent.com/bagofwords1/bagofwords/<branch>/media/pr/<branch-slug>/before.png) | ![after](.../after.png) |

![flow](https://raw.githubusercontent.com/bagofwords1/bagofwords/<branch>/media/pr/<branch-slug>/flow.gif)

Rules:

• Keep each image < 1 MB where possible (GIFs < 5 MB — trim fps/scale, not length).
• media/pr/ files may be deleted after the PR merges; they are evidence, not assets.
• Never capture screens containing real credentials, tokens, or customer data — seeded sandbox data only.
• Humans attaching evidence may simply drag-and-drop into the PR description instead.