shots: app titles get the weights the templates use (variable axis, used range or static weights; font-weight warning), palette.bg as one colour or a CSS gradient string (validated; contrast guard in shots check), photo backgrounds (palette.image, shots.feature.background) with overlay and cover crop

CHANGELOG.md

@@ -7,6 +7,15 @@
 - **`shots capture` / `render` find Playwright's chromium in a project's CommonJS playwright** whether it comes on the
   namespace or under `default`; when the module has no `chromium.launch`, the error names the resolved file and its
   exports (was "Cannot read properties of undefined (reading 'launch')").
+- **Heavy app-style headlines again:** `shots fonts` downloads the weights the templates use (the full `wght` axis of a
+  variable Google family, else the used range, else the static weights), so a family like Plus Jakarta Sans no longer
+  falls back to its thin 400 instance. `shots fonts` warns about weights a family or a local file (`{ weight }`) lacks;
+  `shots check` warns per image when a title was drawn at another weight (`font-weight`).
+- **palette.bg as a string:** one colour (flat) or a CSS gradient string now renders as given instead of a white
+  background; anything else fails config validation ("palette.bg must be a colour, a gradient or an array of 2-3
+  colours"). `shots check` warns when the title ink has low contrast against the pixels behind it (`contrast`).
+- **Photo backgrounds:** `palette.image` (+ `overlay`) and `shots.feature.background` put a cover-cropped photo under a
+  dark overlay (the Play feature graphic, optionally the screenshots); `shots check` checks the file and its size.
 
 ## 0.8.18 · 2026-10-20