Replace the hardcoded POST_IMG_MAX limits baked into the resize helpers
with explicit per-caller maxDimension/maxBytes parameters. Pasted image
URLs now pre-shrink at the high-res 4000px/2MB post limits instead of
2000px/1MB, removing a quality bottleneck before compressImage runs.
Avatar/banner/onboarding and link thumbnails keep their 2000px/1MB
limits.
Also bring web doResize to parity with native by clamping dimensions via
a shared getResizedDimensions (hoisted into media/util.ts), and shadow
the mutated maxDimension param in compressImage as a local.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Eric Bailey
e14d559a13