docs: add screenshot showcase to README + gallery

Replace the placeholder Screenshots section with a hero voice/video shot
and a curated 6-shot grid (chat, screen-share controls, spaces, federated
DMs, social discovery, federation admin), linking to a new
docs/screenshots.md gallery of all 14 shots grouped by feature.

Images are optimized to 1600px WebP (~1.2MB total vs ~45MB raw); raw
originals in demo-pictures/ are gitignored.
This commit is contained in:
Jannis Braun
2026-07-01 01:06:08 +02:00
parent cfe4fd80c4
commit cb16c8feac
17 changed files with 150 additions and 10 deletions
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