Dead code (from the abandoned thumb-zone/Explore-sheet nav experiment):
- OasisMobile.css: removed ~90 lines of orphaned CSS (.oasis-bottombar-fork/.bb-fab-*,
.hive-sheet*/.fork-sheet*/.hsq-*, .omt-spacer, .hive-sheet-seg/.hs-seg, dead
.oasis-bottombar-fixed) — no element emits any of them.
- main_views.js: removed renderHiveSheet() (never called; sole emitter of that CSS).
- karvan_view.js: dropped dead export karvanShortId + unused karvanView param.
- Added a style for .karvan-msg-live (client emitted it with no rule).
Karvan security (from the review):
- GET /karvan/:id only adopts a mirror room on a real navigation (sec-fetch-dest
document / Accept text/html), not on <img>/subresources → fixes a CSRF that could
spam/evict the user's ephemeral rooms.
- Cap room.members at 50 (was unbounded; each poll echoed it back).
- Reject signal payloads >16KB (SDP/ICE are tiny) — anti memory-DoS.
- karvan.js: guard malformed {kind:desc} signals so one bad signal can't abort a poll batch.
Tests: 15/15 (added members-cap + oversized-payload). Verified: CSRF fix (nav=200,
subresource=302), pages unchanged after CSS removal, boot clean.
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