Drive-by insight sweep: scroll-to-bottom, honest cadence, chunk deep-links, true fullscreen, ready-to-record

[spashii]

Services five live agent_insight rows ahead of the 13th-week retro day 2:

• Scroll-to-bottom floating affordance on long conversation transcripts (asked out loud during the retro recording)
• Honest cadence labels: proposal cards and the canvas freshness cluster derive from the actual loop config; static canvases now say "does not update on its own" instead of a hardcoded "updates every few minutes"
• Chunk deep-links: conversation references land on the exact transcript chunk (#chunk-<id> anchor, scroll + highlight) when chunk-level data exists; conversation-level links unchanged otherwise
• True fullscreen: canvas presentation mode fills 100dvh/100dvw, no dead bands
• Ready-to-record: participant portal confirmation step between name entry and recording; skipOnboarding=1 still skips straight through (and that path now sends visitorId, fixing funnel attribution for skip flows)

Gates: tsc, biome lint, lingui extract+compile, vitest (5 tests). Report: echo/docs/plans/smart-loop-briefs/wave29-REPORT.md

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