When a new proposal lands in the dashboard's list, the operator
shouldn't have to compare the list to a mental snapshot to spot
what's new. Render newly-arrived proposals in green for the first
five seconds after they show up.
- _try_init_green: initialise a green color pair; returns 0 if the
terminal lacks color so the highlight degrades to no-op.
- _main_loop tracks first_seen[proposal_id] across refresh ticks,
pruning entries when a proposal leaves the queue.
- _render ORs green into the existing attr (composes with selection
reverse-video — terminal handles the mix).
Applies to all tool types (cred-proxy-block, pipelock-block,
capability-block). If a tool-specific highlight is wanted later,
filter on qp.proposal.tool in _is_recent.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
didericis
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