feat(framework): Queue "Needs you" list — open PRs across projects (#632)

[suleimansh]

Closes #632. Part of #624 (the Queue).

The first slice of Queue A — the cross-project "Needs you" list. Rom's design (#624): proposals and finished work are both just PRs, so the bulk of "needs a human" is the set of open PRs across the registered projects, merge to confirm / close to reject.

Server

• buildInterventions(projects) — rolls up every registered project's open, non-draft PRs via gh pr list, newest first. Deduped by PR url (a monorepo registered at root + a subdir would otherwise list the same PR twice). Degrades to empty when there's no remote / gh is missing / on the relay (no checkout). Injectable PR lister, unit-tested off disk.
• onInterventions() read RPC, wired like onOverview.

Dashboard (client, bundled)

• A "Needs you" card at the top of the Overview page — each item links straight to its PR on GitHub. Empty state when caught up.
• A count badge on the sidebar Overview nav.
• Polled once in the shell and shared by both, so there's a single gh poll (slow cadence — PRs change rarely).

Verification

• 4 projection unit tests (rollup, draft exclusion, error tolerance, dedup) + framework/dashboard build + typecheck green.
• Dogfooded live through a real daemon: onInterventions returned the real open PR chore: version packages #285 once (draft spike(#610): WebDriver PoC on the routines fire API #623 correctly excluded).

Next (follow-ups on #624): the second Queue-A source — a run paused at an await gate ("awaiting your answer") — then #627 notifications firing off this same set.