feat(recovery,context): tier-2 intent-holder arbiter + remaining-delta pinning + surfaced signal events

- recovery: two-tier repair ladder — owner then arbiter (recovery stage recast
  as intent-holder, holds initial intent, reconciles cross-file contract disputes)
  with independent INTENT_ROUTE_BUDGET; RecoveryRoutingTest coverage
- context: remaining-delta checklist pinning (RemainingDelta{Pinning,Entry}Test)
- surface write-only events (session name, quality signals) into stats/browse
- parseToolArguments lenient-Json fallback for bare-key drift
- tools: ChildProcess seam

docs/ui/web-ui-design-spec.md

@@ -1,21 +0,0 @@
-# Web UI Design Specification
-
-## Aesthetic
-- **Theme**: Soft Rounded + Blue Accent.
-- **Consistency**: Should align with the TUI layout plan.
-
-## Layout
-- **Sidebar**: Centralized navigation.
-- **Main Area**: Dynamic content based on selection.
-- **Event Log**: Easily accessible (Source of Truth).
-
-## Components
-- **Cards**: For task summaries, status updates.
-- **Badges**: For status (e.g., `CLAIMED`, `PENDING`, `COMPLETED`).
-- **Progress Bars**: For multi-step task progress.
-- **Service Layer**: Placeholders for `apps/server` endpoints.
-
-## UX Priorities
-- Clear hierarchy.
-- Intuitive navigation.
-- Avoid clutter (maintain information density).