Fleet UI Phase 2: Dropbox / task visibility

[Wirasm]

Phase 2: Dropbox / Task Visibility

Part of #562 (Fleet UI Epic)

PRD: .claude/PRPs/prds/fleet-ui-honryu-visibility.prd.md — Phase 2

What

Show task assignments, acknowledgments, and reports from the fleet dropbox protocol in the UI.

Why

Answers: "What was each worker asked to do? Did they acknowledge? Did they finish?" — the second most important question after agent status.

Scope

2.1 Extend FleetStore with Dropbox State

• Add HashMap<String, DropboxState> to FleetStore
• Call existing kild_core::sessions::dropbox::read_dropbox_state() per session
• Same 3s refresh timer as agent status
• Add facade method dropbox_state(session_id) to AppState

2.2 Dashboard Cards: Task Badge

• When dropbox state exists, show task badge row on cards:
  • Task assigned, no ack: "Task #003" + "pending" badge in copper
  • Task acked (task_id == ack): "Task #003" + "acked" badge in aurora
  • Has report: "Task #003" + "done" badge in ice
  • First ~60 chars of task content as muted subtitle

2.3 Detail View: Fleet Section

• After "Git" section, add "Task" section when dropbox state exists:
  • Task ID + ack status badge
  • Full task content in a surface-bg scrollable box
  • Report content in a separate surface-bg box with ice accent
  • Delivery method from latest history entry

Files

• crates/kild-ui/src/state/fleet.rs — extend with dropbox state
• crates/kild-ui/src/state/app_state/state.rs — add dropbox_state facade
• crates/kild-ui/src/views/dashboard_view.rs — task badges on cards
• crates/kild-ui/src/views/detail_view.rs — fleet/task section
• crates/kild-ui/src/views/main_view/rendering.rs — pass fleet data to detail view

Depends on

• Fleet UI Phase 1: Agent status visibility #563 (Phase 1: FleetStore foundation)

Verification

• kild inject test-worker "do the thing" → card shows "Task Implement file-based persistence system #1 pending"
• Worker acks → card shows "Task Implement file-based persistence system #1 acked" in aurora
• Worker reports → detail view shows full report content