Parent: #1235
Blocked by: #1240

Summary

Add TUI visualization for task orchestration DAG with live status updates.

Branch: feat/m33/orchestration-tui
Feature flags: orchestration + tui

Deliverables

New files

• crates/zeph-tui/src/widgets/plan_view.rs — PlanView widget

Modified files

• crates/zeph-tui/src/widgets/mod.rs — add plan_view module
• crates/zeph-tui/src/layout.rs — integrate PlanView
• src/init.rs — wizard update for [orchestration] settings

TUI widget

Task graph table with columns:

• # (TaskId index)
• Title (truncated)
• Status (colored: yellow=Running, green=Completed, red=Failed, dim=Skipped, cyan=Ready)
• Agent (assigned agent def name or hint)
• Duration (wall-clock time)

Status indicators with spinners for Running tasks per TUI rules.

Tests (~5)

• Widget renders correct row count
• Status colors map correctly
• Empty graph renders placeholder message
• Widget handles graph with mixed statuses

Dependencies

Blocked by: Phase 5 (#1240)
Can run in parallel with: Phase 7 (#1242)