Fix dash status badges + Peak CPU column, default TUI workflows to newest-first

[daniel-thom]

Summary

Two small bug fixes that came up after PR #351 landed.

Dash status indexing was broken everywhere

The dash assumed job.status / result.status was an integer index into local ['Uninitialized', 'Blocked', ...] arrays, but the API serves it as a snake_case string per the OpenAPI JobStatus enum (#[serde(rename_all = \"snake_case\")]). Symptoms:

• Jobs table "Elapsed" column always rendered - because the `isRunning` check (statusNames[job.status] === 'Running') was comparing undefined to 'Running'.
• Status badges quietly fell back to status-unknown and displayed the raw lowercase string (e.g. running) instead of the capitalized "Running" with the right colors.
• DAG visualizer rendered every node gray because its integer-keyed statusColors / statusNames maps missed on every string status.

Added JOB_STATUS_NAMES + formatJobStatus() + jobStatusSlug() helpers to app-utils.js (string-keyed, with a defensive integer fallback) and routed all 8 badge call sites in app-tables.js, app-details.js, app-job-details.js, and app-debugging.js through them. Rekeyed DAGVisualizer.statusColors and statusNames to snake_case strings.

Results tab showed Avg CPU instead of Peak CPU

The CLI's torc results list shows Peak CPU %, but the dash results tab was showing the avg_cpu_percent field under an "Avg CPU %" header. Switched both the column header and the value to peak_cpu_percent in the main results table (app-tables.js) and the per-job results sub-tab (app-job-details.js).

TUI workflows list now defaults to newest-first

The dash already sorts workflows by id descending so users see the most recent runs without scrolling; the TUI was inheriting whatever order the API returned (ascending by id). Switched the default workflows_sort to IdDesc in src/tui/app.rs so the two surfaces agree.

Sort is still user-controllable — the existing ID column shortcut cycles Desc → Asc → unsorted as before, just from a different starting point.

Test plan

• `cargo build --bin torc --features "client,tui,plot_resources"` — clean
• `cargo nextest run --lib` — passes
• Manual: open dash, confirm jobs table "Elapsed" shows time for running jobs (was always `-`)
• Manual: confirm status badges show capitalized names with proper colors (Running blue, Completed green, etc.)
• Manual: open the DAG view; nodes should be colored by status, not all gray
• Manual: open results tab; header should say "Peak CPU %" and values should match `torc results list`
• Manual: launch TUI; workflows list should show newest IDs at the top

🤖 Generated with Claude Code

[Copilot]

Pull request overview

Fixes dashboard rendering regressions caused by the API switching JobStatus from legacy integers to snake_case strings, corrects a CPU column to show peak usage, and aligns the TUI workflow list default sort order with the dashboard (newest-first).

Changes:

• Add centralized JobStatus formatting + badge slug helpers and route status badge call sites through them; re-key DAG visualizer status maps to string statuses.
• Fix results tables to display Peak CPU % (header + value) using peak_cpu_percent.
• Default TUI workflows sort to IdDesc (newest-first).

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
torc-dash/static/js/dag.js	Re-keys DAG status color/name maps to snake_case string statuses.
torc-dash/static/js/app-utils.js	Adds JOB_STATUS_NAMES, JOB_STATUS_ORDER, formatJobStatus(), jobStatusSlug() helpers.
torc-dash/static/js/app-tables.js	Uses new status helpers in tables; switches results CPU column to peak.
torc-dash/static/js/app-job-details.js	Uses new status helpers; switches per-job results CPU column to peak.
torc-dash/static/js/app-details.js	Uses new status helpers; switches results CPU column to peak; updates status filtering/search text.
torc-dash/static/js/app-debugging.js	Uses new status helpers for debug job status display.
src/tui/app.rs	Changes default workflows sort to IdDesc (newest-first).

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