Summary

The "Tools" tab in the Agents view renders in the tab bar but clicking it shows an empty panel — user-visible dead control. This is the only HIGH-severity UI remnant from the post-#2336 audit.

Evidence

• ui/src/ui/views/agents.ts:268-274 — tab bar renders { id: "tools", label: "Tools" } alongside live tabs (Overview / Files / Channels / Cron Jobs)
• ui/src/ui/views/agents.ts:195 — panel body is ${nothing /* tools panel removed — skills/tools UI gutted */}

When a user selects "Tools", the tab is highlighted but the panel area is empty.

Why this is safe

The panel was already gutted (#2240 / #2245 removed the skills/tools UI code tree). The only residue is the tab button itself. No code path relies on activePanel === "tools" producing rendered output.

Changes

• Remove { id: "tools", label: "Tools" } from the tabs array in renderAgentTabs (ui/src/ui/views/agents.ts:268-274)
• Narrow AgentsPanel type union (line 30) — drop "tools" if no other code path sets it
• Delete the ${nothing /* tools panel removed */} placeholder at line 195
• Grep for any consumer that sets activePanel = "tools" and update accordingly

AC

• grep -rn '"tools"' ui/src/ui/views/agents.ts returns no matches
• grep -rn 'id: "tools"' ui/src/ returns no matches
• pnpm check green (format + tsgo + lint + fork-integrity gates)
• pnpm test green
• pnpm test:ui:smoke green
• Visual: tab bar in Agents view shows only Overview / Files / Channels / Cron Jobs

Context

Discovered during the post-#2336 UI remnants audit. Highest-severity finding (only user-visible dead control in the sweep). Ship first — trivial diff, high trust impact.