feat(agent-manager): reveal jump shortcut badges while modifier is held

[marius-kilocode]

The Agent Manager sidebar already supports jumping to items with ⌘1-9 (Ctrl+1-9 on Windows/Linux), but the badges that map a number to a card only appear when hovering that one card, so there is no way to see all assignments at a glance before pressing a number.

With this change, holding the jump modifier reveals the shortcut badge on every sidebar card at once, and releasing hides them again. The reveal reuses the existing hover overlay but keeps the delete button suppressed while the modifier is held, so peeking at shortcuts can never expose a destructive action. Cards without a badge (position 10 and beyond) keep their git stats visible, and the rename and pending-delete states still hide the badges exactly as before.

The tracking listens for the modifier key itself (Meta on macOS, Control elsewhere, matching the registered keybindings) in capture phase so terminal key handlers cannot swallow it, and a blur listener resets the state when the keyup is lost, for example when Cmd+Tab-ing away.

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (3 files)

• .changeset/agent-manager-modifier-shortcut-peek.md
• packages/kilo-vscode/webview-ui/agent-manager/AgentManagerApp.tsx
• packages/kilo-vscode/webview-ui/agent-manager/agent-manager.css

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_{Reviewed by claude-sonnet-5 · Input: 20 · Output: 5.9K · Cached: 429.7K}

_{Review guidance: REVIEW.md from base branch main}