Release Tokcat 0.1.24

[handlecusion]

Summary

• Add agent dashboard tabs with overview and per-agent usage graphs
• Add OAuth quota usage for Codex and Claude
• Add 2D bar graph hover details and live session overview
• Bump Tokcat to 0.1.24

Verification

• npx tsc --noEmit
• npm run build
• cargo check
• npm run tauri:build (created app/DMG, then failed locally because TAURI_SIGNING_PRIVATE_KEY is not set)