chore: upgrade deps and clean build warnings

[mxyhi]

Summary

• upgrade frontend direct dependencies and refresh pnpm-lock.yaml
• upgrade Rust dependencies including rand 0.10, reqwest 0.13, sysinfo 0.38, and toml_edit 0.25
• adapt recharts v3 tooltip/legend typings and rand v0.10 API changes
• remove unused vibe-kanban-web-companion and silence the accepted Vite chunk warning for the Tauri desktop bundle

Validation

• pnpm test:run
• pnpm build
• cargo check --workspace
• cargo test --workspace --no-run

Notes

• sysinfo remains on the 0.38 line, but the lockfile stays at 0.38.0 because 0.38.3 conflicts with tauri 2.10.3 on macOS (objc2-core-foundation resolution)
• preserved the existing local Agentation setup in src/main.tsx