fix: auto-install installer deps on Windows

[zhao0112]

Summary

This PR addresses #304 by making the installer dependency check more resilient on Windows.

Problem

On Windows (Git Bash/WSL), installations can fail early when jq (or curl) is not already installed, and users are left with a manual setup error.

Changes

• Added install_dependency_on_windows() to attempt a best-effort dependency install for missing dependencies (curl, jq) via common Windows package managers: winget, scoop, and choco.
• Updated check_dependencies() to:
  • collect missing dependencies,
  • attempt Windows auto-install for missing deps when possible,
  • re-check dependency availability before failing with instructions.

Closes #304

Validation

• bash -n install.sh
• bash install.sh list (Linux environment)
• bash scripts/tests/test-installer-files.sh

Risks

• On Windows without winget/scoop/choco, users still need to install missing dependencies manually.
• The new install attempts run with best-effort behavior and proceed only after successful dependency detection; there is no hard guarantee every Windows environment has a compatible package manager.