feat: Added Windows support

[RoyCoding8]

Updates (Resolves #153)

• Added PowerShell versions of the main scripts:
  • scripts/install.ps1
  • scripts/convert.ps1
  • scripts/lint-agents.ps1
• Added CMD wrappers that call PowerShell with execution policy bypass:
  • scripts/install.cmd
  • scripts/convert.cmd
  • scripts/lint-agents.cmd
• Updated docs with Windows commands and install guidance:
  • README.md
  • integrations/README.md
  • integrations/opencode/README.md

Important behavior notes

• Existing .sh scripts are untouched, so Linux/macOS workflows stay the same.
• OpenCode is still project-scoped via installer (.opencode/agents in current project).
• Global OpenCode install is documented as generate + copy to ~/.config/opencode/agents.
• Claude Code remains global via installer (~/.claude/agents).

[msitarzewski]

Hey @RoyCoding8 — nice work on this. The CMD wrappers and lint-agents.ps1 are solid additions.

Heads up: PR #172 from @ALVIN-YANG also adds PowerShell scripts for the same purpose. We can't merge both since they have overlapping implementations. Rather than pick one and close the other, would you two be open to collaborating on a single PR?

Your PR has the edge on completeness (CMD wrappers, lint support), but #172 has a more compact implementation style. A combined effort could be the best of both.

One request regardless: the Windows instructions are currently spread across 3 READMEs (README.md, integrations/README.md, integrations/opencode/README.md). Could you consolidate into a single "Windows Support" section in the main README instead? Keeps maintenance simpler.

Tagging @ALVIN-YANG so you can connect.

[msitarzewski]

Heads up: we're consolidating the Windows support conversation into a single Discussion: #197 — please weigh in there so we can align on one approach.