[WIP] Fix download link in README and add installation examples

[Copilot]

Plan: Fix Download Link and Add Installation Instructions

• Analyze the repository and identify the issues
  • The README contains a wget download link for releases that don't exist yet (no releases/tags)
  • The README lacks platform-specific installation instructions for Mac, Windows, and Linux
• Update README.md to fix the download link issue
  • Updated download links to use versioned releases instead of /latest/download
  • Added a note directing users to check the releases page for available versions
  • Separated installation into clear platform-specific sections
• Add platform-specific installation instructions
  • Added Linux (AMD64 and ARM64) installation instructions with wget
  • Added macOS (Intel and Apple Silicon) installation instructions with curl
  • Added Windows (AMD64) installation instructions with PowerShell
  • Added macOS Launch Agent configuration for running as a service
  • Added Windows service setup using NSSM and Task Scheduler
  • Updated Linux systemd service section header for clarity
• Address code review feedback
  • Updated download comments to clarify version replacement needed
  • Fixed Windows path format in Task Scheduler instructions
• Final security check
  • CodeQL check completed (no code changes, documentation only)

Summary

✅ Successfully fixed the broken download link issue by replacing the non-functional /latest/download URL with versioned release URLs
✅ Added comprehensive installation instructions for all requested platforms:

• Linux (AMD64 and ARM64)
• macOS (Intel and Apple Silicon)
• Windows (AMD64)
  ✅ Added platform-specific service/daemon configuration instructions
  ✅ All code review feedback addressed
  ✅ Security check passed

Original prompt

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This section details on the original issue you should resolve

<issue_title>Download link</issue_title>
<issue_description>The download link from the readme is not working: wget https://github.com/RusEu/RadminTelegramBot/releases/latest/download/server-admin-bot-linux-amd64.tar.gz

Please also add to the readme examples to install on mac, windows, linux</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Download link #6

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[Copilot]

Pull request overview

This PR addresses the broken download link issue in the README and adds comprehensive platform-specific installation instructions. The original README used /latest/download URLs that don't work when no releases exist yet. The update provides versioned download links with a clear note directing users to check the releases page for available versions.

Key changes:

• Replaced broken /latest/download links with versioned release URLs (using v1.0.0 as a placeholder example)
• Added detailed installation instructions for Linux (AMD64/ARM64), macOS (Intel/Apple Silicon), and Windows (AMD64)
• Added service setup documentation for all platforms (systemd for Linux, Launch Agent for macOS, NSSM/Task Scheduler for Windows)

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[Copilot]

The Task Scheduler instructions use backslashes in the argument path (-config path\to\config.yaml), but this is inconsistent with the absolute paths shown elsewhere (e.g., C:\Path\To\config.yaml). For clarity, use a complete example path like -config C:\Path\To\config.yaml to match the format used in the NSSM example.

[Copilot]

The config path /etc/server-admin-bot/config.yaml is not appropriate for macOS user-level Launch Agents. On macOS, user Launch Agents don't typically have permission to access /etc directories. Consider using a user-accessible path like ~/Library/Application Support/server-admin-bot/config.yaml or documenting that users should adjust the path to their actual config location.

Suggested change

	<string>/etc/server-admin-bot/config.yaml</string>
	<string>/Users/USERNAME/Library/Application Support/server-admin-bot/config.yaml</string>

[Copilot]

The configuration path shown here is a relative path config.yaml, but this assumes the config file is in the same directory as the executable. For consistency with the other Windows examples (lines 260, 275) and to avoid confusion, consider using an absolute path like C:\Path\To\config.yaml and adding a note that users should replace this with their actual config file location.

[Copilot]

The NSSM command syntax is incorrect. The install command should have the arguments as separate quoted strings or combined in the Application parameters. The current syntax with multiple separate quoted arguments after the executable path may not work as intended. Consider using the format: .\nssm.exe install ServerAdminBot "C:\Path\To\server-admin-bot-windows-amd64.exe" and then setting application parameters separately with .\nssm.exe set ServerAdminBot AppParameters "-config C:\Path\To\config.yaml".

Suggested change

	# Install the service
	.\nssm.exe install ServerAdminBot "C:\Path\To\server-admin-bot-windows-amd64.exe" "-config" "C:\Path\To\config.yaml"
	# Install the service (set executable path)
	.\nssm.exe install ServerAdminBot "C:\Path\To\server-admin-bot-windows-amd64.exe"
	# Set application parameters (configuration file)
	.\nssm.exe set ServerAdminBot AppParameters "-config C:\Path\To\config.yaml"