[UX] Onboarding, installer experience, and help

[erikdarlingdata]

Summary

First-time users face friction at multiple points: no post-install guidance, no first-run wizard, CLI installer fails without interactive mode, and in-app help is minimal.

Source: Comprehensive themed agent review (UX Designer)

User Journey Pain Points

1. Installer completes → "Now what?" (no next steps)
2. Dashboard opens → empty page, must re-enter server details (already provided to installer!)
3. Lite adds server → blank data for 1-5 minutes with no feedback
4. Tab names not self-explanatory → users learn by trial and error

Checklist

Post-Install Experience

• Add post-installation checklist to installer output (next steps)
• Consider auto-launching Dashboard after install with setup wizard
• Pre-populate server field with installation target server

CLI Installer

• Add interactive mode when no arguments provided (Q&A prompts)
• Show usage/help when args are invalid (not just "Invalid arguments")
• Add progress indicator for long operations
• Show exit codes in CLI output (currently only in README)
• Add --verbose flag for debugging

GUI Installer

• Auto-scroll log to show latest messages
• Highlight connection test result prominently (green pass / red fail)
• Add "Cancel Installation" button with confirmation
• Enable Troubleshoot button before install (pre-install diagnostics)

In-App Help

• Add tooltips on tab names: "Resource Metrics: CPU, I/O, memory pressure"
• Add collector descriptions in Lite Settings schedule grid
• Show data retention info: "Current database size: X MB"
• Add MCP tools list in Settings ("With MCP enabled, Claude Code can: ...")
• Add "Test MCP Server" button

Documentation

• Document minimum SQL Server permissions required (VIEW SERVER STATE)
• Document data retention policy in-app (not just README)
• Add "Getting Started" section in About dialog

Priority

Tier 3 - Medium

[erikdarlingdata]

Closed via PR #232 — added CLI --help flag and fixed Lite status bar text color. The remaining items from the original issue were triaged and intentionally deferred or rejected.