fix(cli): allow subcommand options to override global options

[dsylla]

Summary

• Fixes bug where subcommand --format option was being validated against global option choices
• Example: claude-flow process monitor failed with "Invalid value for --format: text. Must be one of: dashboard, compact, json"

Root Cause

The parser applied global option defaults (--format defaulting to 'text') before command resolution. When validating, the subcommand's --format choices (['dashboard', 'compact', 'json']) were checked against the global default value ('text'), causing validation to fail.

Changes

1. parser.ts: Defer applyDefaults() - no longer called during parse(), moved to CLI after command resolution
2. parser.ts: Updated applyDefaults() to accept command parameter and skip global defaults when command defines same option
3. parser.ts: Updated validateFlags() to filter out global options when command overrides them
4. index.ts: Call applyDefaults(flags, targetCommand) after subcommand resolution

Test Plan

• claude-flow process monitor now works (uses dashboard format by default)
• claude-flow process monitor --format json works
• claude-flow process monitor --format compact works
• claude-flow --version still works
• Other commands unaffected

🤖 Generated with claude-flow