v2.21.0

• Host patterns support
• Wildcard blocks like Host *.example.com and Host 10.30.0.* now appear in a dedicated Patterns group at the bottom of the host list
• Add, edit, clone and delete pattern blocks directly from the TUI (A to add a new pattern)
• Full SSH glob matching engine: *, ?, [charset], [!charset]/[^charset], ranges, !negation and multi-pattern (space-separated)
• Detail panel shows inherited directives from matching patterns for each host. Pattern detail view lists all matching hosts
• Patterns included in search, tag filtering (tag: fuzzy and tag= exact) and tag picker
• Context-aware footer: pattern-specific actions shown when a pattern is selected
• Dynamic column widths in key list and key picker overlay. Columns now adapt to content width instead of using fixed sizes