feat: initial commit of Claude Code configuration

Add comprehensive Claude Code setup including:
- Custom coding rules (Go, Git, Testing, Security, Patterns)
- 24 installed plugins (Voltagent, Workflows, Skills)
- Cross-platform installers (bash, PowerShell)
- Complete documentation

This configuration provides the same powerful development
environment across any Claude Code installation.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

rules/hooks.md

@@ -0,0 +1,11 @@
+# Go Hooks
+
+> This file extends [common/hooks.md](../common/hooks.md) with Go specific content.
+
+## PostToolUse Hooks
+
+Configure in `~/.claude/settings.json`:
+
+- **gofmt/goimports**: Auto-format `.go` files after edit
+- **go vet**: Run static analysis after editing `.go` files
+- **staticcheck**: Run extended static checks on modified packages