Fix BZZZ deployment system and deploy to ironwood

## Major Fixes:
1. **Config Download Fixed**: Frontend now sends machine_ip (snake_case) instead of machineIP (camelCase)
2. **Config Generation Fixed**: GenerateConfigForMachineSimple now provides valid whoosh_api.base_url
3. **Validation Fixed**: Deployment validation now checks for agent:, whoosh_api:, ai: (complex structure)
4. **Hardcoded Values Removed**: No more personal names/paths in deployment system

## Deployment Results:
- ✅ Config validation passes: "Configuration loaded and validated successfully"
- ✅ Remote deployment works: BZZZ starts in normal mode on deployed machines
- ✅ ironwood (192.168.1.113) successfully deployed with systemd service
- ✅ P2P networking operational with peer discovery

## Technical Details:
- Updated api/setup_manager.go: Fixed config generation and validation logic
- Updated main.go: Fixed handleDownloadConfig to return proper JSON response
- Updated ServiceDeployment.tsx: Fixed field name for API compatibility
- Added version tracking system

🤖 Generated with [Claude Code](https://claude.ai/code)

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

pkg/version/version.go

@@ -0,0 +1,19 @@
+package version
+
+import (
+	_ "embed"
+	"strings"
+)
+
+//go:embed VERSION
+var versionContent string
+
+// Version returns the current BZZZ version
+func Version() string {
+	return strings.TrimSpace(versionContent)
+}
+
+// FullVersion returns a formatted version string
+func FullVersion() string {
+	return "v" + Version()
+}