feat(detector): Enhance port detection and service fingerprinting with improved HTTP/HTTPS and SSH checks, update test scripts for verbose output, and revise documentation with new hints and a detailed improvement plan.

readme.plan.md

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+# Detector Module Improvement Plan
+
+Command to reread CLAUDE.md: `cat ~/.claude/CLAUDE.md`
+
+## Current State
+- Only detects if ports are active/available
+- Has unimplemented `detectType()` method
+
+## Proposed Improvements
+
+### 1. Implement `detectType()` method
+- Detect service type running on port (HTTP, HTTPS, SSH, FTP, etc.)
+- Use protocol-specific handshakes without external services
+
+### 2. Add Network Interface Detection
+- List local network interfaces
+- Get IP addresses, MAC addresses
+- Detect network connectivity status
+
+### 3. Add Local DNS Capabilities
+- Resolve hostnames using local DNS
+- Check DNS configuration
+- Detect local DNS servers
+
+### 4. Add Protocol Detection
+- HTTP/HTTPS detection with TLS version
+- WebSocket support detection
+- TCP/UDP differentiation
+
+### 5. Add Network Diagnostics
+- Ping functionality (ICMP)
+- Traceroute capabilities
+- MTU discovery
+- Network latency measurement
+
+### 6. Add Service Fingerprinting
+- Identify common services by banner grabbing
+- Detect service versions locally
+- Support for common protocols (SSH, FTP, SMTP, etc.)
+
+### 7. Add Local Network Discovery
+- Discover devices on local network
+- ARP scanning for local subnet
+- mDNS/Bonjour service discovery
+
+### 8. Enhance API
+- Add batch checking for multiple URLs/ports
+- Add timeout configuration
+- Add detailed response objects with metadata
+
+## Implementation Priority
+1. ✅ Implement `detectType()` - COMPLETED
+2. ✅ Add protocol detection for HTTP/HTTPS - COMPLETED
+3. ✅ Add service fingerprinting - COMPLETED (basic version)
+4. ✅ Create enhanced API with IDetectorResult - COMPLETED
+5. Add network diagnostics - TODO
+6. Add local network discovery - TODO
+7. Add batch operations - TODO
+
+## What Was Implemented
+- ✅ `detectType()` method with protocol-specific detection
+- ✅ HTTP/HTTPS detection with proper protocol handling
+- ✅ SSH service detection via banner
+- ✅ Service fingerprinting for common protocols (FTP, SMTP, MySQL, etc.)
+- ✅ IDetectorResult interface for detailed responses
+- ✅ IDetectorOptions for configuration
+- ✅ Backward compatibility with `isActiveSimple()` method
+- ✅ Banner grabbing for unknown services
+- ✅ Tests for new functionality