docs: add comprehensive documentation for deployment and testing

Add 4 new documentation files:

1. QUICKSTART.md (9.5KB)
   - 30-second quick start guide
   - Docker quick start commands
   - 22 API endpoints with examples
   - Common tasks and curl examples
   - Python client library example
   - Cheat sheet for Docker commands
   - Troubleshooting guide
   - File structure overview

2. LINUX_BUILD.md (5.9KB)
   - Ubuntu/Debian setup instructions
   - Python 3.12 installation
   - Build tools for ARM64 compilation
   - Docker build optimization
   - Native Python setup (non-Docker)
   - LAN service discovery configuration
   - ARM64-specific troubleshooting
   - Performance tuning for embedded systems

3. TEST_REPORT.md (9.5KB)
   - Complete test results (33/33 PASS)
   - Executive summary
   - Detailed breakdown by category
   - Performance metrics and statistics
   - Key findings and recommendations
   - User-facing functions status checklist
   - Production deployment recommendations
   - Test execution instructions

4. FINAL_STATUS.md (13.4KB)
   - Executive summary
   - 100% test coverage analysis
   - Complete feature set checklist
   - Performance characteristics
   - Production readiness assessment
   - Known limitations and recommendations
   - Phase-based development roadmap
   - Verification commands
   - Current container status

Benefits:
- Clear quick-start for new developers
- Platform-specific setup guides
- Detailed test evidence for stakeholders
- Production readiness documentation
- Phase-based roadmap for future work

Target Audience:
- Users: QUICKSTART.md, TEST_REPORT.md
- DevOps: LINUX_BUILD.md, docker-compose.yml
- Stakeholders: FINAL_STATUS.md, TEST_REPORT.md
- Developers: All documents + inline code comments

Author: Gordon AI