feat(05-01): OpenTAKServer selected for TAK server implementation

- Comprehensive research of TAK-compatible open-source implementations
- Comparison of FreeTAKServer, OpenTAKServer, and TAK Product Center Server
- Selected OpenTAKServer for feature richness and Docker deployment support
- Documented research findings and implementation plan

.planning/phases/05-tak-research/05-01-SUMMARY.md

@@ -0,0 +1,49 @@
+# Phase 5.1: TAK Server Research - Summary
+
+**OpenTAKServer (OTS) selected as optimal TAK-compatible solution with web interface, COT protocol support, geospatial mapping, and Docker deployment capabilities**
+
+## Performance
+
+- **Duration:** 10 min
+- **Started:** 2026-01-01T23:05:51Z
+- **Completed:** 2026-01-01T23:15:51Z
+- **Tasks:** 1 (research and evaluation)
+- **Files modified:** 1 (research report)
+
+## Accomplishments
+
+- Conducted comprehensive web research using DuckDuckGo
+- Identified and evaluated three TAK-compatible open-source implementations
+- Created detailed comparison matrix of FreeTAKServer, OpenTAKServer, and TAK Product Center Server
+- Selected OpenTAKServer as optimal solution based on feature completeness and deployment requirements
+- Documented research findings, selection rationale, and implementation plan
+
+## Files Created/Modified
+
+- `.planning/phases/05-tak-research/05-01-RESEARCH.md` - Comprehensive research report with comparison matrix and recommendation
+
+## Decisions Made
+
+- Selected OpenTAKServer (OTS) as primary implementation
+- Rationale: Most feature-rich with web UI, video streaming, advanced authentication, and easy Docker deployment
+- Alternative considered: FreeTAKServer (strong runner-up with excellent community support)
+- Rejected: TAK Product Center Server (lacks web interface, complex deployment, DoD-focused)
+
+## Deviations from Plan
+
+None - plan executed exactly as written
+
+## Issues Encountered
+
+None
+
+## Next Phase Readiness
+
+- Research complete and documented
+- OpenTAKServer selected as optimal solution
+- Ready to proceed to Phase 6 implementation
+- All requirements met: open-source, web interface, COT protocol, geospatial mapping, Docker support
+
+---
+*Phase: 05-tak-research*
+*Completed: 2026-01-01*