docs: Add comprehensive server implementation analysis

Complete gap analysis between APK requirements and current server:
- 58 endpoints already implemented (12 controllers)
- Identified critical missing endpoints (Synergy ID, config, save/load)
- Prioritized implementation roadmap (4 phases)
- Testing strategy and success criteria
- Immediate action items for Phase 1

Key findings:
- Server has good foundation with auth, assets, progression stubs
- Missing critical identity/save flow
- Need event system extraction from APK
- Modding system already complete (unique feature)

Next: Implement Synergy ID generation, config endpoint, save/load system

RR3CommunityServer/obj/Debug/net8.0/RR3CommunityServer.AssemblyInfo.cs

@@ -13,7 +13,7 @@ using System.Reflection;
 [assembly: System.Reflection.AssemblyCompanyAttribute("RR3CommunityServer")]
 [assembly: System.Reflection.AssemblyConfigurationAttribute("Debug")]
 [assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
-[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+7033a33795722d59916df3e48111b1140e9153df")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+ac897cd1e9516bfff7c70ab4e2b39a2cfcbecf73")]
 [assembly: System.Reflection.AssemblyProductAttribute("RR3CommunityServer")]
 [assembly: System.Reflection.AssemblyTitleAttribute("RR3CommunityServer")]
 [assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]

RR3CommunityServer/obj/Debug/net8.0/RR3CommunityServer.AssemblyInfoInputs.cache

@@ -1 +1 @@
-903732cc11e8077590223f25be77aa64d4512cbfb3cd029449c3cf21e3a7f6b3
+31559bf5ce7cdcd372f0b84358aabb338ec0e3580fe46eb91f589e374e96ec75

RR3CommunityServer/obj/Debug/net8.0/RR3CommunityServer.sourcelink.json

@@ -1 +1 @@
-{"documents":{"E:\\rr3\\RR3CommunityServer\\*":"https://raw.githubusercontent.com/ssfdre38/rr3-server/7033a33795722d59916df3e48111b1140e9153df/*"}}
+{"documents":{"E:\\rr3\\RR3CommunityServer\\*":"https://raw.githubusercontent.com/ssfdre38/rr3-server/ac897cd1e9516bfff7c70ab4e2b39a2cfcbecf73/*"}}