fix: Wire real data sources across players, analytics, status, and maps services

- players: Primary data from player_sessions (online status, playtime aggregates);
  ban/unban status overlaid from player_actions latest action per steam_id.
  Register PlayerSession entity in PlayersModule. Extend NATS forwarding to
  include 'unban' alongside kick and ban.
- analytics: Fix retention period boundary bug — sessions were queried with only
  a lower-bound filter (MoreThan), causing all future cycles to bleed into earlier
  wipe windows. Replaced with Between(wipeDate, endDate) for correct isolation.
- status: Replace hardcoded player_count=0/max_players=0 with live data from
  most-recent server_stats row per license. Register ServerStats entity in
  StatusModule. Falls back to 0 gracefully when no stats exist yet.
- maps: File buffer was computed and discarded — never written to disk.
  Now writes to /app/map_data/{licenseId}/{timestamp}_{filename} (tenant-isolated,
  docker volume map_data). Creates directories with mkdirSync(recursive:true).
  Logs success/failure via NestJS Logger. Throws 500 on disk write failure
  instead of silently losing data.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend-nest/src/modules/analytics/analytics.service.ts

@@ -1,6 +1,6 @@
 import { Injectable } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
-import { Repository, MoreThan } from 'typeorm';
+import { Repository, MoreThan, Between } from 'typeorm';
 import { ServerStatsHourly } from '../../entities/server-stats-hourly.entity';
 import { ServerStats } from '../../entities/server-stats.entity';
 import { WipeHistory } from '../../entities/wipe-history.entity';
@@ -169,13 +169,18 @@ export class AnalyticsService {
     const retentionData = await Promise.all(
       recentWipes.map(async (wipe) => {
         const wipeDate = wipe.started_at;
-        const nextWipe = recentWipes.find(w => w.started_at && wipeDate && w.started_at > wipeDate);
+        // Find the next wipe chronologically after this one (wipes are DESC ordered)
+        const nextWipe = recentWipes
+          .slice()
+          .reverse()
+          .find(w => w.started_at && wipeDate && w.started_at > wipeDate);
         const endDate = nextWipe?.started_at || new Date();
 
+        // Query sessions strictly within this wipe cycle: [wipeDate, endDate)
         const sessionsInPeriod = await this.playerSessionRepo.find({
           where: {
             license_id: licenseId,
-            session_start: MoreThan(wipeDate!),
+            session_start: Between(wipeDate!, endDate),
           },
         });
 
@@ -183,6 +188,7 @@ export class AnalyticsService {
 
         return {
           wipe_date: wipeDate,
+          end_date: endDate,
           unique_players: uniquePlayers,
           total_sessions: sessionsInPeriod.length,
         };