feat(matrix): add Stats Bot and Project Doc Bot services

Complete GDPR-compliant bot suite for Matrix:

matrix-stats-bot (port 3312):
- Analytics reports from Umami
- Commands: !stats, !today, !week, !realtime, !users
- Scheduled daily/weekly reports to Matrix room

matrix-project-doc-bot (port 3313):
- Project documentation with photos, voice, text
- Voice transcription via OpenAI Whisper
- Blog generation with 5 styles (casual, technical, tutorial, social, story)
- Commands: !new, !projects, !switch, !status, !generate, !export
- Uses PostgreSQL + S3 (MinIO) for storage

Changes:
- docker-compose.macmini.yml: Added both Matrix bots
- health-check.sh: Added health checks for both bots

Environment variables required:
- MATRIX_STATS_BOT_TOKEN, MATRIX_PROJECT_DOC_BOT_TOKEN
- OPENAI_API_KEY (for Project Doc Bot)

https://claude.ai/code/session_01E3r5aFW3YLAhEJfsL2ryhv

services/matrix-stats-bot/src/users/users.module.ts

@@ -0,0 +1,8 @@
+import { Module } from '@nestjs/common';
+import { UsersService } from './users.service';
+
+@Module({
+	providers: [UsersService],
+	exports: [UsersService],
+})
+export class UsersModule {}

services/matrix-stats-bot/src/users/users.service.ts

@@ -0,0 +1,55 @@
+import { Injectable, Logger, OnModuleInit } from '@nestjs/common';
+import { ConfigService } from '@nestjs/config';
+import postgres from 'postgres';
+
+interface UserStats {
+	total: number;
+	verified: number;
+	lastWeek: number;
+	lastMonth: number;
+}
+
+@Injectable()
+export class UsersService implements OnModuleInit {
+	private readonly logger = new Logger(UsersService.name);
+	private sql: postgres.Sql | null = null;
+
+	constructor(private configService: ConfigService) {}
+
+	async onModuleInit() {
+		const databaseUrl = this.configService.get<string>('database.url');
+		if (databaseUrl) {
+			try {
+				this.sql = postgres(databaseUrl);
+				this.logger.log('Database connected for user stats');
+			} catch (error) {
+				this.logger.warn('Failed to connect to database:', error);
+			}
+		} else {
+			this.logger.warn('DATABASE_URL not configured - user stats disabled');
+		}
+	}
+
+	async getUserStats(): Promise<UserStats | null> {
+		if (!this.sql) {
+			return null;
+		}
+
+		try {
+			const [totalResult] = await this.sql`SELECT COUNT(*) as count FROM "user"`;
+			const [verifiedResult] = await this.sql`SELECT COUNT(*) as count FROM "user" WHERE "emailVerified" = true`;
+			const [weekResult] = await this.sql`SELECT COUNT(*) as count FROM "user" WHERE "createdAt" > NOW() - INTERVAL '7 days'`;
+			const [monthResult] = await this.sql`SELECT COUNT(*) as count FROM "user" WHERE "createdAt" > NOW() - INTERVAL '30 days'`;
+
+			return {
+				total: parseInt(totalResult.count, 10),
+				verified: parseInt(verifiedResult.count, 10),
+				lastWeek: parseInt(weekResult.count, 10),
+				lastMonth: parseInt(monthResult.count, 10),
+			};
+		} catch (error) {
+			this.logger.error('Failed to get user stats:', error);
+			return null;
+		}
+	}
+}