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-project-doc-bot/src/database/database.module.ts

@@ -0,0 +1,33 @@
+import { Module, Global, Logger } from '@nestjs/common';
+import { ConfigService } from '@nestjs/config';
+import { drizzle } from 'drizzle-orm/postgres-js';
+import postgres from 'postgres';
+import * as schema from './schema';
+
+export const DATABASE_CONNECTION = 'DATABASE_CONNECTION';
+
+@Global()
+@Module({
+	providers: [
+		{
+			provide: DATABASE_CONNECTION,
+			useFactory: (configService: ConfigService) => {
+				const logger = new Logger('Database');
+				const url = configService.get<string>('database.url');
+
+				if (!url) {
+					logger.error('DATABASE_URL is required');
+					throw new Error('DATABASE_URL is required');
+				}
+
+				const client = postgres(url);
+				logger.log('Database connected');
+
+				return drizzle(client, { schema });
+			},
+			inject: [ConfigService],
+		},
+	],
+	exports: [DATABASE_CONNECTION],
+})
+export class DatabaseModule {}

services/matrix-project-doc-bot/src/database/schema.ts

@@ -0,0 +1,33 @@
+import { pgTable, text, timestamp, uuid, integer } from 'drizzle-orm/pg-core';
+
+export const projects = pgTable('projects', {
+	id: uuid('id').primaryKey().defaultRandom(),
+	matrixUserId: text('matrix_user_id').notNull(),
+	name: text('name').notNull(),
+	status: text('status').notNull().default('active'), // active, archived
+	createdAt: timestamp('created_at').notNull().defaultNow(),
+	updatedAt: timestamp('updated_at').notNull().defaultNow(),
+});
+
+export const projectItems = pgTable('project_items', {
+	id: uuid('id').primaryKey().defaultRandom(),
+	projectId: uuid('project_id')
+		.notNull()
+		.references(() => projects.id, { onDelete: 'cascade' }),
+	type: text('type').notNull(), // photo, voice, text
+	content: text('content'), // text content or transcription
+	mediaUrl: text('media_url'), // S3 URL for media
+	mediaMxcUrl: text('media_mxc_url'), // Matrix MXC URL
+	duration: integer('duration'), // Voice duration in seconds
+	createdAt: timestamp('created_at').notNull().defaultNow(),
+});
+
+export const generations = pgTable('generations', {
+	id: uuid('id').primaryKey().defaultRandom(),
+	projectId: uuid('project_id')
+		.notNull()
+		.references(() => projects.id, { onDelete: 'cascade' }),
+	style: text('style').notNull(),
+	content: text('content').notNull(),
+	createdAt: timestamp('created_at').notNull().defaultNow(),
+});