feat(packages): add @manacore/bot-services shared package

Introduces a new shared package containing transport-agnostic business
logic services for Matrix bots and the Gateway. This enables:

- Individual bots to import shared services
- A unified Gateway bot to combine all features
- Code reuse without duplication

Services included:
- TodoService: Task management with projects, priorities, dates
- CalendarService: Events, calendars, reminders
- AiService: Ollama LLM integration, chat sessions, vision
- ClockService: Timers, alarms, world clocks (API client)
- Placeholder modules for Nutrition, Quotes, Stats, Docs

Key features:
- Pluggable storage providers (file-based, in-memory, custom)
- German natural language input parsing
- NestJS module system with dependency injection
- Fully testable in isolation

https://claude.ai/code/session_015bwcqVRiFmSydYTjvDJGTc

packages/bot-services/src/docs/index.ts

@@ -0,0 +1,25 @@
+// Placeholder - to be implemented
+// Will integrate with project documentation generation
+
+export interface DocsServiceConfig {
+	openaiApiKey?: string;
+	s3Config?: {
+		endpoint: string;
+		bucket: string;
+		accessKey: string;
+		secretKey: string;
+	};
+}
+
+export interface ProjectDoc {
+	id: string;
+	title: string;
+	content: string;
+	format: 'blog' | 'summary' | 'technical';
+	createdAt: string;
+}
+
+// Export placeholder module
+export const DocsModule = {
+	register: () => ({ module: class {}, providers: [], exports: [] }),
+};