docs: define llm and actor input/output interfaces

[Myriad-Dreamin]

This PR adds the concept of the EverMemoryArchive.

• UI is the user interface. Users can interacts with ema using WebUI, NapCatQQ, or TUI.
• Ema Actor is the actor that takes user inputs and generates outputs.
  • Visit an actor instance using ActorClient.
• LLM is the LLM that is responsible for the generation of the response.
  • Visit llm providers using EmaLLMClient.
  • Create a stateful agent by extending Agent.
  • Run a task with AgentScheduler by providing AgentTask.
• Storage is the storage that is responsible for the storage of the data.

[Copilot]

Pull request overview

This PR establishes the foundational architecture for EverMemoryArchive by defining core interface contracts. It introduces a conceptual module that documents how different system components (UI, Actor, LLM, Storage) interact through well-defined TypeScript interfaces.

Key changes:

• Introduces interface definitions for Actor client, LLM client, and storage components in a new concept module
• Adds type-checking utilities for compile-time interface validation
• Updates documentation generation to include the new concept module and adds Mermaid diagram rendering support

Reviewed changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
scripts/docs.js	Refactored to include the new concept module in documentation generation
packages/ema/src/types.ts	Added type-checking utilities for interface validation
packages/ema/src/concept/storage.ts	Defined interfaces for actor state storage and memory management
packages/ema/src/concept/llm.ts	Defined interface for LLM client interactions
packages/ema/src/concept/index.ts	Module entry point with architecture documentation and Mermaid diagram
packages/ema/src/concept/actor.ts	Defined Actor client interface with event-based communication
packages/ema/src/actor.ts	Updated import to use new concept module location
docs/.vitepress/config.js	Added Mermaid.js integration for rendering diagrams in documentation

[Copilot]

Pull request overview

Copilot reviewed 7 out of 8 changed files in this pull request and generated 10 comments.