[AUTO-ARCH-1] Add critical missing architectural sections to specification:
- Layered Architecture: 4-layer model (Presentation/Application/Domain/
Infrastructure) with A2A as the sole layer boundary, per ADR-001
- Module Definitions: boundaries, responsibilities, and public interfaces
for 9 core modules (Plan Lifecycle, Actor Runtime, ACMS, A2A Protocol,
Resource System, Tool & Skill System, LSP Integration, TUI, Server)
- Server and Client Architecture (Module View): local mode (A2aLocalFacade)
vs server mode (HTTP), A2A extension methods catalog, Agent Card
- Cross-Cutting Concerns: error handling, logging/observability,
configuration, dependency injection, storage and persistence
- Milestone Plan (Module Coverage): v3.0.0-v3.9.0 mapped to architectural
components with current completion status
All content derived from existing ADRs (ADR-001 through ADR-048).
No existing content modified -- additions only.
HAL9000
9048e5b7a2