feat(architecture): implement phase 1 command mapping seam

[Lythaeon]

Summary

• Implements Phase 1 of the hexagonal migration plan by introducing typed domain/application command seams.
• Moves CLI-to-core translation into an anti-corruption mapper while keeping legacy runtime APIs in place for safe incremental migration.

Changes

• Added src/domain/run.rs with RunConfig, ProtocolKind, LoadMode, and Scenario.
• Added src/application/commands.rs with per-mode command types (Local, Replay, Service, Controller, Agent).
• Added src/adapters/cli/mapper.rs to map TesterArgs into typed commands.
• Updated entry planning/execution to consume typed commands:
  • src/entry/plan/types.rs
  • src/entry/plan/build.rs
  • src/entry/plan/execute.rs
• Registered new modules in src/main.rs.
• Updated Phase 1 tracking artifacts in:
  • docs/architecture/ard/ARCHITECTURE_RISKS_HEXAGONAL_PLAN.md

Checks

• cargo make format
• cargo make clippy
• cargo make test
• cargo make architecture-check
• cargo make test-wasm (not applicable)
• cargo make audit (not applicable)
• cargo make deny (not applicable)