Add Docker sandbox execution layer for isolated agent tasks

Complete Phase 0 and prepare for Phase 1

Replace propose/confirm chat flow with immediate task creation via queued job

Add claude_code harness via Agent SDK and simplify runtime selection

Add live-updating task dashboard with detail panel and fix process log task association

Implementation of Research agent with synthetic.new integration

fix coordinator tests

expand coordinator foundation

Complete Phase 0 implementation with database schema, agent architecture, and core services

Replace welcome page with coordinator interaction interface

Complete foundation setup with strict code quality tools and Pest testing framework

Initial commit: Clawra Foundation (Phase 0) implementation