chore: auto-commit before merge (loop merry-robin)

Refactor loop and chat services to use repositories

Add repository parity contract tests

Route migrations by database dialect

Implement repository bundle service integration

Split backend schema by dialect

Add shared repository contracts

Add dual-mode database provider

Add runtime mode resolver

docs: create roadmap (7 phases)

docs: define v1 requirements

docs: complete project research

chore: add project config

docs: initialize project

docs: map existing codebase