fix: stabilize proposal consensus and architecture gating in self-loop

fix: prevent self-loop policy drift via auto-merge scope guard

fix: enforce hard architecture audit defaults at config and startup

feat: enforce issue-contract consensus across proposal and review

feat: make author proposal mode more open for evolution levels >=1

fix: enforce hard architecture gate by default and surface consensus stalls

fix: make evo2/3 architecture audit warn by default and record self-loop run

fix: align round semantics and improve reviewer plain-language output

test: align shell argv assertion with cross-platform py mapping

fix: make default test/lint commands cross-platform

fix: harden start concurrency and command/sandbox failure handling

docs: refresh public project description copy

feat: land integrated memory system and runtime controls

docs: simplify README latest updates into daily summaries

refactor: split service orchestration helpers and sync docs