feat(mcp): defer thread organization safely#8683

fix(orchestration): protect deferred organization lifecycle

fix(orchestration): preserve v2 thread deletion planning

fix(orchestration): retry deferred apply reads before receipts

fix(orchestration): retry deferred projection reads

fix(orchestration): preserve recovery interruption

test(orchestration): provide replay recovery dependencies

fix(orchestration): harden deferred organization recovery

fix(orchestration): clean up deferred terminal state

test(mcp): cover deferred organization recovery

feat(mcp): defer thread organization safely