placement/tests: add gen_oid command; simplify gen_layout/diff_layout; add class= support#17623

Draft

Copilot wants to merge 18 commits intomasterfrom

copilot/add-interactive-placement-debug-tool

Commits on Mar 1, 2026

Initial plan
Copilot
committed
Add pl_debug interactive placement debugging tool

Copilot
and
gnailzenh
committed
Add mode= option to gen_layout command in pl_debug

Copilot
and
gnailzenh
committed
Add ver= option to gen_layout command in pl_debug

Copilot
and
gnailzenh
committed
Rename opc1/opc2 to opc/opc_second and add PLD_NO_OPC sentinel in pl_debug

Copilot
and
gnailzenh
committed
Add query command to print node/rank/target status in pl_debug

Copilot
and
gnailzenh
committed
Fix duplicate srv_pool_map.c compilation in placement tests SConscript

Copilot
and
gnailzenh
committed
placement/tests: fix srv_pool_map.os duplicate-environment SCons conflict

Copilot
and
gnailzenh
committed
placement/tests: add --help long option to pl_debug

Copilot
and
gnailzenh
committed
placement/tests: fix rank domain status not updated after set_down/set_downout

Copilot
and
gnailzenh
committed
placement/tests: gen_layout error when class unset; add print_obj_class command

Copilot
and
gnailzenh
committed
placement/tests: print_obj_class mandatory hint (EC/RP/shard/all)

Copilot
and
gnailzenh
committed
placement/tests: gen_layout type= and grp= options to override obj_class

Copilot
and
gnailzenh
committed