KOS_OP_VAR_FORMAT_CONST

• Style: EXTRA (VAR, CONST). Row = obj name (pool), rules string (pool).

• Stack: [...] -> [..., str]. Fused VAR + OBJECT_FORMAT_CONST: resolve the name in the current frame’s namespace and push PyObject_Format(obj, rules).

• Compiler form: Produced by ByteCodeProcessor.fuse_feeders when OBJECT_FORMAT_CONST is fed by a bare VAR load. Lowers to FAST_FORMAT_CONST through the generic schema-driven convert_fast path.

• Implementation: koskari/lib/opcode/VAR_FORMAT_CONST.c