Plan to rewrite L1-L16 canonical chain references in 4 live normative
docs (routing-off-phase, router-procedure, PSR_v1 R15.2, Pravila §17.7)
from prescriptive ('invoke the chain', 'should be used') to advisory
('reference material, not expectation', 'available as hint').
Infrastructure tools/observer-chain-* (map + detector + retrofill + C6
controller + matrix.chain_ref + discipline step 4) NOT touched — it is
harmless and does not penalize chain skips.
Channel chain:<L#> in Pravila §17.7 retained as one of 6 coverage channels
with explicit 'conscious choice, not obligation' note.
Per AskUserQuestion 2026-05-26: user chose option C ("remove chains from
normative as expectation").
Дмитрий
1bf7f9305a