feat(routing): W3 tier moves — validator-analyzer opus→sonnet, commit-changer propose=opus override (BDR-077)

validator-analyzer tiered down (deterministic validator-runner + fixed
deduction tables — no deep judgment; supersedes its BDR-076 opus pin).
commit-changer: MODE propose dispatched model="opus" (narrative
reconstruction + capitalize routing = judgment), MODE apply on the sonnet
pin. Typed-pin precedence smoke PASSED: sonnet-pinned verifier dispatched
model="haiku" ran on claude-haiku-4-5 — call-site wins, documented +
now behaviorally proven. Census §11 flip + §16 (106 pass), make test
exit 0.

agents/commit-changer.md

@@ -7,6 +7,11 @@ model: sonnet
 
 # Git Smart Commit
 
+> MODEL (BDR-077): `MODE: propose` is dispatched with `model="opus"` (the
+> call-site override — narrative reconstruction + capitalize routing are
+> judgment); `MODE: apply` runs on the sonnet frontmatter pin (mechanical
+> staging/committing of an approved plan).
+
 Reconstruct the development narrative from a working directory. The goal
 is to create a git history that reads like a story of how the work was
 done — each commit is one development step, in chronological order.