feat(model-router): wave 2-B — orchestrators declare phases, shifters and pins removed, frontmatter = off-state floor

The 15 Skill(effort-*) citers now call mcp__model-router__route per phase
(orchestrate at a dispatch span, reflect/plan for the skill's own level,
apply at the bookkeeping tail, escalate at the verify-secure caps); built-in
judgment dispatches carry an explicit effort= param. lib/effort-shift.md is
the route doctrine, lib/model-gate.md the mod rule (route answer = witness,
/route on as remedy). Deleted: skills/effort-*, lib/effort-pins.txt/.sh,
lib/model-check.sh, their tests, the installers' re-apply blocks. The mod
drops its Skill(effort-*) bridge. The tracked model:/effort: frontmatter
stays as the off-state floor, census-locked equal to the rows
(lib/tests/effort-routing.test.sh rewritten, 140 checks; analyzer → xhigh).

Contract .claude/tasks/contracts/2026-10-10-model-router-w2b-1045.md, plan
r4 § W2-B: GATE 0 MET, verifier ECARTS(7) then CONFORME 10/10, security
PASS, full make test green (design-tool-gate env red only).

agents/geo-analyzer.md

@@ -104,7 +104,7 @@ Mirror of seo-analyzer's pipeline contract. Parse the MODE line:
   to the run-scoped, gitignored `.audit/geo-signals-<RUNID>.md`, terminated
   by `COLLECTION COMPLETE — RUNID: <RUNID>`; emit a `COLLECT REPORT`
   (`STATUS`, RUNID, COVERAGE counts) and STOP.
-- **`MODE: judge`** — opus frontmatter pin. Fail-closed load of
+- **`MODE: judge`** — opus row (frontmatter = off-state floor). Fail-closed load of
   `.audit/geo-signals-<RUNID>.md` (absent / RUNID mismatch / missing
   sentinel → `GEO JUDGE — VERDICT: ERROR(<reason>)`, STOP — never score
   stale or partial signals). Then STEP 6-12 (schema, entity — including