feat(scanners): model/effort routing becomes a lever, not a 25th dimension (C4)

New GAP finding CA-GAP-028: authored subagents exist and not one of them names
`model:` or `effort:`, so every delegated task runs on the main conversation's
model (`model` defaults to `inherit`). Cites BP-MODEL-001/002, landed in C1.
`whats-active` and `manifest` now carry `model`/`effort` per agent.

Shipped as a conditional LEVER rather than a 25th dimension, and the choice was
made by measurement: as a t3 dimension the agent-less marketplace-medium fixture
would count it vacuously-present, moving the denominators 41->42 and utilization
44->45 — which flips `segment` "Developing"->"Competent" in the frozen v5.0.0
posture baseline, a field strip-retired-gap.mjs does not mask. A lever never
enters those denominators. The general rule is now an invariant in CLAUDE.md.

One check across both axes, not one per axis: it fires only when neither is used
anywhere, so a deliberate everything-on-one-model policy stays silent. Cost is
recall, chosen for precision.

Found by dogfooding, fixed red-first: `model: inherit` is the documented default
spelled out, so it must not count as routing — otherwise a config opts out of the
opportunity without changing anything real.

Two pre-existing defects surfaced and closed on the way:
- The humanizer guard asserted TRANSLATIONS.GAP.static EQUALS the dimension
  titles, which forbade humanizing any lever — all three existing levers fell
  through to the generic "feature opportunity" default, wrong for a budget lever.
  Guard now requires coverage of every emittable title, seen red against those
  three before the entries were written.
- Two hand-written copies of the lever list (finding-codes guard, humanizer
  guard) merged into one exported LEVERS registry carrying code AND title.
- suppression-validation pinned CA-GAP-028 as an unoccupied number; C4 claimed
  it. Fixed structurally with a derived first-free id, not by picking a new
  literal — same class as #60's "bump this again".

Suite 1596/0. Frozen v5.0.0 snapshots untouched.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Pq3nye21RVYk4pZLeT8pGz

commands/manifest.md

@@ -73,6 +73,7 @@ Use the Read tool on `/tmp/config-audit-manifest.json`. Extract `meta.repoPath`,
 | ... | ... | ... | ... | ... | ... |
 
 _Load column: **always** / **on-demand** / **external**. Append `°` when `derivationConfidence` is `inferred` (no primary-doc row pins it exactly)._
+_Agent rows carry `model` and `effort`. When either is set, append it to the name — `` `reviewer` (haiku/low) `` — using `inherit` / `default` for the unset side. Leave the suffix off entirely when both are null; a row of "inherit/default" on every agent is noise, and `/config-audit feature-gap` is where that becomes a finding._
 _Estimates assume ~4 chars/token (Claude ballpark). Real token count varies ±15%._
 ```
 

commands/whats-active.md

@@ -94,7 +94,17 @@ Render as markdown:
 |-------|--------|--------|
 | {name} | {source}{if pluginName: ` (${pluginName})`} | ~{estimatedTokens} |
 
-### MCP Servers ({mcpServers.length}, ~{mcpServers subtotal} tokens)
+### Agents ({agents.length}, ~{agents subtotal} tokens)
+
+| Agent | Source | Model | Effort | Tokens |
+|-------|--------|-------|--------|--------|
+| {name} | {source}{if pluginName: ` (${pluginName})`} | {model or "inherit"} | {effort or "session default"} | ~{estimatedTokens} |
+
+Skip this section entirely when `agents` is empty. `model: null` is rendered as
+*inherit* and `effort: null` as *session default* — both are the documented
+defaults, so a blank cell would read as missing data rather than as the choice
+it is. If no agent pins either column, say so in one sentence: every delegated
+task then costs what the session costs.
 
 | Server | Source | Status | Command |
 |--------|--------|--------|---------|