feat(scanner): add AGT agent-listing always-loaded budget finding (v5.9 B1)

New AGT scanner flags the aggregate always-loaded cost of the agent listing
(every active agent's name+description is injected each turn so the model
knows what it can delegate to). Mirrors the SKL skill-listing pattern but
encodes the key honesty caveat: the agent-listing mechanism is INFERRED
(agents are absent from Claude Code's documented context breakdown), so the
token figure is an UPPER-BOUND estimate and the aggregate budget is a
config-audit heuristic anchored on 200k — not a CC-documented allotment.

- scanners/agent-listing-scanner.mjs + scanners/lib/agent-listing-budget.mjs
- 8 TDD tests (tests/scanners/agent-listing-scanner.test.mjs)
- AGT folds into the Token Efficiency health area (scoring.mjs)
- byte-stability: AGT added to strip-added-scanner (frozen v5.0.0 baselines
  left untouched, same as OST/OPT); SC-5 default-output snapshot refreshed
- suite 1168 -> 1176 green

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Kjell Tore Guttormsen 2026-06-23 15:02:59 +02:00
commit fcfb2979ef
9 changed files with 399 additions and 13 deletions

View file

@ -29,6 +29,7 @@ import { scan as scanCachePrefix } from './cache-prefix-scanner.mjs';
import { scan as scanDisabledInSchema } from './disabled-in-schema-scanner.mjs';
import { scan as scanCollision } from './collision-scanner.mjs';
import { scan as scanSkillListing } from './skill-listing-scanner.mjs';
import { scan as scanAgentListing } from './agent-listing-scanner.mjs';
import { scan as scanOutputStyle } from './output-style-scanner.mjs';
import { scan as scanOptimizationLens } from './optimization-lens-scanner.mjs';
@ -66,6 +67,7 @@ const SCANNERS = [
{ name: 'DIS', fn: scanDisabledInSchema, label: 'Disabled-In-Schema' },
{ name: 'COL', fn: scanCollision, label: 'Plugin Skill Collision' },
{ name: 'SKL', fn: scanSkillListing, label: 'Skill-Listing Budget' },
{ name: 'AGT', fn: scanAgentListing, label: 'Agent-Listing Budget' },
{ name: 'OST', fn: scanOutputStyle, label: 'Output-Style Validation' },
{ name: 'OPT', fn: scanOptimizationLens, label: 'Optimization Lens' },
];