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

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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
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2
tests/snapshots/default-output/posture.json
View file

@ -1,4 +1,4 @@
{
"kind": "text",
"payload": "`[CML] CLAUDE.md Linter`: 1 finding(s) (0ms)\n `[SET] Settings Validator`: 0 finding(s) (0ms)\n `[HKV] Hook Validator`: 0 finding(s) (0ms)\n `[RUL] Rules Validator`: 0 finding(s) (0ms)\n `[MCP] MCP Config Validator`: 0 finding(s) (0ms)\n `[IMP] Import Resolver`: 0 finding(s) (0ms)\n `[CNF] Conflict Detector`: 0 finding(s) (0ms)\n `[GAP] Feature Gap Scanner`: 17 finding(s) (0ms)\n `[TOK] Token Hotspots`: 1 finding(s) (0ms)\n `[CPS] Cache-Prefix Stability`: 0 finding(s) (0ms)\n `[DIS] Disabled-In-Schema`: 0 finding(s) (0ms)\n `[COL] Plugin Skill Collision`: 0 finding(s) (0ms)\n `[SKL] Skill-Listing Budget`: 0 finding(s) (0ms)\n `[OST] Output-Style Validation`: 0 finding(s) (0ms)\n `[OPT] Optimization Lens`: 0 finding(s) (0ms)\n\n━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n Configuration health\n━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n\n Health: A (98/100) — Healthy setup, only minor polish needed\n 9 areas reviewed\n\n Area scores\n ───────────\n `CLAUDE.md` ........... A (90) `Settings` ............ A (100)\n `Hooks` ............... A (100) `Rules` ............... A (100)\n `MCP` ................. A (100) `Imports` ............. A (100)\n `Conflicts` ........... A (100) `Token Efficiency` .... A (90)\n `Plugin Hygiene` ...... A (100)\n\n 17 ways you could get more out of Claude Code — see /config-audit feature-gap\n\n━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
"payload": "`[CML] CLAUDE.md Linter`: 1 finding(s) (0ms)\n `[SET] Settings Validator`: 0 finding(s) (0ms)\n `[HKV] Hook Validator`: 0 finding(s) (0ms)\n `[RUL] Rules Validator`: 0 finding(s) (0ms)\n `[MCP] MCP Config Validator`: 0 finding(s) (0ms)\n `[IMP] Import Resolver`: 0 finding(s) (0ms)\n `[CNF] Conflict Detector`: 0 finding(s) (0ms)\n `[GAP] Feature Gap Scanner`: 17 finding(s) (0ms)\n `[TOK] Token Hotspots`: 1 finding(s) (0ms)\n `[CPS] Cache-Prefix Stability`: 0 finding(s) (0ms)\n `[DIS] Disabled-In-Schema`: 0 finding(s) (0ms)\n `[COL] Plugin Skill Collision`: 0 finding(s) (0ms)\n `[SKL] Skill-Listing Budget`: 0 finding(s) (0ms)\n `[AGT] Agent-Listing Budget`: 0 finding(s) (0ms)\n `[OST] Output-Style Validation`: 0 finding(s) (0ms)\n `[OPT] Optimization Lens`: 0 finding(s) (0ms)\n\n━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n Configuration health\n━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n\n Health: A (98/100) — Healthy setup, only minor polish needed\n 9 areas reviewed\n\n Area scores\n ───────────\n `CLAUDE.md` ........... A (90) `Settings` ............ A (100)\n `Hooks` ............... A (100) `Rules` ............... A (100)\n `MCP` ................. A (100) `Imports` ............. A (100)\n `Conflicts` ........... A (100) `Token Efficiency` .... A (90)\n `Plugin Hygiene` ...... A (100)\n\n 17 ways you could get more out of Claude Code — see /config-audit feature-gap\n\n━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
}

16
tests/snapshots/default-output/scan-orchestrator.json
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@ -569,6 +569,20 @@
"info": 0
}
},
{
"scanner": "AGT",
"status": "ok",
"files_scanned": 0,
"duration_ms": 0,
"findings": [],
"counts": {
"critical": 0,
"high": 0,
"medium": 0,
"low": 0,
"info": 0
}
},
{
"scanner": "OST",
"status": "ok",
@ -610,7 +624,7 @@
"risk_score": 11,
"risk_band": "Medium",
"verdict": "PASS",
"scanners_ok": 14,
"scanners_ok": 15,
"scanners_error": 0,
"scanners_skipped": 1
}