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fix(auq): spawned trigger is objective — explicit declaration or STATUS echo, never inference (periodic-lane AUQ collapse)

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The v1.76 spawned rule's parenthetical '(or your dispatch prompt marks this
session as spawned)' let the model INFER spawned status from a scripted-looking
prompt in a CI-looking session and silently auto-choose every review-phase
question: reviewCount=0 across the plan-review periodic E2Es (weekly run
33363624506, 9 of 14 failed shards; reproduced locally, zero AUQ fingerprints).
Env and hook paths were excluded by inspection: hermetic children echo
SESSION_KIND: interactive (CLAUDE_CODE_ENTRYPOINT=cli beats CI markers) and the
question-preference hook isn't installed there.

The trigger is now objective: the echoed SESSION_KIND: spawned STATUS line, or
an EXPLICIT dispatch-prompt declaration ("you are a SPAWNED subagent") —
declared, never inferred — with an absence-safe interactive fence: CI env vars,
scripted-looking or pasted prompts, and write-to-this-exact-file instructions
are NOT spawned markers. The prose channel stays because Task-tool subagents
inherit the parent env (no spawned prefix) — their dispatch prompt is the only
signal; #2733's env-prefix channel is untouched.

19 carve skeleton ceilings re-pinned with measured values (+~440 bytes/skill);
ship goldens refreshed for all three hosts; resolver pins extended with the
no-inference regression tests.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Garry Tan
2026-08-31 20:36:12 +00:00
co-authored by Claude Fable 5
parent e76f65a8da
commit 95d3aa17e9
47 changed files with 138 additions and 118 deletions
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test/helpers/carve-guards.ts
+19 -19
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@@ -150,7 +150,7 @@ export const CARVE_GUARDS: Record<string, CarveGuard> = {
},
behavioral: 'external',
externalTest: 'test/skill-e2e-ship-section-loading.test.ts',
maxSkeletonBytes: 76_800, // + v1.76 AUQ proactive SESSION_KIND=spawned rule (#2733); measured 76_375
maxSkeletonBytes: 77_650, // + v1.78 AUQ spawned-trigger objectivity (explicit declaration + interactive fence); measured 77_236
minUnionBytes: 181_000, // token-reduction Phases 1-2 (v1.69.x branch); measured union 201,464
mustContain: ['VERSION', 'CHANGELOG', 'review', 'merge', 'PR'],
// v1.58.5.0: pre-push-guard install (#2077) stacks on the shared first-run-guidance preamble.
@@ -181,7 +181,7 @@ export const CARVE_GUARDS: Record<string, CarveGuard> = {
// v1.65 merge: provisional larger-of-both-waves budget; re-measured below.
// Fork port wave 2 (#703): the repo-doc-preference block in the design
// check grew every plan-review skeleton ~0.7KB. Measured values noted.
maxSkeletonBytes: 75_450, // + v1.76 AUQ proactive SESSION_KIND=spawned rule (#2733); measured 75_029
maxSkeletonBytes: 76_300, // + v1.78 AUQ spawned-trigger objectivity (explicit declaration + interactive fence); measured 75_890
minUnionBytes: 123_600, // token-reduction Phases 1-2 (v1.69.x branch): preamble bash -> bin/gstack-skill-start, onboarding -> gated emission; measured union 137,346
mustContain: ['SCOPE EXPANSION', 'SELECTIVE EXPANSION', 'HOLD SCOPE', 'SCOPE REDUCTION'],
// Default-on Codex outside-voice (codexPreflight block + CODEX_MODE branch
@@ -207,7 +207,7 @@ export const CARVE_GUARDS: Record<string, CarveGuard> = {
// check grew every plan-review skeleton ~0.7KB. Measured values noted.
// #2499 project-scope MCP jq in the brain-sync block grew every tier-2+
// skeleton ~1.5KB (entry resolution emitted once per SKILL.md).
maxSkeletonBytes: 53_350, // + v1.76 AUQ proactive SESSION_KIND=spawned rule (#2733); measured 52_912
maxSkeletonBytes: 54_200, // + v1.78 AUQ spawned-trigger objectivity (explicit declaration + interactive fence); measured 53_773
minUnionBytes: 99_800, // token-reduction Phases 1-2 (v1.69.x branch); measured union 110,910
mustContain: ['Architecture', 'Code Quality', 'Test', 'Performance'],
// Cross-cutting preamble growth (v1.57.2.0 AUQ-failure prose fallback + the
@@ -240,7 +240,7 @@ export const CARVE_GUARDS: Record<string, CarveGuard> = {
// tier-2+ skeleton (measured 89,184). Main's v1.64.0.0 adds ~340 B more
// (telemetry --error-message/--failed-step preamble prose, PR #769).
// Budget covers the sum of both waves.
maxSkeletonBytes: 73_300, // + v1.76 AUQ proactive SESSION_KIND=spawned rule (#2733); measured 72_890
maxSkeletonBytes: 74_150, // + v1.78 AUQ spawned-trigger objectivity (explicit declaration + interactive fence); measured 73_751
minUnionBytes: 99_200, // token-reduction Phases 1-2 (v1.69.x branch); measured union 110,293
mustContain: ['design', 'visual'],
maxSizeRatio: 1.12, // D1 1.104 + main's ~0.008
@@ -264,7 +264,7 @@ export const CARVE_GUARDS: Record<string, CarveGuard> = {
// check grew every plan-review skeleton ~0.7KB. Measured values noted.
// #2499 project-scope MCP jq in the brain-sync block grew every tier-2+
// skeleton ~1.5KB (entry resolution emitted once per SKILL.md).
maxSkeletonBytes: 65_050, // + v1.76 AUQ proactive SESSION_KIND=spawned rule (#2733); measured 64_625
maxSkeletonBytes: 65_900, // + v1.78 AUQ spawned-trigger objectivity (explicit declaration + interactive fence); measured 65_486
minUnionBytes: 99_700, // token-reduction Phases 1-2 (v1.69.x branch); measured union 110,833
mustContain: ['developer experience', 'Getting Started'],
// Default-on Codex outside-voice (codexPreflight block + CODEX_MODE branch
@@ -295,7 +295,7 @@ export const CARVE_GUARDS: Record<string, CarveGuard> = {
// the #538 opt-out + D1 evidence directive — ratio 1.104 measured.
// #2499 project-scope MCP jq in the brain-sync block grew every tier-2+
// skeleton ~1.5KB (entry resolution emitted once per SKILL.md).
maxSkeletonBytes: 72_700, // + v1.76 AUQ proactive SESSION_KIND=spawned rule (#2733); measured 72_294
maxSkeletonBytes: 73_550, // + v1.78 AUQ spawned-trigger objectivity (explicit declaration + interactive fence); measured 73_155
minUnionBytes: 115_800, // Phase 4 wave 4; measured union 118,175
mustContain: ['design doc', 'problem statement'],
maxSizeRatio: 1.12,
@@ -316,7 +316,7 @@ export const CARVE_GUARDS: Record<string, CarveGuard> = {
// +Conductor AUQ-default-prose rule + one-way/continuation safety in the
// always-loaded AskUserQuestion Format section.
// v1.2.0 activation lift: first-run-guidance section in the shared preamble.
maxSkeletonBytes: 38_900, // + v1.76 AUQ proactive SESSION_KIND=spawned rule (#2733); measured 38_464
maxSkeletonBytes: 39_750, // + v1.78 AUQ spawned-trigger objectivity (explicit declaration + interactive fence); measured 39_325
minUnionBytes: 56_700, // token-reduction Phases 1-2 (v1.69.x branch): preamble bash -> bin/gstack-skill-start, onboarding -> gated emission; measured union 63,018
mustContain: ['CHANGELOG', 'Diataxis', 'coverage'],
// Two intentional additions stack on this small skill: the AUQ-failure prose
@@ -347,7 +347,7 @@ export const CARVE_GUARDS: Record<string, CarveGuard> = {
// v1.65 merge: provisional larger-of-both-waves budget; re-measured below.
// v1.64.1.0: shared-preamble prose from the two parallel v1.64 waves lands
// the skeleton at 69,022 B; +~1 KB headroom.
maxSkeletonBytes: 53_250, // + v1.76 AUQ proactive SESSION_KIND=spawned rule (#2733); measured 52_834
maxSkeletonBytes: 54_100, // + v1.78 AUQ spawned-trigger objectivity (explicit declaration + interactive fence); measured 53_695
minUnionBytes: 65_000, // token-reduction Phases 1-2 (v1.69.x branch): preamble bash -> bin/gstack-skill-start, onboarding -> gated emission; measured union 72,252
mustContain: ['Typography', 'Color', 'Aesthetic Direction'],
// Cross-cutting preamble growth (v1.57.2.0 AUQ-failure prose fallback ~2KB +
@@ -387,7 +387,7 @@ export const CARVE_GUARDS: Record<string, CarveGuard> = {
// +Conductor AUQ-default-prose rule + one-way/continuation safety in the
// always-loaded AskUserQuestion Format section.
// v1.2.0 activation lift: first-run-guidance section in the shared preamble.
maxSkeletonBytes: 58_200, // + v1.76 AUQ proactive SESSION_KIND=spawned rule (#2733); measured 57_784
maxSkeletonBytes: 59_050, // + v1.78 AUQ spawned-trigger objectivity (explicit declaration + interactive fence); measured 58_645
minUnionBytes: 64_200, // token-reduction Phases 1-2 (v1.69.x branch); measured union 71,379
mustContain: ['OWASP', 'STRIDE', 'daily', 'comprehensive', 'verif'],
// cso keeps its mode-dispatch + FP-filtering phases always-loaded, so the
@@ -424,7 +424,7 @@ export const CARVE_GUARDS: Record<string, CarveGuard> = {
gateAfterStop: undefined, // operational multi-STOP skill, like ship
},
behavioral: 'plan',
maxSkeletonBytes: 58_300, // + v1.76 AUQ proactive SESSION_KIND=spawned rule (#2733); measured 57_861
maxSkeletonBytes: 59_150, // + v1.78 AUQ spawned-trigger objectivity (explicit declaration + interactive fence); measured 58_722
minUnionBytes: 89_000, // Phase 4 wave 1; measured union 93,357
mustContain: ['confidence', 'P1', 'P2', 'Review Army', 'adversarial'],
},
@@ -451,7 +451,7 @@ export const CARVE_GUARDS: Record<string, CarveGuard> = {
gateAfterStop: 'EXIT PLAN MODE GATE',
},
behavioral: 'prompt',
maxSkeletonBytes: 58_400, // + v1.76 AUQ proactive SESSION_KIND=spawned rule (#2733); measured 58_006
maxSkeletonBytes: 59_300, // + v1.78 AUQ spawned-trigger objectivity (explicit declaration + interactive fence); measured 58_867
minUnionBytes: 83_400, // Phase 4 wave 1; measured union 84,304
mustContain: ['GATE: PASS', 'CROSS-MODEL ANALYSIS', 'codex exec resume', 'sandbox_mode="read-only"', 'mktemp'],
maxSizeRatio: 1.06, // measured 1.040 vs the v1.64.1.0 parity baseline
@@ -477,7 +477,7 @@ export const CARVE_GUARDS: Record<string, CarveGuard> = {
gateAfterStop: undefined, // operational skill
},
behavioral: 'prompt',
maxSkeletonBytes: 61_600, // + v1.76 AUQ proactive SESSION_KIND=spawned rule (#2733); measured 61_160
maxSkeletonBytes: 62_450, // + v1.78 AUQ spawned-trigger objectivity (explicit declaration + interactive fence); measured 62_021
minUnionBytes: 91_000, // Phase 4 wave 1; estimated union ~94.9KB
mustContain: ['readiness', 'merge', 'canary', 'revert', 'staging'],
},
@@ -512,7 +512,7 @@ export const CARVE_GUARDS: Record<string, CarveGuard> = {
},
behavioral: 'external',
externalTest: 'test/skill-e2e-autoplan-chain.test.ts', // phase-complete markers live ONLY in sections — its assertions ARE section-read proof
maxSkeletonBytes: 63_650, // + v1.76 AUQ proactive SESSION_KIND=spawned rule (#2733); measured 63_245
maxSkeletonBytes: 64_500, // + v1.78 AUQ spawned-trigger objectivity (explicit declaration + interactive fence); measured 64_106
minUnionBytes: 85_000, // measured union 86,926
mustContain: ['6 Decision Principles', 'TASTE DECISION', 'USER CHALLENGE', 'consensus', 'Restore Point'],
},
@@ -541,7 +541,7 @@ export const CARVE_GUARDS: Record<string, CarveGuard> = {
gateAfterStop: undefined,
},
behavioral: 'prompt',
maxSkeletonBytes: 56_250, // + v1.76 AUQ proactive SESSION_KIND=spawned rule (#2733); measured 55_836
maxSkeletonBytes: 57_100, // + v1.78 AUQ spawned-trigger objectivity (explicit declaration + interactive fence); measured 56_697
minUnionBytes: 64_500, // measured union 67,430
mustContain: ['HARD GATE', 'dedupe', 'quality gate', 'acceptance criteria', 'archive'],
},
@@ -570,7 +570,7 @@ export const CARVE_GUARDS: Record<string, CarveGuard> = {
gateAfterStop: undefined,
},
behavioral: 'prompt',
maxSkeletonBytes: 59_550, // + v1.76 AUQ proactive SESSION_KIND=spawned rule (#2733); measured 59_152
maxSkeletonBytes: 60_450, // + v1.78 AUQ spawned-trigger objectivity (explicit declaration + interactive fence); measured 60_013
minUnionBytes: 78_300, // measured union 79,139
mustContain: ['PGLite', 'Supabase', 'claude mcp add', 'read_secret_to_env', 'pooler'],
maxSizeRatio: 1.07, // measured 1.051 vs the branch monolith: index + stubs + 4 STOP pointers
@@ -605,7 +605,7 @@ export const CARVE_GUARDS: Record<string, CarveGuard> = {
gateAfterStop: undefined,
},
behavioral: 'prompt',
maxSkeletonBytes: 51_700, // + v1.76 AUQ proactive SESSION_KIND=spawned rule (#2733); measured 51_289
maxSkeletonBytes: 52_550, // + v1.78 AUQ spawned-trigger objectivity (explicit declaration + interactive fence); measured 52_150
minUnionBytes: 69_500, // measured union 70,385
mustContain: ['bug', 'browse', 'fix', 'Health Score Rubric', 'regression'],
},
@@ -642,7 +642,7 @@ export const CARVE_GUARDS: Record<string, CarveGuard> = {
gateAfterStop: undefined,
},
behavioral: 'prompt',
maxSkeletonBytes: 72_600, // + v1.76 AUQ proactive SESSION_KIND=spawned rule (#2733); measured 72_198
maxSkeletonBytes: 73_450, // + v1.78 AUQ spawned-trigger objectivity (explicit declaration + interactive fence); measured 73_059
minUnionBytes: 66_000, // measured union 73,496
mustContain: ['retrospective', '45-minute gap', 'Ship of the week', 'Praise'],
},
@@ -674,7 +674,7 @@ export const CARVE_GUARDS: Record<string, CarveGuard> = {
gateAfterStop: undefined, // operational skill, no plan-mode gate
},
behavioral: 'prompt',
maxSkeletonBytes: 52_050, // + v1.76 AUQ proactive SESSION_KIND=spawned rule (#2733); measured 51_631
maxSkeletonBytes: 52_900, // + v1.78 AUQ spawned-trigger objectivity (explicit declaration + interactive fence); measured 52_492
minUnionBytes: 57_500, // Phase 4 wave 4; measured union 58,682
mustContain: ["Don't make me think", "Users scan, they don't read", 'The Goodwill Reservoir', 'PRETEXT API CHEATSHEET', 'Pattern 3: Text around obstacles'],
},
@@ -701,7 +701,7 @@ export const CARVE_GUARDS: Record<string, CarveGuard> = {
gateAfterStop: undefined,
},
behavioral: 'prompt',
maxSkeletonBytes: 52_500, // + v1.76 AUQ proactive SESSION_KIND=spawned rule (#2733); measured 52_056
maxSkeletonBytes: 53_350, // + v1.78 AUQ spawned-trigger objectivity (explicit declaration + interactive fence); measured 52_917
minUnionBytes: 53_200, // Phase 4 wave 4; measured union 54,290
mustContain: ["Don't make me think", "Users scan, they don't read", 'trunk test', '44px minimum'],
},