clay: fix OPSEC + challenge schema compliance

1. Remove $250B+ from collective brain claim evidence section —
   replaced with structural description per OPSEC policy
2. Align challenge frontmatter with schemas/challenge.md:
   target → target_claim, strength → confidence: experimental,
   add challenge_type: boundary

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

domains/entertainment/challenge-three-body-oligopoly-understates-original-ip-viability-in-prestige-adaptation-category.md

@@ -1,10 +1,11 @@
 ---
 type: challenge
-target: "legacy media is consolidating into three surviving entities because the Warner-Paramount merger eliminates the fourth independent major and forecloses alternative industry structures"
+challenge_type: boundary
+target_claim: "legacy media is consolidating into three surviving entities because the Warner-Paramount merger eliminates the fourth independent major and forecloses alternative industry structures"
 domain: entertainment
 description: "The three-body oligopoly thesis implies franchise IP dominates creative strategy, but the largest non-franchise opening of 2026 suggests prestige adaptations remain viable tentpole investments"
 status: accepted
-strength: moderate
+confidence: experimental
 source: "Clay — analysis of Project Hail Mary theatrical performance vs consolidation thesis predictions"
 created: 2026-04-01
 resolved: 2026-04-03

domains/entertainment/studio-consolidation-shrinks-the-cultural-collective-brain-while-creator-economy-expansion-grows-it-predicting-accelerating-innovation-asymmetry.md

@@ -28,7 +28,7 @@ This is already visible: MrBeast's format innovations (philanthropy-as-entertain
 ## Evidence
 - Henrich (2015): Collective brain theory — population size and interconnectedness predict innovation rate; isolated populations lose complexity
 - Studio consolidation: 6 majors → 3 survivors (2020-2026), each merger reducing independent creative decision nodes
-- Creator economy: $250B+ market growing 25%/yr, millions of independent creative nodes
+- Creator economy: a market growing at 25%/yr with millions of independent creative nodes
 - Format innovation originating from creator networks: MrBeast (philanthropy-entertainment), Claynosaurz (community-owned IP), arscontexta (human-AI content pairs)
 - Information cascades: Platform-mediated copying and recombination between creator nodes is faster than studio development cycles