docs(reference): record long user-play study

docs/README.md

@@ -9,7 +9,7 @@ authority after the direction is approved.
 - [`product/GAME_PRODUCT_CONTRACT.md`](product/GAME_PRODUCT_CONTRACT.md):
   audience, fantasy, play loop, duration, modes, onboarding, completion
 - [`product/SYSTEMS_AND_BATTLE.md`](product/SYSTEMS_AND_BATTLE.md): deterministic
-  battle, six-person formation, Directives, damage, professions and failure
+  battle, Party-line rules, Directives, damage, professions and failure
 - [`product/ECONOMY_AND_BALANCE.md`](product/ECONOMY_AND_BALANCE.md): progression,
   prices, pacing profiles, difficulty and solvency
 - [`product/SAVE_AND_FAILURE_CONTRACT.md`](product/SAVE_AND_FAILURE_CONTRACT.md):
@@ -17,20 +17,26 @@ authority after the direction is approved.
 
 ## Complete Content
 
-- [`content/CHARACTER_BIBLE.md`](content/CHARACTER_BIBLE.md): 30 named characters
-- [`content/PROFESSION_AND_SKILL_MATRIX.md`](content/PROFESSION_AND_SKILL_MATRIX.md):
-  12 base and 24 advanced professions
-- [`content/ENEMY_BESTIARY.md`](content/ENEMY_BESTIARY.md): 100 enemy identities
+- [`content/CONTENT_INDEX.md`](content/CONTENT_INDEX.md): content namespaces,
+  exact counts and cross-catalog authority
+- [`content/RECRUIT_GENERATION.md`](content/RECRUIT_GENERATION.md): generated
+  run-bound Recruit identity, offer and determinism rules
+- [`content/PROFESSION_CATALOG.md`](content/PROFESSION_CATALOG.md): 12 base,
+  24 advanced and 6 hidden professions
+- [`content/TRAIT_CATALOG.md`](content/TRAIT_CATALOG.md): 36 mechanical
+  benefit-and-cost traits
+- [`content/ENEMY_CATALOG.md`](content/ENEMY_CATALOG.md): 100 ordinary/elite
+  enemies and 16 bosses
 - [`content/EQUIPMENT_CATALOG.md`](content/EQUIPMENT_CATALOG.md): 320 items
-- [`content/CAMPAIGN_AND_CHAPTERS.md`](content/CAMPAIGN_AND_CHAPTERS.md): eight
-  chapters, ending and postgame
-- [`content/ACHIEVEMENTS_AND_COLLECTIONS.md`](content/ACHIEVEMENTS_AND_COLLECTIONS.md):
-  48 achievements and 20 collections
+- [`content/ARTIFACT_CATALOG.md`](content/ARTIFACT_CATALOG.md): 60 run-wide
+  Artifacts
+- [`content/REGION_CATALOG.md`](content/REGION_CATALOG.md): eight Regions,
+  bosses, pressures and route roles
 
 ## Presentation And Production
 
 - [`presentation/SCREEN_AND_STATE_MAP.md`](presentation/SCREEN_AND_STATE_MAP.md):
-  82 player-facing pages and required states
+  50 player-facing pages and required states
 - [`presentation/UI_AND_VISUAL_SYSTEM.md`](presentation/UI_AND_VISUAL_SYSTEM.md):
   landscape layout, interaction, accessibility and localization
 - [`presentation/ART_ASSET_AND_ANIMATION_CATALOG.md`](presentation/ART_ASSET_AND_ANIMATION_CATALOG.md):
@@ -45,8 +51,10 @@ authority after the direction is approved.
 - [`prototype/generation/README.md`](prototype/generation/README.md): four concept
   image calls and their provenance
 - [`reference/REFERENCE_RUNTIME_CENSUS.md`](reference/REFERENCE_RUNTIME_CENSUS.md)
-  and [`reference/TRANSFERABLE_STRUCTURE_LESSONS.md`](reference/TRANSFERABLE_STRUCTURE_LESSONS.md):
-  evidence-labeled reference research and originality boundary
+  [`reference/TRANSFERABLE_STRUCTURE_LESSONS.md`](reference/TRANSFERABLE_STRUCTURE_LESSONS.md),
+  and [`reference/USER_PLAY_VIDEO_STUDY_2026-08-11.md`](reference/USER_PLAY_VIDEO_STUDY_2026-08-11.md):
+  evidence-labeled reference research, the current long-session study, and the
+  originality boundary
 - [`reviews/PRE_DEVELOPMENT_READINESS_AUDIT.md`](reviews/PRE_DEVELOPMENT_READINESS_AUDIT.md):
   verified completion and open human/runtime gates