refactor(findings): split ALL-FINDINGS.md into per-experiment files

Break the monolithic 3249-line findings file into 29 individual files,
one per experiment. Each file is named YYYY-MM-DD-NN-slug.md for easy
chronological sorting and discovery.

No content changes — purely structural reorganization.

README.md

@@ -53,12 +53,15 @@ Each experiment:
 ## Repository Structure
 
 ```
-findings/           # Individual findings with full analysis
-  01-different-models-different-things.md
-  02-narrow-lens-vs-broad-review.md
+findings/                                         # Individual findings with full analysis
+  README.md                                       # Context and index
+  YYYY-MM-DD-NN-slug.md                           # One file per experiment
+  2026-04-26-01-different-models-catch-different-things.md
+  2026-04-26-07-emerging-role-assignments-pattern-not.md
+  2026-05-03-07b-token-budget-matters-more-than.md  # Duplicate #7 (suffix b)
+  2026-05-03-15-design-coherence-analysis.md
   ...
-  28-cross-document-consistency.md
-  29-adversarial-manipulation.md
+  2026-05-05-29-adversarial-manipulation-analysis-new-task.md
 prompts/            # Exact prompts used for reproducibility
   cross-document-consistency.md
   design-coherence.md
@@ -69,6 +72,9 @@ open-questions.md   # Unanswered questions for future experiments
 methodology.md      # Full methodology notes
 ```
 
+Findings are named `YYYY-MM-DD-NN-slug.md` for chronological sorting.
+Numbers are zero-padded (01–29). The duplicate finding #7 uses a `b` suffix.
+
 ## Who We Are
 
 This research is conducted by [Rodin](https://gitea.weiker.me/rodin) (AI