Create SynthData0523 metadata and provenance index

SynthData0523/INDEX.md

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+# SynthData0523 Index Summary
+
+## Main
+
+- Unique files: `21474`
+- Unique runs: `656`
+- Datasets: `49`
+- Models: `12`
+
+### Duplicate-source run groups in `main/`
+
+- `5090-Success`: `5` runs
+- `5090-Success|syntheticSuccess`: `3` runs
+- `syntheticSuccess`: `490` runs
+- `syntheticSuccess|timecost`: `100` runs
+- `timecost`: `58` runs
+
+## Hyper Parameter Tuning
+
+- Files: `3220`
+- Runs under `runs/`: `96`
+- Datasets: `1`
+- Models: `4`
+
+## Dataset Coverage
+
+### main/
+- `c10`: `442` files
+- `c11`: `266` files
+- `c12`: `186` files
+- `c13`: `551` files
+- `c14`: `535` files
+- `c15`: `507` files
+- `c16`: `401` files
+- `c17`: `418` files
+- `c18`: `276` files
+- `c19`: `416` files
+- `c2`: `1347` files
+- `c20`: `288` files
+- `c3`: `265` files
+- `c4`: `272` files
+- `c5`: `265` files
+- `c6`: `980` files
+- `c7`: `466` files
+- `c8`: `264` files
+- `c9`: `244` files
+- `m1`: `262` files
+- `m10`: `262` files
+- `m11`: `398` files
+- `m12`: `286` files
+- `m2`: `302` files
+- `m4`: `1178` files
+- `m5`: `373` files
+- `m6`: `426` files
+- `m7`: `315` files
+- `m8`: `707` files
+- `m9`: `394` files
+- `n1`: `449` files
+- `n10`: `296` files
+- `n11`: `730` files
+- `n12`: `361` files
+- `n14`: `380` files
+- `n15`: `487` files
+- `n16`: `482` files
+- `n17`: `366` files
+- `n18`: `362` files
+- `n19`: `488` files
+- `n2`: `295` files
+- `n20`: `219` files
+- `n3`: `1179` files
+- `n4`: `300` files
+- `n5`: `297` files
+- `n6`: `484` files
+- `n7`: `364` files
+- `n8`: `347` files
+- `n9`: `296` files
+
+### hyper_parameter_tuning/
+- `n11`: `3220` files

SynthData0523/README.md

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+# SynthData0523
+
+`SynthData0523` is a copied, reorganized view of valid synthetic generation assets as of 2026-05-23.
+
+## Structure
+
+```text
+SynthData0523/
+  README.md
+  INDEX.csv
+  INDEX.md
+  main/
+    <dataset_id>/
+      <model_id>/
+        <run_id>/
+  hyper_parameter_tuning/
+    <dataset_id>/
+      <model_id>/
+        _rf_tuning/
+        runs/
+          <run_id>/
+```
+
+## Included Sources
+
+- `main/` is built from `syntheticSuccess/`, `timecost/`, and `5090-Success/`.
+- `hyper_parameter_tuning/` is copied from `Hyper ParameterTuning/` while preserving both `runs/` and `_rf_tuning/`.
+- Original source directories are intentionally preserved and are not deleted.
+
+## Provenance Rules
+
+- When the same run already exists in multiple source roots, `SynthData0523/main/` keeps one copied target path and records all source roots in `INDEX.csv`.
+- Preferred copy source precedence for duplicate main assets is:
+  1. `syntheticSuccess`
+  2. `timecost`
+  3. `5090-Success`
+- `INDEX.csv` records file-level provenance for every copied file.
+
+## Current Snapshot
+
+- `main/` unique files: `21474`
+- `main/` unique runs: `656`
+- `main/` datasets: `49`
+- `main/` models: `12`
+- `hyper_parameter_tuning/` files: `3220`
+- `hyper_parameter_tuning/` runs: `96`
+
+## Notes
+
+- `INDEX.md` provides a compact summary.
+- `INDEX.csv` is the canonical machine-readable provenance index.