chore(tests): commit validation dataset and baseline reports into repo

Move the HF model list from ~/Documents/ into tests/enrich_hf_validation/test_data/
and commit the pipeline validation baseline artifacts (report.json,
preprocessing_audit.json, README snapshots) into baselines/.

Update config.py and run_validation.py defaults to use repo-relative paths
via os.path.dirname(__file__) instead of ~/Documents/ hardcode.

Originates from changes in 8fb00998 (validation pipeline audit).

tests/enrich_hf_validation/baselines/readmes/hr16__Miwano-Rag-LoRA.md

@@ -0,0 +1,19 @@
+---
+license: creativeml-openrail-m
+datasets:
+- hr16/Miwano-Rag
+language:
+- en
+pipeline_tag: text-to-image
+tags:
+- stable-diffusion
+- safetensors
+- LoRA
+- Low-rank Adaptation
+- anime
+---
+The files in this model repo are LoRA embeddings created using [Kanianime](https://huggingface.co/Rasgeath/self_made_sauce/blob/main/Kani-anime-pruned.ckpt) by [Rasgeath](https://huggingface.co/Rasgeath) as base model. 
+
+Use something like `masterpiece, best quality, 1girl, art by Miwano-Rag` as prompt. 
+
+I'm too lazy to write a README lol.