Add README to every folder — guided tour for reviewers

Each folder now explains what's inside, why it matters,
and what to look at first. Teacher-friendly navigation.

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

training_data/README.md

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+# Training Data — QLoRA Fine-Tuning Datasets
+
+30 files containing the training datasets used across the CyberRanger version lineage.
+
+## What's Here
+
+- **22 JSON files** — Version-specific training data (V6–V22), each containing paired attack/refusal examples
+- **1 JSONL file** — Caring awareness training data
+- **7 Markdown files** — Training strategy documents (Seven Pillars, Caring Patterns, System Prompt additions)
+
+## Training Data Evolution
+
+| Version Range | Dataset Size | Key Change |
+|---------------|-------------|------------|
+| V6–V9 | ~500 pairs | Early identity training |
+| V10–V15 | ~1,000 pairs | Bicameral/hive/fractal architectures |
+| V16–V19 | ~2,000 pairs | Nervous system + sentinel training |
+| V20–V22 | ~5,000 pairs | Complete mind + refined responses |
+
+The V42 Gold training dataset (~10,000 pairs with Claude Haiku gold-standard refusals) is published on HuggingFace, not stored here.