chore: initial commit — unified project repo

Merged code repo (CompanionGuard-RL) into single project-level git.
Reorganized root: docs/, reference/, experiments/, tmp/active|archives/.
Gitignored: data/, checkpoints/, .venv, experiment logs, tmp/archives.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

code/configs/data_generation.yaml

@@ -0,0 +1,24 @@
+api:
+  type: "qwen"         # "qwen" or "openai"
+  model: "qwen-max"
+
+generation:
+  total_samples: 3000
+  safe_ratio: 0.25      # 25% safe (y_risk=0) samples
+  delay: 0.5            # seconds between API calls
+  max_retries: 3        # retry attempts per failed generation
+
+output:
+  raw_dir: "data/raw"
+  output_file: "data/raw/generated.jsonl"
+
+annotation:
+  judge_model: "qwen-max"
+  output_file: "data/processed/annotated.jsonl"
+  delay: 0.3
+
+split:
+  train: 0.8
+  val: 0.1
+  test: 0.1
+  seed: 42