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>

旧方向信息/configs/noise_configs.yaml

@@ -0,0 +1,121 @@
+# Multimodal noise configuration for robustness experiments (P0-4)
+# Each variant defines noise applied per modality.
+# Run: python scripts/preprocess/generate_noise.py \
+#        --config configs/noise_configs.yaml \
+#        --data_dir $ZSY/multimodal_affect/data/iemocap
+
+variants:
+
+  # ── Variant 1: Light Gaussian across all modalities ───────────────────
+  - name: gaussian_light
+    description: "Mild Gaussian noise on all modalities (σ=0.05)"
+    noise:
+      text:
+        type: gaussian
+        intensity: 0.05
+      audio:
+        type: gaussian
+        intensity: 0.05
+      visual:
+        type: gaussian
+        intensity: 0.05
+
+  # ── Variant 2: Heavy Gaussian ─────────────────────────────────────────
+  - name: gaussian_heavy
+    description: "Strong Gaussian noise on all modalities (σ=0.20)"
+    noise:
+      text:
+        type: gaussian
+        intensity: 0.20
+      audio:
+        type: gaussian
+        intensity: 0.20
+      visual:
+        type: gaussian
+        intensity: 0.20
+
+  # ── Variant 3: Missing modality – audio dropped ───────────────────────
+  - name: missing_audio
+    description: "Audio features zeroed out (100% drop)"
+    noise:
+      text:
+        type: gaussian
+        intensity: 0.0
+      audio:
+        type: masking
+        intensity: 1.0        # mask ALL dims
+      visual:
+        type: gaussian
+        intensity: 0.0
+
+  # ── Variant 4: Missing modality – visual dropped ──────────────────────
+  - name: missing_visual
+    description: "Visual features zeroed out"
+    noise:
+      text:
+        type: gaussian
+        intensity: 0.0
+      audio:
+        type: gaussian
+        intensity: 0.0
+      visual:
+        type: missing_modality
+        intensity: 1.0
+
+  # ── Variant 5: Text word-drop ─────────────────────────────────────────
+  - name: text_word_drop_30
+    description: "30% token dropout in text modality"
+    noise:
+      text:
+        type: word_drop
+        intensity: 0.30
+      audio:
+        type: gaussian
+        intensity: 0.0
+      visual:
+        type: gaussian
+        intensity: 0.0
+
+  # ── Variant 6: Audio feature masking ─────────────────────────────────
+  - name: audio_masking_50
+    description: "50% of audio feature dimensions masked"
+    noise:
+      text:
+        type: gaussian
+        intensity: 0.0
+      audio:
+        type: masking
+        intensity: 0.50
+      visual:
+        type: gaussian
+        intensity: 0.0
+
+  # ── Variant 7: Realistic mixed noise ─────────────────────────────────
+  - name: realistic_mixed
+    description: >
+      Realistic scenario: moderate text corruption, noisy audio,
+      partial visual occlusion
+    noise:
+      text:
+        type: word_drop
+        intensity: 0.15
+      audio:
+        type: gaussian
+        intensity: 0.10
+      visual:
+        type: occlusion
+        intensity: 0.25
+
+  # ── Variant 8: Asynchronous noise (time-shifted audio) ───────────────
+  - name: audio_time_mask
+    description: "Audio time-step masking (30%) simulates dropped frames"
+    noise:
+      text:
+        type: gaussian
+        intensity: 0.0
+      audio:
+        type: time_mask
+        intensity: 0.30
+      visual:
+        type: gaussian
+        intensity: 0.0