Round 2: fraud ring graph, AI-gen detector, provenance ledger, architecture doc

Tab 5 v2: smart targeting + bounding boxes + scorecard + heatmap overlays + adversarial canvas

Tab 5: Live Tamper Forge Studio + repair sample_data binaries

Fix st.image use_container_width for Streamlit 1.32

DocSentry - bank document forensics with 4 tabs