v0.7.0: Phase 8 — Developer Experience, Debugging & Multimodal

What's New

Tensor Debugger (M45)

• Binary trace recording (124-byte fixed-size entries) with per-op stats (min/max/mean/std)
• NaN/Inf sentinel detection with automatic halt
• Compile-time NaN risk analysis (log/sqrt/div patterns)
• Trace diffing for non-determinism diagnosis
• Chrome tracing export
• @no_trace and @trace_breakpoint decorators

Reproducibility Mode (M46)

• --deterministic flag with compile-time non-determinism detection
• 4 non-determinism categories: GPU atomics (auto-fixed), algorithm selection (auto-fixed), implicit RNG (error), external (warning)
• Deterministic kernel variant selection (sort-based reduction, fixed cuBLAS)
• RNG seed tracking (ExplicitSeed/Derived/Implicit)
• Graph hash computation for checkpoint fingerprinting

Multimodal Primitives (M48)

• PatchEmbed config with compile-time validation (image_size % patch_size)
• MelSpectrogram with compile-time mel filterbank (hz-to-mel triangular filters)
• CrossAttention config with Q/K dim matching and head divisibility
• Modality classification heuristic (Vision/Audio/Text by rank+dtype)
• @multimodal decorator validation
• 7 preprocessing FFI stubs (patch_embed, mel, cross_attention, resize, normalize, stft, resample)

Stats

• 678 unit tests passing
• Clippy clean

Full Changelog: v0.5.0...v0.7.0