v2.2.0-pre1

What's New

NIF Sprite Rendering

New sprite-gen CLI command for rendering 3D item models from BSA archives into PNG sprites.

• Extracts NIF meshes from BSA, converts Xbox 360 big-endian to little-endian, and renders textured sprites
• DDS texture decoding with automatic BSA texture resolution
• Gore cap filtering (BSDismemberSkinInstance body part ranges 100-299)
• Isometric view mode (--iso) for body armor and larger items
• Fixed endian bulk-swap bug that cross-contaminated multi-byte sub-fields in 4-byte structs (BodyPartList, HalfTexCoord, HavokFilter)

NPC Head Rendering

New render npc command for generating NPC head sprites with full FaceGen support.

• Base head mesh loading from RACE records via BSA
• FaceGen NIF override (per-NPC mesh from FaceGen directory)
• EGM mesh morphs: 50 symmetric + 30 asymmetric morph targets applied via FGGS/FGGA coefficients
• EGT texture morphs: 256x256 RGB deltas upscaled with bilinear interpolation to DDS resolution
• Hair, eyes, and head parts (eyebrows, beards) from HAIR/EYES/HDPT records
• NPC appearance resolution merging NPC_ and RACE coefficients

Unified CLI Commands

New format-agnostic commands that auto-detect file type (ESM, DMP, ESP):

• search text/hex — text or hex byte pattern search across any binary file
• stats — categorized record type statistics
• list — browse reconstructed records with type and filter options
• show — inspect record detail by FormID or EditorID
• diff — compare records between any two files

Code Quality

• Massive refactoring: 5 batches of file splitting enforcing ~500-line limit across ~50 files
• New unit tests for extracted helper classes (EsmEditorIdValidator, RecordValidator, SemdiffRecordParser)
• Test suite refactored with shared helpers and ~35 parameterized theories
• All SonarQube and Roslyn analyzer warnings resolved (~336 warnings)
• CLI commands migrated from EsmAnalyzer to main project

Full Changelog: v2.1.0-pre.1...v2.2.0-pre1