✨[Feat] Sprint 4 JPEG Cleaner and Verification - #5

Summary

• adds deterministic JPEG Privacy Clean for complete EXIF, standard/extended XMP, Photoshop/IPTC, and COM segments
• reconstructs output from checked retained ranges with one allocation
• preserves ICC, JFIF/JFXX, Adobe APP14, unknown APP segments, structural markers, scan bytes, ordering, and trailing data by default
• implements structured JPEG verification for observable absent/present expectations
• rejects structurally incomplete JPEGs without partial output
• removes bounded EXIF safely even when its TIFF payload is malformed
• shares parse-limit validation between inspection and cleaning
• replaces two obsolete stub assertions with one canonical integration fixture and targeted boundary cases

Validation

• format: pass
• lint: pass
• typecheck: pass
• tests: 17 files, 164 tests, pass (1.31 s)
• build: pass
• package dry run: 35,393 bytes packed / 159,788 bytes unpacked
• npm audit: 0 vulnerabilities
• runtime dependencies: 0
• development dependencies: 8

Scope

PNG and WebP cleaning and verification remain unsupported with typed errors. No runtime dependencies were added.