Fix SQLITE_BUSY error and upload status tracking

switch to modernc.org/sqlite - pure Go, no CGO needed for multi-arch Docker

Add multi-arch Docker build with cross-compilation

Refactor obfuscation to use gox.Obfuscator

Fix Docker build: enable CGO and upgrade go-sqlite3

Add -report flag for HTML report generation

UX improvements: search placeholder, COLLSCAN filter, Stats JSON toggle

Improve query pattern, fix bugs, enhance Search UX

Add -server flag, JSON toggle for logs, fix Stats duplicates

Store raw JSON log instead of legacy format, highlight durationMillis

Enhance Audit page layout and add title headers to all pages

Add sequential number column to hatcheted logs table for easier demo reference

Add directory processing, content-based log validation, and test fixes

fix: generate unique hatchet name for each file when processing multiple files

feat: add upload file validation