Add Unraid diagnostics parser and fix zip upload support

Implements comprehensive parser for Unraid diagnostics archives with support for:
- System information (OS version, BIOS, motherboard)
- CPU details from lscpu (model, cores, threads, frequency)
- Memory information
- Storage devices with SMART data integration
- Temperature sensors from disk array
- System event logs

Parser intelligently merges data from multiple sources:
- SMART files provide detailed disk information (model, S/N, firmware)
- vars.txt provides disk configuration and filesystem types
- Deduplication ensures clean results

Also fixes critical bug where zip archives could not be uploaded via web interface
due to missing extractZipFromReader implementation.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

internal/parser/vendors/vendors.go

@@ -8,6 +8,7 @@ import (
 	_ "git.mchus.pro/mchus/logpile/internal/parser/vendors/nvidia"
 	_ "git.mchus.pro/mchus/logpile/internal/parser/vendors/nvidia_bug_report"
 	_ "git.mchus.pro/mchus/logpile/internal/parser/vendors/supermicro"
+	_ "git.mchus.pro/mchus/logpile/internal/parser/vendors/unraid"
 	_ "git.mchus.pro/mchus/logpile/internal/parser/vendors/xigmanas"
 
 	// Generic fallback parser (must be last for lowest priority)