Merge branch 'v2.4.4-dev' into v2.4.4

Merge checksum verification updates with platform-specific binary detection.

Resolved conflicts:
- install/installCyberPanel.py: Combined detectBinarySuffix() with SHA256 checksums
- plogical/upgrade.py: Combined detectBinarySuffix() with SHA256 checksums

Changes:
- Keep comprehensive detectBinarySuffix() OS detection from v2.4.4
- Add SHA256 checksum verification from v2.4.4-dev
- Use BINARY_CONFIGS dictionary with platform-specific checksums
- Fixed rhel9 binary URL (was -rhel, now correctly -rhel9)

Binary checksums (OpenLiteSpeed v1.8.4.1 - Module v2.0.4):
- All platforms binary: a6e07671ee1c9bcc7f2d12de9e95139315cf288709fb23bf431eb417299ad4e9
- RHEL 8 module: 1cc71f54d8ae5937d0bd2b2dd27678b47f09f4f7afed2583bbd3493ddd05877f
- RHEL 9 module: 127227db81bcbebf80b225fc747b69cfcd4ad2f01cea486aa02d5c9ba6c18109
- Ubuntu module: d070952fcfe27fac2f2c95db9ae31252071bade2cdcff19cf3b3f7812fa9413a

Author: usmannasir

.gitignore

@@ -117,4 +117,8 @@ dmypy.json
 /usr/local/CyberCP/
 /etc/cyberpanel/
 cyberpanel_password.txt
-mysql_password.txt
+mysql_password.txt
+
+# Documentation files (local reference only)
+CHANGES_SUMMARY.md
+RESOURCE_LIMITS_IMPLEMENTATION.md