V2.2.0 - Security hardening, performance optimizations, and GUI improvements

Security

• SSH Password Exposure - Switched all sshpass -p calls to sshpass -e (environment variable)
  • Passwords no longer visible in ps aux process listing
  • Applied to all 4 sites in SSH.sh (__wait_for_ssh__, __ssh_exec__, __scp_send__, __scp_fetch__)
  • SSHPASS environment variable is unset immediately after each command
• Container Password Exposure - Changed __ct_change_password__ to pipe credentials via stdin
  • Previously embedded password in bash -c command string (visible in /proc)
  • Now pipes directly to pct exec -- chpasswd
• Guacamole Token Security - Token file now created with restricted permissions
  • Directory created with mkdir -p -m 700, token file set to chmod 600
  • Prevents other system users from reading authentication tokens
• Guacamole API Credentials - Switched to --data-urlencode for curl authentication
  • Prevents special characters in passwords (e.g., &, =) from breaking API calls
• Eval Removal - Replaced eval with safer alternatives across 10 sites in 6 files
  • Command execution contexts now use bash -c instead of eval "$cmd"
  • ArgumentParser.sh uses declare -g instead of eval for variable assignment
• ArgumentParser Blocklist - Extended reserved variable name list
  • Added high-risk names (HOSTNAME, RANDOM, SECONDS, GROUPS, etc.) to prevent overwrites

Fixed

• Filename Typo - Renamed EnableCPUScalingGoverner.sh to EnableCPUScalingGovernor.sh
  • Updated all references in CHANGELOG.md, .docs/TODO.md, and internal SCRIPT_NAME
• CreateFromISO Structure - Moved set -euo pipefail after header comment block
  • Added shellcheck source directive for sourced utility files
• RemoveStorage Race Condition - Cached VM/CT config per iteration
  • Added || continue to skip VMs/CTs deleted between list and config check
• Locale-Dependent Parsing - Fixed AWK decimal parsing in CreateFromISO.sh
  • Added LC_NUMERIC=C and comma-to-dot conversion for European locale compatibility
• GUI Unicode Symbols - Replaced all Unicode checkmarks/crosses with plain text

Changed

• GUI Breadcrumb Navigation - Path display now shows cc_pve > Storage > Ceph style
• GUI Script Descriptions - Menu listings show inline description extracted from script headers
• GUI Log Level Hint - "Type 'l' to change log level" only shown in remote execution mode
• SSH Error Context - Connection failures now display the SSH error reason at all 7 failure sites
• SSH Keepalive - Added ServerAliveInterval=5 and ServerAliveCountMax=3 to SSH and SCP
• Multi-Node Recovery - Execution summary now lists per-node results with retry option
  • Shows OK: node1 node2 and FAIL: node3 after multi-remote execution
  • Prompts to retry only the failed nodes
• CreateFromISO ArgumentParser Migration - Replaced getopts with __parse_args__
  • Arguments now use --vm-name, --iso-url, --vm-storage style flags
  • All 8 arguments optional with interactive fallback preserved

Added

• CI Unit Tests - Added unit test stage to .github/workflows/checks.yml
  • Runs Utilities/RunAllTests.sh after static analysis checks
• BulkOperations Source Guards - Defensive guards on source calls in BulkOperations.sh
• GUI Update Safety Guard - Validates BASE_DIR before cleanup in update_scripts()
• Documentation - Added Manuals/README.md table of contents and Documentation section in main README

Performance

• FindVMIDFromIP Caching - Config fetched once per VMID instead of 3 times (~67% fewer API calls)
• Double-Sed Consolidation - Merged 9 paired sed | sed calls into single sed -e ... -e ...
  • Applied to BulkConfigureNetworkBandwidth, BulkConfigureDiskIOPS, BulkConfigureDiskBandwidth
• Bash Builtins - Replaced echo | tr subprocesses with native ${var^^} case conversion
  • Applied to FindVMIDFromIP, BulkCloneSetIP_Proxmox, BulkReconfigureMacAddresses, Conversion.sh, ChangeAllMACPrefix.sh
• Carriage Return Removal - Replaced echo | tr -d '\r' with ${var//$'\r'/} in GUI.sh

Technical Details

• sshpass -e reads from SSHPASS environment variable; inline assignment (SSHPASS=x cmd) used where possible
• declare -g requires Bash 4.2+
• eval retained in TestFramework.sh (dynamic function stubs) and RemoteExecutor.sh (SSH parameter expansion) - both legitimate uses
• Multi-node retry uses recursive __execute_remote_script__ call with filtered target list
• FindVMIDFromIP caches both JSON and plain-text config formats per VMID for reuse
• --data-urlencode sends each parameter separately, preventing URL parameter injection