Consolidate duplicate functions, bump to v1.0.1

- Remove duplicate log/error_exit/warning/success/info from hops and
  uninstall; remove validate_password, generate_secure_password,
  create_docker_networks, validate_timezone from install. Single
  canonical copies now live in lib/common.sh, lib/security.sh,
  lib/validation.sh, and lib/docker.sh (A5, Q1)
- Fix lib/docker.sh, lib/validation.sh, lib/security.sh to use LIB_DIR
  instead of SCRIPT_DIR so sourcing them inside a function does not
  clobber the caller's SCRIPT_DIR
- Move SCRIPT_VERSION to lib/common.sh as the single source of truth;
  remove local declarations from hops, install, and uninstall
- uninstall now sources lib/common.sh directly for standalone safety
- validate_timezone updated to warn-and-default instead of error_exit
- validate_password updated to handle empty input (return 3)
- Update CHANGELOG and TODO to reflect resolved items (B1-B6, A1, A3,
  A5, Q1) and bump version to 1.0.1

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

lib/common.sh

@@ -2,7 +2,6 @@
 
 # HOPS - Common Utility Functions
 # Shared functions for logging, error handling, and UI
-# Version: 1.0.0
 
 # Prevent multiple sourcing
 if [[ -n "${HOPS_COMMON_LOADED:-}" ]]; then
@@ -10,6 +9,8 @@ if [[ -n "${HOPS_COMMON_LOADED:-}" ]]; then
 fi
 readonly HOPS_COMMON_LOADED=1
 
+readonly SCRIPT_VERSION="1.0.1"
+
 # Color codes for output
 readonly RED='\033[0;31m'
 readonly GREEN='\033[0;32m'