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/security.sh

@@ -5,14 +5,24 @@
 # Version: 1.0.0
 
 # Source common functions
-SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-source "$SCRIPT_DIR/common.sh"
+LIB_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "$LIB_DIR/common.sh"
 
 # Password validation
 validate_password() {
     local password="$1"
     local min_length="${2:-12}"
-    
+
+    if [[ -z "$password" ]]; then
+        echo -e "\n Password must meet these requirements:"
+        echo "   - Minimum $min_length characters"
+        echo "   - At least one uppercase letter"
+        echo "   - At least one lowercase letter"
+        echo "   - At least one number"
+        echo "   - At least one special character"
+        return 3
+    fi
+
     # Check minimum length
     if [[ ${#password} -lt $min_length ]]; then
         debug "Password too short: ${#password} < $min_length"