fix: harden unicode safety checks

skills/continuous-learning-v2/agents/start-observer.sh

@@ -5,13 +5,13 @@
 # and creates instincts. Uses Haiku model for cost efficiency.
 #
 # v2.1: Project-scoped — detects current project and analyzes
-#       project-specific observations into project-scoped instincts.
+# project-specific observations into project-scoped instincts.
 #
 # Usage:
-#   start-observer.sh              # Start observer for current project (or global)
-#   start-observer.sh --reset      # Clear lock and restart observer for current project
-#   start-observer.sh stop         # Stop running observer
-#   start-observer.sh status       # Check if observer is running
+# start-observer.sh              # Start observer for current project (or global)
+# start-observer.sh --reset      # Clear lock and restart observer for current project
+# start-observer.sh stop         # Stop running observer
+# start-observer.sh status       # Check if observer is running
 
 set -e