fix(install): add lib/ directory copy for response_analyzer.sh

The install.sh was missing the lib/ directory copy, causing ralph_loop.sh
to fail when sourcing response_analyzer.sh and circuit_breaker.sh.

Changes:
- Add mkdir -p "$RALPH_HOME/lib" to create_install_dirs()
- Add cp -r "$SCRIPT_DIR/lib/"* "$RALPH_HOME/lib/" to install_scripts()
- Add chmod +x for lib/*.sh scripts

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

install.sh

@@ -75,6 +75,7 @@ create_install_dirs() {
     mkdir -p "$INSTALL_DIR"
     mkdir -p "$RALPH_HOME"
     mkdir -p "$RALPH_HOME/templates"
+    mkdir -p "$RALPH_HOME/lib"
 
     log "SUCCESS" "Directories created: $INSTALL_DIR, $RALPH_HOME"
 }
@@ -86,6 +87,9 @@ install_scripts() {
     # Copy templates to Ralph home
     cp -r "$SCRIPT_DIR/templates/"* "$RALPH_HOME/templates/"
 
+    # Copy lib scripts (response_analyzer.sh, circuit_breaker.sh)
+    cp -r "$SCRIPT_DIR/lib/"* "$RALPH_HOME/lib/"
+    
     # Create the main ralph command
     cat > "$INSTALL_DIR/ralph" << 'EOF'
 #!/bin/bash
@@ -141,6 +145,7 @@ EOF
     chmod +x "$INSTALL_DIR/ralph-import"
     chmod +x "$RALPH_HOME/ralph_monitor.sh"
     chmod +x "$RALPH_HOME/ralph_import.sh"
+    chmod +x "$RALPH_HOME/lib/"*.sh
 
     log "SUCCESS" "Ralph scripts installed to $INSTALL_DIR"
 }