chore: remove redundant sensors card and bump version to 1.22.1

- Disable sensors data collection (CPU temp already shown in CPU card)
- Remove unused sensor-related functions (collectSensors, prettifyLabel, hasSensorData, renderSensorsCard)
- Remove unused gopsutil/sensors import
- Fix inline spinner disown call with explicit PID
- Update version from 1.22.0 to 1.22.1
- Update SECURITY_AUDIT.md to match new version and date

lib/core/ui.sh

@@ -316,7 +316,7 @@ start_inline_spinner() {
             exit 0
         ) &
         INLINE_SPINNER_PID=$!
-        disown 2> /dev/null || true
+        disown "$INLINE_SPINNER_PID" 2> /dev/null || true
     else
         echo -n "  ${BLUE}|${NC} $message" >&2 || true
     fi