Implement pump flow monitoring and UI normalization enhancements

- Rust: Add `MIN_PUMP_FLOW_ML` constant and logging for insufficient pump flow with fault handling.
- UI: Normalize config fields to maintain consistency and prevent false dirty flags after round-trips.
- KiCad: Update board zone settings for `PlantCtrlESP32` and `MPPT`.
- IntelliJ: Add `.idea` configurations for project setup and inspections.

.idea/PlantCtrl.iml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="EMPTY_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

.idea/inspectionProfiles/Project_Default.xml

@@ -0,0 +1,6 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="Eslint" enabled="true" level="WARNING" enabled_by_default="true" />
+  </profile>
+</component>

.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/PlantCtrl.iml" filepath="$PROJECT_DIR$/.idea/PlantCtrl.iml" />
+    </modules>
+  </component>
+</project>

.idea/prettier.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="PrettierConfiguration">
+    <option name="myConfigurationMode" value="AUTOMATIC" />
+  </component>
+</project>

.idea/vcs.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+    <mapping directory="$PROJECT_DIR$/website/themes/blowfish" vcs="Git" />
+  </component>
+</project>