Miscellaneous fixes (#23009)

* Reduce max frames per second to 1

* Use pydantic but don't fail if some constraints are not met.

* Adjust limits

* Adjust limits

* Cleanup

* add unsaved changes icon/popover to individual settings section

* allow changing camera friendly_name from camera management pane

---------

Co-authored-by: Josh Hawkins <32435876+hawkeye217@users.noreply.github.com>

web/src/utils/configUtil.ts

@@ -219,6 +219,32 @@ export function buildOverrides(
   return current;
 }
 
+// ---------------------------------------------------------------------------
+// flattenOverrides — turn an overrides object into a list of leaf paths
+// ---------------------------------------------------------------------------
+
+// Walks a nested overrides value and produces a flat list of `{ path, value }`
+// entries, one per leaf.  Used by save/preview UIs to enumerate the individual
+// fields that will be changed.
+export function flattenOverrides(
+  value: JsonValue | undefined,
+  path: string[] = [],
+): Array<{ path: string; value: JsonValue }> {
+  if (value === undefined) return [];
+  if (value === null || typeof value !== "object" || Array.isArray(value)) {
+    return [{ path: path.join("."), value }];
+  }
+
+  const entries = Object.entries(value);
+  if (entries.length === 0) {
+    return [{ path: path.join("."), value: {} }];
+  }
+
+  return entries.flatMap(([key, entryValue]) =>
+    flattenOverrides(entryValue, [...path, key]),
+  );
+}
+
 // ---------------------------------------------------------------------------
 // sanitizeSectionData — normalize config values and strip hidden fields
 // ---------------------------------------------------------------------------