every control writes itself

The Save button is gone, and so is the SaveTarget context that announced it.
Every screen here is a preview of the thing being edited, so a change is already
visible before it is written — a button then asks somebody to confirm what they
can see.

useAutosave debounces a burst into one request. It takes the unsaved state as a
string rather than a flag, so a failed save is not retried on the next render,
and it flushes on unmount so a section change loses nothing.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

web/sections/RecordsPanel.tsx

@@ -7,7 +7,7 @@ import { Input } from '@/components/ui/input';
 import { readableError } from '../errors';
 import { useFlash } from '../useFlash';
 import { MediaPicker } from '../MediaPicker';
-import { useSaveTarget } from '../SaveTarget';
+import { useAutosave } from '../useAutosave';
 import type { RecordsConfig } from './records';
 
 /**
@@ -222,7 +222,7 @@ export const RecordsPanel = ({ config }: { config: RecordsConfig }) => {
         config.fields.some((f) => asText(draft[f.key]) !== asText(open[f.key]))),
   );
 
-  useSaveTarget(dirty, busy !== null, save);
+  useAutosave(dirty ? 'dirty' : null, busy !== null, save);
 
   return (
     <div className="flex size-full flex-col gap-4 overflow-auto p-4">