fix(deploy): address final review — sensitiveKeys snapshot, dirty scrubbing, transition race, refetch invalidations

- Issue 1: add List<String> sensitiveKeys as 4th field to DeploymentConfigSnapshot; populate
  from agentConfig.getSensitiveKeys() in DeploymentExecutor; handleRestore hydrates from
  snap.sensitiveKeys directly; Deployment type in apps.ts gains sensitiveKeys field
- Issue 2: after createApp succeeds, refetchQueries(['apps', envSlug]) before navigate so the
  new app is in cache before the router renders the deployed view (eliminates transient Save-
  disabled flash)
- Issue 3: useDeploymentPageState useEffect now uses prevServerStateRef to detect local edits;
  background refetches only overwrite form when no local changes are present
- Issue 5: handleRedeploy invalidates dirty-state + versions queries after createDeployment
  resolves; handleSave invalidates dirty-state after staged save
- Issue 10: DirtyStateCalculator strips volatile agentConfig keys (version, updatedAt, updatedBy,
  environment, application) before JSON comparison via scrubAgentConfig(); adds
  versionBumpDoesNotMarkDirty test

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

ui/src/pages/AppsTab/AppDeploymentPage/hooks/useDeploymentPageState.ts

@@ -1,5 +1,5 @@
 // ui/src/pages/AppsTab/AppDeploymentPage/hooks/useDeploymentPageState.ts
-import { useState, useEffect, useMemo } from 'react';
+import { useState, useEffect, useMemo, useRef } from 'react';
 import type { ApplicationConfig } from '../../../../api/queries/commands';
 import type { App } from '../../../../api/queries/admin/apps';
 
@@ -115,9 +115,18 @@ export function useDeploymentPageState(
   }, [app, agentConfig, envDefaults]);
 
   const [form, setForm] = useState<DeploymentPageFormState>(serverState);
+  const prevServerStateRef = useRef<DeploymentPageFormState>(serverState);
 
   useEffect(() => {
-    setForm(serverState);
+    // Only overwrite form if the current form value still matches the previous
+    // server state (i.e., the user has no local edits). Otherwise preserve
+    // user edits through background refetches.
+    setForm((current) => {
+      const hadLocalEdits =
+        JSON.stringify(current) !== JSON.stringify(prevServerStateRef.current);
+      prevServerStateRef.current = serverState;
+      return hadLocalEdits ? current : serverState;
+    });
   }, [serverState]);
 
   return { form, setForm, reset: () => setForm(serverState), serverState };