fix(auth): address Copilot review round 2 on the RFC 7009 revocation (#2144)

- `revokeStoredKeys`' pre-read of `getTokens` sat outside the best-effort
  catch. `getTokens` parses through `OAuthTokensSchema`, so a persisted token
  that no longer validates rejected and abandoned the local delete `--relogin`
  promises — over a grant that could not have been revoked anyway. Caught and
  retained as a failed outcome; the clear proceeds.
- The multi-key bookkeeping was wrong twice. A token is now marked spent only
  on a `revoked` outcome, so a failed or unsupported attempt no longer skips a
  duplicate entry under the other key that may hold the credentials or metadata
  that would have worked. And a failure now outranks an earlier success for
  reporting, so a stale grant left live cannot be hidden behind the first key's
  200.
- `--no-revoke` is now rejected without `--relogin`, ahead of the short-circuit
  returns, matching the parser's existing stance on accepted-but-inert flags
  (`--strict`). On its own it reads as "this run will not revoke anything",
  true only because nothing was being cleared.
- Extracted the App draft merge as `utils/serverWithDraftSettings`, so the rule
  has a test. The hook tests receive whatever they are handed and cannot tell a
  draft from a persisted entry, and `App.test.tsx`'s settings harness connects
  a stdio server where the OAuth section never renders.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0177mPHAdECD18nLLCTwR5rh
Signed-off-by: cliffhall <cliff@futurescale.com>

clients/web/src/utils/serverWithDraftSettings.test.ts

@@ -0,0 +1,67 @@
+import { describe, it, expect } from "vitest";
+import type {
+  InspectorServerSettings,
+  ServerEntry,
+} from "@inspector/core/mcp/types.js";
+import { serverWithDraftSettings } from "./serverWithDraftSettings";
+
+const settings = (
+  over: Partial<InspectorServerSettings> = {},
+): InspectorServerSettings => ({
+  headers: [],
+  env: [],
+  metadata: {},
+  connectionTimeout: 0,
+  requestTimeout: 0,
+  taskTtl: 60000,
+  maxFetchRequests: 1000,
+  roots: [],
+  ...over,
+});
+
+const entry = (over: Partial<ServerEntry> = {}): ServerEntry =>
+  ({
+    id: "a",
+    name: "Server A",
+    config: { type: "streamable-http", url: "https://mcp.example/mcp" },
+    connection: { status: "disconnected" },
+    ...over,
+  }) as ServerEntry;
+
+describe("serverWithDraftSettings", () => {
+  // The case the helper exists for (#2144): an action in the settings modal
+  // must read the value on screen, not the one the debounced save has written.
+  it("prefers an unsaved draft over the persisted settings", () => {
+    const result = serverWithDraftSettings(
+      entry({ settings: settings({ oauthRevokeOnClear: undefined }) }),
+      settings({ oauthRevokeOnClear: false }),
+    );
+    expect(result.settings?.oauthRevokeOnClear).toBe(false);
+  });
+
+  // The other direction matters just as much: re-checking the box before the
+  // save lands must not leave the clear skipping revocation.
+  it("prefers a draft that turns the setting back on", () => {
+    const result = serverWithDraftSettings(
+      entry({ settings: settings({ oauthRevokeOnClear: false }) }),
+      settings({ oauthRevokeOnClear: undefined }),
+    );
+    expect(result.settings?.oauthRevokeOnClear).toBeUndefined();
+  });
+
+  it("returns the entry untouched when there is no draft", () => {
+    const original = entry({
+      settings: settings({ oauthRevokeOnClear: false }),
+    });
+    expect(serverWithDraftSettings(original, undefined)).toBe(original);
+  });
+
+  it("keeps the entry's identity and config", () => {
+    const original = entry({ settings: settings() });
+    const result = serverWithDraftSettings(original, settings({ taskTtl: 1 }));
+    expect(result.id).toBe(original.id);
+    expect(result.name).toBe(original.name);
+    expect(result.config).toBe(original.config);
+    expect(result).not.toBe(original);
+  });
+});

clients/web/src/utils/serverWithDraftSettings.ts

@@ -0,0 +1,34 @@
+import type {
+  InspectorServerSettings,
+  ServerEntry,
+} from "@inspector/core/mcp/types.js";
+
+/**
+ * A server entry whose `settings` reflect the **unsaved** settings draft.
+ *
+ * Actions taken from inside the Server Settings modal have to act on what the
+ * user is looking at, not on what has been persisted. The entry comes from the
+ * `servers` list, which the debounced save has not reached yet, so reading its
+ * `settings` means a control toggled a moment ago is still at its previous
+ * value. That is invisible for most settings — they are read on the next
+ * connect — but not for one consumed by a button in the same dialog:
+ * unchecking "Revoke tokens on clear" and immediately clearing would still
+ * revoke, and re-checking it would still skip (#2144).
+ *
+ * `draft` is nullish before the modal has produced one — `useSettingsDraft`
+ * types it `| null` and callers may hold `| undefined` — in which case the
+ * entry's own settings are already the current answer. Both are accepted so a
+ * caller never has to normalize one into the other at the call site, which is
+ * exactly where the distinction would get lost.
+ *
+ * Extracted rather than inlined at the call site so the rule has a test: the
+ * hook tests below `clearServerOAuthAndDisconnect` receive whatever they are
+ * handed and cannot tell a draft from a persisted entry, and `App.tsx`'s own
+ * settings harness connects a stdio server, where the OAuth section never
+ * renders at all.
+ */
+export function serverWithDraftSettings<
+  T extends Pick<ServerEntry, "settings">,
+>(entry: T, draft: InspectorServerSettings | null | undefined): T {
+  return draft == null ? entry : { ...entry, settings: draft };
+}