fix(web): answer the review on the declared-provider editor

The display name read only the user layer while its placeholder claimed a
cleared field falls back to the route id. A `cordis.yml` can pin a name
for a route the catalog does not ship, and clearing then restores that
name, not the id. The placeholder now reads the composition layer — the
same layer `inheritedModels` reads — and names the route id only when
nothing pins one.

The saved notice echoed the target captured when the card opened, which
never lied while the name could not change. It now names the provider as
the refreshed directory reports it, and is announced only once that
refresh is in the snapshot it reads from.

The protocol select's blank option is named, because a screen reader
announces it either way and an unnamed one is a choice with no identity.
`protocolChoices` no longer rehydrates the section schema for the two
layouts that have no per-route protocol to find.

Documentation caught up with the same broom: the module JSDoc and the
e2e header both still described one field where the fold now carries
two, the English user guide carried a Chinese UI label among English
ones, and the README's DeepSeek row inventory omitted `maxTokens`.

apps/web/tests/models-settings.e2e.ts

@@ -4,8 +4,9 @@
 // stores it write-only under the derived reference (`MINIMAX_CN_API_KEY`)
 // while the settings document records only that reference. Each saved row
 // appears after route topology invalidation without presenting liveness as
-// provider status. The customized-settings fold writes the curated
-// reasoning field as a merge patch. Zero model calls: configuration is pure
+// provider status. The customized-settings fold writes its curated fields —
+// the endpoint, and a declared route's own name and protocol — as merge
+// patches against the stored profile. Zero model calls: configuration is pure
 // settings/credentials/llm-domain traffic, so there is no fixture and a
 // stray stream would fail loud because the adapter registry is empty. The provider under test is
 // minimax-cn so a developer's real ANTHROPIC/OPENAI environment keys can
@@ -235,6 +236,9 @@ describe('web e2e: Models settings page configures a dormant provider', () => {
     // at the write instead, and a rename that did not re-register would leave
     // the old label on the row.
     await dialog.getByText('Acme 网关', { exact: true }).first().waitFor({ timeout: 10_000 })
+    // The status line names the route as the refreshed directory reports it;
+    // the target captured when the card opened still carries the old name.
+    await dialog.getByText('已保存 Acme 网关 (acme-gateway)。', { exact: true }).waitFor({ timeout: 10_000 })
     const document = await readFile(join(scaffold.harnessHome, 'settings.yaml'), 'utf8')
     expect(document).toContain('api: anthropic-messages')
     expect(document).toContain('displayName: Acme 网关')