fix(dashboard): Config page header shows the switched profile's config.yaml path (#44374)

The Config page read config_path from /api/status, which is machine-global
and always reports the profile the dashboard process was started under.
After switching profiles with the global switcher, the header kept showing
the old profile's path (e.g. /root/.hermes/profiles/worker_1/config.yaml)
even though reads/writes correctly targeted the new profile.

Fix: /api/config/raw now returns the resolved path alongside the YAML
(resolved inside _profile_scope, so it follows ?profile=). ConfigPage
prefers that scoped path and only falls back to /api/status for old
servers. ProfileKeyedRoutes already remounts the page on switch, so the
header refreshes immediately.

web/src/lib/api.ts

@@ -432,7 +432,7 @@ export const api = {
       headers: { "Content-Type": "application/json" },
       body: JSON.stringify({ config }),
     }),
-  getConfigRaw: () => fetchJSON<{ yaml: string }>("/api/config/raw"),
+  getConfigRaw: () => fetchJSON<{ yaml: string; path?: string }>("/api/config/raw"),
   saveConfigRaw: (yaml_text: string) =>
     fetchJSON<{ ok: boolean }>("/api/config/raw", {
       method: "PUT",