feat(api-docs): generate response examples from Go structs; fix SS2022 PSK regen (#4996)

Stop hand-writing OpenAPI response examples, which kept drifting from the real payloads (clients/traffic missing fields, inbounds/list exposing userId which is json:"-", the fictional inbound-443 tag instead of the real in-<port>-<transport> form).

tools/openapigen now emits frontend/src/generated/examples.ts: a per-struct example instance built from type defaults, validate oneof/min bounds, and example: struct tags, with nested-ref expansion and a cycle guard. build-openapi.mjs composes the {success,obj} envelope from it for any endpoint annotated with responseSchema (+ responseSchemaArray for lists); the hand-written response is dropped for those. Service DTOs InboundOption/ApiTokenView/ProbeResultUI are added to the walker.

#4996: client password regeneration now produces a valid Shadowsocks 2022 PSK (correct base64 length per cipher) when an SS2022 inbound is attached, in both the single and bulk client forms; backend surfaces ssMethod on /inbounds/options so the UI can pick the right length.

Also: Swagger UI persists the Authorization token across reloads (persistAuthorization).

frontend/scripts/build-openapi.mjs

@@ -4,6 +4,7 @@ import { join, dirname } from 'node:path';
 import { fileURLToPath, pathToFileURL } from 'node:url';
 
 import { sections } from '../src/pages/api-docs/endpoints.ts';
+import { EXAMPLES } from '../src/generated/examples.ts';
 
 const __dirname = dirname(fileURLToPath(import.meta.url));
 const outPath = join(__dirname, '..', 'public', 'openapi.json');
@@ -128,7 +129,14 @@ function buildOperation(ep, tag) {
   }
 
   const responses = {};
-  const successExample = tryParseJson(ep.response);
+  let successExample = tryParseJson(ep.response);
+  if (successExample === undefined && ep.responseSchema) {
+    const obj = EXAMPLES[ep.responseSchema];
+    if (obj === undefined) {
+      throw new Error(`${ep.method} ${ep.path}: responseSchema "${ep.responseSchema}" has no generated example`);
+    }
+    successExample = { success: true, obj: ep.responseSchemaArray ? [obj] : obj };
+  }
   responses['200'] = {
     description: 'Successful response',
     content: {