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).

tools/openapigen/main.go

@@ -69,6 +69,14 @@ func run(root, outDir string) error {
 				"ClientTraffic",
 			),
 		},
+		{
+			Path: resolveRel(root, "web/service"),
+			StructAllow: setOf(
+				"InboundOption",
+				"ApiTokenView",
+				"ProbeResultUI",
+			),
+		},
 	}
 
 	schemas, aliases, err := walkPackages(requests)
@@ -94,6 +102,10 @@ func run(root, outDir string) error {
 	if err := emitTypes(typesBuf, schemas, aliases); err != nil {
 		return err
 	}
+	examplesBuf := &bytes.Buffer{}
+	if err := emitExamples(examplesBuf, schemas, aliases); err != nil {
+		return err
+	}
 
 	if err := os.WriteFile(filepath.Join(target, "zod.ts"), zodBuf.Bytes(), 0o644); err != nil {
 		return err
@@ -101,6 +113,9 @@ func run(root, outDir string) error {
 	if err := os.WriteFile(filepath.Join(target, "types.ts"), typesBuf.Bytes(), 0o644); err != nil {
 		return err
 	}
+	if err := os.WriteFile(filepath.Join(target, "examples.ts"), examplesBuf.Bytes(), 0o644); err != nil {
+		return err
+	}
 
 	fmt.Printf("openapigen: wrote %d schemas to %s\n", len(schemas), target)
 	return nil