feat(server): add revealHttpAuthLiterals API and enhance web interface for credential management

- Implemented revealHttpAuthLiterals function to return plaintext credential fields from HTTP auth configurations.
- Added a new endpoint in the HTTP auths API to reveal credentials securely.
- Updated the web interface to fetch and display plaintext literals, improving user experience for managing credentials.
- Enhanced CredentialFields component to support revealing and masking credential values dynamically.

packages/server/src/api/http-auths.js

@@ -6,6 +6,7 @@ import {
   getHttpAuthByName,
   upsertHttpAuth,
   deleteHttpAuth,
+  revealHttpAuthLiterals,
 } from "../../http-auths-store.js";
 import { getHttpPageByName } from "../../http-pages-store.js";
 
@@ -17,6 +18,20 @@ export default async function httpAuthsPlugin(fastify) {
     return { auths: await listHttpAuths() };
   });
 
+  fastify.get("/http-auths/:name/reveal", async (req, reply) => {
+    const { name } = /** @type {{ name: string }} */ (req.params);
+    try {
+      assertAuthName(name);
+    } catch (err) {
+      return reply.code(err.statusCode ?? 400).send({ error: err.message });
+    }
+    const revealed = await revealHttpAuthLiterals(name);
+    if (!revealed) {
+      return reply.code(404).send({ error: "auth not found" });
+    }
+    return revealed;
+  });
+
   fastify.get("/http-auths/:name", async (req, reply) => {
     const { name } = /** @type {{ name: string }} */ (req.params);
     try {