fix: revert swagger-jsdoc to 6.2.8 (7.0.0-rc.6 broke OpenAPI spec generation) + add OpenAPI spec tests

swagger-jsdoc 7.0.0-rc.6 returns empty spec (0 paths), breaking /docs and /openapi.json.
Reverted to 6.2.8 which correctly generates all 10+ paths.
Added 2 regression tests to catch this in CI.

package-lock.json

@@ -19,7 +19,7 @@
         "pino": "^10.3.1",
         "puppeteer": "^24.0.0",
         "stripe": "^20.3.1",
-        "swagger-jsdoc": "^7.0.0-rc.6",
+        "swagger-jsdoc": "^6.2.8",
         "swagger-ui-dist": "^5.31.0"
       },
       "devDependencies": {
@@ -63,9 +63,9 @@
       "license": "MIT"
     },
     "node_modules/@apidevtools/swagger-parser": {
-      "version": "10.0.2",
+      "version": "10.0.3",
-      "resolved": "https://registry.npmjs.org/@apidevtools/swagger-parser/-/swagger-parser-10.0.2.tgz",
+      "resolved": "https://registry.npmjs.org/@apidevtools/swagger-parser/-/swagger-parser-10.0.3.tgz",
-      "integrity": "sha512-JFxcEyp8RlNHgBCE98nwuTkZT6eNFPc1aosWV6wPcQph72TSEEu1k3baJD4/x1qznU+JiDdz8F5pTwabZh+Dhg==",
+      "integrity": "sha512-sNiLY51vZOmSPFZA5TF35KZ2HbgYklQnTSDnkghamzLb3EkNtcQnrBQEj5AOCxHpTtXpqMCRM1CrmV2rG6nw4g==",
       "license": "MIT",
       "dependencies": {
         "@apidevtools/json-schema-ref-parser": "^9.0.6",
@@ -73,7 +73,7 @@
         "@apidevtools/swagger-methods": "^3.0.2",
         "@jsdevtools/ono": "^7.1.3",
         "call-me-maybe": "^1.0.1",
-        "z-schema": "^4.2.3"
+        "z-schema": "^5.0.1"
       },
       "peerDependencies": {
         "openapi-types": ">=7"
@@ -1713,7 +1713,7 @@
       "version": "2.20.3",
       "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz",
       "integrity": "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==",
-      "devOptional": true,
+      "dev": true,
       "license": "MIT"
     },
     "node_modules/compressible": {
@@ -4002,21 +4002,34 @@
       }
     },
     "node_modules/swagger-jsdoc": {
-      "version": "7.0.0-rc.6",
+      "version": "6.2.8",
-      "resolved": "https://registry.npmjs.org/swagger-jsdoc/-/swagger-jsdoc-7.0.0-rc.6.tgz",
+      "resolved": "https://registry.npmjs.org/swagger-jsdoc/-/swagger-jsdoc-6.2.8.tgz",
-      "integrity": "sha512-LIvIPQxipRaOzIij+HrWOcCWTINE6OeJuqmXCfDkofVcstPVABHRkaAc3D7vrX9s7L0ccH0sH0amwHgN6+SXPg==",
+      "integrity": "sha512-VPvil1+JRpmJ55CgAtn8DIcpBs0bL5L3q5bVQvF4tAW/k/9JYSj7dCpaYCAv5rufe0vcCbBRQXGvzpkWjvLklQ==",
       "license": "MIT",
       "dependencies": {
+        "commander": "6.2.0",
         "doctrine": "3.0.0",
         "glob": "7.1.6",
-        "lodash.mergewith": "4.6.2",
+        "lodash.mergewith": "^4.6.2",
-        "swagger-parser": "10.0.2",
+        "swagger-parser": "^10.0.3",
         "yaml": "2.0.0-1"
       },
+      "bin": {
+        "swagger-jsdoc": "bin/swagger-jsdoc.js"
+      },
       "engines": {
         "node": ">=12.0.0"
       }
     },
+    "node_modules/swagger-jsdoc/node_modules/commander": {
+      "version": "6.2.0",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-6.2.0.tgz",
+      "integrity": "sha512-zP4jEKbe8SHzKJYQmq8Y9gYjtO/POJLgIdKgV7B9qNmABVFVc+ctqSX6iXh4mCpJfRBOabiZ2YKPg8ciDw6C+Q==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 6"
+      }
+    },
     "node_modules/swagger-jsdoc/node_modules/yaml": {
       "version": "2.0.0-1",
       "resolved": "https://registry.npmjs.org/yaml/-/yaml-2.0.0-1.tgz",
@@ -4027,12 +4040,12 @@
       }
     },
     "node_modules/swagger-parser": {
-      "version": "10.0.2",
+      "version": "10.0.3",
-      "resolved": "https://registry.npmjs.org/swagger-parser/-/swagger-parser-10.0.2.tgz",
+      "resolved": "https://registry.npmjs.org/swagger-parser/-/swagger-parser-10.0.3.tgz",
-      "integrity": "sha512-9jHkHM+QXyLGFLk1DkXBwV+4HyNm0Za3b8/zk/+mjr8jgOSiqm3FOTHBSDsBjtn9scdL+8eWcHdupp2NLM8tDw==",
+      "integrity": "sha512-nF7oMeL4KypldrQhac8RyHerJeGPD1p2xDh900GPvc+Nk7nWP6jX2FcC7WmkinMoAmoO774+AFXcWsW8gMWEIg==",
       "license": "MIT",
       "dependencies": {
-        "@apidevtools/swagger-parser": "10.0.2"
+        "@apidevtools/swagger-parser": "10.0.3"
       },
       "engines": {
         "node": ">=10"
@@ -4644,23 +4657,33 @@
       }
     },
     "node_modules/z-schema": {
-      "version": "4.2.4",
+      "version": "5.0.5",
-      "resolved": "https://registry.npmjs.org/z-schema/-/z-schema-4.2.4.tgz",
+      "resolved": "https://registry.npmjs.org/z-schema/-/z-schema-5.0.5.tgz",
-      "integrity": "sha512-YvBeW5RGNeNzKOUJs3rTL4+9rpcvHXt5I051FJbOcitV8bl40pEfcG0Q+dWSwS0/BIYrMZ/9HHoqLllMkFhD0w==",
+      "integrity": "sha512-D7eujBWkLa3p2sIpJA0d1pr7es+a7m0vFAnZLlCEKq/Ij2k0MLi9Br2UPxoxdYystm5K1yeBGzub0FlYUEWj2Q==",
       "license": "MIT",
       "dependencies": {
         "lodash.get": "^4.4.2",
         "lodash.isequal": "^4.5.0",
-        "validator": "^13.6.0"
+        "validator": "^13.7.0"
       },
       "bin": {
         "z-schema": "bin/z-schema"
       },
       "engines": {
-        "node": ">=6.0.0"
+        "node": ">=8.0.0"
       },
       "optionalDependencies": {
-        "commander": "^2.7.1"
+        "commander": "^9.4.1"
+      }
+    },
+    "node_modules/z-schema/node_modules/commander": {
+      "version": "9.5.0",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-9.5.0.tgz",
+      "integrity": "sha512-KRs7WVDKg86PWiuAqhDrAQnTXZKraVcCc6vFdL14qrZ/DcWwuRo7VoiYXalXO7S5GKpqYiVEwCbgFDfxNHKJBQ==",
+      "license": "MIT",
+      "optional": true,
+      "engines": {
+        "node": "^12.20.0 || >=14"
       }
     },
     "node_modules/zod": {

package.json

@@ -23,7 +23,7 @@
     "pino": "^10.3.1",
     "puppeteer": "^24.0.0",
     "stripe": "^20.3.1",
-    "swagger-jsdoc": "^7.0.0-rc.6",
+    "swagger-jsdoc": "^6.2.8",
     "swagger-ui-dist": "^5.31.0"
   },
   "devDependencies": {

src/__tests__/api.test.ts

@@ -585,6 +585,27 @@ describe("Rate limit headers on PDF endpoints", () => {
   });
 });
 
+describe("OpenAPI spec", () => {
+  it("returns a valid OpenAPI 3.0 spec with paths", async () => {
+    const res = await fetch(`${BASE}/openapi.json`);
+    expect(res.status).toBe(200);
+    const spec = await res.json();
+    expect(spec.openapi).toBe("3.0.3");
+    expect(spec.info).toBeDefined();
+    expect(spec.info.title).toBe("DocFast API");
+    expect(Object.keys(spec.paths).length).toBeGreaterThanOrEqual(8);
+  });
+
+  it("includes all major endpoint groups", async () => {
+    const res = await fetch(`${BASE}/openapi.json`);
+    const spec = await res.json();
+    const paths = Object.keys(spec.paths);
+    expect(paths).toContain("/v1/convert/html");
+    expect(paths).toContain("/v1/convert/markdown");
+    expect(paths).toContain("/health");
+  });
+});
+
 describe("404 handler", () => {
   it("returns proper JSON error format for API routes", async () => {
     const res = await fetch(`${BASE}/v1/nonexistent-endpoint`);