convert share backend to hono app

bun.lock

@@ -14,6 +14,7 @@
       "dependencies": {
         "@octokit/auth-app": "8.0.1",
         "@octokit/rest": "22.0.0",
+        "hono": "catalog:",
         "jose": "6.0.11",
       },
       "devDependencies": {
@@ -41,7 +42,7 @@
         "decimal.js": "10.5.0",
         "diff": "8.0.2",
         "gray-matter": "4.0.3",
-        "hono": "4.7.10",
+        "hono": "catalog:",
         "hono-openapi": "0.4.8",
         "isomorphic-git": "1.32.1",
         "open": "10.1.2",
@@ -133,6 +134,7 @@
   "catalog": {
     "@types/node": "22.13.9",
     "ai": "5.0.0-beta.21",
+    "hono": "4.7.10",
     "typescript": "5.8.2",
     "zod": "3.25.49",
   },