chore(deps-dev): bump @opencode-ai/plugin

Bumps @opencode-ai/plugin from 0.0.0-next-16775 to 1.18.30.

---
updated-dependencies:
- dependency-name: "@opencode-ai/plugin"
  dependency-version: 1.18.27
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

apps/opencode-plugin/package.json

@@ -44,7 +44,7 @@
     "prepublishOnly": "bun run build"
   },
   "devDependencies": {
-    "@opencode-ai/plugin": "0.0.0-next-16775",
+    "@opencode-ai/plugin": "1.18.30",
     "@plannotator/server": "workspace:*",
     "@plannotator/shared": "workspace:*"
   },