Update Opencode example to use prebuilt images (#549)

* Update OpenCode example to use pre-built image

This commit updates the examples/opencode/Dockerfile to use the
cloudflare/sandbox:<version>-opencode image and removes the installation
steps.

It also regenerates the worker-configuration.d.ts file with latest
wrangler.

* Don't fail precommit if there are no files to lint

This change passes the `--no-errors-on-unmatched` flag to biome check so
that the tool doesn't give a non-zero exit code when there are no
matching files to check.

Author: aron-cf

examples/opencode/Dockerfile

@@ -1,13 +1,4 @@
-FROM docker.io/cloudflare/sandbox:0.8.3
-
-# Add opencode install location to PATH before installation
-ENV PATH="/root/.opencode/bin:${PATH}"
-
-# Install OpenCode CLI
-RUN curl -fsSL https://opencode.ai/install -o /tmp/install-opencode.sh \
-    && bash /tmp/install-opencode.sh \
-    && rm /tmp/install-opencode.sh \
-    && opencode --version
+FROM docker.io/cloudflare/sandbox:0.8.3-opencode
 
 # Clone sample project for the web UI to work with
 RUN git clone --depth 1 https://github.com/cloudflare/agents.git /home/user/agents

examples/opencode/package.json

@@ -8,7 +8,7 @@
     "deploy": "wrangler deploy",
     "dev": "wrangler dev",
     "start": "wrangler dev",
-    "types": "wrangler types",
+    "types": "wrangler types --strict-vars=false",
     "typecheck": "tsc --noEmit"
   },
   "dependencies": {