chore(deps): update node docker tag to v26

Reviewed-on: #23

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:24-trixie
+FROM node:26-trixie
 
 ENV NPM_CONFIG_UPDATE_NOTIFIER=false \
   NPM_CONFIG_LOGLEVEL=warn \
@@ -12,7 +12,7 @@ RUN apt-get update && \
     groupadd -g 1000 opencode; \
     useradd -m -u 1000 -g 1000 -s /usr/bin/bash opencode; \
     npm update -g --no-fund --no-audit && \
-    npm install -g --no-fund --no-audit --allow-scripts=opencode-ai,better-sqlite3 opencode-ai@1.17.13 n2-soul@9.0.9 && \
+    npm install -g --no-fund --no-audit --allow-scripts=opencode-ai,better-sqlite3 opencode-ai@1.17.18 n2-soul@9.0.9 && \
     npm cache clean --force && \
     chown -R 1000:1000 /usr/local/lib/node_modules/n2-soul/