Publish v0.1.8 so package metadata matches the latest initialization fix

Bump package metadata to 0.1.8 for the read-only auto-prepare change
that prevents early `.flow` side effects before first write.

Constraint: Release workflow and package metadata must stay in sync
Rejected: Reuse v0.1.7 tag/version | would ship new behavior under stale version metadata
Confidence: high
Scope-risk: narrow
Reversibility: clean
Directive: Keep package.json version aligned with release tag for every published fix
Tested: bun run check
Not-tested: Manual install via release scripts after GitHub release publication

Author: vriesdcrv

package.json

@@ -1,6 +1,6 @@
 {
   "name": "opencode-plugin-flow",
-  "version": "0.1.7",
+  "version": "0.1.8",
   "description": "Stateful planning and execution workflow plugin for OpenCode",
   "type": "module",
   "main": "dist/index.js",