fix(rvf-solver): include WASM binary in npm tarball, fix ESM phantom entry

- Add pkg/.npmignore to override pkg/.gitignore (which had `*` blocking
  all files from npm pack)
- Remove phantom dist/index.mjs ESM entry point (file never existed)
- Fix README: max concurrent instances is 7, not 8
- Publish as v0.1.5 with working WASM (135 KB + 172 KB)

Co-Authored-By: claude-flow <ruv@ruv.net>

npm/packages/rvf-solver/README.md

@@ -66,7 +66,7 @@ solver.destroy();
 
 ### `RvfSolver.create(): Promise<RvfSolver>`
 
-Creates a new solver instance. Initializes the WASM module on the first call; subsequent calls reuse the loaded module. Up to 8 concurrent instances are supported.
+Creates a new solver instance. Initializes the WASM module on the first call; subsequent calls reuse the loaded module. Up to 7 concurrent instances are supported.
 
 ```typescript
 const solver = await RvfSolver.create();

npm/packages/rvf-solver/package.json

@@ -1,15 +1,14 @@
 {
   "name": "@ruvector/rvf-solver",
-  "version": "0.1.4",
+  "version": "0.1.5",
   "description": "RVF self-learning temporal solver — Thompson Sampling, PolicyKernel, ReasoningBank",
   "main": "dist/index.js",
-  "module": "dist/index.mjs",
   "types": "dist/index.d.ts",
   "exports": {
     ".": {
       "types": "./dist/index.d.ts",
-      "import": "./dist/index.mjs",
-      "require": "./dist/index.js"
+      "require": "./dist/index.js",
+      "default": "./dist/index.js"
     }
   },
   "files": ["dist/", "pkg/", "package.json"],

npm/packages/rvf-solver/pkg/.npmignore

@@ -0,0 +1,2 @@
+# Allow all files to be included in npm package
+# (overrides .gitignore which blocks everything)