fix: Update search-server references from .mjs to .cjs to match actual build output

- Update plugin/.mcp.json to reference search-server.cjs
- Update docs/public/configuration.mdx to reference search-server.cjs
- Update docs/public/development.mdx to reference search-server.cjs
- Remove stale plugin/scripts/search-server.mjs file

Co-authored-by: thedotmack <683968+thedotmack@users.noreply.github.com>

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "claude-mem",
-  "version": "6.3.6",
+  "version": "6.4.9",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "claude-mem",
-      "version": "6.3.6",
+      "version": "6.4.9",
       "license": "AGPL-3.0",
       "dependencies": {
         "@anthropic-ai/claude-agent-sdk": "^0.1.27",
@@ -1484,7 +1484,6 @@
       "integrity": "sha512-RFA/bURkcKzx/X9oumPG9Vp3D3JUgus/d0b67KB0t5S/raciymilkOa66olh78MUI92QLbEJevO7rvqU/kjwKA==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@types/prop-types": "*",
         "csstype": "^3.0.2"
@@ -2338,7 +2337,6 @@
       "resolved": "https://registry.npmjs.org/express/-/express-4.21.2.tgz",
       "integrity": "sha512-28HqgMZAmih1Czt9ny7qr6ek2qddF4FclbMzwhCREB6OFfH+rXAnuNCwo1/wFvrtbgsQDb4kSbX9de9lFbrXnA==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "accepts": "~1.3.8",
         "array-flatten": "1.1.1",
@@ -3851,7 +3849,6 @@
       "resolved": "https://registry.npmjs.org/react/-/react-18.3.1.tgz",
       "integrity": "sha512-wS+hAgJShR0KhEvPJArfuPVN1+Hz1t0Y6n5jLrGQbkb4urgPE/0Rve+1kMB1v/oWgHgm4WIcV+i7F2pTVj+2iQ==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "loose-envify": "^1.1.0"
       },
@@ -4853,7 +4850,6 @@
     "node_modules/zod": {
       "version": "3.25.76",
       "license": "MIT",
-      "peer": true,
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"
       }