chore(release): bump claude-mem to 13.0.0

Major version bump following PR #2351 merge — server-beta runtime,
Postgres observation storage, BullMQ queue engine, and Apache 2.0
relicense are now on main.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

plugin/.claude-plugin/plugin.json

@@ -1,6 +1,6 @@
 {
   "name": "claude-mem",
-  "version": "12.7.5",
+  "version": "13.0.0",
   "description": "Memory compression system for Claude Code - persist context across sessions",
   "author": {
     "name": "Alex Newman"

plugin/.codex-plugin/plugin.json

@@ -1,6 +1,6 @@
 {
   "name": "claude-mem",
-  "version": "12.7.5",
+  "version": "13.0.0",
   "description": "Memory compression system for Claude Code - persist context across sessions",
   "author": {
     "name": "Alex Newman",

plugin/package.json

@@ -1,6 +1,6 @@
 {
   "name": "claude-mem-plugin",
-  "version": "12.7.5",
+  "version": "13.0.0",
   "private": true,
   "description": "Runtime dependencies for claude-mem bundled hooks",
   "type": "module",