chore(cli): bump to v0.2.5 + changelog + ruff format fix

- Python: 0.2.4 → 0.2.5 in cli/python/pyproject.toml
- Node:   0.2.4 → 0.2.5 in cli/node/package.json
- docs/changelog/sdk.mdx: new CLI v0.2.5 entry (Agent Mode bootstrap,
  --agent-caller, mem0 identify, plugin sync, claim flow, pingKey fix,
  rate-limit clarity, JSON envelope command field, envelope validation)
- CI fix: ruff format applied to config.py + test_init_internals.py

Release flow: merge → tag cli-v0.2.5 (Python CD) and cli-node-v0.2.5
(Node CD) on GitHub Releases. OIDC trusted publishing — no tokens needed.

cli/node/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@mem0/cli",
-  "version": "0.2.4",
+  "version": "0.2.5",
   "description": "The official CLI for mem0 — the memory layer for AI agents",
   "type": "module",
   "bin": {