feat(plugins): share native session handoff and soften memory search

docs/integrations/antigravity.mdx

@@ -5,7 +5,7 @@ description: "Add persistent memory to Google Antigravity with the Mem0 plugin:
 
 Add persistent memory to [**Google Antigravity**](https://antigravity.google) (`agy` CLI and Desktop IDE) with the Mem0 plugin. The plugin captures completed work, and Antigravity can search those memories in later sessions.
 
-<Info>Current plugin version: `0.3.1`.</Info>
+<Info>Current plugin version: `0.4.0`.</Info>
 
 ## Prerequisites
 
@@ -112,6 +112,10 @@ The local `search_memories` tool accepts `query`, `top_k`, `category`, `scope` (
 
 Captured prompts and responses retain their full redacted text without a per-message character cutoff. Large extraction inputs are split across requests without dropping message text; recall output and tool-result previews have separate limits.
 
+## Session handoff
+
+The plugin can hand off supported native session context into a new Codex task through the shared importer. Handoff requires Python 3.11+ and a locally installed, signed-in Codex CLI. See [session handoff](/integrations/session-handoff) for commands, transferred content, and recovery.
+
 ## Troubleshooting
 
 - **No tools appearing**: Restart your Antigravity session after installation