Merge remote-tracking branch 'origin/main' into feat/session-handoff-plugins

# Conflicts:
#	docs/llms.txt
#	integrations/agent-plugin-core/tests/test_build.py
#	integrations/antigravity-plugin/agents/sidekick/agent.md
#	integrations/cursor-plugin/agents/sidekick.md
#	integrations/kimi-plugin/agents/sidekick.md
#	integrations/opencode-plugin/README.md
#	integrations/pi-agent-plugin/README.md

docs/integrations/antigravity.mdx

@@ -9,6 +9,8 @@ Add persistent memory to [**Google Antigravity**](https://antigravity.google) (`
 
 The explicit `handoff` skill saves session context as a shared local resource in `~/.mem0/handoffs/`. Ask the agent to use `handoff_resource` to list the current project’s resources or resume a saved path from any Mem0 plugin. Requires Python 3.11+; the shared engine is downloaded and verified on first use, then cached.
 
+Sidekick is available only in the [Claude Code plugin](/integrations/claude-code#sidekick-agent).
+
 ## Prerequisites
 
 1. A Mem0 API key (starts with `m0-`):
@@ -50,11 +52,10 @@ This installs the generated Antigravity bundle with the Mem0 server, lifecycle h
 | Local MCP Server (`search_memories`) | Yes |
 | Lifecycle Hooks | Yes |
 | 6 Memory Skills | Yes |
-| Sidekick Agent | Yes |
 
 ## Memory tools and skills
 
-The full plugin exposes a focused `search_memories` tool and captures completed work through lifecycle hooks. Six skills provide search, status, remember, forget, pause, and resume workflows. A native sidekick can handle a bounded task in the workspace assigned by Antigravity; it does not claim Claude Code worktree isolation.
+The full plugin exposes a focused `search_memories` tool and captures completed work through lifecycle hooks. Six skills provide search, status, remember, forget, pause, and resume workflows.
 
 If you need the full set of direct CRUD tools, connect the [hosted Mem0 MCP server](/platform/mem0-mcp) separately instead of installing both configurations under the same server name.