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Kyle Carberry
992b1ffed1
## Overview Split from #26466, scoped to **agent-only** changes. This PR exposes the agent's context sources and snapshots over the existing agent socket. There are no changes outside `agent/`. ## What's included - **agentsocket**: context source CRUD (`ContextSources`, `GetContextSource`, `AddContextSource`, `RemoveContextSource`) plus `GetContextSnapshot` and `ResyncContext` RPCs, with matching client methods and proto. The server receives the context `Manager` via `WithContextManager` and returns a clean error when it is absent. - **agentcontext**: the resync JSON response now carries the per-resource `Name`, keeping the HTTP resync payload in sync with the drpc `PushContextState` path in `agentsocket`. - **agent**: passes the context `Manager` to the socket server via `WithContextManager`. ## What's intentionally NOT here - No MCP wiring. There are no MCP additions in `agent.go` or `agentcontext`. MCP ownership will land later in `agentcontext`; this PR does not build on `agent/x/agentmcp`. - No changes to `agent/x/agentmcp` or the `agentcontext` resolver. The socket serves whatever context resources the `Manager` already resolves. <details> <summary>Context for reviewers</summary> This is one of several PRs split out of #26466. Earlier revisions also wired live MCP servers through the socket; that scope was removed so this PR stays purely socket + context plumbing inside `agent/`. The agentcontext resolver, `agent/x/agentmcp`, and `agent.go` MCP startup behavior are unchanged from `main`. </details> --- _Created by Coder Agents on behalf of @kylecarbs._