docs: correct surviving package and service references

packages/README.md

@@ -62,6 +62,7 @@ Every package lives in exactly one group; new packages join existing groups, and
 | [`guard/`](guard/README.md) | Loop-hygiene guards: advisory repeat-call reminders + the `tools/execute` deadline enforcer |
 | [`bundle/`](bundle/README.md) | Installable `dsh --profile` patch layers |
 | [`extensions/`](extensions/README.md) | Agent runtime self-modification: live plugin/service inspection and model-written mount/unmount |
+| [`mcp/`](mcp/README.md) | External Model Context Protocol servers exposed as native tools |
 | [`hooks/`](hooks/README.md) | Hook bridges + the shared Claude Code / Codex wire-protocol library |
 | [`session/`](session/README.md) | Durable session data plane: persistence seam + backends, projection seam, log-backed titles, session reporting |
 | [`session-query/`](session-query/README.md) | Session retrieval family: logical corpus, bounded reads, lineage, semantic filtering, SQLite full-text search |
@@ -75,7 +76,7 @@ Every package lives in exactly one group; new packages join existing groups, and
 | [`boot/`](boot/README.md) | Shared app-bin boot glue |
 | [`host/`](host/README.md) | Web-GUI host half: API gateway + HTTP route server |
 | [`client/`](client/README.md) | Web-GUI browser half: shell, wire, object services, slots, `ui-*` plugins |
-| [`test-support/`](test-support/README.md) | Support infrastructure (testkits, invariants, replay, Loader smokes) |
+| [`test-support/`](test-support/README.md) | Test infrastructure (testkits, replay, Loader smokes) |
 | [`runtime-diagnostics/`](runtime-diagnostics/README.md) | Runtime diagnostics: package-owned invariant checks and reports |
 | [`util/`](util/README.md) | Low-level zero-dependency utilities shared across groups (`Branded<B>`, home/path helpers, timeout, retention) |