diff --git a/Cargo.lock b/Cargo.lock
index 58e9b55..d4c9e66 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4487,6 +4487,7 @@ dependencies = [
  "hkdf",
  "humantime-serde",
  "iroh",
+ "meshservice",
  "quicprochat-core",
  "rand 0.8.5",
  "serde",
diff --git a/README.md b/README.md
index 7ac41a2..0e76c9a 100644
--- a/README.md
+++ b/README.md
@@ -84,6 +84,7 @@ quicprochat/
 │   ├── quicprochat-client       # CLI + REPL + TUI (Ratatui)
 │   ├── quicprochat-kt           # Key transparency (Merkle-log, revocation)
 │   ├── quicprochat-p2p          # iroh P2P, mesh identity, store-and-forward
+│   ├── meshservice              # Decentralized service layer (FAPP, housing, wire format)
 │   ├── quicprochat-ffi          # C FFI (libquicprochat_ffi.so)
 │   └── quicprochat-plugin-api   # Dynamic plugin hooks (C ABI)
 ├── proto/qpc/v1/               # 15 .proto schema files
diff --git a/crates/meshservice/README.md b/crates/meshservice/README.md
index 6c7648d..48c86b7 100644
--- a/crates/meshservice/README.md
+++ b/crates/meshservice/README.md
@@ -19,6 +19,19 @@ A generic decentralized service layer for mesh networks. Build any peer-to-peer
 └─────────────────────────────────────────────────────────────┘
 ```
 
+## QuicProChat / quicprochat-p2p
+
+This crate lives in the **product.quicproquo** workspace. Integration with the mesh stack:
+
+- **Ed25519 seed**: `MeshIdentity::seed_bytes()` matches `ServiceIdentity::from_secret(&seed)` (same `ed25519-dalek` derivation as `quicprochat_core::IdentityKeypair`); truncated mesh address is SHA-256(pubkey)[0..16] in both layers.
+- **Example transport**: integration test `crates/quicprochat-p2p/tests/meshservice_tcp_transport.rs` sends `wire::encode(ServiceMessage)` over `TcpTransport` (length-prefixed framing). For iroh/production, embed the same bytes in `MeshEnvelope` on ALPN `quicprochat/mesh/1`.
+
+Run the test from the repo root:
+
+```bash
+cargo test -p quicprochat-p2p --test meshservice_tcp_transport
+```
+
 ## Features
 
 - **Generic Protocol**: Any service can be built on top (therapy appointments, housing, repairs, tutoring...)
diff --git a/crates/quicprochat-client/src/client/command_engine.rs b/crates/quicprochat-client/src/client/command_engine.rs
index 9c0a688..63ea6f8 100644
--- a/crates/quicprochat-client/src/client/command_engine.rs
+++ b/crates/quicprochat-client/src/client/command_engine.rs
@@ -119,6 +119,8 @@ pub enum Command {
     MeshRoute,
     MeshIdentity,
     MeshStore,
+    MeshTrace { address: String },
+    MeshStats,
 
     // Security / crypto
     Verify { username: String },
@@ -187,6 +189,8 @@ impl Command {
             Command::MeshRoute => Some(SlashCommand::MeshRoute),
             Command::MeshIdentity => Some(SlashCommand::MeshIdentity),
             Command::MeshStore => Some(SlashCommand::MeshStore),
+            Command::MeshTrace { address } => Some(SlashCommand::MeshTrace { address }),
+            Command::MeshStats => Some(SlashCommand::MeshStats),
             Command::Verify { username } => Some(SlashCommand::Verify { username }),
             Command::UpdateKey => Some(SlashCommand::UpdateKey),
             Command::Typing => Some(SlashCommand::Typing),
@@ -348,6 +352,8 @@ fn slash_to_command(sc: SlashCommand) -> Command {
         SlashCommand::MeshRoute => Command::MeshRoute,
         SlashCommand::MeshIdentity => Command::MeshIdentity,
         SlashCommand::MeshStore => Command::MeshStore,
+        SlashCommand::MeshTrace { address } => Command::MeshTrace { address },
+        SlashCommand::MeshStats => Command::MeshStats,
         SlashCommand::Verify { username } => Command::Verify { username },
         SlashCommand::UpdateKey => Command::UpdateKey,
         SlashCommand::Typing => Command::Typing,
@@ -415,6 +421,8 @@ async fn execute_slash(
         SlashCommand::MeshRoute => cmd_mesh_route(session),
         SlashCommand::MeshIdentity => cmd_mesh_identity(session),
         SlashCommand::MeshStore => cmd_mesh_store(session),
+        SlashCommand::MeshTrace { address } => cmd_mesh_trace(session, &address),
+        SlashCommand::MeshStats => cmd_mesh_stats(session),
         SlashCommand::Verify { username } => cmd_verify(session, client, &username).await,
         SlashCommand::UpdateKey => cmd_update_key(session, client).await,
         SlashCommand::Typing => cmd_typing(session, client).await,
diff --git a/crates/quicprochat-client/src/client/playbook.rs b/crates/quicprochat-client/src/client/playbook.rs
index 1716bff..2b7234b 100644
--- a/crates/quicprochat-client/src/client/playbook.rs
+++ b/crates/quicprochat-client/src/client/playbook.rs
@@ -434,6 +434,10 @@ impl PlaybookRunner {
             "mesh-route" => Ok(Command::MeshRoute),
             "mesh-identity" | "mesh-id" => Ok(Command::MeshIdentity),
             "mesh-store" => Ok(Command::MeshStore),
+            "mesh-trace" => Ok(Command::MeshTrace {
+                address: self.resolve_str(&step.args, "address")?,
+            }),
+            "mesh-stats" => Ok(Command::MeshStats),
 
             other => bail!("unknown command: {other}"),
         }
diff --git a/crates/quicprochat-p2p/Cargo.toml b/crates/quicprochat-p2p/Cargo.toml
index 73c5d61..ab49fd7 100644
--- a/crates/quicprochat-p2p/Cargo.toml
+++ b/crates/quicprochat-p2p/Cargo.toml
@@ -43,6 +43,7 @@ humantime-serde  = "1"
 
 [dev-dependencies]
 tempfile = "3"
+meshservice = { path = "../meshservice" }
 
 [[example]]
 name = "fapp_demo"
diff --git a/crates/quicprochat-p2p/tests/meshservice_tcp_transport.rs b/crates/quicprochat-p2p/tests/meshservice_tcp_transport.rs
new file mode 100644
index 0000000..3462bd1
--- /dev/null
+++ b/crates/quicprochat-p2p/tests/meshservice_tcp_transport.rs
@@ -0,0 +1,73 @@
+//! Integration: [`meshservice`] wire payloads over [`quicprochat_p2p::transport_tcp::TcpTransport`].
+//!
+//! Demonstrates that the same Ed25519 seed backs both [`MeshIdentity`] (P2P) and
+//! [`meshservice::identity::ServiceIdentity`], so service-layer signatures verify after
+//! hop-across-TCP. Production mesh would use [`MeshEnvelope`] / iroh; this test keeps
+//! the transport boundary explicit.
+
+use meshservice::capabilities;
+use meshservice::identity::ServiceIdentity;
+use meshservice::router::ServiceRouter;
+use meshservice::services::fapp::{create_announce, FappService, Modality, SlotAnnounce, Specialism};
+use meshservice::wire;
+use quicprochat_p2p::address::MeshAddress;
+use quicprochat_p2p::identity::MeshIdentity;
+use quicprochat_p2p::transport::MeshTransport;
+use quicprochat_p2p::transport_tcp::TcpTransport;
+
+#[tokio::test]
+async fn meshservice_fapp_over_tcp_roundtrip() {
+    let seed = [0x5eu8; 32];
+    let mesh = MeshIdentity::from_seed(seed);
+    let service = ServiceIdentity::from_secret(&seed);
+
+    assert_eq!(mesh.public_key(), service.public_key());
+    assert_eq!(
+        *MeshAddress::from_public_key(&mesh.public_key()).as_bytes(),
+        service.address()
+    );
+
+    let announce = SlotAnnounce::new(
+        &[Specialism::CognitiveBehavioral],
+        Modality::VideoCall,
+        "803",
+    )
+    .with_slots(2);
+
+    let msg = create_announce(&service, &announce, 1).expect("create_announce");
+    let frame = wire::encode(&msg).expect("wire encode");
+
+    let transport = TcpTransport::bind("127.0.0.1:0")
+        .await
+        .expect("bind tcp");
+    let dest = transport.transport_addr();
+
+    let recv = tokio::spawn(async move { transport.recv().await.expect("recv") });
+    let send_transport = TcpTransport::bind("127.0.0.1:0")
+        .await
+        .expect("bind sender");
+    send_transport
+        .send(&dest, &frame)
+        .await
+        .expect("send");
+
+    let packet = recv.await.expect("join recv");
+    let decoded = wire::decode(&packet.data).expect("wire decode");
+    assert!(decoded.verify(&service.public_key()));
+    assert_eq!(decoded.service_id, meshservice::service_ids::FAPP);
+
+    let mut router = ServiceRouter::new(capabilities::RELAY);
+    router.register(Box::new(FappService::relay()));
+    let action = router
+        .handle(decoded, Some(service.public_key()))
+        .expect("router handle");
+    assert!(
+        matches!(
+            action,
+            meshservice::router::ServiceAction::Store
+                | meshservice::router::ServiceAction::StoreAndForward
+        ),
+        "unexpected action: {action:?}"
+    );
+    assert!(!router.store().is_empty());
+}
diff --git a/docs/status.md b/docs/status.md
index 167c38e..a204eda 100644
--- a/docs/status.md
+++ b/docs/status.md
@@ -1,5 +1,18 @@
 # Status Log
 
+## 2026-04-01 — meshservice workspace integration
+
+### Completed
+- **Workspace** — `crates/meshservice/` is a workspace member (`Cargo.toml`); `cargo check -p meshservice` and full `cargo check --workspace` succeed.
+- **P2P bridge test** — `crates/quicprochat-p2p/tests/meshservice_tcp_transport.rs`: same Ed25519 seed for `MeshIdentity` and `meshservice::ServiceIdentity`; FAPP announce encoded with `meshservice::wire`, sent over `TcpTransport`, decoded and handled by `ServiceRouter` + `FappService::relay()`.
+- **Client command engine** — `SlashCommand::MeshTrace` / `MeshStats` wired through `Command` and `execute_slash` (fixes non-exhaustive match); playbook steps `mesh-trace` / `mesh-stats` added.
+
+### Integration notes
+- **Transport**: `meshservice` is transport-agnostic; carry `wire::encode` bytes inside `MeshEnvelope` / mesh ALPN (`quicprochat/mesh/1`) for production — not yet a direct dependency from `quicprochat-p2p` lib code.
+- **FAPP duplication**: `quicprochat-p2p::fapp` (legacy mesh FAPP) and `meshservice::services::fapp` (generic service layer) coexist; long-term alignment TBD.
+
+---
+
 ## 2026-04-01 — Production Infrastructure Sprint
 
 ### Completed