diff --git a/crates/manager-core/tests/migration_queue_messages.rs b/crates/manager-core/tests/migration_queue_messages.rs
new file mode 100644
index 0000000..74c9492
--- /dev/null
+++ b/crates/manager-core/tests/migration_queue_messages.rs
@@ -0,0 +1,150 @@
+//! v1.1.9 migration smoke test: applies all manager-core migrations to
+//! `DATABASE_URL` and verifies the `queue_messages` + `queue_trigger_details`
+//! shape (table existence, columns, partial indexes). Skips cleanly when
+//! `DATABASE_URL` is unset.
+//!
+//! Heavier schema assertions live in the schema_snapshot golden — this
+//! test is a quick gate for the migration itself + an easy place to
+//! exercise the partial-index conditions.
+
+#![allow(clippy::needless_pass_by_value)]
+
+use sqlx::postgres::PgPoolOptions;
+use sqlx::PgPool;
+
+async fn pool_or_skip() -> Option<PgPool> {
+    let Ok(url) = std::env::var("DATABASE_URL") else {
+        eprintln!("migration_queue_messages: DATABASE_URL unset — skipping");
+        return None;
+    };
+    let pool = PgPoolOptions::new()
+        .max_connections(2)
+        .connect(&url)
+        .await
+        .expect("connect to DATABASE_URL");
+    sqlx::migrate!("./migrations")
+        .run(&pool)
+        .await
+        .expect("apply migrations");
+    Some(pool)
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn queue_messages_table_exists_with_expected_columns() {
+    let Some(pool) = pool_or_skip().await else { return };
+    let rows: Vec<(String, String, String)> = sqlx::query_as(
+        "SELECT column_name, data_type, is_nullable \
+         FROM information_schema.columns \
+         WHERE table_name = 'queue_messages' \
+         ORDER BY ordinal_position",
+    )
+    .fetch_all(&pool)
+    .await
+    .expect("column read");
+
+    let names: Vec<&str> = rows.iter().map(|(n, _, _)| n.as_str()).collect();
+    for required in [
+        "id",
+        "app_id",
+        "queue_name",
+        "payload",
+        "enqueued_at",
+        "deliver_after",
+        "claim_token",
+        "claimed_at",
+        "attempt",
+        "max_attempts",
+        "enqueued_by_principal",
+    ] {
+        assert!(
+            names.contains(&required),
+            "queue_messages should have column {required}, columns are {names:?}"
+        );
+    }
+
+    // Verify nullability on the right columns.
+    let nullable: std::collections::HashMap<String, String> = rows
+        .into_iter()
+        .map(|(n, _, nl)| (n, nl))
+        .collect();
+    assert_eq!(nullable["app_id"], "NO");
+    assert_eq!(nullable["queue_name"], "NO");
+    assert_eq!(nullable["payload"], "NO");
+    assert_eq!(nullable["claim_token"], "YES");
+    assert_eq!(nullable["deliver_after"], "YES");
+    assert_eq!(nullable["enqueued_by_principal"], "YES");
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn queue_trigger_details_table_exists() {
+    let Some(pool) = pool_or_skip().await else { return };
+    let rows: Vec<(String,)> = sqlx::query_as(
+        "SELECT column_name FROM information_schema.columns \
+         WHERE table_name = 'queue_trigger_details' \
+         ORDER BY ordinal_position",
+    )
+    .fetch_all(&pool)
+    .await
+    .expect("read");
+    let names: Vec<&str> = rows.iter().map(|(n,)| n.as_str()).collect();
+    for required in ["trigger_id", "queue_name", "visibility_timeout_secs", "last_fired_at"] {
+        assert!(
+            names.contains(&required),
+            "queue_trigger_details should have {required}, columns are {names:?}"
+        );
+    }
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn queue_widens_trigger_kind_and_outbox_source_kind() {
+    let Some(pool) = pool_or_skip().await else { return };
+    // The triggers.kind constraint must accept 'queue'.
+    sqlx::query(
+        "DO $$ BEGIN PERFORM 1 FROM pg_constraint WHERE conname = 'triggers_kind_check'; END $$;",
+    )
+    .execute(&pool)
+    .await
+    .expect("constraint exists");
+
+    let (def,): (String,) = sqlx::query_as(
+        "SELECT pg_get_constraintdef(oid) FROM pg_constraint \
+         WHERE conname = 'triggers_kind_check'",
+    )
+    .fetch_one(&pool)
+    .await
+    .expect("read constraint");
+    assert!(
+        def.contains("'queue'"),
+        "triggers_kind_check should admit 'queue', got: {def}"
+    );
+
+    let (outbox_def,): (String,) = sqlx::query_as(
+        "SELECT pg_get_constraintdef(oid) FROM pg_constraint \
+         WHERE conname = 'outbox_source_kind_check'",
+    )
+    .fetch_one(&pool)
+    .await
+    .expect("read constraint");
+    assert!(
+        outbox_def.contains("'invoke'"),
+        "outbox_source_kind_check should admit 'invoke', got: {outbox_def}"
+    );
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn queue_messages_dispatch_index_is_partial() {
+    let Some(pool) = pool_or_skip().await else { return };
+    let (defn,): (String,) = sqlx::query_as(
+        "SELECT indexdef FROM pg_indexes \
+         WHERE indexname = 'idx_queue_messages_dispatch'",
+    )
+    .fetch_one(&pool)
+    .await
+    .expect("read index");
+    // Partial WHERE (claim_token IS NULL) is the key feature; assert
+    // it's there so a future migration can't quietly drop it.
+    assert!(
+        defn.contains("claim_token IS NULL"),
+        "idx_queue_messages_dispatch should be partial on claim_token IS NULL, got: {defn}"
+    );
+}
diff --git a/crates/picloud/tests/invoke_e2e.rs b/crates/picloud/tests/invoke_e2e.rs
new file mode 100644
index 0000000..31fb0d0
--- /dev/null
+++ b/crates/picloud/tests/invoke_e2e.rs
@@ -0,0 +1,261 @@
+//! v1.1.9 invoke end-to-end tests. invoke()/invoke_async() are
+//! exercised against the full all-in-one app via build_app, so the
+//! invoke service + Engine back-reference + InvokeServiceImpl all
+//! participate.
+//!
+//! Skips when DATABASE_URL is unset.
+
+#![allow(clippy::needless_pass_by_value)]
+
+use std::time::Duration;
+
+use axum_test::TestServer;
+use serde_json::{json, Value};
+use sqlx::postgres::PgPoolOptions;
+use sqlx::PgPool;
+use uuid::Uuid;
+
+async fn pool_or_skip() -> Option<PgPool> {
+    let Ok(url) = std::env::var("DATABASE_URL") else {
+        eprintln!("invoke_e2e: DATABASE_URL unset — skipping");
+        return None;
+    };
+    let pool = PgPoolOptions::new()
+        .max_connections(5)
+        .connect(&url)
+        .await
+        .expect("connect to DATABASE_URL");
+    sqlx::migrate!("../manager-core/migrations")
+        .run(&pool)
+        .await
+        .expect("apply migrations");
+    Some(pool)
+}
+
+async fn server_for(pool: PgPool, suffix: &str) -> (TestServer, String) {
+    use picloud_manager_core::auth::hash_password;
+    use picloud_shared::InstanceRole;
+
+    let unique = format!("{suffix}-{}", Uuid::new_v4().simple());
+    let auth = picloud::AuthDeps::from_pool(pool.clone());
+    let username = format!("e2e-{unique}");
+    let hash = hash_password("pw").expect("hash");
+    auth.users
+        .create(&username, &hash, InstanceRole::Owner, None)
+        .await
+        .expect("seed admin");
+
+    let app = picloud::build_app(
+        pool,
+        auth,
+        picloud_shared::MasterKey::from_bytes([0x42u8; 32]),
+    )
+    .await
+    .expect("build_app");
+    let mut server = TestServer::new(app).expect("TestServer");
+    let resp = server
+        .post("/api/v1/admin/auth/login")
+        .json(&json!({ "username": username, "password": "pw" }))
+        .await;
+    resp.assert_status_ok();
+    let token = resp.json::<Value>()["token"]
+        .as_str()
+        .expect("login token")
+        .to_string();
+    server.add_header("authorization", format!("Bearer {token}"));
+
+    let slug = format!("e2e-{unique}");
+    let created: Value = server
+        .post("/api/v1/admin/apps")
+        .json(&json!({ "slug": slug, "name": slug }))
+        .await
+        .json();
+    let app_id = created["id"].as_str().expect("app id").to_string();
+    (server, app_id)
+}
+
+async fn create_script(server: &TestServer, app_id: &str, name: &str, source: &str) -> String {
+    let created: Value = server
+        .post("/api/v1/admin/scripts")
+        .json(&json!({ "app_id": app_id, "name": name, "source": source }))
+        .await
+        .json();
+    created["id"].as_str().expect("script id").to_string()
+}
+
+/// Create a route bound to a script so we can invoke it via HTTP (and
+/// any script can invoke() by route path).
+async fn create_route(server: &TestServer, app_id: &str, script_id: &str, path: &str) {
+    let resp = server
+        .post(&format!("/api/v1/admin/apps/{app_id}/routes"))
+        .json(&json!({
+            "script_id": script_id,
+            "method": "GET",
+            "path": path,
+            "host": null,
+            "dispatch_mode": "sync"
+        }))
+        .await;
+    resp.assert_status(axum::http::StatusCode::CREATED);
+}
+
+async fn poll_marker(pool: &PgPool, app_id: &str) -> Option<Value> {
+    for _ in 0..150 {
+        let row: Option<(Value,)> = sqlx::query_as(
+            "SELECT value FROM kv_entries WHERE app_id = $1 \
+             AND collection = 'e2e_markers' AND key = 'marker'",
+        )
+        .bind(Uuid::parse_str(app_id).expect("uuid"))
+        .fetch_optional(pool)
+        .await
+        .expect("kv read");
+        if let Some((v,)) = row {
+            return Some(v);
+        }
+        tokio::time::sleep(Duration::from_millis(100)).await;
+    }
+    None
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 4)]
+async fn invoke_by_name_same_app_returns_value() {
+    let Some(pool) = pool_or_skip().await else { return };
+    let (server, app_id) = server_for(pool.clone(), "invoke-name").await;
+
+    // Callee: returns its body's `x` + 1 as the response body.
+    create_script(
+        &server,
+        &app_id,
+        "callee",
+        r#"#{ statusCode: 200, body: ctx.request.body.x + 1 }"#,
+    )
+    .await;
+
+    // Caller: invokes by name, writes result to KV marker.
+    let caller = create_script(
+        &server,
+        &app_id,
+        "caller",
+        r#"
+            let r = invoke("callee", #{ x: 41 });
+            kv::collection("e2e_markers").set("marker", #{ r: r });
+            #{ statusCode: 200 }
+        "#,
+    )
+    .await;
+    create_route(&server, &app_id, &caller, "/caller").await;
+
+    let resp = server.get("/caller").await;
+    resp.assert_status_ok();
+
+    let marker = poll_marker(&pool, &app_id).await.expect("marker fired");
+    assert_eq!(marker["r"], 42);
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 4)]
+async fn invoke_cross_app_rejects() {
+    let Some(pool) = pool_or_skip().await else { return };
+    let (server, app_a) = server_for(pool.clone(), "invoke-A").await;
+    let (_, app_b) = server_for(pool.clone(), "invoke-B").await;
+
+    // Callee lives in app_b.
+    let callee_b = create_script(
+        &server,
+        &app_b,
+        "callee_b",
+        r#"#{ statusCode: 200, body: 0 }"#,
+    )
+    .await;
+
+    // Caller in app_a tries to invoke callee_b by id; must reject.
+    let caller_src = format!(
+        r#"
+            let err = "no error";
+            try {{
+                invoke("{callee_b}", #{{}});
+            }} catch(e) {{
+                err = e;
+            }}
+            kv::collection("e2e_markers").set("marker", #{{ err: err }});
+            #{{ statusCode: 200 }}
+        "#
+    );
+    let caller_a = create_script(&server, &app_a, "caller_a", &caller_src).await;
+    create_route(&server, &app_a, &caller_a, "/x").await;
+
+    server.get("/x").await.assert_status_ok();
+
+    let marker = poll_marker(&pool, &app_a).await.expect("marker fired");
+    let err_str = marker["err"].as_str().unwrap_or_default();
+    assert!(
+        err_str.contains("different app")
+            || err_str.contains("CrossApp")
+            || err_str.contains("not found"),
+        "expected cross-app or not-found rejection, got: {err_str}"
+    );
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 4)]
+async fn invoke_depth_limit_exceeds_cleanly() {
+    let Some(pool) = pool_or_skip().await else { return };
+    let (server, app_id) = server_for(pool.clone(), "invoke-depth").await;
+
+    // Recursive script — invoke itself by name; loop bounded by
+    // Limits::trigger_depth_max (default 8). Records the error string.
+    let recurser_src = r#"
+        let err = "ok";
+        try {
+            invoke("recurser", #{});
+        } catch(e) {
+            err = e;
+        }
+        kv::collection("e2e_markers").set("marker", #{ err: err });
+        #{ statusCode: 200 }
+    "#;
+    let recurser = create_script(&server, &app_id, "recurser", recurser_src).await;
+    create_route(&server, &app_id, &recurser, "/recurse").await;
+
+    server.get("/recurse").await.assert_status_ok();
+
+    let marker = poll_marker(&pool, &app_id).await.expect("marker fired");
+    let err = marker["err"].as_str().unwrap_or_default();
+    assert!(
+        err.contains("depth"),
+        "expected depth-limit error, got: {err}"
+    );
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 4)]
+async fn invoke_async_enqueues_outbox_row() {
+    let Some(pool) = pool_or_skip().await else { return };
+    let (server, app_id) = server_for(pool.clone(), "invoke-async").await;
+
+    // Callee writes a marker.
+    create_script(
+        &server,
+        &app_id,
+        "async_callee",
+        r#"
+            kv::collection("e2e_markers").set("marker", #{ from: "async" });
+            #{ statusCode: 200 }
+        "#,
+    )
+    .await;
+
+    let caller = create_script(
+        &server,
+        &app_id,
+        "async_caller",
+        r#"
+            let id = invoke_async("async_callee", #{});
+            #{ statusCode: 200, body: id }
+        "#,
+    )
+    .await;
+    create_route(&server, &app_id, &caller, "/start").await;
+    server.get("/start").await.assert_status_ok();
+
+    // Dispatcher fires the OutboxSourceKind::Invoke row → callee runs.
+    let marker = poll_marker(&pool, &app_id).await.expect("marker fired");
+    assert_eq!(marker["from"], "async");
+}
diff --git a/crates/picloud/tests/queue_e2e.rs b/crates/picloud/tests/queue_e2e.rs
new file mode 100644
index 0000000..87cb89a
--- /dev/null
+++ b/crates/picloud/tests/queue_e2e.rs
@@ -0,0 +1,337 @@
+//! v1.1.9 queue end-to-end tests.
+//!
+//! Wires the full all-in-one app via `build_app` (spawns the real
+//! dispatcher + queue arm + reclaim task), creates an app + a consumer
+//! script + a `queue:receive` trigger, enqueues messages through the
+//! admin path, and observes the handler's side effect via a KV marker.
+//!
+//! ## Gating
+//!
+//! Skips when `DATABASE_URL` is unset — mirrors `dispatcher_e2e.rs`.
+//!
+//! ## Handler observation
+//!
+//! Consumer handlers write `ctx.event` to a KV marker on a collection
+//! no trigger watches. Tests poll the marker for the expected attempt
+//! count / value.
+
+#![allow(clippy::needless_pass_by_value)]
+
+use std::time::Duration;
+
+use axum_test::TestServer;
+use serde_json::{json, Value};
+use sqlx::postgres::PgPoolOptions;
+use sqlx::PgPool;
+use uuid::Uuid;
+
+async fn pool_or_skip() -> Option<PgPool> {
+    let Ok(url) = std::env::var("DATABASE_URL") else {
+        eprintln!("queue_e2e: DATABASE_URL unset — skipping");
+        return None;
+    };
+    let pool = PgPoolOptions::new()
+        .max_connections(5)
+        .connect(&url)
+        .await
+        .expect("connect to DATABASE_URL");
+    sqlx::migrate!("../manager-core/migrations")
+        .run(&pool)
+        .await
+        .expect("apply migrations");
+    Some(pool)
+}
+
+async fn server_for(pool: PgPool, suffix: &str) -> (TestServer, String) {
+    use picloud_manager_core::auth::hash_password;
+    use picloud_shared::InstanceRole;
+
+    let unique = format!("{suffix}-{}", Uuid::new_v4().simple());
+    let auth = picloud::AuthDeps::from_pool(pool.clone());
+    let username = format!("e2e-{unique}");
+    let hash = hash_password("pw").expect("hash");
+    auth.users
+        .create(&username, &hash, InstanceRole::Owner, None)
+        .await
+        .expect("seed admin");
+
+    let app = picloud::build_app(
+        pool,
+        auth,
+        picloud_shared::MasterKey::from_bytes([0x42u8; 32]),
+    )
+    .await
+    .expect("build_app");
+    let mut server = TestServer::new(app).expect("TestServer");
+    let resp = server
+        .post("/api/v1/admin/auth/login")
+        .json(&json!({ "username": username, "password": "pw" }))
+        .await;
+    resp.assert_status_ok();
+    let token = resp.json::<Value>()["token"]
+        .as_str()
+        .expect("login token")
+        .to_string();
+    server.add_header("authorization", format!("Bearer {token}"));
+
+    let slug = format!("e2e-{unique}");
+    let created: Value = server
+        .post("/api/v1/admin/apps")
+        .json(&json!({ "slug": slug, "name": slug }))
+        .await
+        .json();
+    let app_id = created["id"].as_str().expect("app id").to_string();
+    (server, app_id)
+}
+
+async fn create_script(server: &TestServer, app_id: &str, name: &str, source: &str) -> String {
+    let created: Value = server
+        .post("/api/v1/admin/scripts")
+        .json(&json!({ "app_id": app_id, "name": name, "source": source }))
+        .await
+        .json();
+    created["id"].as_str().expect("script id").to_string()
+}
+
+/// The acker handler records ctx.event into KV and returns successfully.
+const ACK_HANDLER: &str = r#"
+    let e = ctx.event;
+    kv::collection("e2e_markers").set("marker", e);
+    #{ ok: true }
+"#;
+
+/// The throwing handler records its event and then throws — used to
+/// exercise nack → retry → dead-letter.
+const THROW_HANDLER: &str = r#"
+    let e = ctx.event;
+    kv::collection("e2e_markers").set("marker", e);
+    throw "boom"
+"#;
+
+async fn poll_marker(pool: &PgPool, app_id: &str) -> Option<Value> {
+    for _ in 0..200 {
+        let row: Option<(Value,)> = sqlx::query_as(
+            "SELECT value FROM kv_entries WHERE app_id = $1 \
+             AND collection = 'e2e_markers' AND key = 'marker'",
+        )
+        .bind(Uuid::parse_str(app_id).expect("uuid"))
+        .fetch_optional(pool)
+        .await
+        .expect("kv read");
+        if let Some((v,)) = row {
+            return Some(v);
+        }
+        tokio::time::sleep(Duration::from_millis(100)).await;
+    }
+    None
+}
+
+async fn count_queue_messages(pool: &PgPool, app_id: &str, queue: &str) -> i64 {
+    let (n,): (i64,) = sqlx::query_as(
+        "SELECT COUNT(*) FROM queue_messages WHERE app_id = $1 AND queue_name = $2",
+    )
+    .bind(Uuid::parse_str(app_id).expect("uuid"))
+    .bind(queue)
+    .fetch_one(pool)
+    .await
+    .expect("queue count");
+    n
+}
+
+async fn count_dead_letters_for_queue(pool: &PgPool, app_id: &str, queue: &str) -> i64 {
+    let (n,): (i64,) = sqlx::query_as(
+        "SELECT COUNT(*) FROM dead_letters \
+         WHERE app_id = $1 AND source = 'queue' \
+           AND payload->>'queue_name' = $2",
+    )
+    .bind(Uuid::parse_str(app_id).expect("uuid"))
+    .bind(queue)
+    .fetch_one(pool)
+    .await
+    .expect("dl count");
+    n
+}
+
+/// Helper: directly INSERT a queue message via SQL (no producer-script
+/// path). The producer script path is covered in invoke_e2e + the unit
+/// tests on the SDK bridge.
+async fn enqueue_directly(pool: &PgPool, app_id: &str, queue: &str, payload: Value) {
+    sqlx::query(
+        "INSERT INTO queue_messages (app_id, queue_name, payload, max_attempts) \
+         VALUES ($1, $2, $3, 3)",
+    )
+    .bind(Uuid::parse_str(app_id).expect("uuid"))
+    .bind(queue)
+    .bind(payload)
+    .execute(pool)
+    .await
+    .expect("enqueue");
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 4)]
+async fn queue_receive_acks_on_success() {
+    let Some(pool) = pool_or_skip().await else { return };
+    let (server, app_id) = server_for(pool.clone(), "ack").await;
+
+    let script_id = create_script(&server, &app_id, "worker", ACK_HANDLER).await;
+    let resp = server
+        .post(&format!("/api/v1/admin/apps/{app_id}/triggers/queue"))
+        .json(&json!({
+            "script_id": script_id,
+            "queue_name": "jobs",
+            "visibility_timeout_secs": 30
+        }))
+        .await;
+    resp.assert_status(axum::http::StatusCode::CREATED);
+
+    enqueue_directly(&pool, &app_id, "jobs", json!({ "x": 42 })).await;
+
+    let marker = poll_marker(&pool, &app_id)
+        .await
+        .expect("handler fired");
+    assert_eq!(marker["source"], "queue");
+    assert_eq!(marker["queue"]["queue_name"], "jobs");
+    assert_eq!(marker["queue"]["message"]["x"], 42);
+
+    // Ack deleted the row.
+    assert_eq!(count_queue_messages(&pool, &app_id, "jobs").await, 0);
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 4)]
+async fn queue_receive_dead_letters_after_max_attempts() {
+    let Some(pool) = pool_or_skip().await else { return };
+    let (server, app_id) = server_for(pool.clone(), "dl").await;
+
+    let script_id = create_script(&server, &app_id, "fail", THROW_HANDLER).await;
+    let resp = server
+        .post(&format!("/api/v1/admin/apps/{app_id}/triggers/queue"))
+        .json(&json!({
+            "script_id": script_id,
+            "queue_name": "failing",
+            "visibility_timeout_secs": 30
+        }))
+        .await;
+    resp.assert_status(axum::http::StatusCode::CREATED);
+
+    enqueue_directly(&pool, &app_id, "failing", json!({ "x": 1 })).await;
+
+    // Allow time for attempts to exhaust (3 retries × exponential
+    // backoff ≈ 7s in default config; we cap the poll loop generously).
+    for _ in 0..150 {
+        if count_dead_letters_for_queue(&pool, &app_id, "failing").await > 0 {
+            break;
+        }
+        tokio::time::sleep(Duration::from_millis(200)).await;
+    }
+    assert!(
+        count_dead_letters_for_queue(&pool, &app_id, "failing").await >= 1,
+        "expected a dead-letter row for the queue after max attempts"
+    );
+    assert_eq!(
+        count_queue_messages(&pool, &app_id, "failing").await,
+        0,
+        "queue row should be deleted after dead-letter"
+    );
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 4)]
+async fn queue_one_consumer_per_queue_rejected() {
+    let Some(pool) = pool_or_skip().await else { return };
+    let (server, app_id) = server_for(pool.clone(), "onecon").await;
+
+    let s1 = create_script(&server, &app_id, "first", ACK_HANDLER).await;
+    let s2 = create_script(&server, &app_id, "second", ACK_HANDLER).await;
+    let resp = server
+        .post(&format!("/api/v1/admin/apps/{app_id}/triggers/queue"))
+        .json(&json!({
+            "script_id": s1,
+            "queue_name": "single_owner",
+            "visibility_timeout_secs": 30
+        }))
+        .await;
+    resp.assert_status(axum::http::StatusCode::CREATED);
+
+    let resp2 = server
+        .post(&format!("/api/v1/admin/apps/{app_id}/triggers/queue"))
+        .json(&json!({
+            "script_id": s2,
+            "queue_name": "single_owner",
+            "visibility_timeout_secs": 30
+        }))
+        .await;
+    // The repo returns Invalid (422) for the duplicate consumer.
+    assert!(
+        resp2.status_code().is_client_error(),
+        "expected 4xx for duplicate consumer, got {}",
+        resp2.status_code()
+    );
+    let body = resp2.text();
+    assert!(
+        body.contains("already has a consumer")
+            || body.contains("queue 'single_owner'")
+            || body.contains("consumer trigger"),
+        "expected friendly conflict message, got: {body}"
+    );
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 4)]
+async fn queue_visibility_timeout_reclaim() {
+    let Some(pool) = pool_or_skip().await else { return };
+    let (server, app_id) = server_for(pool.clone(), "vt").await;
+
+    let script_id = create_script(&server, &app_id, "slow", ACK_HANDLER).await;
+    // Minimum visibility timeout per the repo's validation.
+    let resp = server
+        .post(&format!("/api/v1/admin/apps/{app_id}/triggers/queue"))
+        .json(&json!({
+            "script_id": script_id,
+            "queue_name": "vt_queue",
+            "visibility_timeout_secs": 5
+        }))
+        .await;
+    resp.assert_status(axum::http::StatusCode::CREATED);
+
+    // Insert a message and immediately fake a stale claim (claimed_at
+    // far enough in the past that the reclaim task picks it up).
+    let msg_id = Uuid::new_v4();
+    sqlx::query(
+        "INSERT INTO queue_messages (id, app_id, queue_name, payload, max_attempts, \
+                                     claim_token, claimed_at) \
+         VALUES ($1, $2, 'vt_queue', $3, 3, $4, NOW() - INTERVAL '60 seconds')",
+    )
+    .bind(msg_id)
+    .bind(Uuid::parse_str(&app_id).expect("uuid"))
+    .bind(json!({ "x": 99 }))
+    .bind(Uuid::new_v4())
+    .execute(&pool)
+    .await
+    .expect("insert stale claim");
+
+    // The reclaim task default cadence is 30s; we wait up to 45s for it
+    // to fire OR observe the marker (whichever comes first — the marker
+    // shows up only after a successful claim by the live dispatcher).
+    let marker = poll_marker(&pool, &app_id).await;
+    if marker.is_some() {
+        return; // dispatcher already re-claimed and delivered
+    }
+    // Otherwise the reclaim path is the only way the message would
+    // have been picked up. Poll the claim state.
+    for _ in 0..50 {
+        let row: Option<(Option<Uuid>,)> = sqlx::query_as(
+            "SELECT claim_token FROM queue_messages WHERE id = $1",
+        )
+        .bind(msg_id)
+        .fetch_optional(&pool)
+        .await
+        .expect("read");
+        if let Some((token,)) = row {
+            if token.is_none() {
+                return; // reclaim succeeded — claim cleared
+            }
+        } else {
+            return; // already delivered + acked
+        }
+        tokio::time::sleep(Duration::from_secs(1)).await;
+    }
+    panic!("visibility timeout reclaim did not fire within 50s");
+}
diff --git a/crates/picloud/tests/retry_e2e.rs b/crates/picloud/tests/retry_e2e.rs
new file mode 100644
index 0000000..088ea21
--- /dev/null
+++ b/crates/picloud/tests/retry_e2e.rs
@@ -0,0 +1,175 @@
+//! v1.1.9 retry::* end-to-end test against a real engine inside the
+//! all-in-one binary. Smaller surface than queue/invoke (no async
+//! plumbing) — covers policy clamping, success-on-Nth-attempt, and
+//! on_codes filtering through a real HTTP route.
+//!
+//! Skips when DATABASE_URL is unset.
+
+#![allow(clippy::needless_pass_by_value)]
+
+use axum_test::TestServer;
+use serde_json::{json, Value};
+use sqlx::postgres::PgPoolOptions;
+use sqlx::PgPool;
+use uuid::Uuid;
+
+async fn pool_or_skip() -> Option<PgPool> {
+    let Ok(url) = std::env::var("DATABASE_URL") else {
+        eprintln!("retry_e2e: DATABASE_URL unset — skipping");
+        return None;
+    };
+    let pool = PgPoolOptions::new()
+        .max_connections(2)
+        .connect(&url)
+        .await
+        .expect("connect");
+    sqlx::migrate!("../manager-core/migrations")
+        .run(&pool)
+        .await
+        .expect("migrate");
+    Some(pool)
+}
+
+async fn server_for(pool: PgPool, suffix: &str) -> (TestServer, String) {
+    use picloud_manager_core::auth::hash_password;
+    use picloud_shared::InstanceRole;
+
+    let unique = format!("{suffix}-{}", Uuid::new_v4().simple());
+    let auth = picloud::AuthDeps::from_pool(pool.clone());
+    let username = format!("e2e-{unique}");
+    let hash = hash_password("pw").expect("hash");
+    auth.users
+        .create(&username, &hash, InstanceRole::Owner, None)
+        .await
+        .expect("seed admin");
+
+    let app = picloud::build_app(
+        pool,
+        auth,
+        picloud_shared::MasterKey::from_bytes([0x42u8; 32]),
+    )
+    .await
+    .expect("build_app");
+    let mut server = TestServer::new(app).expect("TestServer");
+    let resp = server
+        .post("/api/v1/admin/auth/login")
+        .json(&json!({ "username": username, "password": "pw" }))
+        .await;
+    resp.assert_status_ok();
+    let token = resp.json::<Value>()["token"]
+        .as_str()
+        .expect("token")
+        .to_string();
+    server.add_header("authorization", format!("Bearer {token}"));
+
+    let slug = format!("e2e-{unique}");
+    let created: Value = server
+        .post("/api/v1/admin/apps")
+        .json(&json!({ "slug": slug, "name": slug }))
+        .await
+        .json();
+    let app_id = created["id"].as_str().expect("app id").to_string();
+    (server, app_id)
+}
+
+async fn create_route_for(
+    server: &TestServer,
+    app_id: &str,
+    name: &str,
+    source: &str,
+    path: &str,
+) {
+    let created: Value = server
+        .post("/api/v1/admin/scripts")
+        .json(&json!({ "app_id": app_id, "name": name, "source": source }))
+        .await
+        .json();
+    let script_id = created["id"].as_str().expect("script id");
+    let resp = server
+        .post(&format!("/api/v1/admin/apps/{app_id}/routes"))
+        .json(&json!({
+            "script_id": script_id,
+            "method": "GET",
+            "path": path,
+            "host": null,
+            "dispatch_mode": "sync"
+        }))
+        .await;
+    resp.assert_status(axum::http::StatusCode::CREATED);
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn retry_run_eventually_succeeds_inside_http_handler() {
+    let Some(pool) = pool_or_skip().await else { return };
+    let (server, app_id) = server_for(pool, "retry-succ").await;
+
+    // attempt counter mutates across retries; the 3rd attempt returns
+    // the count.
+    let src = r#"
+        let attempts = 0;
+        let p = retry::policy(#{ max_attempts: 5, base_ms: 1, jitter_pct: 0 });
+        let v = retry::run(p, || {
+            attempts += 1;
+            if attempts < 3 { throw "transient" } else { attempts }
+        });
+        #{ statusCode: 200, body: v }
+    "#;
+    create_route_for(&server, &app_id, "succ", src, "/r/succ").await;
+
+    let resp = server.get("/r/succ").await;
+    resp.assert_status_ok();
+    let body: Value = resp.json();
+    assert_eq!(body, json!(3));
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn retry_run_surfaces_last_error_after_max_attempts() {
+    let Some(pool) = pool_or_skip().await else { return };
+    let (server, app_id) = server_for(pool, "retry-surf").await;
+
+    let src = r#"
+        let p = retry::policy(#{ max_attempts: 2, base_ms: 1, jitter_pct: 0 });
+        try {
+            retry::run(p, || { throw "boom" });
+            #{ statusCode: 200, body: "did not throw" }
+        } catch(e) {
+            #{ statusCode: 200, body: e }
+        }
+    "#;
+    create_route_for(&server, &app_id, "surf", src, "/r/surf").await;
+
+    let resp = server.get("/r/surf").await;
+    resp.assert_status_ok();
+    let body: Value = resp.json();
+    let s = body.as_str().unwrap_or_default();
+    assert!(s.contains("boom"), "expected 'boom' in error, got: {s}");
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn retry_on_codes_filters_unmatched_errors() {
+    let Some(pool) = pool_or_skip().await else { return };
+    let (server, app_id) = server_for(pool, "retry-codes").await;
+
+    // attempts is mutated on every entry; we throw a non-matching code
+    // → must surface immediately (attempts == 1).
+    let src = r#"
+        let attempts = 0;
+        let p = retry::policy(#{ max_attempts: 5, base_ms: 1, jitter_pct: 0 });
+        let p2 = retry::on_codes(p, ["http: 503"]);
+        try {
+            retry::run(p2, || {
+                attempts += 1;
+                throw "other failure"
+            });
+        } catch(_e) {
+            // swallow — assert via attempts count.
+        }
+        #{ statusCode: 200, body: attempts }
+    "#;
+    create_route_for(&server, &app_id, "codes", src, "/r/codes").await;
+
+    let resp = server.get("/r/codes").await;
+    resp.assert_status_ok();
+    let body: Value = resp.json();
+    assert_eq!(body, json!(1), "non-matching error should surface immediately");
+}