feat(v1.1.1-routes): outbox-routed sync HTTP + dispatch_mode=async

Routes gain `dispatch_mode TEXT NOT NULL DEFAULT 'sync'` (migration
0012). Existing routes default to sync so the migration is
non-breaking. `DispatchMode` enum lands in `picloud-shared`.

The user-routes orchestrator handler now branches:
- `dispatch_mode = async` → write outbox row with `reply_to = None`,
  return `202 Accepted` + `{accepted_at, execution_id}`. Dispatcher
  fires the script in the background; retries / dead-letters via
  the framework from commit 5.
- `dispatch_mode = sync` → register an inbox channel
  (`tokio::sync::oneshot`), write outbox row with `reply_to =
  inbox_id`, `.await` on the receiver with a timeout =
  script.timeout_seconds + 2s buffer. Dispatcher hands the result
  back; orchestrator maps `InboxResult` into the HTTP response per
  the design-notes §3 status-code table (422/502/503/504/507/500).

`InboxRegistry` (orchestrator-core/src/inbox.rs) is the in-process
implementation of `InboxResolver`. Lock-free HashMap of pending
oneshot senders keyed by `inbox_id`. Tests cover register/deliver
round-trip, unknown-id is abandoned, dropped-receiver is abandoned,
explicit cancel. Cluster mode (v1.3+) swaps this for
LISTEN/NOTIFY-keyed lookup behind the same trait.

`OutboxWriter` trait lives in `picloud-shared` so orchestrator-core
can write to the outbox without depending on manager-core (which
would invert the dependency arrow). `PostgresOutboxRepo` implements
both `OutboxRepo` (dispatcher surface) and `OutboxWriter`
(orchestrator surface); the picloud binary clones the same concrete
Arc into both trait views.

The dispatcher's HTTP arm (commit 5 had a stub) now decodes the
`HttpDispatchPayload` off the outbox row, looks up the script,
synthesizes an `ExecRequest`, and runs it through the executor.
Outcome routing reuses the same path as KV triggers — sync HTTP
flows through the inbox, async dispatch gets dropped after
success (or DL'd on exhaustion).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

crates/manager-core/src/route_repo.rs

@@ -4,7 +4,7 @@
 //! after every write — see the route_admin module for the binding.
 
 use async_trait::async_trait;
-use picloud_shared::{AppId, HostKind, PathKind, Route, ScriptId};
+use picloud_shared::{AppId, DispatchMode, HostKind, PathKind, Route, ScriptId};
 use sqlx::PgPool;
 use uuid::Uuid;
 
@@ -20,6 +20,7 @@ pub struct NewRoute {
     pub path_kind: PathKind,
     pub path: String,
     pub method: Option<String>,
+    pub dispatch_mode: DispatchMode,
 }
 
 #[async_trait]
@@ -62,7 +63,7 @@ impl RouteRepository for PostgresRouteRepository {
     async fn list_all(&self) -> Result<Vec<Route>, ScriptRepositoryError> {
         let rows = sqlx::query_as::<_, RouteRow>(
             "SELECT id, app_id, script_id, host_kind, host, host_param_name, \
-                    path_kind, path, method, created_at \
+                    path_kind, path, method, dispatch_mode, created_at \
              FROM routes ORDER BY created_at",
         )
         .fetch_all(&self.pool)
@@ -73,7 +74,7 @@ impl RouteRepository for PostgresRouteRepository {
     async fn get(&self, route_id: Uuid) -> Result<Option<Route>, ScriptRepositoryError> {
         let row = sqlx::query_as::<_, RouteRow>(
             "SELECT id, app_id, script_id, host_kind, host, host_param_name, \
-                    path_kind, path, method, created_at \
+                    path_kind, path, method, dispatch_mode, created_at \
              FROM routes WHERE id = $1",
         )
         .bind(route_id)
@@ -85,7 +86,7 @@ impl RouteRepository for PostgresRouteRepository {
     async fn list_for_app(&self, app_id: AppId) -> Result<Vec<Route>, ScriptRepositoryError> {
         let rows = sqlx::query_as::<_, RouteRow>(
             "SELECT id, app_id, script_id, host_kind, host, host_param_name, \
-                    path_kind, path, method, created_at \
+                    path_kind, path, method, dispatch_mode, created_at \
              FROM routes WHERE app_id = $1 ORDER BY created_at",
         )
         .bind(app_id.into_inner())
@@ -100,7 +101,7 @@ impl RouteRepository for PostgresRouteRepository {
     ) -> Result<Vec<Route>, ScriptRepositoryError> {
         let rows = sqlx::query_as::<_, RouteRow>(
             "SELECT id, app_id, script_id, host_kind, host, host_param_name, \
-                    path_kind, path, method, created_at \
+                    path_kind, path, method, dispatch_mode, created_at \
              FROM routes WHERE script_id = $1 ORDER BY created_at",
         )
         .bind(script_id.into_inner())
@@ -113,10 +114,10 @@ impl RouteRepository for PostgresRouteRepository {
         let res = sqlx::query_as::<_, RouteRow>(
             "INSERT INTO routes ( \
                 app_id, script_id, host_kind, host, host_param_name, \
-                path_kind, path, method \
-             ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8) \
+                path_kind, path, method, dispatch_mode \
+             ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9) \
              RETURNING id, app_id, script_id, host_kind, host, host_param_name, \
-                       path_kind, path, method, created_at",
+                       path_kind, path, method, dispatch_mode, created_at",
         )
         .bind(input.app_id.into_inner())
         .bind(input.script_id.into_inner())
@@ -126,6 +127,7 @@ impl RouteRepository for PostgresRouteRepository {
         .bind(path_kind_str(input.path_kind))
         .bind(&input.path)
         .bind(input.method.as_deref())
+        .bind(input.dispatch_mode.as_str())
         .fetch_one(&self.pool)
         .await;
 
@@ -198,6 +200,7 @@ struct RouteRow {
     path_kind: String,
     path: String,
     method: Option<String>,
+    dispatch_mode: String,
     created_at: chrono::DateTime<chrono::Utc>,
 }
 
@@ -221,6 +224,7 @@ impl From<RouteRow> for Route {
             },
             path: r.path,
             method: r.method,
+            dispatch_mode: DispatchMode::from_wire(&r.dispatch_mode).unwrap_or(DispatchMode::Sync),
             created_at: r.created_at,
         }
     }