fix(boot): failed live attempt no longer shadows pre-published history; boot-default submit picks a fresh live run id

2 files changed, 24 insertions, 4 deletions

diff --git a/src/SomhairlesDream.Frontend/App.fs b/src/SomhairlesDream.Frontend/App.fs
index f9184c5..ec9e273 100644
--- a/src/SomhairlesDream.Frontend/App.fs
+++ b/src/SomhairlesDream.Frontend/App.fs
@@ -662,6 +662,19 @@ let selectedRun () =
       TargetId = inputValue "target-id-input"
       Render = (element "run-render-input" :?> HtmlInput).``checked`` }
 
+// The boot run id names a pre-published historical replay that already has an
+// on-disk manifest; re-running it can only fail ("run directory already
+// exists"). A user submit keeps their typed ids unless they left the boot
+// default untouched — then pick a fresh live run id instead.
+let freshLiveRunId (base_: string) =
+    sprintf "%s-live-%d" base_ (int (JS.Constructors.Date.now () % 1000000.0))
+
+let selectionForLiveStart (selection: RunSelection) =
+    if selection.RunId = "run-probe-real-2" then
+        { selection with RunId = freshLiveRunId selection.RunId }
+    else
+        selection
+
 let startRun (selection: RunSelection) =
     let requestBody =
         createObj
@@ -762,7 +775,7 @@ let boot () =
     (element "viewport-note").addEventListener("click", fun _ -> retryFailedLoad ())
     (element "run-controls").addEventListener("submit", fun event ->
         event.preventDefault()
-        startRun (selectedRun ()))
+        startRun (selectionForLiveStart (selectedRun ())))
 
     loadBootHistory ()
 
diff --git a/src/SomhairlesDream.Server/ArtifactRunCoordinator.fs b/src/SomhairlesDream.Server/ArtifactRunCoordinator.fs
index 51a4fcd..6cd5fd3 100644
--- a/src/SomhairlesDream.Server/ArtifactRunCoordinator.fs
+++ b/src/SomhairlesDream.Server/ArtifactRunCoordinator.fs
@@ -267,10 +267,17 @@ type ArtifactRunCoordinator(
         | Some store ->
             let snapshot = store.Observe(clock ())
 
-            if snapshot.Status <> "complete" then
-                Error(RunNotComplete snapshot)
-            else
+            if snapshot.Status = "complete" then
                 verifiedManifest projectId runId
+            else
+                // A live entry that failed or is idling (e.g. "run directory
+                // already exists" because the run was pre-published on disk)
+                // must not shadow a complete on-disk manifest: the historical
+                // replay stays viewable while the rejected live attempt is
+                // reported by /api/runs/events.
+                match verifiedManifest projectId runId with
+                | Ok manifest -> Ok manifest
+                | Error _ -> Error(RunNotComplete snapshot)
 
     member _.Artifact(projectId: string, runId: string, relativePath: string) : Result<ArtifactFile, ArtifactLookupError> =
         match registry.TryFind(projectId, runId) with