partial complete fixes

app/api/v1/operations/[id]/close/route.ts

@@ -25,7 +25,19 @@ export async function POST(req: NextRequest, ctx: { params: Promise<{ id: string
 
     const existing = await prisma.operation.findUnique({
       where: { id },
-      select: { id: true, status: true, claimedByUserId: true, qcRequired: true },
+      select: {
+        id: true,
+        status: true,
+        claimedByUserId: true,
+        qcRequired: true,
+        unitsCompleted: true,
+        part: {
+          select: {
+            qty: true,
+            assembly: { select: { qty: true } },
+          },
+        },
+      },
     });
     if (!existing) throw new ApiError(404, "not_found", "Operation not found");
     if (existing.claimedByUserId !== actor.id) {
@@ -38,6 +50,25 @@ export async function POST(req: NextRequest, ctx: { params: Promise<{ id: string
       throw new ApiError(400, "qc_required", "This step requires an inline QC check before completing");
     }
 
+    // --- Partial vs fully-done detection --------------------------------
+    // The operator hits "Done" but may have only produced some of the
+    // assembly.qty × part.qty total units (e.g. end-of-shift handoff). In
+    // that case the step should end up `partial` so the NEXT operator can
+    // resume it — NOT `completed`, which locks it and requires admin to
+    // reset. We infer the operator's intent from the units they typed in:
+    //
+    //   units == 0 (blank)  → "trust me, it's done" → completed
+    //   units >= remaining  → math agrees → completed
+    //   units <  remaining  → partial (clear claim, no completedAt)
+    //
+    // QC-required ops still demand a QC record even on partial close —
+    // that's about material checks, not about finishing the batch.
+    const units = body.unitsProcessed ?? 0;
+    const totalUnits = existing.part.assembly.qty * existing.part.qty;
+    const remaining = Math.max(0, totalUnits - existing.unitsCompleted);
+    const wouldFinish = units === 0 || units >= remaining;
+    const nextStatus: "completed" | "partial" = wouldFinish ? "completed" : "partial";
+
     const now = new Date();
     await prisma.$transaction(async (tx) => {
       const openLog = await tx.timeLog.findFirst({
@@ -68,13 +99,13 @@ export async function POST(req: NextRequest, ctx: { params: Promise<{ id: string
       }
       // unitsCompleted is cumulative across pause/resume cycles; on close we
       // add this session's batch so the total reflects everything the step
-      // actually produced.
-      const units = body.unitsProcessed ?? 0;
+      // actually produced. Partial close releases the claim so the next
+      // operator can resume; completed close sets completedAt for reporting.
       await tx.operation.update({
         where: { id },
         data: {
-          status: "completed",
-          completedAt: now,
+          status: nextStatus,
+          completedAt: nextStatus === "completed" ? now : null,
           claimedByUserId: null,
           claimedAt: null,
           ...(units > 0 ? { unitsCompleted: { increment: units } } : {}),
@@ -85,18 +116,19 @@ export async function POST(req: NextRequest, ctx: { params: Promise<{ id: string
     const op = await prisma.operation.findUnique({ where: { id } });
     await audit({
       actorId: actor.id,
-      action: "close_op",
+      action: nextStatus === "completed" ? "close_op" : "partial_close_op",
       entity: "Operation",
       entityId: id,
       after: {
-        status: "completed",
+        status: nextStatus,
         unitsProcessed: body.unitsProcessed ?? null,
+        unitsRemaining: Math.max(0, remaining - units),
         qcPassed: body.qc?.passed ?? null,
       },
       ipAddress: clientIp(req),
     });
 
-    return ok({ operation: op });
+    return ok({ operation: op, partial: nextStatus === "partial" });
   } catch (err) {
     return errorResponse(err);
   }

app/op/scan/[token]/ScanClient.tsx

@@ -397,6 +397,28 @@ export default function ScanClient({ initialOp, viewer }: { initialOp: ScanOp; v
                 </div>
               ) : null}
 
+              {/*
+                Preview what Done will do. Keeps the match in lockstep with the
+                close route's partial-detection logic: units blank or >=
+                remaining means "fully done", anything less is a partial
+                handoff that releases the claim so the next operator can pick
+                it up.
+              */}
+              {(() => {
+                const typed = units ? Number(units) : 0;
+                const remaining = Math.max(0, totalUnits - op.unitsCompleted);
+                const willPartial = typed > 0 && typed < remaining;
+                return willPartial ? (
+                  <div className="rounded-md bg-orange-50 border border-orange-200 text-orange-900 text-xs px-3 py-2">
+                    Pressing <span className="font-semibold">Done</span> with {typed} of {remaining}{" "}
+                    remaining will mark this step <span className="font-semibold">Partial</span> and
+                    release the claim so another operator can resume. Enter{" "}
+                    <span className="font-mono">{remaining}</span> (or leave blank) if you actually
+                    finished the batch.
+                  </div>
+                ) : null;
+              })()}
+
               <div className="grid grid-cols-2 gap-3">
                 <button
                   onClick={onRelease}