refactor(api): extract timeline quick assign support

packages/api/src/__tests__/timeline-allocation-mutation-support.test.ts

@@ -5,9 +5,6 @@ import {
   buildTimelineAllocationEntryUpdate,
   buildTimelineAllocationMetadata,
   buildTimelineBatchShiftAuditChanges,
-  buildTimelineQuickAssignAssignmentInput,
-  buildTimelineQuickAssignMetadata,
-  calculateTimelineAllocationPercentage,
   shiftTimelineAllocationWindow,
   validateTimelineAllocationDateRanges,
 } from "../router/timeline-allocation-mutation-support.js";
@@ -39,43 +36,6 @@ describe("timeline allocation mutation support", () => {
       )).toThrowError(TRPCError);
   });
 
-  it("rounds allocation percentages and clamps them to 100", () => {
-    expect(calculateTimelineAllocationPercentage(3.9)).toBe(49);
-    expect(calculateTimelineAllocationPercentage(9)).toBe(100);
-  });
-
-  it("builds source metadata for quick assign operations", () => {
-    expect(buildTimelineQuickAssignMetadata("quickAssign")).toEqual({ source: "quickAssign" });
-    expect(buildTimelineQuickAssignMetadata("batchQuickAssign")).toEqual({ source: "batchQuickAssign" });
-  });
-
-  it("builds assignment create payloads for quick assign flows", () => {
-    expect(
-      buildTimelineQuickAssignAssignmentInput({
-        resourceId: "resource_1",
-        projectId: "project_1",
-        startDate: new Date("2026-04-01T00:00:00.000Z"),
-        endDate: new Date("2026-04-05T00:00:00.000Z"),
-        hoursPerDay: 6,
-        role: "Engineer",
-        roleId: "role_1",
-        status: "PROPOSED",
-        source: "quickAssign",
-      }),
-    ).toEqual({
-      resourceId: "resource_1",
-      projectId: "project_1",
-      startDate: new Date("2026-04-01T00:00:00.000Z"),
-      endDate: new Date("2026-04-05T00:00:00.000Z"),
-      hoursPerDay: 6,
-      percentage: 75,
-      role: "Engineer",
-      roleId: "role_1",
-      status: "PROPOSED",
-      metadata: { source: "quickAssign" },
-    });
-  });
-
   it("shifts and clamps allocation windows for each batch-shift mode", () => {
     expect(
       shiftTimelineAllocationWindow({