feat(frontend): fulfillment split, API-driven topics, hub-and-spoke nav, stock-count modal, FOUND ceiling, semantic colors

- bug1: quote header fulfillment counter («رسید: X از Y قلم» amber / «تکمیل
  شد» green / «در راه»); expanded line items visually split into the
  received part (رسید شده ✓ + date + target warehouse from the receipt
  allocations) and the in-transit remainder — quantities always sum to the
  original line (invariant D holds, display-only split)
- bug2: 8-topic grids (suppliers/wizard/units) now come from
  /material-categories via the store (new lib/topics.ts; fixed the mismatched
  «ابزار و تجهیزات ساخت» label); suppliers topic->category resolution no
  longer falls back to an arbitrary category; duplicate month/status lists
  reuse the shared dictionaries; TopicGrid gained a loading EmptyState
- bug3: hub-and-spoke — the tab strip renders only on the warehouse
  dashboard; sub-views hide it and navigate back via «بازگشت به داشبورد»;
  «افزایش موجود» became the «تغییر موجودی» entry button
- bug4: stock count goes through a confirmation modal (current vs counted
  vs variance with کسری/مازاد badges) before posting STOCK_COUNT; numbers
  parsed defensively
- bug5: found qty is capped client-side (red input + inline warning, submit
  disabled) and backend returns 422 when exceeding the missing balance;
  fully-recovered losses drop off the pending list
- bug6+7: quantities render as absolute values with semantic color coding
  (emerald inflow / rose outflow / blue neutral) across dashboard timeline,
  daily control and the change-inventory form

frontend/src/pages/Inventory/ArrivalsPage.tsx

@@ -9,7 +9,6 @@ import { Button } from "../../components/ui/button";
 import { useAuthStore } from "../../store/auth";
 import { PanelMenu } from "../../components/PanelMenu";
 import { accountMenuItems, inventorySubheader, panelMenuItems, pmMenuItems, useLogout } from "./panelMenu";
-import { InventoryTopNav } from "./InventoryTopNav";
 import { apiV26 } from "../../lib/api";
 import type { PendingArrival, Warehouse } from "../../lib/types";
 import { faNum, fmtDate } from "../../lib/formatters";
@@ -232,7 +231,6 @@ export function ArrivalsPage() {
         backLabel="بازگشت به داشبورد"
         icon={<WarehouseIcon className="h-4.5 w-4.5" strokeWidth={2} />}
         menu={<PanelMenu title="پنل مدیریت انبار" items={isAdmin ? accountMenuItems(logout) : pmMenuItems(logout)} />}
-        actions={<InventoryTopNav pathname={location.pathname} variant={isAdmin ? "admin" : "pm"} />}
       />
       <PageLayout className="flex flex-col gap-4">
         <div className="rounded-lg border border-blue/20 bg-blue/5 px-3 py-2 text-[12px] leading-6 text-muted">