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/store/index.ts

@@ -14,6 +14,7 @@ import type {
   StandardConversion,
   Store,
   Supplier,
+  Topic,
   UnitConversion,
 } from "../lib/types";
 
@@ -26,6 +27,7 @@ interface AppStore {
   categoryUnits: CategoryUnit[];
   unitConversions: UnitConversion[];
   standardConversions: StandardConversion[];
+  topics: Topic[]; // دسته‌بندی‌های ۸گانه — از /material-categories
 
   // UI state
   expandedQuoteIds: Set<string>;
@@ -63,6 +65,7 @@ export const useAppStore = create<AppStore>()((set) => ({
   categoryUnits: [],
   unitConversions: [],
   standardConversions: [],
+  topics: [],
 
   expandedQuoteIds: new Set<string>(),
   wizardStep: 1,
@@ -77,6 +80,7 @@ export const useAppStore = create<AppStore>()((set) => ({
       categoryUnits: store.categoryUnits,
       unitConversions: store.unitConversions,
       standardConversions: store.standardConversions,
+      topics: store.topics,
     }),
   addQuote: (q) => set((s) => ({ quotes: [...s.quotes, q] })),
   updateQuote: (id, patch) =>