Refactor: Move DashboardFilterProvider to pages directory

- Move DashboardFilterProvider component and tests from providers/ to pages/
- Update DashboardPage imports to reflect new structure
- Update documentation with latest task progress

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Docs/Tasks.md

@@ -1,27 +1,3 @@
-### T-18 · Merge `useDashboardCountryData` and `useMapData` — near-identical hooks
-
-**Where found:** `frontend/src/hooks/useDashboardCountryData.ts` and `frontend/src/hooks/useMapData.ts`
-
-**Why this is needed:** Both hooks call `fetchBansByCountry`, maintain the same state shape (`countries`, `countryNames`, `bans`, `total`, `loading`, `error`), and implement the same abort-controller pattern. The only behavioural difference is that `useMapData` adds a 300ms debounce. Any bug fix must be applied to both.
-
-**Goal:** A single `useBansByCountry` base hook; `useMapData` adds the debounce on top.
-
-**What to do:**
-1. Create `useBansByCountry(range, origin, source, countryCode?)` — the shared fetch logic without debounce.
-2. Refactor `useDashboardCountryData` to wrap `useBansByCountry`.
-3. Refactor `useMapData` to wrap `useBansByCountry` and add the debounce layer.
-4. Keep the existing hook names as thin wrappers to preserve call sites.
-
-**Possible traps and issues:**
-- `useMapData` returns `{ data }` (the full response object) whereas `useDashboardCountryData` unpacks `countries`, `countryNames`, `bans`, `total`. Normalise the return shape before collapsing.
-- Tests for each hook test them independently — update or merge.
-
-**Docs changes needed:** None.
-
-**Doc references:** `frontend/src/hooks/useDashboardCountryData.ts`, `frontend/src/hooks/useMapData.ts`
-
----
-
 ### T-19 · Move `DashboardFilterProvider` — page-scoped provider in wrong directory
 
 **Where found:** `frontend/src/providers/DashboardFilterProvider.tsx` — instantiated only inside `DashboardPage.tsx`

Docs/Web-Development.md

@@ -179,6 +179,20 @@ The distinction between **`pages/`** and **`components/`** is fundamental to the
 - **Utils** are pure functions with no side effects and no React dependency.
 - **Theme** contains exclusively Fluent UI custom token overrides and theme definitions — no component logic.
 
+### Providers — App-Wide vs Page-Scoped
+
+The `providers/` directory is reserved for **app-wide context providers** — providers that wrap the entire application or large sections of it and are used by many pages or components.
+
+**App-wide providers belong in `providers/`:**
+- `AuthProvider` — authentication state for the whole app
+- `ThemeProvider` — theme/styling state for the whole app
+- `TimezoneProvider` — timezone preference for the whole app
+
+**Page-scoped providers belong co-located with their consumer:**
+If a React Context provider is used by **only one page** (e.g., `DashboardFilterProvider` is used only by `DashboardPage`), it should live **in the same directory as the page** or in a subdirectory alongside the page's components. This prevents the `providers/` directory from being cluttered with page-specific state and makes the scope of these providers clear to future contributors.
+
+**Example:** `DashboardFilterProvider` manages dashboard time-range and origin filters. It is instantiated only inside `DashboardPage.tsx` and its sub-components. Therefore, it lives in `pages/DashboardFilterProvider.tsx` (or `pages/dashboard/DashboardFilterProvider.tsx` if the page is split into a subdirectory), not in `providers/`.
+
 ---
 
 ## 5. UI Framework — Fluent UI React (v9)

frontend/src/pages/DashboardPage.tsx

@@ -16,7 +16,7 @@ import { TopCountriesBarChart } from "../components/TopCountriesBarChart";
 import { TopCountriesPieChart } from "../components/TopCountriesPieChart";
 import { useCommonSectionStyles } from "../components/commonStyles";
 import { useDashboardCountryData } from "../hooks/useDashboardCountryData";
-import { DashboardFilterProvider, useDashboardFilters } from "../providers/DashboardFilterProvider";
+import { DashboardFilterProvider, useDashboardFilters } from "./DashboardFilterProvider";
 
 
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