fix(pleno-vue): propagate department selector to Selvvask usage query (TRU-11) (#317)

## Summary

Fixes TRU-11: when the department selector on the dashboard changes, the
Selvvask (self-wash) usage view did not re-query with the new
department. Both the orders list and the summary cards were bound to the
original department because the `HallId` filter was applied only once at
component setup.

## Root cause

`XLVaskUsagePagination.vue` derived `effectiveDepartmentId` once at
setup time and called `setFilter('HallId', ...)` a single time. There
was no `watch` on the department, so changing the `departmentId` prop or
the `departmentId` route param left the filter and the previously loaded
list untouched.

## Fix

- Convert `routeDepartmentId` and `effectiveDepartmentId` to `computed`
properties so they react to changes in the prop and the route param.
- Add a `watch(effectiveDepartmentId, ...)` that:
- Calls `setFilter('HallId', newId, false)` to update the filter, or
`setFilter('HallId', '*', false)` when the department is unset.
- Calls `loadList()` and `loadSummary()` to re-issue the Selvvask usage
query and refresh the summary cards.
- Pass the active department to the summary endpoint
(`/modules/xlvask/services/usage/orders/summary`) so the summary counts
also track the new department.

## Tests

Added
`tests/unit/xlvask-usage-pagination-department-propagation.spec.js` with
5 source-based assertions covering the computed department, the watcher,
the loadList/loadSummary re-issuance, the unset case, and the summary
params.

```
$ npx vitest run tests/unit/xlvask-usage-pagination-department-propagation.spec.js
✓ XLVaskUsagePagination department (HallId) propagation
  ✓ reacts to department changes via a computed effectiveDepartmentId
  ✓ watches the effective department and re-applies the HallId filter
  ✓ re-issues the usage query when the department changes
  ✓ clears the HallId filter when the department is unset
  ✓ includes the active department in the summary query params
Test Files  1 passed (1)
Tests       5 passed (5)
```

Existing related specs still pass (`xlvask-usage-pagination-404`,
`self-serve-pagination-machine-scope`, `pagination-date-selection`).

## Out of scope

`InvoicingBillingPeriodViewSelfWash.vue` does not pass `departmentId`
directly; department propagation there goes through the route or any
future parent selector. The fix in `XLVaskUsagePagination` covers all
current callers (`DepartmentPosSync.vue` and any future parent that
passes the prop or sets the route param).

## Refs

- Linear: TRU-11
- AUT-7

---------

Co-authored-by: Jeppe B <jeppe@copenhagentruckwash.io>
Co-authored-by: Pleno Bugfix Bot <bugfix-bot@pleno.local>
Co-authored-by: jeppemaxclaw[bot] <bot@jeppemaxclaw.local>

scripts/smoke-test.sh

@@ -0,0 +1,80 @@
+#!/usr/bin/env bash
+# Generic smoke test for any deployed app.
+#
+# Usage: ./scripts/smoke-test.sh [base_url]
+# Default: https://staging.truckwash.io
+#
+# Required env vars (set by GitHub Action):
+#   SMOKE_BASE_URL  - base URL to test (default: https://staging.truckwash.io)
+#
+# Optional env vars:
+#   SMOKE_TOKEN     - bearer token for authenticated checks
+#   SMOKE_TIMEOUT   - curl timeout in seconds (default: 10)
+#
+# Exits 0 on all-pass, 1 on any failure.
+
+set -euo pipefail
+
+BASE_URL="${SMOKE_BASE_URL:-${1:-https://staging.truckwash.io}}"
+TIMEOUT="${SMOKE_TIMEOUT:-10}"
+
+# Color codes
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m'
+
+FAIL=0
+
+check() {
+  local name="$1"
+  local url="$2"
+  local expected="${3:-200}"
+  local method="${4:-GET}"
+
+  local status
+  status=$(curl -s -o /dev/null -w "%{http_code}" -X "$method" --max-time "$TIMEOUT" "$url" || echo "000")
+
+  if [[ "$status" =~ ^($expected)$ ]] || [[ "$expected" == "2xx" && "$status" =~ ^2 ]]; then
+    echo -e "  ${GREEN}✓${NC} $name ($status) — $url"
+  else
+    echo -e "  ${RED}✗${NC} $name (expected $expected, got $status) — $url"
+    FAIL=1
+  fi
+}
+
+echo "Smoke test against $BASE_URL"
+echo "  (timeout ${TIMEOUT}s per check)"
+echo
+
+# === Health endpoints (universal) ===
+check "health check"  "$BASE_URL/healthz"     "2xx"
+check "ping"          "$BASE_URL/api/ping"    "2xx"
+
+# === Authentication (should NOT 500) ===
+check "login page"    "$BASE_URL/login"       "2xx"
+
+# === Public endpoints (api repo) ===
+check "customer list (public schema)"  "$BASE_URL/api/customer"            "2xx"
+check "kundeoprettelse form"           "$BASE_URL/kundeoprettelse"         "2xx"
+
+# === Public endpoints (pleno-vue) ===
+check "self-serve program picker"  "$BASE_URL/self-serve/program"  "2xx"
+check "vehicle step"               "$BASE_URL/self-serve/vehicle"  "2xx"
+
+# === Custom 404 should not 500 ===
+check "404 page"  "$BASE_URL/this-route-does-not-exist"  "404"
+
+# === Optional authenticated check ===
+if [ -n "${SMOKE_TOKEN:-}" ]; then
+  check "auth check"  "$BASE_URL/api/me"  "2xx"
+fi
+
+echo
+if [ "$FAIL" -eq 0 ]; then
+  echo -e "${GREEN}✓ All smoke tests passed${NC}"
+  exit 0
+else
+  echo -e "${RED}✗ Some smoke tests failed${NC}"
+  exit 1
+fi