feat(doctor): expose city/state in public doctor list

The public doctor list had no location field, so multi-domain consumers
could not tell which city domain owns a doctor. nobat724_front's sitemap
worked around this by fetching the list once per city (35 sweeps) and
subtracting, costing ~13s to build the root sitemap.

Location is resolved in bulk by DoctorRepository::findLocationsByDoctors
using the same rule the city_id/state_id filter applies: the doctor's own
address first, falling back to the address of a clinic they belong to.
Without the clinic fallback a doctor could match city_id=X yet report no
city, which would break the sitemap's per-domain partitioning.

city/state are arrays with at most one entry, matching the shape already
used by the doctor detail response and the clinic list. A doctor with no
address reports [] rather than null. Multi-location doctors get a single
primary city, mirroring the canonical rule on the public site.

Also surface the applied page size as meta.limit. Repositories silently
clamp limit to 50, which previously made clients believe pagination had
ended early — this is what truncated the sitemap to 50 doctors.

The clinic doctor-list endpoint gets the same location data so both
endpoints agree.

Location resolution costs at most 2 queries regardless of page size,
asserted directly against the repository rather than through the
endpoint, since the endpoint carries a pre-existing specialties N+1 in
findWithFilters that is unrelated to this change.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

docs/api/clinic.md

@@ -289,7 +289,13 @@ Get doctors associated with a clinic.
         "point": "4.8",
         "free_turn": "پنجشنبه 09:00–13:00",
         "hours_of_work": "شنبه تا چهارشنبه | پنجشنبه",
-        "active": true
+        "active": true,
+        "city": [
+          { "uuid": "7bfb989e-...", "id": "123", "name": "یاسوج", "parent": "23" }
+        ],
+        "state": [
+          { "uuid": "7bfb5705-...", "id": "23", "name": "کهگیلویه و بویراحمد" }
+        ]
       }
     ],
     "meta": { "totalRecords": 3, "totalPages": 1, "currentPage": 1 }
@@ -302,6 +308,7 @@ Get doctors associated with a clinic.
 | `free_turn` | string | Next available appointment (e.g. `پنجشنبه 09:00–13:00`), or `نوبت آزادی موجود نیست` if the doctor has no active weekly schedule |
 | `hours_of_work` | string | Working-days summary, or `برنامه کاری تنظیم نشده` when unscheduled |
 | `active` | boolean | `true` only when appointments are enabled **and** the doctor has an active schedule |
+| `city` / `state` | array | مکان خودِ پزشک (آدرس شخصی، و در نبودش آدرس کلینیک). آرایه با حداکثر یک عضو؛ پزشک بدون آدرس `[]`. جزئیات و قاعدهٔ انتخاب در [doctor.md](doctor.md#city--state-در-پاسخ-لیست) |
 
 > `free_turn`/`hours_of_work`/`active` are computed from each doctor's `WeeklySchedule` (loaded in bulk by the endpoint). Without a schedule they fall back to the "not set" values.