add shel

docs/protocol.md

@@ -35,10 +35,10 @@ Everything the main menu needs in one request.
 ```json
 {
   "maxSchools": 6,
-  "defaultStartDate": "2012-04-03T06:00:00Z",
+  "defaultStartDate": "2012-03-31T06:00:00Z",
   "gameMinutesPerRealSecond": 5,
   "schools": [
-    { "id": 1, "name": "Гимназия №14", "gameTime": "2012-04-03T07:35:00Z", "running": false, "speedIndex": 1 }
+    { "id": 1, "name": "Гимназия №14", "gameTime": "2012-03-31T07:35:00Z", "running": false, "speedIndex": 1 }
   ]
 }
 ```
@@ -66,13 +66,22 @@ Placeable (non-abstract) types plus labels in `lang`, and the last-wins `maps/de
 `core` plus the listed extras. The server always prepends `core`. `mods` is a comma-separated
 list of extra pack ids; omit it for vanilla. Unknown extras return `400` `unknown-mod`.
 
-Room slots include a `count` (how many of the default thing the def places). Things carry
-`pupilSlots` — how many pupils that thing hosts for lessons. The create editor copies both onto
-the map instance; the snapshot's per-node pupil-slot total is computed on the server.
+Room defs that are homerooms carry `homeroom`, `seatThing` and `defaultSeats` instead of a
+slot table. A map classroom stores `seats` — how many of that thing occupy the room. Capacity is
+still `ThingDef.pupilSlots × seats`. Named slots remain on rooms whose furnishing actually
+varies (cafeteria, medical office, principal's office, library). The create editor shows a
+single seats field on a homeroom and the old slot rows on everything else.
+
+Things carry `pupilSlots` — how many pupils that thing hosts. The snapshot's per-node pupil-slot
+total is computed on the server.
 
 `nameSets` is the list of placeable name packs (`defName` + label). The create dialog picks one;
 it is independent of the UI language.
 
+`subjects` is the list of placeable subjects (`defName`, label, `gradeMin`/`gradeMax`,
+`hoursPerWeek`, and `skills` with shares). The assignment form in a later phase reads it; the
+create editor does not.
+
 `lang` is the same value Hello carries — not `Accept-Language`. Anything other than `en` is
 Russian.
 
@@ -83,7 +92,7 @@ Body:
 ```json
 {
   "name": "Гимназия №14",
-  "startDate": "2012-04-03T06:00:00Z",
+  "startDate": "2012-03-31T06:00:00Z",
   "modIds": [],
   "map": null,
   "nameSetId": "Slavic"