Offer supply suggestions, drop the circuit column, center cells

The Versorgung field suggests ELT and MSR (plus values already used in
the balance) through a datalist and still accepts free text. The circuit
number column is not needed in early design phases; it is removed from
the data model, the regenerated migration 0010, the editor and the
print. All cells are centered except "Verbraucher / Flächen", group
titles and total labels.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/db/migrations/0010_estimate_balances.sql

@@ -27,7 +27,6 @@ CREATE TABLE `estimate_rows` (
 	`group_id` text NOT NULL,
 	`sort_order` integer DEFAULT 0 NOT NULL,
 	`supply` text,
-	`circuit_ref` text,
 	`name` text DEFAULT '' NOT NULL,
 	`quantity` real DEFAULT 0 NOT NULL,
 	`unit` text DEFAULT 'piece' NOT NULL,

src/db/migrations/meta/0010_snapshot.json

@@ -1,7 +1,7 @@
 {
   "version": "6",
   "dialect": "sqlite",
-  "id": "6df688bd-a78a-46a1-ba7a-4068119bf8bd",
+  "id": "5376ae9f-67c7-4603-b3d2-8527136436f9",
   "prevId": "2cd9adef-2f08-4635-b3d9-ecf71f624c7f",
   "tables": {
     "buildings": {
@@ -1322,13 +1322,6 @@
           "notNull": false,
           "autoincrement": false
         },
-        "circuit_ref": {
-          "name": "circuit_ref",
-          "type": "text",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
         "name": {
           "name": "name",
           "type": "text",

src/db/migrations/meta/_journal.json

@@ -75,7 +75,7 @@
     {
       "idx": 10,
       "version": "6",
-      "when": 1790425784626,
+      "when": 1790438092269,
       "tag": "0010_estimate_balances",
       "breakpoints": true
     }

src/db/schema/estimate-balances.ts

@@ -44,7 +44,6 @@ export const estimateRows = sqliteTable(
       .references(() => estimateGroups.id, { onDelete: "cascade" }),
     sortOrder: integer("sort_order").notNull().default(0),
     supply: text("supply"),
-    circuitRef: text("circuit_ref"),
     name: text("name").notNull().default(""),
     quantity: real("quantity").notNull().default(0),
     unit: text("unit", { enum: ["piece", "area"] }).notNull().default("piece"),