fix(number-fields): избегаем потери точности длинных чисел

- number-поля теперь рендерятся как text + inputMode=numeric,
  чтобы браузер не округлял значения через input type=number
- пробелы при вставке в number-поля удаляются
- бэкенд нормализует значения number-полей в строку перед сохранением
- добавлен хелпер normalizeFieldValueForStorage

Closes: искажение расчётного счёта и других длинных числовых полей

migrations/0007_sync_missing_columns_v2.sql

@@ -0,0 +1,113 @@
+-- Idempotent column sync v2 for existing databases
+-- Adds columns and constraints that may be absent on servers deployed before 0000_baseline.sql.
+-- Primary target: status_transitions table (and supporting unique constraints required for composite FKs).
+-- Safe to run multiple times: all statements use IF NOT EXISTS / DO $$ BEGIN … END $$.
+
+-- ============================================================
+-- status_transitions table: columns added after initial deployment
+-- ============================================================
+ALTER TABLE status_transitions ADD COLUMN IF NOT EXISTS reject_to_status_id integer;
+ALTER TABLE status_transitions ADD COLUMN IF NOT EXISTS assignee_user_id integer;
+ALTER TABLE status_transitions ADD COLUMN IF NOT EXISTS assignee_conditions jsonb;
+ALTER TABLE status_transitions ADD COLUMN IF NOT EXISTS approve_button_text varchar(50) DEFAULT 'Одобрить';
+ALTER TABLE status_transitions ADD COLUMN IF NOT EXISTS approve_button_color varchar(7) DEFAULT '#22c55e';
+ALTER TABLE status_transitions ADD COLUMN IF NOT EXISTS reject_button_text varchar(50) DEFAULT 'Отклонить';
+ALTER TABLE status_transitions ADD COLUMN IF NOT EXISTS reject_button_color varchar(7) DEFAULT '#ef4444';
+--> statement-breakpoint
+
+-- ============================================================
+-- form_statuses: unique(id, form_id) — required as FK target for
+-- composite foreign keys on status_transitions
+-- ============================================================
+DO $$ BEGIN
+  IF NOT EXISTS (
+    SELECT 1 FROM information_schema.table_constraints
+    WHERE constraint_name = 'form_statuses_id_form_id_unique'
+      AND table_name = 'form_statuses'
+  ) THEN
+    ALTER TABLE form_statuses ADD CONSTRAINT "form_statuses_id_form_id_unique" UNIQUE ("id", "form_id");
+  END IF;
+END $$;
+--> statement-breakpoint
+
+-- ============================================================
+-- form_fields: unique(id, form_id) — mirrors baseline constraint,
+-- required as FK target for other composite references
+-- ============================================================
+DO $$ BEGIN
+  IF NOT EXISTS (
+    SELECT 1 FROM information_schema.table_constraints
+    WHERE constraint_name = 'form_fields_id_form_id_unique'
+      AND table_name = 'form_fields'
+  ) THEN
+    ALTER TABLE form_fields ADD CONSTRAINT "form_fields_id_form_id_unique" UNIQUE ("id", "form_id");
+  END IF;
+END $$;
+--> statement-breakpoint
+
+-- ============================================================
+-- status_transitions: composite FK — from_status_id must belong
+-- to the same form as form_id
+-- ============================================================
+DO $$ BEGIN
+  IF NOT EXISTS (
+    SELECT 1 FROM information_schema.table_constraints
+    WHERE constraint_name = 'fk_transition_from_status_same_form'
+      AND table_name = 'status_transitions'
+  ) THEN
+    ALTER TABLE status_transitions
+      ADD CONSTRAINT "fk_transition_from_status_same_form"
+      FOREIGN KEY ("from_status_id", "form_id")
+      REFERENCES form_statuses ("id", "form_id");
+  END IF;
+END $$;
+--> statement-breakpoint
+
+-- ============================================================
+-- status_transitions: composite FK — to_status_id must belong
+-- to the same form as form_id
+-- ============================================================
+DO $$ BEGIN
+  IF NOT EXISTS (
+    SELECT 1 FROM information_schema.table_constraints
+    WHERE constraint_name = 'fk_transition_to_status_same_form'
+      AND table_name = 'status_transitions'
+  ) THEN
+    ALTER TABLE status_transitions
+      ADD CONSTRAINT "fk_transition_to_status_same_form"
+      FOREIGN KEY ("to_status_id", "form_id")
+      REFERENCES form_statuses ("id", "form_id");
+  END IF;
+END $$;
+--> statement-breakpoint
+
+-- ============================================================
+-- status_transitions: FK — reject_to_status_id -> form_statuses.id
+-- ============================================================
+DO $$ BEGIN
+  IF NOT EXISTS (
+    SELECT 1 FROM pg_constraint
+    WHERE conname = 'status_transitions_reject_to_status_id_form_statuses_id_fk'
+  ) THEN
+    ALTER TABLE status_transitions
+      ADD CONSTRAINT "status_transitions_reject_to_status_id_form_statuses_id_fk"
+      FOREIGN KEY ("reject_to_status_id") REFERENCES form_statuses ("id")
+      ON DELETE no action ON UPDATE no action;
+  END IF;
+END $$;
+--> statement-breakpoint
+
+-- ============================================================
+-- status_transitions: FK — assignee_user_id -> users.id
+-- ============================================================
+DO $$ BEGIN
+  IF NOT EXISTS (
+    SELECT 1 FROM pg_constraint
+    WHERE conname = 'status_transitions_assignee_user_id_users_id_fk'
+  ) THEN
+    ALTER TABLE status_transitions
+      ADD CONSTRAINT "status_transitions_assignee_user_id_users_id_fk"
+      FOREIGN KEY ("assignee_user_id") REFERENCES users ("id")
+      ON DELETE no action ON UPDATE no action;
+  END IF;
+END $$;