diff --git a/api/alembic/versions/0053_svod2_server_paging.py b/api/alembic/versions/0053_svod2_server_paging.py
new file mode 100644
index 0000000..4346091
--- /dev/null
+++ b/api/alembic/versions/0053_svod2_server_paging.py
@@ -0,0 +1,15 @@
+from sql_migration import run_sql_file_migration
+
+
+revision = "0053"
+down_revision = "0049"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    run_sql_file_migration("0053_svod2_server_paging.sql")
+
+
+def downgrade() -> None:
+    pass
diff --git a/api/alembic/versions/sql/0053_svod2_server_paging.sql b/api/alembic/versions/sql/0053_svod2_server_paging.sql
new file mode 100644
index 0000000..40c3cac
--- /dev/null
+++ b/api/alembic/versions/sql/0053_svod2_server_paging.sql
@@ -0,0 +1,237 @@
+-- AURORA-1843, миграция 0053, часть 1: нормализаторы поиска как в JS и компактная проекция строки свода 2.
+
+-- Регистр без зависимости от локали: явная таблица translate (ASCII, кириллица, Ґ, латиница-1 без U+00D7).
+CREATE OR REPLACE FUNCTION v3.svod2_casefold(x text)
+RETURNS text
+LANGUAGE sql IMMUTABLE
+AS $function$
+    SELECT translate(
+        x,
+        E'\u0041\u0042\u0043\u0044\u0045\u0046\u0047\u0048\u0049\u004A\u004B\u004C\u004D\u004E\u004F\u0050\u0051\u0052\u0053\u0054\u0055\u0056\u0057\u0058\u0059\u005A\u0410\u0411\u0412\u0413\u0414\u0415\u0416\u0417\u0418\u0419\u041A\u041B\u041C\u041D\u041E\u041F\u0420\u0421\u0422\u0423\u0424\u0425\u0426\u0427\u0428\u0429\u042A\u042B\u042C\u042D\u042E\u042F\u0400\u0401\u0402\u0403\u0404\u0405\u0406\u0407\u0408\u0409\u040A\u040B\u040C\u040D\u040E\u040F\u0490\u00C0\u00C1\u00C2\u00C3\u00C4\u00C5\u00C6\u00C7\u00C8\u00C9\u00CA\u00CB\u00CC\u00CD\u00CE\u00CF\u00D0\u00D1\u00D2\u00D3\u00D4\u00D5\u00D6\u00D8\u00D9\u00DA\u00DB\u00DC\u00DD\u00DE',
+        E'\u0061\u0062\u0063\u0064\u0065\u0066\u0067\u0068\u0069\u006A\u006B\u006C\u006D\u006E\u006F\u0070\u0071\u0072\u0073\u0074\u0075\u0076\u0077\u0078\u0079\u007A\u0430\u0431\u0432\u0433\u0434\u0435\u0436\u0437\u0438\u0439\u043A\u043B\u043C\u043D\u043E\u043F\u0440\u0441\u0442\u0443\u0444\u0445\u0446\u0447\u0448\u0449\u044A\u044B\u044C\u044D\u044E\u044F\u0450\u0451\u0452\u0453\u0454\u0455\u0456\u0457\u0458\u0459\u045A\u045B\u045C\u045D\u045E\u045F\u0491\u00E0\u00E1\u00E2\u00E3\u00E4\u00E5\u00E6\u00E7\u00E8\u00E9\u00EA\u00EB\u00EC\u00ED\u00EE\u00EF\u00F0\u00F1\u00F2\u00F3\u00F4\u00F5\u00F6\u00F8\u00F9\u00FA\u00FB\u00FC\u00FD\u00FE'
+    )
+$function$;
+
+-- Обрезка как String.prototype.trim: ECMAScript WhiteSpace и LineTerminator.
+CREATE OR REPLACE FUNCTION v3.svod2_js_trim(x text)
+RETURNS text
+LANGUAGE sql IMMUTABLE
+AS $function$
+    SELECT btrim(x, E'\u0009\u000A\u000B\u000C\u000D\u0020\u00A0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u2028\u2029\u202F\u205F\u3000\uFEFF')
+$function$;
+
+-- Запись числа как JS Number::toString. Цифры берутся из float8::text при extra_float_digits = 1
+-- (кратчайшая точная запись), SET в функции изолирует результат от настроек сессии.
+CREATE OR REPLACE FUNCTION v3.svod2_js_number_text(x double precision)
+RETURNS text
+LANGUAGE plpgsql IMMUTABLE
+SET extra_float_digits = 1
+AS $function$
+DECLARE
+    t text;
+    neg boolean := false;
+    mant text;
+    ex integer := 0;
+    int_part text;
+    digits text;
+    lead integer;
+    n integer;
+    k integer;
+    res text;
+BEGIN
+    IF x IS NULL THEN
+        RETURN NULL;
+    END IF;
+    IF x = 0 THEN
+        RETURN '0';
+    END IF;
+    t := x::text;
+    IF t IN ('NaN', 'Infinity', '-Infinity') THEN
+        RETURN t;
+    END IF;
+    IF left(t, 1) = '-' THEN
+        neg := true;
+        t := substr(t, 2);
+    END IF;
+    IF position('e' IN t) > 0 THEN
+        mant := split_part(t, 'e', 1);
+        ex := split_part(t, 'e', 2)::integer;
+    ELSE
+        mant := t;
+    END IF;
+    IF position('.' IN mant) > 0 THEN
+        int_part := split_part(mant, '.', 1);
+    ELSE
+        int_part := mant;
+    END IF;
+    digits := replace(mant, '.', '');
+    lead := length(digits) - length(ltrim(digits, '0'));
+    digits := ltrim(digits, '0');
+    digits := rtrim(digits, '0');
+    n := length(int_part) + ex - lead;
+    k := length(digits);
+    IF n >= k AND n <= 21 THEN
+        res := digits || repeat('0', n - k);
+    ELSIF n > 0 AND n <= 21 THEN
+        res := substr(digits, 1, n) || '.' || substr(digits, n + 1);
+    ELSIF n > -6 AND n <= 0 THEN
+        res := '0.' || repeat('0', -n) || digits;
+    ELSE
+        res := substr(digits, 1, 1);
+        IF k > 1 THEN
+            res := res || '.' || substr(digits, 2);
+        END IF;
+        res := res || 'e' || CASE WHEN n - 1 >= 0 THEN '+' ELSE '-' END || abs(n - 1)::text;
+    END IF;
+    IF neg THEN
+        res := '-' || res;
+    END IF;
+    RETURN res;
+END
+$function$;
+
+-- Компактная проекция data строки свода 2: jsonb_strip_nulls по перечисленным путям.
+CREATE OR REPLACE FUNCTION v3.svod2_compact(d jsonb)
+RETURNS jsonb
+LANGUAGE sql IMMUTABLE
+AS $function$
+    SELECT jsonb_strip_nulls(jsonb_build_object(
+        'line_id', d #> '{line_id}',
+        'header', jsonb_build_object(
+            'source_form', d #> '{header,source_form}',
+            'source_id', d #> '{header,source_id}',
+            'smeta_type', d #> '{header,smeta_type}',
+            'smeta_direction', d #> '{header,smeta_direction}',
+            'org_name', d #> '{header,org_name}',
+            'name', d #> '{header,name}',
+            'item_id', d #> '{header,item_id}',
+            'num_group', d #> '{header,num_group}',
+            'justification', d #> '{header,justification}'
+        ),
+        'plan', jsonb_build_object(
+            'plan_q1', d #> '{plan,plan_q1}',
+            'plan_q2', d #> '{plan,plan_q2}',
+            'plan_q3', d #> '{plan,plan_q3}',
+            'plan_q4', d #> '{plan,plan_q4}'
+        ),
+        'allocation', jsonb_build_object(
+            'internal_order', d #> '{allocation,internal_order}',
+            'property_object', d #> '{allocation,property_object}'
+        ),
+        'sequestration', jsonb_build_object(
+            'DFIP', jsonb_build_object(
+                'adj_q1', d #> '{sequestration,DFIP,adj_q1}',
+                'adj_q2', d #> '{sequestration,DFIP,adj_q2}',
+                'adj_q3', d #> '{sequestration,DFIP,adj_q3}',
+                'adj_q4', d #> '{sequestration,DFIP,adj_q4}'
+            )
+        ),
+        'reserve', jsonb_build_object(
+            'amount_q1', d #> '{reserve,amount_q1}',
+            'amount_q2', d #> '{reserve,amount_q2}',
+            'amount_q3', d #> '{reserve,amount_q3}',
+            'amount_q4', d #> '{reserve,amount_q4}'
+        ),
+        'approved', jsonb_build_object(
+            'approved_q1', d #> '{approved,approved_q1}',
+            'approved_q2', d #> '{approved,approved_q2}',
+            'approved_q3', d #> '{approved,approved_q3}',
+            'approved_q4', d #> '{approved,approved_q4}'
+        ),
+        'contract_detail', jsonb_build_object(
+            'counterparty', d #> '{contract_detail,counterparty}',
+            'reference', d #> '{contract_detail,reference}',
+            'subject', d #> '{contract_detail,subject}',
+            'currency', d #> '{contract_detail,currency}',
+            'ceiling_amount', d #> '{contract_detail,ceiling_amount}',
+            'expenses_q1', d #> '{contract_detail,expenses_q1}',
+            'expenses_q2', d #> '{contract_detail,expenses_q2}',
+            'expenses_q3', d #> '{contract_detail,expenses_q3}',
+            'expenses_q4', d #> '{contract_detail,expenses_q4}',
+            'vat_rate', d #> '{contract_detail,vat_rate}',
+            'deadline', d #> '{contract_detail,deadline}'
+        ),
+        'q1', jsonb_build_object(
+            'adj_current', d #> '{q1,adj_current}',
+            'adj_ssp', d #> '{q1,adj_ssp}',
+            'adj_rf', d #> '{q1,adj_rf}',
+            'adj_reserve', d #> '{q1,adj_reserve}',
+            'payment_date', d #> '{q1,payment_date}',
+            'payment_amount', d #> '{q1,payment_amount}',
+            'payment_amount_ho', d #> '{q1,payment_amount_ho}',
+            'payment_amount_rf', d #> '{q1,payment_amount_rf}',
+            'payment_act', d #> '{q1,payment_act}',
+            'booking_amount', d #> '{q1,booking_amount}',
+            'actual_m1', d #> '{q1,actual_m1}',
+            'actual_m2', d #> '{q1,actual_m2}',
+            'actual_m3', d #> '{q1,actual_m3}',
+            'transfer_to_q2', d #> '{q1,transfer_to_q2}',
+            'transfer_to_q3', d #> '{q1,transfer_to_q3}',
+            'transfer_to_q4', d #> '{q1,transfer_to_q4}',
+            'transfer_to_economy', d #> '{q1,transfer_to_economy}'
+        ),
+        'q2', jsonb_build_object(
+            'adj_current', d #> '{q2,adj_current}',
+            'adj_ssp', d #> '{q2,adj_ssp}',
+            'adj_rf', d #> '{q2,adj_rf}',
+            'adj_reserve', d #> '{q2,adj_reserve}',
+            'payment_date', d #> '{q2,payment_date}',
+            'payment_amount', d #> '{q2,payment_amount}',
+            'payment_amount_ho', d #> '{q2,payment_amount_ho}',
+            'payment_amount_rf', d #> '{q2,payment_amount_rf}',
+            'payment_act', d #> '{q2,payment_act}',
+            'booking_amount', d #> '{q2,booking_amount}',
+            'actual_m1', d #> '{q2,actual_m1}',
+            'actual_m2', d #> '{q2,actual_m2}',
+            'actual_m3', d #> '{q2,actual_m3}',
+            'transfer_to_q3', d #> '{q2,transfer_to_q3}',
+            'transfer_to_q4', d #> '{q2,transfer_to_q4}',
+            'transfer_to_economy', d #> '{q2,transfer_to_economy}',
+            'plan_revision_eco_change', d #> '{q2,plan_revision_eco_change}',
+            'plan_revision_item_adj', d #> '{q2,plan_revision_item_adj}',
+            'plan_revision_increase', d #> '{q2,plan_revision_increase}',
+            'plan_revision_sequester', d #> '{q2,plan_revision_sequester}'
+        ),
+        'q3', jsonb_build_object(
+            'adj_current', d #> '{q3,adj_current}',
+            'adj_ssp', d #> '{q3,adj_ssp}',
+            'adj_rf', d #> '{q3,adj_rf}',
+            'adj_reserve', d #> '{q3,adj_reserve}',
+            'payment_date', d #> '{q3,payment_date}',
+            'payment_amount', d #> '{q3,payment_amount}',
+            'payment_amount_ho', d #> '{q3,payment_amount_ho}',
+            'payment_amount_rf', d #> '{q3,payment_amount_rf}',
+            'payment_act', d #> '{q3,payment_act}',
+            'booking_amount', d #> '{q3,booking_amount}',
+            'actual_m1', d #> '{q3,actual_m1}',
+            'actual_m2', d #> '{q3,actual_m2}',
+            'actual_m3', d #> '{q3,actual_m3}',
+            'transfer_to_q4', d #> '{q3,transfer_to_q4}',
+            'transfer_to_economy', d #> '{q3,transfer_to_economy}',
+            'plan_revision_eco_change', d #> '{q3,plan_revision_eco_change}',
+            'plan_revision_item_adj', d #> '{q3,plan_revision_item_adj}',
+            'plan_revision_increase', d #> '{q3,plan_revision_increase}',
+            'plan_revision_sequester', d #> '{q3,plan_revision_sequester}'
+        ),
+        'q4', jsonb_build_object(
+            'adj_current', d #> '{q4,adj_current}',
+            'adj_ssp', d #> '{q4,adj_ssp}',
+            'adj_rf', d #> '{q4,adj_rf}',
+            'adj_reserve', d #> '{q4,adj_reserve}',
+            'payment_date', d #> '{q4,payment_date}',
+            'payment_amount', d #> '{q4,payment_amount}',
+            'payment_amount_ho', d #> '{q4,payment_amount_ho}',
+            'payment_amount_rf', d #> '{q4,payment_amount_rf}',
+            'payment_act', d #> '{q4,payment_act}',
+            'booking_amount', d #> '{q4,booking_amount}',
+            'actual_m1', d #> '{q4,actual_m1}',
+            'actual_m2', d #> '{q4,actual_m2}',
+            'actual_m3', d #> '{q4,actual_m3}',
+            'actual_spod', d #> '{q4,actual_spod}',
+            'plan_revision_eco_change', d #> '{q4,plan_revision_eco_change}',
+            'plan_revision_item_adj', d #> '{q4,plan_revision_item_adj}',
+            'plan_revision_increase', d #> '{q4,plan_revision_increase}',
+            'plan_revision_sequester', d #> '{q4,plan_revision_sequester}'
+        )
+    ))
+$function$;
diff --git a/api/tests/integration/test_svod2_sql.py b/api/tests/integration/test_svod2_sql.py
new file mode 100644
index 0000000..4944dc4
--- /dev/null
+++ b/api/tests/integration/test_svod2_sql.py
@@ -0,0 +1,53 @@
+"""SQL-нормализаторы свода 2 (миграция 0053): регистр, обрезка, запись числа как в JS, компактная проекция."""
+import json
+from pathlib import Path
+
+import pytest
+
+from tests.integration.conftest import legacy_full
+from tests.svod2_oracle import compact_projection
+
+NUM = json.loads(
+    (Path(__file__).resolve().parent.parent / "fixtures" / "js_number_text_vectors.json").read_text(
+        encoding="utf-8"
+    )
+)
+
+
+def test_js_number_text_matches_node_vectors(svod2_sql):
+    for v in NUM:
+        got = svod2_sql(
+            "SELECT v3.svod2_js_number_text((CAST(:x AS jsonb) #>> '{}')::float8) AS t",
+            {"x": v["input"]},
+        )[0][0]
+        assert got == v["js"], v
+
+
+def test_js_number_text_ignores_session_extra_float_digits(svod2_sql):
+    svod2_sql("SET LOCAL extra_float_digits = 0", None)
+    got = svod2_sql("SELECT v3.svod2_js_number_text(0.1::float8 + 0.2::float8) AS t", None)[0][0]
+    assert got == "0.30000000000000004"
+
+
+@pytest.mark.parametrize(
+    "src",
+    ["АБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯ", "ЄІЇЎЂЏҐ", "ABCxyz", "ÀÉÖÞ", "×", "аРЕНДА 1"],
+)
+def test_casefold_matches_js_lower(svod2_sql, src):
+    assert svod2_sql("SELECT v3.svod2_casefold(:s) AS t", {"s": src})[0][0] == src.lower()
+
+
+def test_casefold_independent_of_collation(svod2_sql):
+    got = svod2_sql("""SELECT v3.svod2_casefold('ЁЛКА' COLLATE "C") AS t""", None)[0][0]
+    assert got == "ёлка"
+
+
+def test_js_trim_ecmascript_whitespace(svod2_sql):
+    assert svod2_sql("SELECT v3.svod2_js_trim(:s) AS t", {"s": " 　 x  \t"})[0][0] == "x"
+    assert svod2_sql("SELECT v3.svod2_js_trim(:s) AS t", {"s": "​ x"})[0][0] == "​ x"
+
+
+def test_compact_matches_python_projection(svod2_sql, svod2_data, client, admin_tokens, auth_headers):
+    full = legacy_full(client, "RF", auth_headers(admin_tokens))[0]["data"]
+    got = svod2_sql("SELECT v3.svod2_compact(CAST(:d AS jsonb)) AS c", {"d": json.dumps(full)})[0][0]
+    assert got == compact_projection(full)