diff --git a/backend/src/services/CapitalLedger.ts b/backend/src/services/CapitalLedger.ts
index 3d424f0..2d68206 100644
--- a/backend/src/services/CapitalLedger.ts
+++ b/backend/src/services/CapitalLedger.ts
@@ -1,6 +1,5 @@
 import logger from '../utils/logger.js';
 import { config } from '../config/index.js';
-import { supabaseService } from './SupabaseService.js';
 import { getTradeProfileCapital } from './profileRepository.js';
 import { getCapitalLedger, upsertCapitalLedger } from './capitalLedgerRepository.js';
 
@@ -38,7 +37,7 @@ export class CapitalLedger {
         try {
             const profileCapital = await getTradeProfileCapital(profileId);
             const allocation = toNumeric(allocatedCapital ?? profileCapital?.allocatedCapital ?? config.TOTAL_CAPITAL);
-            const existing = await getCapitalLedger(profileId, supabaseService);
+            const existing = await getCapitalLedger(profileId);
             const nextRecord: CapitalLedgerRecord = {
                 profile_id: profileId,
                 allocated_capital: allocation,
@@ -48,7 +47,7 @@ export class CapitalLedger {
                 updated_at: new Date().toISOString()
             };
 
-            return await upsertCapitalLedger(nextRecord, supabaseService);
+            return await upsertCapitalLedger(nextRecord);
         } catch (err: any) {
             if (this.isRpcNetworkFailure(err)) {
                 logger.error(`[CapitalLedger] ensureLedger network failure for ${profileId}, aborting ledger mutation (fail-closed): ${err.message}`);
@@ -71,7 +70,7 @@ export class CapitalLedger {
     }
 
     public async getLedger(profileId: string): Promise<CapitalLedgerRecord | null> {
-        return getCapitalLedger(profileId, supabaseService);
+        return getCapitalLedger(profileId);
     }
 
     public async reserveForOrder(profileId: string, amount: number): Promise<boolean> {
@@ -86,7 +85,7 @@ export class CapitalLedger {
                 ...ledger,
                 reserved_for_orders: toNumeric(ledger.reserved_for_orders) + amount,
                 updated_at: new Date().toISOString()
-            }, supabaseService);
+            });
         });
         if (result) return true;
 
@@ -114,7 +113,7 @@ export class CapitalLedger {
                 ...ledger,
                 reserved_for_orders: Math.max(0, toNumeric(ledger.reserved_for_orders) - amount),
                 updated_at: new Date().toISOString()
-            }, supabaseService);
+            });
         });
     }
 
@@ -125,7 +124,7 @@ export class CapitalLedger {
                 ...ledger,
                 reserved_for_positions: Math.max(0, toNumeric(ledger.reserved_for_positions) + delta),
                 updated_at: new Date().toISOString()
-            }, supabaseService);
+            });
         });
     }
 
@@ -136,7 +135,7 @@ export class CapitalLedger {
                 ...ledger,
                 realized_pnl: toNumeric(ledger.realized_pnl) + delta,
                 updated_at: new Date().toISOString()
-            }, supabaseService);
+            });
         });
     }
 
@@ -150,7 +149,7 @@ export class CapitalLedger {
                 reserved_for_orders: Math.max(0, toNumeric(reservedOrders)),
                 reserved_for_positions: Math.max(0, toNumeric(reservedPositions)),
                 updated_at: new Date().toISOString()
-            }, supabaseService);
+            });
         });
     }
 
diff --git a/backend/src/services/capitalLedgerRepository.ts b/backend/src/services/capitalLedgerRepository.ts
index ba074f8..ee8eb24 100644
--- a/backend/src/services/capitalLedgerRepository.ts
+++ b/backend/src/services/capitalLedgerRepository.ts
@@ -1,11 +1,9 @@
 import { getContainer } from '@bytelyst/cosmos';
 import { config } from '../config/index.js';
 import logger from '../utils/logger.js';
-import type { supabaseService } from './SupabaseService.js';
+import { supabaseService } from './SupabaseService.js';
 import type { CapitalLedgerRecord } from './CapitalLedger.js';
 
-type LegacySupabaseService = typeof supabaseService;
-
 const CONTAINER_NAME = 'capital_ledgers';
 
 interface CapitalLedgerDocument {
@@ -28,6 +26,10 @@ function isCosmosConfigured(): boolean {
     return Boolean(config.COSMOS_ENDPOINT && config.COSMOS_KEY);
 }
 
+function getLegacyClient() {
+    return supabaseService.getClient();
+}
+
 function toLedgerRecord(doc: Partial<CapitalLedgerDocument> | null | undefined): CapitalLedgerRecord | null {
     const profileId = String(doc?.profile_id || '').trim();
     if (!profileId) return null;
@@ -68,8 +70,8 @@ async function writeToCosmos(record: CapitalLedgerRecord): Promise<CapitalLedger
     return toLedgerRecord(resource as unknown as CapitalLedgerDocument);
 }
 
-async function readFromLegacy(profileId: string, legacyService?: LegacySupabaseService): Promise<CapitalLedgerRecord | null> {
-    const client = legacyService?.getClient?.();
+async function readFromLegacy(profileId: string): Promise<CapitalLedgerRecord | null> {
+    const client = getLegacyClient();
     if (!client) return null;
 
     const { data, error } = await client
@@ -86,18 +88,18 @@ async function readFromLegacy(profileId: string, legacyService?: LegacySupabaseS
     return toLedgerRecord(data as CapitalLedgerDocument);
 }
 
-export async function getCapitalLedger(profileId: string, legacyService?: LegacySupabaseService): Promise<CapitalLedgerRecord | null> {
+export async function getCapitalLedger(profileId: string): Promise<CapitalLedgerRecord | null> {
     if (!profileId) return null;
 
     if (!isCosmosConfigured()) {
-        return readFromLegacy(profileId, legacyService);
+        return readFromLegacy(profileId);
     }
 
     if (isCosmosConfigured()) {
         try {
             const cosmosRecord = await readFromCosmos(profileId);
             if (cosmosRecord) return cosmosRecord;
-            const legacyRecord = await readFromLegacy(profileId, legacyService);
+            const legacyRecord = await readFromLegacy(profileId);
             if (!legacyRecord) return null;
             await writeToCosmos(legacyRecord);
             logger.info(`[CapitalLedgerRepo] Seeded capital ledger ${profileId} from legacy store into Cosmos.`);
@@ -111,8 +113,7 @@ export async function getCapitalLedger(profileId: string, legacyService?: Legacy
 }
 
 export async function upsertCapitalLedger(
-    record: CapitalLedgerRecord,
-    legacyService?: LegacySupabaseService
+    record: CapitalLedgerRecord
 ): Promise<CapitalLedgerRecord | null> {
     if (!record.profile_id) return null;
 
@@ -125,7 +126,7 @@ export async function upsertCapitalLedger(
         }
     }
 
-    const client = legacyService?.getClient?.();
+    const client = getLegacyClient();
     if (!client) return null;
 
     const { data, error } = await client