feat: admin-configurable FINRA download URL

- Add finra_config singleton table (base_url + updated_at)
- Add getFinraBaseUrl() and setFinraBaseUrl() to admin.ts
  Resolution order: DB config > env FINRA_BASE_URL > built-in default
- Add finraConfig query + finraConfigUpdate mutation to admin tRPC router
- Update FinraIngestService.downloadAndIngestFinra to accept optional baseUrl
  param; falls back to getFinraBaseUrl(db) when omitted
- FinraBulkAdapter resolves URL implicitly via the service (no adapter change)
- Add migration #10 for existing DBs

app/server/src/admin/admin.ts

@@ -288,4 +288,19 @@ export function resetQueueBackoff(
     .run(sourceKind);
   recordAudit(db, actorId ?? 'cli', 'queue.reset-backoff', null, { source: sourceKind, cleared: Number(res.changes) });
   return { cleared: Number(res.changes) };
+}
+
+/** Resolve the effective FINRA download URL: DB config > env var > built-in default. */
+export function getFinraBaseUrl(db: DatabaseSync): string {
+  const row = db.prepare("SELECT base_url FROM finra_config WHERE id='singleton'").get() as { base_url: string } | undefined;
+  return row?.base_url ?? process.env.FINRA_BASE_URL ?? 'https://www.finra.org/sites/default/files';
+}
+
+/** Update FINRA download URL in DB config. Returns the new URL. */
+export function setFinraBaseUrl(db: DatabaseSync, baseUrl: string): { baseUrl: string } {
+  const now = new Date().toISOString();
+  db.prepare(
+    "INSERT OR REPLACE INTO finra_config (id, base_url, updated_at) VALUES ('singleton', ?, ?)"
+  ).run(baseUrl, now);
+  return { baseUrl };
 }

app/server/src/db/client.ts

@@ -232,6 +232,17 @@ function runMigrations(db: DatabaseSync): void {
       )
     `);
   } catch { /* ignore */ }
+
+  // 10. FINRA config table for admin-configurable download URL.
+  try {
+    db.exec(`
+      CREATE TABLE IF NOT EXISTS finra_config (
+        id          TEXT PRIMARY KEY DEFAULT 'singleton',
+        base_url    TEXT NOT NULL DEFAULT 'https://www.finra.org/sites/default/files',
+        updated_at  TEXT NOT NULL
+      )
+    `);
+  } catch { /* ignore */ }
 }
 
 let _db: DatabaseSync | null = null;

app/server/src/db/schema.sql

@@ -694,3 +694,10 @@ CREATE TABLE IF NOT EXISTS finra_short_interest (
 
 CREATE INDEX IF NOT EXISTS idx_finra_symbol ON finra_short_interest(symbol);
 CREATE INDEX IF NOT EXISTS idx_finra_settlement ON finra_short_interest(settlement_date);
+
+-- FINRA download configuration (admin-configurable URL).
+CREATE TABLE IF NOT EXISTS finra_config (
+  id          TEXT PRIMARY KEY DEFAULT 'singleton',
+  base_url    TEXT NOT NULL DEFAULT 'https://www.finra.org/sites/default/files',
+  updated_at  TEXT NOT NULL
+);

app/server/src/services/FinraIngestService.ts

@@ -1,6 +1,5 @@
 import type { DatabaseSync } from 'node:sqlite';
-
-const FINRA_BASE_URL = process.env.FINRA_BASE_URL ?? 'https://www.finra.org/sites/default/files';
+import { getFinraBaseUrl } from '../admin/admin.ts';
 
 /** Format a FINRA consolidated-short-interest filename: CAshvol{YYYYMMDD}.txt */
 function finraFilename(settlementDate: string): string {
@@ -64,13 +63,14 @@ function parseFinraFile(
 }
 
 /** Download and ingest a FINRA consolidated-short-interest file.
- *  Returns count of symbols stored. */
+ *  baseUrl resolves from DB config > env FINRA_BASE_URL > built-in default when omitted. */
 export async function downloadAndIngestFinra(
   db: DatabaseSync,
   settlementDate: string,
+  baseUrl?: string,
 ): Promise<{ symbolsStored: number; sourceFile: string; exchanges: string[] }> {
+  const url = baseUrl ?? getFinraBaseUrl(db);
   const filename = finraFilename(settlementDate);
-  const url = `${FINRA_BASE_URL}/${filename}`;
   const ingestedAt = new Date().toISOString();
 
   console.log(`[finra] downloading ${url}`);

app/server/src/trpc/router.ts

@@ -14,7 +14,7 @@ import type { ThesisEvent } from '../thesis/ThesisMonitor.ts';
 import type { OptionsUnlockState } from '../options/ConvexityGate.ts';
 import type { XCookieHealth } from '../adapters/XCookieAdapter.ts';
 import { emaFromCandles, rsi as rsiFn, relativeVolume, macd as macdFn } from '../analysis/indicators.ts';
-import { listUsers, resetPassword, gdprExport, queueHealth, resetQueueBackoff, NotOwnerError, listUserSessions, listAuditLog, queueSecFetch, setUserModules, disableUser, enableUser, deleteUser } from '../admin/admin.ts';
+import { listUsers, resetPassword, gdprExport, queueHealth, resetQueueBackoff, NotOwnerError, listUserSessions, listAuditLog, queueSecFetch, setUserModules, disableUser, enableUser, deleteUser, getFinraBaseUrl, setFinraBaseUrl } from '../admin/admin.ts';
 import { restartServers, type RestartTarget } from '../lib/restart.ts';
 import type { LintResult } from '../services/secDataFetcher.ts';
 import { EdgarAdapter } from '../adapters/EdgarAdapter.ts';
@@ -1466,6 +1466,16 @@ const adminRouter = router({
     if (!sent) throw new TRPCError({ code: 'INTERNAL_SERVER_ERROR', message: 'Failed to send test email.' });
     return { ok: true };
   }),
+
+  /** Get FINRA config (admin-only). */
+  finraConfig: adminProcedure.query(({ ctx }) => ({
+    baseUrl: getFinraBaseUrl(ctx.db),
+  })),
+
+  /** Update FINRA download URL (admin-only). */
+  finraConfigUpdate: adminProcedure
+    .input(z.object({ baseUrl: z.string().url() }))
+    .mutation(({ ctx, input }) => setFinraBaseUrl(ctx.db, input.baseUrl)),
 });