fix(analytics): normalize provider aliases to canonical id in usage_history (#13545)

`usage_history` rows are written with the canonical provider id (`resolveProviderId`), both from live `saveRequestUsage` and from the legacy JSON import. Traffic logged under an alias (`af`) and under the id (`api-airforce`) no longer splits one provider into two analytics buckets (#13459).

Maintainer addition: `tests/unit/usage-history-provider-alias-13459.test.ts` saves one row under the alias and one under the id and asserts a single `api-airforce` bucket (fails on the release tip, passes with the fix).

Validated in one consolidated batch of this series (37 PRs boarded together on `release/v3.8.51`): `typecheck:core`, `check:open-sse-typecheck` and `check:dashboard-typecheck` clean; ESLint clean on every changed file; file-size, complexity, cognitive-complexity, changelog-integrity, docs-counts, docs-sync and migration-numbering gates green (only the pre-existing `open-sse/utils/stream.ts` file-size red remains, inherited from the base); 3,743 focused `node:test` cases plus 34 vitest cases green.

Thanks @KooshaPari!

src/lib/usage/migrations.ts

@@ -16,6 +16,7 @@ import { getLegacyDotDataDir, isSamePath } from "../dataPaths";
 import { getAppLogFilePath } from "../logEnv";
 import { protectPayloadForLog } from "../logPayloads";
 import { sanitizePII } from "../piiSanitizer";
+import { resolveProviderId } from "@/shared/constants/providers";
 import { writeCallArtifact, type CallLogArtifact } from "./callLogArtifacts";
 import {
   resolveImportedUsageAccountIdentity,
@@ -333,7 +334,7 @@ export function migrateUsageJsonToSqlite() {
               : resolveOrphanedUsageAccountIdentity(entry.provider, connectionId);
             const identity = resolveImportedUsageAccountIdentity(entry, fallbackIdentity);
             insert.run({
-              provider: entry.provider || null,
+              provider: entry.provider ? resolveProviderId(entry.provider) : null,
               model: entry.model || null,
               connectionId,
               accountKey: identity.accountKey,

src/lib/usage/usageHistory.ts

@@ -8,6 +8,7 @@
  */
 
 import { getDbInstance } from "../db/core";
+import { resolveProviderId } from "@/shared/constants/providers";
 import { protectPayloadForLog } from "../logPayloads";
 import { sanitizeErrorMessage } from "@omniroute/open-sse/utils/errorSanitization.ts";
 import {
@@ -728,7 +729,7 @@ export async function saveRequestUsage(entry: UsageEntry) {
         )
         .get(
           timestamp,
-          entry.provider || null,
+          (entry.provider ? resolveProviderId(entry.provider) : null),
           entry.model || null,
           entry.connectionId || null,
           entry.apiKeyId || null,
@@ -756,7 +757,7 @@ export async function saveRequestUsage(entry: UsageEntry) {
         VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
       `
       ).run(
-        entry.provider || null,
+        (entry.provider ? resolveProviderId(entry.provider) : null),
         entry.model || null,
         entry.connectionId || null,
         accountIdentity.accountKey,

tests/unit/usage-history-provider-alias-13459.test.ts

@@ -0,0 +1,37 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+import fs from "node:fs";
+import os from "node:os";
+import path from "node:path";
+
+// #13459: usage_history rows written under a provider alias ("af") and under the
+// canonical id ("api-airforce") split one provider into two analytics buckets.
+
+const TEST_DATA_DIR = fs.mkdtempSync(path.join(os.tmpdir(), "omniroute-usage-alias-"));
+process.env.DATA_DIR = TEST_DATA_DIR;
+
+const core = await import("../../src/lib/db/core.ts");
+const usageHistory = await import("../../src/lib/usage/usageHistory.ts");
+
+test.after(() => {
+  core.resetDbInstance();
+  fs.rmSync(TEST_DATA_DIR, { recursive: true, force: true, maxRetries: 5, retryDelay: 100 });
+});
+
+test("#13459 saveRequestUsage stores the canonical provider id for an alias", async () => {
+  for (const provider of ["af", "api-airforce"]) {
+    await usageHistory.saveRequestUsage({
+      provider,
+      model: "gpt-4o-mini",
+      tokens: { input: 10, output: 5 },
+      success: true,
+      latencyMs: 100,
+      timestamp: new Date().toISOString(),
+    });
+  }
+  const rows = core
+    .getDbInstance()
+    .prepare("SELECT provider, COUNT(*) AS n FROM usage_history GROUP BY provider")
+    .all() as Array<{ provider: string; n: number }>;
+  assert.deepEqual(rows, [{ provider: "api-airforce", n: 2 }]);
+});