diff --git a/CHANGELOG.md b/CHANGELOG.md
index 867c160..e906c1c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,15 @@
 # Changelog
 
+## 0.5.0
+
+- `client.auth.loginWithCustom({ customData, region?, language?, nickname? })`
+  — custom webhook auth, same token + runtime start as `loginWithDevice`.
+- `QuestMetrics.purchaseOffer` / `purchaseItem` helpers for the shop purchase
+  metric format.
+- Typecheck against regenerated models: `listQuests` no longer takes a body,
+  battle-pass `track` is `'free' | 'premium'`, scenario run status has no
+  `unknown_run`.
+
 ## 0.4.0
 
 - Fixed `BattlePassLevelSession.level` reading node data key `level` — the
diff --git a/README.md b/README.md
index e379aaf..4c52a03 100644
--- a/README.md
+++ b/README.md
@@ -52,7 +52,7 @@ client.dispose();
 
 | Area | Access |
 |---|---|
-| Auth | `client.auth.loginWithDevice()`, `client.auth.logout()`, `client.auth.isAuthenticated`, `client.auth.onAuthStateChange(cb)` |
+| Auth | `client.auth.loginWithDevice()`, `client.auth.loginWithCustom({ customData })`, `client.auth.logout()`, `client.auth.isAuthenticated`, `client.auth.onAuthStateChange(cb)` |
 | Player / wallets | `client.player` (observable) |
 | Inventory | `client.inventory` (observable, catalog-merged) |
 | Catalog | `client.catalog` (observable) |
diff --git a/package-lock.json b/package-lock.json
index ee48b4f..be2ea7c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@rudder/js-sdk",
-  "version": "0.1.0",
+  "version": "0.5.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@rudder/js-sdk",
-      "version": "0.1.0",
+      "version": "0.5.0",
       "devDependencies": {
         "@types/node": "^26.1.1",
         "jsdom": "^29.1.1",
diff --git a/package.json b/package.json
index 7a39b03..2160274 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@rudder/js-sdk",
-  "version": "0.4.0",
+  "version": "0.5.0",
   "publishConfig": {
     "registry": "https://hub.rudder.build/api/packages/rudder/npm/"
   },
diff --git a/src/effects/EffectsCenter.ts b/src/effects/EffectsCenter.ts
index 4c7b466..1e45eba 100644
--- a/src/effects/EffectsCenter.ts
+++ b/src/effects/EffectsCenter.ts
@@ -79,7 +79,7 @@ export interface QuestEffect {
 export interface BattlePassEffect {
   getProgress(): Promise<GetBattlePassProgressResponse>;
   addXp(source: string, amount: number): Promise<AddBattlePassXpResponse>;
-  claimReward(level: number, track?: string): Promise<ClaimBattlePassRewardResponse>;
+  claimReward(level: number, track?: 'free' | 'premium'): Promise<ClaimBattlePassRewardResponse>;
   purchasePremium(): Promise<PurchaseBattlePassPremiumResponse>;
   levelUp(): Promise<void>;
   end(): Promise<void>;
diff --git a/src/quests/QuestMetrics.ts b/src/quests/QuestMetrics.ts
index 7c1d5db..2828568 100644
--- a/src/quests/QuestMetrics.ts
+++ b/src/quests/QuestMetrics.ts
@@ -1,9 +1,9 @@
 /**
  * QuestMetrics — builders for the quest metric strings known to the platform.
  *
- * Purchase metrics are reported automatically by the shop purchase fan-out,
- * so these helpers exist mainly to name the format instead of hardcoding it.
- * Any other metric is a custom string reported via
+ * Purchase metrics are reported automatically server-side by the shop
+ * purchase fan-out, so these helpers exist mainly to name the format
+ * instead of hardcoding it. Any other metric is a custom string reported via
  * {@link QuestsService.reportProgress}.
  */
 
diff --git a/src/quests/QuestsService.ts b/src/quests/QuestsService.ts
index 159fd84..73a7ce7 100644
--- a/src/quests/QuestsService.ts
+++ b/src/quests/QuestsService.ts
@@ -15,7 +15,7 @@ export class QuestsService {
 
   /** Lists the player's quests with per-objective progress and rewards. */
   async list(): Promise<Quest[]> {
-    const response = await api.listQuests(this.ctx, {});
+    const response = await api.listQuests(this.ctx);
     return response.quests ?? [];
   }
 
diff --git a/src/scenario/ScenarioService.ts b/src/scenario/ScenarioService.ts
index 06d79ad..855e615 100644
--- a/src/scenario/ScenarioService.ts
+++ b/src/scenario/ScenarioService.ts
@@ -136,8 +136,9 @@ export class ScenarioService<TConfig extends RemoteConfigShape = RemoteConfigSha
 
         try {
           const response = await api.getScenarioRun(this.ctx, { runId: saved.runId });
+          const status: string | undefined = response?.status;
 
-          if (response?.status === 'unknown_run' || response?.status === 'expired') {
+          if (status === 'unknown_run' || status === 'expired') {
             continue;
           }
 
@@ -466,8 +467,9 @@ export class ScenarioService<TConfig extends RemoteConfigShape = RemoteConfigSha
         let reconciled = false;
         try {
           const reconcile = await api.getScenarioRun(this.ctx, { runId: run.runId });
+          const reconcileStatus: string | undefined = reconcile?.status;
 
-          if (reconcile?.status === 'unknown_run' || reconcile?.status === 'expired') {
+          if (reconcileStatus === 'unknown_run' || reconcileStatus === 'expired') {
             this.runs.delete(run.runId);
             await this.persist();
             reconciled = true;
diff --git a/src/scenario/engine/sessions.ts b/src/scenario/engine/sessions.ts
index fcc1172..78802e8 100644
--- a/src/scenario/engine/sessions.ts
+++ b/src/scenario/engine/sessions.ts
@@ -278,7 +278,7 @@ export class BattlePassSession {
   }
 
   /** Claims a tier reward at a reached level. */
-  claimReward(level: number, track?: string): Promise<ClaimBattlePassRewardResponse> {
+  claimReward(level: number, track?: 'free' | 'premium'): Promise<ClaimBattlePassRewardResponse> {
     const { scenarioId, nodeId, runId } = this.ids();
     return this.battlePass.claimReward({ scenarioId, nodeId, level, track, runId });
   }
diff --git a/test/e2e/remoteConfig.e2e.test.ts b/test/e2e/remoteConfig.e2e.test.ts
index e616f58..f664845 100644
--- a/test/e2e/remoteConfig.e2e.test.ts
+++ b/test/e2e/remoteConfig.e2e.test.ts
@@ -16,7 +16,7 @@ interface GameRemoteConfig extends Record<string, unknown> {
   missing_declared: string;
 }
 
-function cfg(key: string, value: string, valueType: string, active = true): RemoteConfig {
+function cfg(key: string, value: string, valueType: NonNullable<RemoteConfig['valueType']>, active = true): RemoteConfig {
   return { key, value, valueType, active };
 }