Replace String() calls with .toString()/.toLocaleString() per ast-grep rule

- Add formatError() helper in CLI to safely handle unknown error types
- Add uniqueTestId() helper for generating unique test identifiers
- Replace String(id) with id.toString() for database ID conversions
- Replace String(n) with n.toLocaleString() for user-facing number formatting
- Fix TypeScript errors in test files (undefined checks, unused variables)
- Update lint commands to include ast-grep scanning

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/cli/src/routes/admin/complete-login.ts

@@ -2,6 +2,7 @@ import type { LocalContext } from "../../context.js";
 import { ORPCError } from "@orpc/client";
 import { buildCommand } from "@stricli/core";
 import { createApiClient } from "../../utils/api-client.js";
+import { formatError } from "../../utils/format-error.js";
 
 interface CompleteLoginFlags {
   email: string;
@@ -21,12 +22,10 @@ async function completeLogin(
     console.log(`Completed login request for: ${flags.email}`);
   } catch (error) {
     if (error instanceof ORPCError) {
-      console.error(`Error [${String(error.code)}]:`, error.message);
+      // eslint-disable-next-line @typescript-eslint/restrict-template-expressions -- ORPCError.code is typed as any
+      console.error(`Error [${error.code}]:`, error.message);
     } else {
-      console.error(
-        "Error:",
-        error instanceof Error ? error.message : String(error),
-      );
+      console.error("Error:", formatError(error));
     }
     this.process.exit(1);
   }

apps/cli/src/routes/auth/login.ts

@@ -2,6 +2,7 @@ import type { LocalContext } from "../../context.js";
 import { buildCommand } from "@stricli/core";
 import { createApiClient } from "../../utils/api-client.js";
 import { readConfig, writeConfig } from "../../utils/config.js";
+import { formatError } from "../../utils/format-error.js";
 
 interface LoginFlags {
   token: string;
@@ -47,10 +48,7 @@ async function login(this: LocalContext, flags: LoginFlags): Promise<void> {
     console.log(`Logged in as ${authStatus.user.email}`);
     console.log("Credentials saved to ~/.config/reviq/credentials.json");
   } catch (error) {
-    console.error(
-      "Login failed:",
-      error instanceof Error ? error.message : String(error),
-    );
+    console.error("Login failed:", formatError(error));
     console.log("\nMake sure your API token is valid.");
     console.log("You can create a new token at: /account/api-tokens");
     this.process.exit(1);

apps/cli/src/routes/auth/status.ts

@@ -2,6 +2,7 @@ import type { LocalContext } from "../../context.js";
 import { buildCommand } from "@stricli/core";
 import { createApiClient } from "../../utils/api-client.js";
 import { getConfigPath, readConfig } from "../../utils/config.js";
+import { formatError } from "../../utils/format-error.js";
 import { TOKEN_PREFIX } from "../../utils/token.js";
 
 function formatDate(date: Date): string {
@@ -14,19 +15,19 @@ function formatRelativeTime(date: Date): string {
   const diffDays = Math.floor(diffMs / (1000 * 60 * 60 * 24));
 
   if (diffDays < 0) {
-    return `${String(Math.abs(diffDays))} days ago`;
+    return `${Math.abs(diffDays).toLocaleString()} days ago`;
   }
   if (diffDays === 0) {
     const diffHours = Math.floor(diffMs / (1000 * 60 * 60));
     if (diffHours <= 0) {
       return "expired";
     }
-    return `in ${String(diffHours)} hours`;
+    return `in ${diffHours.toLocaleString()} hours`;
   }
   if (diffDays === 1) {
     return "tomorrow";
   }
-  return `in ${String(diffDays)} days`;
+  return `in ${diffDays.toLocaleString()} days`;
 }
 
 async function status(this: LocalContext): Promise<void> {
@@ -96,9 +97,7 @@ async function status(this: LocalContext): Promise<void> {
       );
     }
   } catch (error) {
-    console.log(
-      `  Error: ${error instanceof Error ? error.message : String(error)}`,
-    );
+    console.log(`  Error: ${formatError(error)}`);
     console.log(
       "\n  Unable to connect to API. Local credentials may be invalid.",
     );

apps/cli/src/routes/bootstrap.ts

@@ -2,6 +2,7 @@ import type { LocalContext } from "../context.js";
 import { createDb, executeBootstrap } from "@reviq/db";
 import { buildCommand } from "@stricli/core";
 import { writeConfig } from "../utils/config.js";
+import { formatError } from "../utils/format-error.js";
 
 interface BootstrapFlags {
   email: string;
@@ -47,10 +48,7 @@ async function bootstrap(
 
     await db.destroy();
   } catch (error) {
-    console.error(
-      "Error:",
-      error instanceof Error ? error.message : String(error),
-    );
+    console.error("Error:", formatError(error));
     await db.destroy();
     this.process.exit(1);
   }

apps/cli/src/routes/org/add-site.ts

@@ -1,6 +1,7 @@
 import type { LocalContext } from "../../context.js";
 import { buildCommand } from "@stricli/core";
 import { createApiClient } from "../../utils/api-client.js";
+import { formatError } from "../../utils/format-error.js";
 
 interface AddSiteFlags {
   org: string;
@@ -18,10 +19,7 @@ async function addSite(this: LocalContext, flags: AddSiteFlags): Promise<void> {
 
     console.log(`Added site ${flags.domain} to org ${flags.org}`);
   } catch (error) {
-    console.error(
-      "Error:",
-      error instanceof Error ? error.message : String(error),
-    );
+    console.error("Error:", formatError(error));
     this.process.exit(1);
   }
 }

apps/cli/src/routes/org/create.ts

@@ -1,6 +1,7 @@
 import type { LocalContext } from "../../context.js";
 import { buildCommand } from "@stricli/core";
 import { createApiClient } from "../../utils/api-client.js";
+import { formatError } from "../../utils/format-error.js";
 
 interface CreateOrgFlags {
   slug: string;
@@ -24,10 +25,7 @@ async function create(
     console.log(`Created org: ${result.slug}`);
     console.log(`Owner: ${flags.owner}`);
   } catch (error) {
-    console.error(
-      "Error:",
-      error instanceof Error ? error.message : String(error),
-    );
+    console.error("Error:", formatError(error));
     this.process.exit(1);
   }
 }

apps/cli/src/routes/org/list.ts

@@ -1,6 +1,7 @@
 import type { LocalContext } from "../../context.js";
 import { buildCommand } from "@stricli/core";
 import { createApiClient } from "../../utils/api-client.js";
+import { formatError } from "../../utils/format-error.js";
 
 async function list(this: LocalContext): Promise<void> {
   try {
@@ -23,12 +24,9 @@ async function list(this: LocalContext): Promise<void> {
       console.log();
     }
 
-    console.log(`Total: ${String(orgs.length)} organization(s)`);
+    console.log(`Total: ${orgs.length.toLocaleString()} organization(s)`);
   } catch (error) {
-    console.error(
-      "Error:",
-      error instanceof Error ? error.message : String(error),
-    );
+    console.error("Error:", formatError(error));
     this.process.exit(1);
   }
 }

apps/cli/src/routes/user/confirm-email.ts

@@ -1,6 +1,7 @@
 import type { LocalContext } from "../../context.js";
 import { buildCommand } from "@stricli/core";
 import { createApiClient } from "../../utils/api-client.js";
+import { formatError } from "../../utils/format-error.js";
 
 interface ConfirmEmailFlags {
   email: string;
@@ -19,10 +20,7 @@ async function confirmEmail(
 
     console.log(`Confirmed email for: ${flags.email}`);
   } catch (error) {
-    console.error(
-      "Error:",
-      error instanceof Error ? error.message : String(error),
-    );
+    console.error("Error:", formatError(error));
     this.process.exit(1);
   }
 }

apps/cli/src/routes/user/create.ts

@@ -1,6 +1,7 @@
 import type { LocalContext } from "../../context.js";
 import { buildCommand } from "@stricli/core";
 import { createApiClient } from "../../utils/api-client.js";
+import { formatError } from "../../utils/format-error.js";
 
 type OrgRole = "owner" | "admin" | "member";
 
@@ -45,10 +46,7 @@ async function create(
       console.log(`Added to org: ${flags.org} as ${flags.role ?? "member"}`);
     }
   } catch (error) {
-    console.error(
-      "Error:",
-      error instanceof Error ? error.message : String(error),
-    );
+    console.error("Error:", formatError(error));
     this.process.exit(1);
   }
 }

apps/cli/src/utils/format-error.ts

@@ -0,0 +1,14 @@
+/**
+ * Format an unknown error value into a string message.
+ * Handles Error instances, strings, and other types safely.
+ */
+export function formatError(error: unknown): string {
+  if (error instanceof Error) {
+    return error.message;
+  }
+  if (typeof error === "string") {
+    return error;
+  }
+  // eslint-disable-next-line @typescript-eslint/restrict-template-expressions -- intentional unknown coercion
+  return `${error}`;
+}