feat: another balance and bug fix pass (#238)

Working through open issues — fixes, balance changes, and features.

## Closed

- Closes #161
- Closes #181
- Closes #191
- Closes #199
- Closes #201
- Closes #202
- Closes #203
- Closes #204
- Closes #205
- Closes #206
- Closes #208
- Closes #211
- Closes #212
- Closes #213
- Closes #214
- Closes #216
- Closes #219
- Closes #220
- Closes #221
- Closes #222
- Closes #224
- Closes #225
- Closes #226
- Closes #228
- Closes #229
- Closes #230
- Closes #231
- Closes #232
- Closes #233
- Closes #234
- Closes #235
- Closes #236

✨ This PR was created with help from Hikari~ 🌸

Reviewed-on: #238
Co-authored-by: Hikari <hikari@nhcarrigan.com>
Co-committed-by: Hikari <hikari@nhcarrigan.com>

apps/web/src/utils/logError.ts

@@ -5,14 +5,22 @@
  * @author Naomi Carrigan
  */
 /* eslint-disable no-console -- Errors are forwarded to backend via the overridden console.error */
+import { ValidationError } from "../api/client.js";
 
 /**
  * Logs an error to the backend telemetry service.
- * Accepts the same arguments as console.error — conventionally a context string
- * followed by the error value.
- * @param logArguments - The values to log, forwarded directly to console.error.
+ * ValidationErrors (4xx API rejections) are downgraded to console.warn so they
+ * are not forwarded to the error-email pipeline — they are expected server responses.
+ * @param logArguments - The values to log, forwarded directly to console.error or console.warn.
  */
 const logError = (...logArguments: Array<unknown>): void => {
+  const isValidation = logArguments.some((argument) => {
+    return argument instanceof ValidationError;
+  });
+  if (isValidation) {
+    console.warn(...logArguments);
+    return;
+  }
   console.error(...logArguments);
 };