feat(config): add env validation utility

[maitamdev]

Validates required environment variables on app startup.

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Summary by cubic

Adds a validateEnv utility that checks required Firebase Vite env vars at startup and logs a warning if any are missing. This helps catch misconfiguration early without blocking app boot.

Required keys: VITE_FIREBASE_API_KEY, VITE_FIREBASE_AUTH_DOMAIN, VITE_FIREBASE_PROJECT_ID.

^{Written for commit c1a2cac. Summary will update on new commits.}

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Project	Deployment	Actions	Updated (UTC)
dhv-guiding-light	Building	Preview, Comment	Mar 4, 2026 7:08pm

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Configuration used: defaults

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Run ID: 15716d30-541f-4a58-9846-0014f0636ba7

📥 Commits

Reviewing files that changed from the base of the PR and between 63a8c6c and c1a2cac.

📒 Files selected for processing (1)

• src/utils/envValidation.ts

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• Commit unit tests in branch feat/env-validation

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[cubic-dev-ai]

1 issue found across 1 file

Prompt for AI agents (unresolved issues)

Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="src/utils/envValidation.ts">

<violation number="1" location="src/utils/envValidation.ts:2">
P1: The new env validation utility is dead code because `validateEnv` is never called, so startup validation does not actually happen.</violation>
</file>

_{Reply with feedback, questions, or to request a fix. Tag @cubic-dev-ai to re-run a review.}

[cubic-dev-ai]

P1: The new env validation utility is dead code because validateEnv is never called, so startup validation does not actually happen.

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At src/utils/envValidation.ts, line 2:

<comment>The new env validation utility is dead code because `validateEnv` is never called, so startup validation does not actually happen.</comment>

<file context>
@@ -0,0 +1,7 @@
+// Environment variable validation
+export function validateEnv(): void {
+  const required = ['VITE_FIREBASE_API_KEY', 'VITE_FIREBASE_AUTH_DOMAIN', 'VITE_FIREBASE_PROJECT_ID'];
+  const missing = required.filter(key => !import.meta.env[key]);
</file context>