🔒 Restrict read access to authenticated users for configs_prod

[eng618]

🎯 What:

Fixed an overly permissive Firestore read access vulnerability on the production configurations (configs_prod) collection in apps/parable-bloom/firestore.rules.

⚠️ Risk:

Allowing public read access (allow read: if true;) to the production configuration collection permits unauthorized external entities/anonymous users to read potentially sensitive system configuration details, schemas, modules registry, OTA update metadata, and logical level mappings. This could expose system architectural details and facilitate targeted attacks or reverse engineering of the application's config schema.

🛡️ Solution:

Tightened read permissions in the match /configs_prod/{configId} block in Firestore security rules to only allow authenticated requests (allow read: if request.auth != null;). This ensures that only verified users signed in through Firebase Auth can retrieve the production app configuration details, minimizing the exposure surface while preserving standard user gameplay capability.

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PR created automatically by Jules for task 3791365302711408600 started by @eng618

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[codacy-production]

Up to standards ✅

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