LowFile-scopeDart Plug & play

Remove unused configuration variables

Delete dead configuration fields and env flags; keep only variables that change behavior.

Why this matters

Avoids confusion and prevents stale toggles from drifting.

Side-by-side examples engineers can pattern-match during review.

Avoid

const String UNUSED_CHANNEL = 'beta'; // never read

Prefer

// remove UNUSED_CHANNEL or wire it into behavior where needed

Bad

final mode = 'dev'; // unused

Good

final mode = getModeFromEnv(); if (mode == 'dev') enableDevTools();

From the same buckets as this rule.

High
Add explicit environment variable checks
Validate required runtime env vars at container start via an entrypoint script; exit with a clear message on missing values.
config-environmentcontainer-docker-hygiene+1
High
Encrypt PII at rest using application-layer crypto
Encrypt sensitive columns (e.g., email, phone) with managed keys; ensure DB connection enforces TLS. Store only ciphertext; compare via deterministic token/hashes when needed. (GDPR Art. 32)
compliance-gdprsecurity-hardening+1
High
Enforce retention with explicit TTL per data category
PII tables must include an expires_at (or retention_policy) column and a scheduled deletion/archival job aligned to data category. No indefinite retention. (GDPR Art. 5(1)(e))
compliance-gdprprivacy-pii+2