Follow-up: Address Claude bot review comments on PR #6641

gistfile0.txt

# Follow-up: Claude Bot Review Comments on PR #6641

## Context
PR #6641 adds employee mode credit bypass. Claude bot flagged three issues.
Two were addressed in the PR; the "critical" one is a false positive.

## 🔴 "Critical": Per-step credit deduction not bypassed
**Status: False positive — no action needed**

Claude claims the per-step deduction block still runs for employee mode.
This is wrong. The bypass returns `billingEnabled: false`, which propagates to:

```
Line 305: const billingEnabled = creditCheck.billingEnabled  // false
Line 451: if (resolvedWorkspaceId && totalCredits > 0 && billingEnabled) { // false → skipped
```

The entire deduction block is gated by `billingEnabled`. Setting it to `false`
in the early return skips both the initial check AND per-step deduction.
This is the same mechanism used by the existing `!billingEnabled` bypass.

## 🟡 "Important": Unnecessary DB query for tier
**Status: Addressed in PR**

Removed `creditBalanceService.getWorkspaceTier()` call, replaced with
static `tier: 'employee'` string. One fewer DB query per employee execution.

## 🟢 "Minor": Comment clarity
**Status: Addressed in PR**

Updated comment to explain both the bypass and the security model
(feature flag verification).