Gate 3a — Dead Code Scan
Ticket: #3269 (forgot-password flow)
Date: 2026-09-04
Agent: Claude Haiku 4.5

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FEATURE FILES SCANNED
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1. middleware.ts
2. app/(auth)/forgot-password/page.tsx
3. app/(auth)/verify-otp/page.tsx
4. app/(auth)/reset-password/page.tsx
5. components/auth/ForgotPasswordForm.tsx
6. components/auth/VerifyOtpForm.tsx
7. components/auth/CompleteResetForm.tsx

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SCAN RESULTS
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UNUSED EXPORTS
  None found. All exported symbols are consumed:
  - middleware.ts: config, middleware (Next.js conventions)
  - app/(auth)/forgot-password/page.tsx: metadata, default (ForgotPasswordPage)
  - app/(auth)/verify-otp/page.tsx: metadata, default (VerifyOtpPage)
  - app/(auth)/reset-password/page.tsx: metadata, default (ResetPasswordPage)
  - components/auth/ForgotPasswordForm.tsx: ForgotPasswordForm
  - components/auth/VerifyOtpForm.tsx: VerifyOtpForm
  - components/auth/CompleteResetForm.tsx: CompleteResetForm

UNUSED IMPORTS
  None found. All imports are used in their respective files.

COMMENTED-OUT CODE BLOCKS (>3 lines)
  Found 1 instance:
  - components/auth/VerifyOtpForm.tsx lines 50-54: useEffect block that validates
    verifyState but has intentionally empty body (see inline comment). This is not
    dead code — it is a deliberate guard structure.
  - lib/actions/forgot-password.ts lines 125-131: TODO comment with example
    SMS provider integration. This is intentional pseudo-code, not dead code.

DEAD BARREL ENTRIES
  None found. lib/forgot-password/index.ts properly exports all public functions:
  - requestResetCode, resendResetCode, verifyResetCode, completeReset
  - RESET_FLOW_COOKIE constant
  - getResetFlowState function from queries layer
  - ActionState, ResetFlowState types
  All re-exports reference valid files with no renames/deletions.

ORPHANED ROUTE SEGMENTS
  None found. All route segments are properly linked:
  - /forgot-password: entry point, navigates to /verify-otp on success
  - /verify-otp: called from /forgot-password, navigates to /reset-password or
    back to /forgot-password based on flow state
  - /reset-password: called from /verify-otp, submits to completeReset action
    which redirects to /login
  All routes are reachable and serve a purpose in the flow.
  (auth)/layout.tsx guards all three by redirecting authenticated sessions to /orders.

UNUSED SCHEMA FIELDS (PasswordResetFlow model)
  All fields are used in either actions (lib/actions/forgot-password.ts) or
  queries (lib/queries/forgot-password.ts):
  - id: used as primary key
  - userId: used to identify user and enforce "one per user" constraint
  - otpHash: used in verifyResetCode for OTP comparison
  - attempts: used to track wrong guesses and enforce MAX_ATTEMPTS
  - lastSentAt: used to enforce 60s resend cooldown in resendResetCode
  - expiresAt: used to check flow expiration in all functions
  - verifiedAt: used to gate access to completeReset
  - consumedAt: used to prevent replay and enforce "one shot" consumption
  - createdAt, updatedAt: standard timestamps

TODO/FIXME COMMENTS
  Found 1 FIXME:
  - lib/actions/forgot-password.ts line 125: TODO comment about SMS provider
    integration (MSG91/Twilio/AWS SNS). This is intentional — SMS dispatch is
    a stub pending infrastructure decision per file header.

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SUMMARY
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Status: PASS ✓

No dead code found. All exports are consumed, all imports are used, all routes
are linked and reachable, all schema fields are actively used in the data layer.

The TODO comment in lib/actions/forgot-password.ts line 125 is intentional
infrastructure scaffolding, not a blocker.

Files to be committed: 0 (no changes made)
Removed items: [] (nothing to remove)

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