SereneCode: Spec, Type & Contract Verification

Verified UserProfile against SPEC.md up to Level 3. Final verdict:

complete. Getting there took three passes, and the type check found a real bug.

Pass 1: Level 1 (structural) failed

Pass 2: Level 2 (mypy --strict) failed

[FAIL] user.py line 34
Incompatible types in assignment (expression has type "str | None",
variable has type "str") [assignment]

This was more than an annotation problem. update_email stored the

raw address and only normalised the value it returned, so after update_email(" New@Example.COM ") the
profile held " New@Example.COM ". That violates REQ-001.

def update_email(self, new_email: str) -> str:
    """Store a normalised email address and return it."""
    self.email = new_email.strip().lower()
    return self.email

Pass 3: Level 3 (tests and coverage) passed

Serenecode Check — PASSED (verdict: complete)
11 checked, 8 passed, 0 failed, 0 skipped, 3 exempt (2 advisory)

• REQ-001: implemented (Implements: on UserProfile) and tested (Verifies: on test_update_email_normalises)
• __init__ and update_email: 100% line and branch coverage

Still open: 2 dead-code advisories say UserProfile and update_email look unused, because nothing under src/ calls them yet. Do you want me to allowlist them with # allow-unused: <reason>, or leave them until callers exist?

Note: Level 3 means the tests passed and the coverage threshold was met. It doesn't prove the code correct.