Treat a Copilot Autofix suggestion as a claim to verify, not a fix to accept

GitHub code scanning flagged SQL injection: user-provided value flows into a database query without sanitization (rule js/sql-injection) in this code, and Copilot Autofix already
proposed a fix. Do not tell me to accept it yet — verify it first, against the actual exploit, not
against whether it makes the alert go away.

AUTOFIX SUGGESTION
Wraps the raw value in the database driver's escape() helper before interpolating it into the query string.

AFFECTED CODE
The searchUsers(query) function in lib/db/users.ts, pasted below, which builds a raw SQL string from the query parameter.

OTHER PLACES THE SAME PATTERN MIGHT APPEAR
buildOrderClause() in the same file interpolates a sort-column parameter into a query string using a similar pattern.

ANSWER IN THIS ORDER
1. State the exact exploit this alert is warning about as a concrete input or request an attacker
   could actually send — not a restatement of the alert's category name. If you cannot construct a
   concrete example, say so rather than describing the risk only in the abstract.
2. Trace whether the Autofix suggestion above genuinely closes that specific exploit path, or only
   makes the code shape the scanner's rule matches on disappear — these are not the same thing, and
   a fix that does the second without the first will pass the scanner while leaving the real
   vulnerability open under a slightly different trigger.
3. Check buildOrderClause() in the same file interpolates a sort-column parameter into a query string using a similar pattern., plus anywhere else in this file or nearby files you can find with
   the same vulnerable pattern, for whether this specific alert covers all of them or only the one
   location it happened to flag — a vulnerable pattern copy-pasted to a second call site is common,
   and static analysis does not reliably catch every instance of an indirect or slightly reshaped
   occurrence.
4. State what a test proving this fix actually closes the exploit would need to assert — that the
   malicious input from step 1 is specifically rejected or safely handled, not merely that the code
   still compiles and the existing tests still pass, since neither of those was ever evidence about
   this particular vulnerability.

ONLY RECOMMEND ACCEPTING AUTOFIX IF
Your answer to step 2 is an unambiguous yes. If it is a partial yes — the fix closes the exploit
for the input you constructed in step 1 but you can construct a second, differently-shaped input
that still gets through — say that explicitly and treat it as a no, not as a fix that mostly works.

IF THE SAME PATTERN APPEARS ELSEWHERE AND IS NOT COVERED BY THIS ALERT
Say so as its own explicit finding, separate from the verification of this specific alert's fix —
a second unflagged instance is not resolved by fixing the one the scanner happened to catch, and
burying that finding inside the verification of an unrelated alert makes it easy to miss when
someone is scanning for whether this specific alert is now resolved.