Pass context into loadWebAuthnCredentials to preserve trace ID in warn logs

[Copilot]

loadWebAuthnCredentials used slog.Warn without a context, silently dropping the request's trace ID and any context-propagated fields from the "skipping corrupted passkey credential" log line.

Changes

• handler/passkey.go — Added ctx context.Context as first parameter to loadWebAuthnCredentials; swapped slog.Warn → slog.WarnContext(ctx, ...)
• Call sites — Updated BeginRegistration, FinishRegistration, and FinishAuthentication (including the inner DiscoverableUserHandler closure) to pass r.Context()
• handler/passkey_test.go — Updated two unit-test call sites to pass context.Background()

// before
func loadWebAuthnCredentials(creds []auth.PasskeyCredential) []webauthn.Credential {
    ...
    slog.Warn("skipping corrupted passkey credential", slog.String("id", creds[i].ID))

// after
func loadWebAuthnCredentials(ctx context.Context, creds []auth.PasskeyCredential) []webauthn.Credential {
    ...
    slog.WarnContext(ctx, "skipping corrupted passkey credential", slog.String("id", creds[i].ID))

[Copilot]

Pull request overview

This PR preserves request-scoped logging fields (e.g., trace IDs) for the “skipping corrupted passkey credential” warning by threading context.Context into the loadWebAuthnCredentials helper and switching to slog.WarnContext.

Changes:

• Updated loadWebAuthnCredentials signature to accept ctx context.Context and replaced slog.Warn with slog.WarnContext.
• Updated handler call sites (including the discoverable user handler closure) to pass r.Context().
• Updated unit tests to pass context.Background() at the two direct call sites.

Show a summary per file

File	Description
handler/passkey.go	Propagates request context into the helper and uses context-aware warning logging to preserve trace/context fields.
handler/passkey_test.go	Adjusts tests for the new helper signature by providing a context.

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• Files reviewed: 2/2 changed files
• Comments generated: 0