H1+H2: Field technicians had perm_create=1 perm_write=1 on inspection
certs (could forge or edit issued certs). Reduced to read-only - the
visit-report wizard already sudos when creating new certs from a tech
visit. Added rule_inspection_cert_readonly for the dispatcher group so
even dispatchers cannot edit already-issued certs; only the manager can
revoke/correct. Sealed audit trail.
H3: Replaced display:flex / gap (which wkhtmltopdf 0.12 renders as a
vertical stack) with inline-block + margin in the certificate PDF.
Footer uses float left/right for the cert-number / inspector signature
line so the layout survives wkhtmltopdf rendering.
Bumped to 19.0.1.4.1.
Co-authored-by: Cursor <cursoragent@cursor.com>
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