v3 port of the v2 authorization fixes.
- Notes IDOR (GHSA-85wc): NotePolicy checks the note's company_id and
NotesController passes the bound model to authorize() on show/update/destroy.
- Estimate<->Invoice convert IDOR (GHSA-j2vg): EstimatesController::convertToInvoice
and InvoicesController::convertToEstimate authorize 'view' on the source
document before creating the target.
- Member bulk-delete (GHSA-wxrv): MembersController scopes ids via
User::whereCompany() before MemberService::delete.
Adds feature tests for cross-company 403s + same-company happy paths.
V1/Admin -> Company (company-scoped controllers)
V1/SuperAdmin -> Admin (platform-wide admin controllers)
V1/Customer -> CustomerPortal (customer-facing portal)
V1/Installation -> Setup (installation wizard)
V1/PDF -> Pdf (consistent casing)
V1/Modules -> Modules (drop V1 prefix)
V1/Webhook -> Webhook (drop V1 prefix)
The V1 prefix served no purpose - API versioning is in the route prefix
(/api/v1/), not the controller namespace. "Admin" was misleading for
company-scoped controllers. "SuperAdmin" is now simply "Admin" for
platform administration.
