fix(admin): resolve all 266 TypeScript errors, enable strict build

Eliminate the pre-existing TS errors that were masked by
next.config.js `typescript.ignoreBuildErrors: true`, then turn the flag
OFF so the compiler is a real safety net for future changes. `next build`
and `tsc --noEmit` now pass with 0 errors.

The errors were not cosmetic — several exposed real latent bugs hidden by
the flag, e.g. the drafting-engine ConstraintEnforcer read non-existent
fields (`t.rule.dsfaRequired`, `d.required`, `r.title`), so its DSFA hard
gate and risk-flag checks were silently no-ops; scopeDefaults read
snake_case CompanyProfile fields that never matched the camelCase type
(generator defaults never populated). Both fixed by aligning code to the
current types.

Highlights:
- Vitest globals: add vitest-globals.d.ts (config already had globals:true)
  so the test files type-check; exclude Playwright specs from vitest.
- Add a minimal ambient `pg` module declaration (no @types/pg installed).
- Fix Next 15 route handlers to await Promise params.
- Reconcile drifted types across loeschfristen, compliance-scope, document-
  generator, drafting-engine, vendor-compliance, agent and more.

Pre-existing (NOT caused here, proven by stashing the diff): 3 vitest
logic tests still fail — getNextStep (2) and buildDocumentScope priority (1).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

admin-compliance/app/sdk/rollenkonzept/page.tsx

@@ -74,7 +74,7 @@ export default function RollenkonzeptPage() {
           ) : (
             <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 xl:grid-cols-4 gap-4">
               {mergedRoles.map(role => (
-                <RoleCard key={role.role_key} role={role} onSave={updateRole} onSendTest={sendTestEmail} />
+                <RoleCard key={role.role_key} role={role} onSave={(id, data) => updateRole(id, data).then(() => {})} onSendTest={sendTestEmail} />
               ))}
             </div>
           )}
@@ -130,9 +130,9 @@ export default function RollenkonzeptPage() {
           loading={reviewHook.loading}
           statusFilter={reviewHook.statusFilter}
           onFilterChange={reviewHook.setStatusFilter}
-          onApprove={reviewHook.approveReview}
-          onReject={reviewHook.rejectReview}
-          onSendNotification={reviewHook.sendNotification}
+          onApprove={(id) => reviewHook.approveReview(id).then(() => {})}
+          onReject={(id, comment) => reviewHook.rejectReview(id, comment).then(() => {})}
+          onSendNotification={(id) => reviewHook.sendNotification(id).then(() => {})}
         />
       )}
     </div>