feat: remove AI extensions, restructure settings, and add atomic voucher commits (#157)

Remove AI-dependent extensions (ai-chat, ai-categorization, receipt-ocr,
invoice-inbox) and their infrastructure (lib/ai/*, ai-consent, LangChain/
Anthropic/OpenAI deps) to simplify core and reduce bundle size.

Restructure monolithic settings page into dedicated sub-pages (company,
bookkeeping, invoicing, tax, banking, api, account, team, templates) with
shared layout and sidebar navigation.

Add atomic commit_journal_entry RPC so voucher number increment and status
update happen in a single transaction — prevents burned numbers on constraint
failures. Add continuity check report and voucher gap explanation tracking.

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

components/settings/CompanyInfoForm.tsx

@@ -0,0 +1,105 @@
+'use client'
+
+import { Input } from '@/components/ui/input'
+import { Label } from '@/components/ui/label'
+import type { CompanySettings } from '@/types'
+
+interface CompanyInfoFormProps {
+  settings: CompanySettings
+}
+
+export function CompanyInfoForm({ settings }: CompanyInfoFormProps) {
+  return (
+    <section className="space-y-4">
+      <h2 className="text-sm font-medium uppercase tracking-wider text-muted-foreground">
+        Företagsuppgifter
+      </h2>
+
+      <div className="grid grid-cols-1 sm:grid-cols-2 gap-4">
+        <div className="space-y-2">
+          <Label htmlFor="company_name">Företagsnamn</Label>
+          <Input
+            id="company_name"
+            name="company_name"
+            defaultValue={settings.company_name || ''}
+            disabled={settings.onboarding_complete === true}
+          />
+          {settings.onboarding_complete && (
+            <p className="text-xs text-muted-foreground">Kan inte ändras efter att kontot skapats</p>
+          )}
+        </div>
+        <div className="space-y-2">
+          <Label htmlFor="org_number">Organisationsnummer</Label>
+          <Input
+            id="org_number"
+            name="org_number"
+            defaultValue={settings.org_number || ''}
+            disabled={settings.onboarding_complete === true}
+          />
+          {settings.onboarding_complete && (
+            <p className="text-xs text-muted-foreground">Kan inte ändras efter att kontot skapats</p>
+          )}
+        </div>
+      </div>
+
+      <div className="space-y-2">
+        <Label htmlFor="address_line1">Adress</Label>
+        <Input
+          id="address_line1"
+          name="address_line1"
+          defaultValue={settings.address_line1 || ''}
+        />
+      </div>
+
+      <div className="grid grid-cols-1 sm:grid-cols-2 gap-4">
+        <div className="space-y-2">
+          <Label htmlFor="postal_code">Postnummer</Label>
+          <Input
+            id="postal_code"
+            name="postal_code"
+            defaultValue={settings.postal_code || ''}
+          />
+        </div>
+        <div className="space-y-2">
+          <Label htmlFor="city">Ort</Label>
+          <Input
+            id="city"
+            name="city"
+            defaultValue={settings.city || ''}
+          />
+        </div>
+      </div>
+
+      <div className="grid grid-cols-1 sm:grid-cols-2 gap-4">
+        <div className="space-y-2">
+          <Label htmlFor="phone">Telefon</Label>
+          <Input
+            id="phone"
+            name="phone"
+            type="tel"
+            defaultValue={settings.phone || ''}
+          />
+        </div>
+        <div className="space-y-2">
+          <Label htmlFor="email">E-post</Label>
+          <Input
+            id="email"
+            name="email"
+            type="email"
+            defaultValue={settings.email || ''}
+          />
+        </div>
+      </div>
+
+      <div className="space-y-2">
+        <Label htmlFor="website">Webbplats</Label>
+        <Input
+          id="website"
+          name="website"
+          defaultValue={settings.website || ''}
+          placeholder="https://"
+        />
+      </div>
+    </section>
+  )
+}