feat(invoices): ROT/RUT begäran status as a column and filter in the invoice list (#2434)

An invoice's begäran state (Att begära, Skapad, Uppladdad, Beviljad, Delvis
beviljad, Avslagen) was only visible one invoice at a time or inside the
payout dialog. The list now embeds the begäran behind each invoice, shows
the state in a ROT/RUT column and filters on it through a third
ContextPicker (?rotrut=), both gated on rot_rut_enabled or an invoiced
deduction. One predicate (lib/invoices/rot-rut-list-status.ts) feeds the
column, the filter and its counts. Normal states read as muted text; only
a partial approval and an avslag get a chip.

Closes #2426


Claude-Session: https://claude.ai/code/session_0179bdetHyofL6ATfQxB5wP5

Co-authored-by: Jakob Wennberg <311770904+jakobwennberg-oss@users.noreply.github.com>
Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>

messages/en.json

@@ -6712,6 +6712,7 @@
     "rot_rut_status_partially_paid": "Partly approved",
     "rot_rut_status_rejected": "Rejected",
     "rot_rut_status_cancelled": "Cancelled",
+    "rot_rut_status_claimable": "To request",
     "rot_rut_download_again": "Download again",
     "rot_rut_cancel_request": "Cancel",
     "rot_rut_mark_uploaded": "Mark as uploaded",
@@ -6778,6 +6779,7 @@
     "th_due": "Due",
     "th_amount": "Amount",
     "th_status": "Status",
+    "th_rot_rut": "ROT/RUT",
     "sort_by": "Sort by {column}",
     "create_invoice_desc": "Regular customer invoice",
     "create_recurring": "Recurring invoice",
@@ -6808,6 +6810,9 @@
     "status_paid_date": "Paid {date}",
     "status_picker_aria": "Filter by status",
     "group_picker_aria": "Group invoices",
+    "rot_rut_filter_aria": "Filter by ROT/RUT request",
+    "rot_rut_filter_label": "ROT/RUT",
+    "rot_rut_filter_all": "All",
     "group_by": "Group",
     "group_status": "Status",
     "group_customer": "Customer",

messages/sv.json

@@ -6712,6 +6712,7 @@
     "rot_rut_status_partially_paid": "Delvis beviljad",
     "rot_rut_status_rejected": "Avslagen",
     "rot_rut_status_cancelled": "Avbruten",
+    "rot_rut_status_claimable": "Att begära",
     "rot_rut_download_again": "Hämta igen",
     "rot_rut_cancel_request": "Avbryt",
     "rot_rut_mark_uploaded": "Markera uppladdad",
@@ -6778,6 +6779,7 @@
     "th_due": "Förfaller",
     "th_amount": "Belopp",
     "th_status": "Status",
+    "th_rot_rut": "ROT/RUT",
     "sort_by": "Sortera efter {column}",
     "create_invoice_desc": "Vanlig kundfaktura",
     "create_recurring": "Återkommande faktura",
@@ -6808,6 +6810,9 @@
     "status_paid_date": "Betald {date}",
     "status_picker_aria": "Filtrera på status",
     "group_picker_aria": "Gruppera fakturor",
+    "rot_rut_filter_aria": "Filtrera på ROT/RUT-begäran",
+    "rot_rut_filter_label": "ROT/RUT",
+    "rot_rut_filter_all": "Alla",
     "group_by": "Gruppera",
     "group_status": "Status",
     "group_customer": "Kund",