tui: fakturering with invoice form, preview and send

2 files changed, 17 insertions, 1 deletions

diff --git a/docs/PROTOCOL.md b/docs/PROTOCOL.md
index 9789fc6..0f9b8e7 100644
--- a/docs/PROTOCOL.md
+++ b/docs/PROTOCOL.md
@@ -674,6 +674,20 @@ commands. Implemented screens (0.1.0-dev):
   against vouchers on the bank account, with suggestions; Enter matches the
   suggested voucher (or picks another), `u` unmatches, `a`/`Ctrl+N` imports
   a SEB CSV. Phase 1 never books anything.
+- **Fakturor** — invoice list (`invoice.list`, newest first) with number,
+  date, customer, total and status (`utfärdad`/`krediterad`). Ctrl+N opens
+  the form, Enter the detail. The form has the customer picker, invoice/due
+  (due defaults from the customer's payment days) and delivery dates, er/var
+  referens and rows (beskrivning, antal, enhet, à-pris, moms, anm); `F5`
+  previews the real PDF (`invoice.preview`, nothing stored, no number
+  consumed), `Ctrl+Enter` issues (`invoice.issue`) and then asks
+  "Skicka faktura <nr> till <e-post>?". The detail shows header and rows;
+  `p` fetches the stored PDF (`invoice.pdf`) and `s` sends it
+  (`invoice.send`).
+- **Kunder** — the customer register (name, address, postal code, city, VAT
+  number, e-mail, your reference, payment days, notes). Ctrl+N creates,
+  Enter edits (F5 validates with a dry run, Ctrl+Enter saves), `d`
+  archives/reactivates.
 - **Rapporter** — saldobalans, resultaträkning, balansräkning, moms,
   inkomstdeklaration (INK2/SRU), årsredovisning (K2 text draft) and
   kontolista (all accounts with type, moms treatment, SRU and status).
diff --git a/docs/TUI-GUIDELINES.md b/docs/TUI-GUIDELINES.md
index 09605e9..46982ed 100644
--- a/docs/TUI-GUIDELINES.md
+++ b/docs/TUI-GUIDELINES.md
@@ -93,7 +93,9 @@ written compactly as `^N`, `^A`, `^C`, `^R` to save width.
   to the next row's first cell (`Shift-Tab` back). A dim footer callback
   shows one derived line (balance, attachment list) on its own row above the
   hints (`LINES-2`), never over a table row; `\n` in the text becomes a
-  space.
+  space. A cell holding one of a fixed set of values (unit, VAT code) is
+  changed with `Enter`, which opens `tui_choice_prompt` from the row table's
+  key hook; the chosen value stays in the same cell buffer as any other row.
 - Fields with `mask` set are shown as `*` (`tui_form_field.mask`); used for
   passwords. ACTION fields show their `value` when set, else `(lista)`.
 - Header fields plus rows: one `tui_rt_run` with `tui_rt_set_fields` draws