not bad

README.md

@@ -15,6 +15,12 @@ The page calls the webhook directly:
 https://brandize.app.n8n.cloud/webhook/bi-dashboard
 ```
 
+via a **POST** request with a JSON body:
+
+```json
+{ "query": "Summe je Abgangsland", "month": "2026-SEP" }
+```
+
 The webhook sends CORS headers (it reflects the request `Origin`, including
 `null` for `file://`), so a direct browser call works.
 
@@ -24,9 +30,11 @@ The left sidebar groups reports by topic:
 
 - **Amazon** → *Umsatz je Abgangsland* (Brutto inkl. USt je Abgangsland)
 - **Amazon** → *VAT Summary* (USt-Übersicht je Land)
-- **ODOO** → *Dashboard* (placeholder, to follow)
+- **ODOO** → *Rechnungen pro Monat* (Pivot über Odoo-Rechnungen)
+- **Gesamt** → *Alle Rechnungen pro Monat* (PivotTable.js-Experiment)
+- **Schweiz** → *Quartal Schweiz* (AMAZON + ODOO, Lieferung in die Schweiz)
 
-Both groups start collapsed, so no submenu is visible when the page opens.
+All groups start collapsed, so no submenu is visible when the page opens.
 Clicking a topic expands its submenu; clicking a submenu item switches the
 view.
 
@@ -49,8 +57,11 @@ Gesamt row:
 
 - *Umsatz je Abgangsland* → `umsatz-je-abgangsland_YYYY-MMM.csv`
 - *VAT Summary* → `vat-summary_YYYY-MMM.csv`
+- *Rechnungen pro Monat* → `odoo-rechnungen_YYYY-MMM.csv`
+- *Alle Rechnungen pro Monat* → `gesamt-rechnungen-pivot_YYYY-MMM.csv`
+- *Quartal Schweiz* → `schweiz-quartal_YYYY-QN.csv`
 
-The button is disabled on dashboards without data (e.g. the ODOO placeholder).
+The button is disabled while no dataset is loaded for the current dashboard.
 
 ## Filter
 
@@ -58,15 +69,55 @@ A shared filter bar sits above every dashboard (labelled **Filter** with a
 funnel icon and the hint *gilt für alle Dashboards*). It holds the **Zeitraum**
 month + year selector (e.g. `2026-SEP`) and the reload button, and stays visible
 across all views. The previous month is preselected. The selected period is
-sent to the webhook as `?month=YYYY-MMM`, matching the `%(month)s` parameter
-used in `../sql/Summe_je_Abgangsland.sql`.
+sent to the webhook in the POST body as `month` (e.g. `2026-SEP`), matching the
+`%(month)s` parameter used in `../sql/*.sql`.
+
+The invoice dashboards (*ODOO Rechnungen pro Monat*, *Alle Rechnungen pro Monat*
+and *Quartal Schweiz*) have an additional, dashboard-specific filter row. *ODOO
+Rechnungen pro Monat* filters by **Tag**, **Bestellnummer**, **Lieferland** and
+**Rechnungsnummer**; *Alle Rechnungen pro Monat* and *Quartal Schweiz* add a
+**Quelle** field. Filtering re-renders the KPIs, chart and pivot live.
+
+For *Quartal Schweiz* the shared **Zeitraum** control shows a **quarter**
+selector (Q1–Q4) instead of the month selector; the year selector is shared.
+
+## Pivot (Experiment)
+
+The three invoice dashboards (*ODOO Rechnungen pro Monat*, *Alle Rechnungen pro
+Monat* and *Quartal Schweiz*) render their data as an interactive
+[PivotTable.js](https://pivottable.js.org/) pivot instead of a detail table.
+The pivot's rows, columns, values and aggregator are freely configurable in the
+pivotUI control panel; the renderer is fixed to *Table*. Each dashboard has its
+own filter row and **Vorlage** dropdown with presets:
+
+- *ODOO Rechnungen pro Monat*: *Standard* (**Rechnungsland** rows, no column
+group, **Sum(Gesamtpreis brutto)**) and *Zahlart*.
+- *Alle Rechnungen pro Monat* and *Quartal Schweiz*: *Standard* (**Quelle**
+rows, no column group, **Sum(Gesamtpreis brutto)**) and *Rechnungsland
+(Spalten)* (adds **Rechnungsland** as the column group).
+
+*Quartal Schweiz* is filtered to invoices with a **delivery into Switzerland**.
+
+Applying a preset also resets the filters. The chosen layout is kept while you
+type in the filters.
+
+It loads jQuery, jQuery UI and PivotTable.js from public CDNs, so — unlike the
+rest of the app — it needs an **internet connection** to render; offline it shows
+a short message instead. To vendor the libraries locally, download them next to
+`index.html` and change the `<link>`/`<script>` URLs in the `<head>`.
 
 ## Data sources
 
-One request to the webhook returns both datasets, which are read by key:
+Because the datasets are large, the dashboard requests **only the dataset of
+the currently displayed dashboard** — one POST per dashboard, sent only when
+that dashboard is opened or reloaded. Nothing is prefetched. The dataset is
+selected with the `query` field:
 
-- `Summe je Abgangsland` → the *Umsatz je Abgangsland* report
-- `VAT Summary` → the *VAT Summary* report
+- *Umsatz je Abgangsland* → `query: "Summe je Abgangsland"`
+- *VAT Summary* → `query: "VAT Summary"`
+- *Rechnungen pro Monat* → `query: "ODOO Rechnungen pro Monat"`
+- *Alle Rechnungen pro Monat* → `query: "Alle Rechnungen pro Monat"`
+- *Quartal Schweiz* → `query: "Quartal Schweiz"` (sends `quarter` instead of `month`)
 
 ## Files