Below is a messy sales CSV export. Build a single self-contained HTML dashboard file (no external libraries, everything inline) that cleans this data and reports on it.

Cleaning rules:

- order_id must be unique: if an id appears twice, keep the first row and drop the rest.
- Rows whose amount is not a number (like N/A or unknown) are excluded from revenue, but report how many you excluded.
- Negative amounts are refunds and must count as negative revenue.
- Region names must be normalized (TX, tx, Texas, texas are all Texas; CA is California; OH is Ohio).
- Dates appear in multiple formats; parse them all. Q1 = Jan-Mar, Q2 = Apr-Jun.

The dashboard must show:

1. A pivot table of total revenue by region (rows) and quarter (columns), with row totals, column totals, and a grand total, formatted as dollars with two decimals.
2. A bar chart of revenue by region drawn with inline SVG or canvas (no chart libraries).
3. A data quality panel: rows received, duplicates dropped, rows excluded, rows counted.
4. A one-line headline stating the top region and its total.

The numbers displayed must be computed correctly from the data. Output only the complete HTML file.

```
order_id,order_date,region,product,amount_usd
1001,2025-01-06,Texas,widget,"1,240.00"
1002,1/9/2025,CA,gadget,$980
1003,2025-01-14,TX,gizmo,312.50
1004,"Jan 21, 2025",california,widget,"1,764.00"
1005,2025-01-27,Ohio,gadget,455
1006,2/3/2025,texas ,widget,N/A
1007,2025-02-10,OH,gizmo,"1,102.25"
1008,"Feb 14, 2025",California,widget,"2,310.00"
1009,2025-02-18,TX,gadget,-450.00
1010,2025-02-24,Texas,gizmo,870.10
1011,3/3/2025,Ohio,widget,"$1,999.99"
1012,2025-03-08,CA,gizmo,640.00
1008,"Feb 14, 2025",California,widget,"2,310.00"
1013,"Mar 12, 2025",tx,gadget,"1,580.00"
1014,2025-03-19,ohio,gizmo,225.75
1015,2025-03-27,California,gadget,"3,050.00"
1016,4/2/2025,TX,widget,990.00
1017,2025-04-07,Ohio,gadget,unknown
1018,"Apr 11, 2025",CA,widget,"1,420.50"
1019,2025-04-16,Texas,gizmo,"2,075.00"
1020,2025-04-22,OH,widget,$760.25
1021,5/1/2025,California,gizmo,"1,111.11"
1022,2025-05-06,TX,gadget,845.00
1023,"May 13, 2025",Ohio,gizmo,-220.00
1024,2025-05-19,texas,widget,"1,300.00"
1025,2025-05-28,CA,gadget,"2,940.40"
1026,6/4/2025,Ohio,widget,515.00
1027,2025-06-10,California,widget,"1,875.25"
1028,"Jun 17, 2025",TX,gizmo,N/A
1029,2025-06-23,OH,gadget,"1,660.00"
1030,2025-06-30,Texas,gadget,730.90
```