get_tax_report

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A tax year assembled from the signed-in user's own ledger: the dividends received (gross, withheld at source, net — per payment and per source country) and the disposals made (matched first-in first-out, with Spain's two-month rule applied to losses). Foreign currency is converted to euros at the ECB's official daily reference rate for each date — a dividend at its pay date, and a sale's cost and proceeds at their own separate dates, so the currency movement between buying and selling is part of the result. Pass `year` (defaults to the last completed one). Private to the caller. **Beta, and unevenly scoped.** The dividends section works for any tax residence. The disposals section is modelled for **Spain only** so far and returns `supported: false` for anyone else — say so rather than implying the user has no sales. **This is the input to a declaration, not a declaration.** No tax is computed. Every figure carries flags where the data is incomplete — a missing exchange rate, a broker that never reports withholding, a position that sold more shares than its recorded purchases account for. Those flags are the point: relay them, and relay the disclaimer, whenever you relay a number from here.