fix: confirm mismatched multi-card updates

[kuator]

Summary

• compare the configured sentence field across recent notes selected by the multi-card count
• show a centered yes/no warning when only the newest subset is related
• allow explicitly updating every requested note with y, or cancel with n or a ten-second timeout
• normalize sentence HTML and spacing before comparison

Why

If the card count is accidentally set too high, update_last_note currently updates older unrelated notes as long as they are within the ten-minute window. This adds a safeguard without preventing intentional overwrites when the heuristic produces a false positive.

Testing

• luajit tests/run.lua
• git diff --check

[kuator]

A few times I updated unrelated note because I forgot, so I added handling a single-mismatched card as well

[tatsumoto-ren]

This function is longer than 21 lines. Maybe it could be split into smaller logical chunks. The same applies to test_update_notes_confirms_unrelated_single_note.

[tatsumoto-ren]

Have you tried mpv's mp.input.select? It should simplify the logic significantly.

https://github.com/mpv-player/mpv/blob/f4d13e1c2c91f3a56e589aef9cb44cbc02e26e47/DOCS/man/select.rst

local input = require('mp.input')

local function confirm_yes_no(prompt, on_result)
    local resolved = false

    local function finish(result)
        if resolved then return end  -- guard against double-resolve (submit+closed)
        resolved = true
        on_result(result)
    end

    input.select {
        prompt = prompt,
        items = { "Yes", "No" },
        default_item = 1,           -- [1] "Yes" highlighted by default
        -- submit(idx): 1-based index into `items`.
        submit = function(idx)
            finish(idx == 1)
        end,
        -- closed: fired on dismiss (e.g. ESC or when the prompt is superseded).
        -- Treated as neither Yes nor No.
        closed = function()
            finish(nil)
        end,
    }
end

Usage:

confirm_yes_no("Update this note anyway?", function(confirmed)
    if confirmed == true then
        proceed_with_update()
    else
        clear_update_state()
        h.notify("Card update cancelled.", "info", 2)
    end
end)

[kuator]

Sorry, I've been busy late, will try to addres your comments when I have more time