The month view rendered each event's text (and its little leading dot)
in the calendar's own color, on a very lightly tinted (~13% opacity)
background of that same color. For a light color like white or pale
yellow, the text ended up effectively invisible against its own
near-white background.
internal/web/templates/calendar.templ: add eventTextColor(hex), which
darkens colors above a perceived-luminance threshold (keeping the hue,
e.g. white -> a mid gray, pale yellow -> olive) while leaving already-
legible colors untouched; used for both the event text and its leading
dot. Also add a subtle ring to the event dot and to the calendar legend's
color swatch so a white/near-white swatch stays visible against the
page's white background, independent of the text-color fix.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
arnefandCopilot
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