Once a file was picked the preview <img> overlaid the file input and
blocked further clicks, so the drop zone became read-only. Making the
preview and the new 'Click to change' hint pointer-events:none lets
clicks pass through to the input again.
Also parses the JPEG APP1 EXIF segment inline (no dependency) to read
DateTimeOriginal and prefill the date field. Falls back to the file's
lastModified for PNGs or JPEGs without EXIF. The date field stays
editable in either case.
Vollkorn read as too chunky next to the Malayalam bio in Manjari.
Crimson Pro is a calmer book-face serif that pairs more evenly.
Renames the CSS variable from --vk to --serif to reflect that the
value is no longer Vollkorn-specific, and bumps .ml to 17px/1.5
so the Malayalam subtitle sits at a comfortable reading size.
puttaalu