v0.5.2

Added

• The "Well tag number" input mode now links to the BC Groundwater
  Wells and Aquifers map (apps.nrs.gov.bc.ca/gwells). If you don't
  have a well tag number handy, you can find one by location on that
  map; the link opens in a new tab.

• A Clear button on the setup page resets all inputs for a fresh
  analysis without refreshing the page.

Changed

• The maps are larger on bigger monitors — both the setup and
  results maps now grow with the window while still fitting smaller
  laptop screens.

• A short note under the pumping-duration field explains that the
  90-day default applies to all of BC.

• The page header now uses the official BC Government wordmark,
  which sits flush in the dark-blue band instead of appearing as a
  white panel.

• Storativity (S) now reads as a plain decimal (e.g. 0.00003)
  in the results-page input parameters and the PDF export, instead of
  scientific notation (3e-05). Transmissivity displays the same way.

• When a results table is empty, the message is now a clearly
  highlighted notice instead of a faint line of text — and the
  table's Export CSV button is hidden when there's nothing to
  export. This covers both "no wells were flagged at risk" and "no
  wells were found in the buffer". The buffer-empty message also
  suggests increasing the buffer radius and re-running.

Fixed

• The distance-drawdown chart no longer flips upside down when you
  press Autoscale after zooming in. The inverted axis (drawdown growing
  downward) now stays put, and "Reset axes" returns to it reliably.

• Refreshing the Results page no longer re-runs the analysis or
  discards your edits. Previously, pressing F5 (or restoring the tab)
  silently re-queried the BC Geographic Warehouse, wiped any per-well
  values you had overridden in the details table, and recorded the run
  a second time in the usage statistics. The page now reuses the cached
  result when the inputs haven't changed, so your overrides survive a
  refresh.

• The Run Analysis button is now greyed out until you place a pumping
  point, instead of letting you click it and then showing a "Place a
  pumping point first" message. Once a point is set (by map click,
  lat/lon, or well tag number), the button enables and any earlier
  message clears — so there's no need to scroll back up to check whether
  a point was placed.