v0.18.0 - Trip Templates

[dannymcc]

What's Changed

New Features

• Trip Templates — save common routes (purpose, vehicle, start/end locations, description, notes) as reusable templates to fill in trip details faster
  • Full CRUD management at /trips/templates/
  • "Load template" dropdown on the Log Trip form pre-fills all fields instantly via AJAX
  • "Use" button on the templates list opens a pre-filled new trip form
  • Templates button added to the trips index page

Other Changes

• New trip_templates database table with migration
• 23 new tests covering template CRUD, access control, JSON data endpoint, and form integration (535 total, all passing)