Create task screen — location field (premium)

[MessiasLima]

Description

Add a location field to the Create Task screen that allows premium users to attach a location to a task. The location field stores latitude and longitude coordinates.

The field is shown as an "Add location" label/button. Tapping it opens a location picker where the user can search for a place or drop a pin on a map. Once selected, the location name, coordinates, and a small static image of the place are displayed. Tapping the image opens the location picker again to change the location. An X button next to the image removes the location.

If the user is not premium, the location field shows a lock icon and a premium-upsell label. Tapping it opens the RevenueCat paywall.

Depends on #121 (Create task screen — core fields), #130 (Premium gating infrastructure).

Scope

In scope: location field on Create Task screen, location picker (search + map pin), premium gating with upsell CTA, saving latitude/longitude on the task entity, small place image display, removing a location, and string resources.

Out of scope: location map on Task Detail screen (#131), sort by proximity (#29), embedded map editing.

Acceptance criteria

• GIVEN the user is on the Create Task screen and has a premium subscription
  WHEN the screen renders
  THEN an "Add location" label/button is visible
• GIVEN the user taps "Add location" and is premium
  WHEN the location picker opens
  THEN the user can search for a place or drop a pin on a map
• GIVEN the user has selected a location in the picker
  WHEN they confirm the selection
  THEN the location name, coordinates, and a small static image of the place are saved on the task and the field shows the place image and location name
• GIVEN a location has been set on the task
  WHEN the user taps the place image
  THEN the location picker opens to change the location
• GIVEN a location has been set on the task
  WHEN the user taps the X button next to the place image
  THEN the location is cleared from the task and the field reverts to "Add location"
• GIVEN the user is on the Create Task screen and does not have a premium subscription
  WHEN the screen renders
  THEN the location field shows a lock icon and a premium-upsell label
• GIVEN the user taps the premium-upsell location field
  WHEN the action occurs
  THEN the RevenueCat paywall is presented
• GIVEN user-visible text appears on the location field or picker
  WHEN the app renders it
  THEN all visible text comes from string resources