bad pixels: black list

Let us have the app monitoring x,y positions of the collected images and ignore (do not upload) the images containing the pixels that repeat too often, e.g. 3 times or more a day. The app should store the black list of bad pixels, updated e.g. daily in midnight (loop over the images collected during the last 24 hours, identify bad pixels, add to the black list). The user should be able to see the pixel black list, with the dates at which each of the pixel was identified. See user depe: pixels 89,447 and 1049,1060 repeat too often. Proposed priority: high

Start by tracing the Android app's image collection and upload flow, then identify where persistent settings or data and user-visible lists are handled. Define how the last 24 hours are evaluated, how repeated x,y pixels are stored with identification dates, and how matching images are excluded. Done means the blacklist updates daily, affects uploads, and is visible to the user.

Written by the indexing model from the issue text.