refactor: Remove deprecated config fields and add location map component

[mverteuil]

Summary

This PR cleans up deprecated configuration fields and adds an interactive location map component to the settings page.

Changes

Removed Deprecated Fields

• Flickr integration: Removed flickr_api_key and flickr_filter_email (unused feature)
• Hardware monitoring: Removed hardware_check_interval, enable_audio_device_check, enable_system_resource_check, and enable_gps_check (redundant monitoring)
• Privacy threshold: Removed privacy_threshold field (no longer needed)

Renamed for Consistency

• analysis_overlap → audio_overlap (better naming alignment)

New Feature: Location Map

• Interactive Leaflet map on settings page
• Click to set latitude/longitude coordinates
• Reverse geocoding to show location address
• Drag marker to adjust position
• Zoom controls and search functionality

Technical Details

• Updated config migrations in v2_0_0.py to handle field removals
• Added location map component using Leaflet.js
• Enhanced settings route with map integration
• Added format_coordinates() helper utility

Files Changed

• 11 files modified
• 459 insertions, 126 deletions
• New template: components/location_map.html.j2

Testing

• Config migrations tested with field removal handling
• Settings page renders correctly with new map component
• No breaking changes to existing configurations

Breaking Changes

Config fields removed (were already deprecated/unused):

• flickr_api_key, flickr_filter_email
• Hardware monitoring fields
• privacy_threshold

Migration handles these automatically.