Replace direct lang('prev')/lang('next') calls with localized labels using general_word_previous and general_word_next language lines (falling back to 'Previous'/'Next'). Adds $prev_label and $next_label and updates the pagination links/spans to use them, improving localization support for the previous-contacts pagination.
Add a cached DXCC lookup and a jsondxcc endpoint to speed up country resolution and reduce DB load (file-cache with 1h TTL). Introduce cached_dxcc_lookup(), build_confirmation_where(), and callsign_status() in the Logbook controller; refactor confirmed_grid_before() and worked_grid_before() to accept logbook relationships and confirmation prefs to avoid redundant queries. Use a new Logbook_model::get_recent_callsign_details() to populate recent name/gridsquare/qth/iota/qsl/state/county values in a single query. Update JS to better manage lookup state, invalidate in-flight requests, and perform a debounced quick DXCC lookup to improve UX. Tweak previous-contacts pagination to a compact sliding window and remove a redundant UI note.
Rename the container id from "qso-last-table" to "qso-last-table-content" and update all pagination links' hx-target attributes accordingly. This ensures htmx swaps and the 5s auto-refresh target the correct element for the previous contacts component.
Prevent caching for the HTMX endpoint and move polling into the component. Qso controller now sets Cache-Control/Pragma/Expires headers for the component_past_contacts endpoint to ensure fresh data. The previous_contacts view was updated to self-poll (hx-get with page param, hx-trigger every 5s, hx-target="this", and hx-vals timestamp) to include a cache-busting timestamp. The main qso index removed the redundant recurring poll (now only triggers on load) to avoid duplicate requests.
Implement server-side pagination for previous contacts and add a DXCC Summary tab. Controller Qso now uses last_custom_paginated and exposes total_rows/total_pages/current_page/limit. Logbook_model gained last_custom_paginated and last_custom_count to support paged queries. The previous_contacts view was updated with HTMX pagination controls and wrapping for a scrollable table; qso/index was refactored to a tabbed UI (Previous Contacts / DXCC Summary). Lookup result display was improved: responsive table, sticky header, consolidation of LSB/USB into SSB and filtering out empty modes. JS and CSS updates load DXCC HTML into the new tab, hide legacy dxccsummary elements, and add form reset / Escape handling to return focus to the previous contacts tab.
