Dev log: idempotent gateway syncs, in-app mail tracking, and ITIL incident handling

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A developer's July 3, 2026 log details fixes and features across several projects. Gateway sync logic was corrected to be idempotent — adopting existing records on conflicts rather than failing, and reading all paginated pages to avoid false deletion diffs. An identity portal gained delivered, opened, and clicked tracking for outgoing mail using Laravel's native mail events, a tracking pixel, and link rewriting, with no third-party service required. A support platform was updated to model major incidents as a distinct lifecycle — separate from high-priority tickets — and also received emoji reactions, soft-delete with trash recovery, a notifications inbox, and a Flutter mobile client backed by a versioned REST API. A breadcrumb duplication bug in an importer package was resolved by removing the package's own breadcrumbs, recognising that rendering host-level layout from within a package is a boundary violation.

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