Initial commit: Kareer, a Kirigami job application tracker

C++/Qt6/KDE Frameworks 6 app with a SQLite-backed data layer, a
Sankey-diagram dashboard, and a full CLI (add/list/show/update/stage/
delete/stats/stages) for scripting from other tools.

src/job.h

@@ -0,0 +1,36 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+#pragma once
+
+#include <QDate>
+#include <QDateTime>
+#include <QString>
+
+/// A single job application and everything tracked about it.
+struct Job {
+    int id = -1;
+    QString company;
+    QString title;
+    QString location;
+    QString remoteType; ///< "Onsite", "Hybrid", "Remote", or empty if unknown.
+    QString source; ///< Where the lead came from (referral, LinkedIn, ...).
+    QString url;
+    QDate dateApplied;
+    int salaryMin = -1; ///< -1 means unset.
+    int salaryMax = -1;
+    int salaryExpectation = -1;
+    QString currency = QStringLiteral("USD");
+    QString notes; ///< Free text: expectations, interview notes, etc.
+    QString contact;
+    QString stage;
+    QDateTime createdAt;
+    QDateTime updatedAt;
+};
+
+/// One recorded move from one stage to another (or from "Start" for the
+/// initial application), used to build the Sankey diagram.
+struct StageTransition {
+    int jobId = -1;
+    QString fromStage; ///< Empty means JobStage::Start.
+    QString toStage;
+    QDateTime changedAt;
+};