v0.1.3: redesign the Sankey pipeline layout

- Spread columns by rank among the stages actually present, so sparse
  pipelines fill the width instead of leaving dead stretches
- Top-align columns: the funnel's success path runs level along the top
  and drop-off ribbons only ever descend
- Give each ribbon its slot per node side (outgoing by target height,
  incoming by source height) so ribbons stop braiding over each other
- Move the last column's labels to its left so they always stay
  on-screen, with a theme halo to stay legible over ribbons
- Never hide small-node labels; elide with tooltip instead
- Guarantee columns and ribbons fit the viewport (clamp-aware scale,
  spill-proof ribbon thickness)
- Debounce resize relayouts and stop re-querying SQLite on resize
- Canonicalize stage names on write (CLI "rejected" -> "Rejected") and
  repair pre-existing rows on database open
- Take Sankey node width/padding from Kirigami units
- Add QuickShapesPrivate configure-time guard for QtQuick.Shapes
- Extend sankeylayouttest: viewport fit, ribbon containment, slot
  ordering, sparse-column spread, canonicalization, degenerate sizes
- README: build-dependency and generator fixes, document SettingsPage

Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_019FXfh48mASRsE1WEhy9jcM

CMakeLists.txt

@@ -5,7 +5,7 @@
 
 cmake_minimum_required(VERSION 3.16)
 
-project(kareer VERSION 0.1.2 LANGUAGES CXX)
+project(kareer VERSION 0.1.3 LANGUAGES CXX)
 
 set(REQUIRED_QT_VERSION 6.6.0)
 set(REQUIRED_KF_VERSION 6.5.0)
@@ -33,6 +33,9 @@ find_package(Qt6 ${REQUIRED_QT_VERSION} REQUIRED COMPONENTS
     Widgets
     Qml
     Quick
+    # QtQuick.Shapes runtime QML module (SankeyDiagram.qml); configure-time
+    # guard only, nothing links against it.
+    QuickShapesPrivate
     QuickControls2
     Sql
     Test