Preliminary clockify support

hamstertools/screens/clockify/mappings.py

@@ -0,0 +1,32 @@
+from textual.app import ComposeResult
+from textual.containers import VerticalScroll
+from textual.screen import Screen
+from textual.widgets import DataTable, Header, Footer
+
+from hamstertools.db import HamsterActivity, ClockifyProject, HamsterClockifyMapping
+
+
+class ClockifyMappingScreen(Screen):
+    """Screen for managing Clockify activity-project mappings"""
+    
+    BINDINGS = [("q", "quit", "Quit")]
+    
+    def compose(self) -> ComposeResult:
+        yield Header()
+        yield VerticalScroll(DataTable())
+        yield Footer()
+        
+    def on_mount(self) -> None:
+        table = self.query_one(DataTable)
+        table.add_columns("Hamster Activity", "Clockify Project")
+        
+        # Query all mappings
+        mappings = (HamsterClockifyMapping
+                   .select()
+                   .join(HamsterActivity)
+                   .join(ClockifyProject))
+        
+        for mapping in mappings:
+            activity = f"{mapping.hamster_activity.category.name} » {mapping.hamster_activity.name}"
+            project = mapping.clockify_project.name
+            table.add_row(activity, project)