feat: map shapes, image persistence, grab tool, layer rename/delete, i18n, page metadata

supabase/migrations/048_map_shapes.sql

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+-- ============================================================
+-- Map Shapes: polygons and rectangles for map layers
+-- ============================================================
+
+CREATE TABLE map_shapes (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  layer_id UUID NOT NULL REFERENCES map_layers(id) ON DELETE CASCADE,
+  shape_type TEXT NOT NULL DEFAULT 'polygon' CHECK (shape_type IN ('polygon', 'rectangle')),
+  label TEXT NOT NULL DEFAULT '',
+  color TEXT NOT NULL DEFAULT '#6366f1',
+  fill_opacity DOUBLE PRECISION NOT NULL DEFAULT 0.15,
+  stroke_width DOUBLE PRECISION NOT NULL DEFAULT 2,
+  vertices JSONB NOT NULL DEFAULT '[]',
+  rotation DOUBLE PRECISION NOT NULL DEFAULT 0,
+  sort_order INT NOT NULL DEFAULT 0,
+  created_by UUID REFERENCES auth.users(id) ON DELETE SET NULL,
+  created_at TIMESTAMPTZ DEFAULT now(),
+  updated_at TIMESTAMPTZ DEFAULT now()
+);
+
+CREATE INDEX idx_map_shapes_layer ON map_shapes(layer_id);
+
+-- RLS
+ALTER TABLE map_shapes ENABLE ROW LEVEL SECURITY;
+
+-- Select: org members can view
+CREATE POLICY "Org members can view map shapes" ON map_shapes FOR SELECT
+  USING (EXISTS (
+    SELECT 1 FROM map_layers ml
+    JOIN event_departments ed ON ml.department_id = ed.id
+    JOIN events e ON ed.event_id = e.id
+    JOIN org_members om ON e.org_id = om.org_id
+    WHERE ml.id = map_shapes.layer_id AND om.user_id = auth.uid()
+  ));
+
+-- Insert
+CREATE POLICY "Dept members and editors can insert map shapes" ON map_shapes FOR INSERT
+  WITH CHECK (EXISTS (
+    SELECT 1 FROM map_layers ml
+    JOIN event_departments ed ON ml.department_id = ed.id
+    JOIN events e ON ed.event_id = e.id
+    JOIN org_members om ON e.org_id = om.org_id
+    WHERE ml.id = map_shapes.layer_id
+      AND om.user_id = auth.uid()
+      AND (
+        om.role IN ('owner', 'admin', 'editor')
+        OR EXISTS (
+          SELECT 1 FROM event_member_departments emd
+          JOIN event_members em ON emd.event_member_id = em.id
+          WHERE emd.department_id = ed.id AND em.user_id = auth.uid()
+        )
+      )
+  ));
+
+-- Update
+CREATE POLICY "Dept members and editors can update map shapes" ON map_shapes FOR UPDATE
+  USING (EXISTS (
+    SELECT 1 FROM map_layers ml
+    JOIN event_departments ed ON ml.department_id = ed.id
+    JOIN events e ON ed.event_id = e.id
+    JOIN org_members om ON e.org_id = om.org_id
+    WHERE ml.id = map_shapes.layer_id
+      AND om.user_id = auth.uid()
+      AND (
+        om.role IN ('owner', 'admin', 'editor')
+        OR EXISTS (
+          SELECT 1 FROM event_member_departments emd
+          JOIN event_members em ON emd.event_member_id = em.id
+          WHERE emd.department_id = ed.id AND em.user_id = auth.uid()
+        )
+      )
+  ))
+  WITH CHECK (EXISTS (
+    SELECT 1 FROM map_layers ml
+    JOIN event_departments ed ON ml.department_id = ed.id
+    JOIN events e ON ed.event_id = e.id
+    JOIN org_members om ON e.org_id = om.org_id
+    WHERE ml.id = map_shapes.layer_id
+      AND om.user_id = auth.uid()
+      AND (
+        om.role IN ('owner', 'admin', 'editor')
+        OR EXISTS (
+          SELECT 1 FROM event_member_departments emd
+          JOIN event_members em ON emd.event_member_id = em.id
+          WHERE emd.department_id = ed.id AND em.user_id = auth.uid()
+        )
+      )
+  ));
+
+-- Delete
+CREATE POLICY "Dept members and editors can delete map shapes" ON map_shapes FOR DELETE
+  USING (EXISTS (
+    SELECT 1 FROM map_layers ml
+    JOIN event_departments ed ON ml.department_id = ed.id
+    JOIN events e ON ed.event_id = e.id
+    JOIN org_members om ON e.org_id = om.org_id
+    WHERE ml.id = map_shapes.layer_id
+      AND om.user_id = auth.uid()
+      AND (
+        om.role IN ('owner', 'admin', 'editor')
+        OR EXISTS (
+          SELECT 1 FROM event_member_departments emd
+          JOIN event_members em ON emd.event_member_id = em.id
+          WHERE emd.department_id = ed.id AND em.user_id = auth.uid()
+        )
+      )
+  ));
+
+ALTER PUBLICATION supabase_realtime ADD TABLE map_shapes;