feat(streaming): Add live streaming functionality for USDA Vision Camera system

- Introduced non-blocking live preview streaming that operates independently from recording.
- Implemented REST API endpoints for starting and stopping streams, and retrieving live streams.
- Developed a web interface (`camera_preview.html`) for users to control and view camera streams.
- Created TypeScript definitions for API integration in React projects.
- Added comprehensive testing script (`test_streaming.py`) to validate API endpoints and concurrent operations.
- Updated database migration to fix visibility of experiment repetitions for all authenticated users.

supabase/migrations/20250724000001_experiment_repetitions_system.sql

@@ -85,15 +85,11 @@ CREATE TRIGGER trigger_experiment_repetitions_updated_at
 ALTER TABLE public.experiment_repetitions ENABLE ROW LEVEL SECURITY;
 
 -- Create RLS policies for experiment_repetitions
--- Users can view repetitions for experiments they have access to
+-- All authenticated users can view all experiment repetitions
 CREATE POLICY "Users can view experiment repetitions" ON public.experiment_repetitions
-    FOR SELECT USING (
-        experiment_id IN (
-            SELECT id FROM public.experiments
-            WHERE created_by = auth.uid()
-        )
-        OR public.is_admin()
-    );
+    FOR SELECT
+    TO authenticated
+    USING (true);
 
 -- Users can insert repetitions for experiments they created or if they're admin
 CREATE POLICY "Users can create experiment repetitions" ON public.experiment_repetitions

supabase/migrations/20250728000001_fix_repetitions_visibility.sql

@@ -0,0 +1,12 @@
+-- Fix experiment repetitions visibility for all users
+-- This migration updates the RLS policy to allow all authenticated users to view all experiment repetitions
+-- Previously, users could only see repetitions for experiments they created
+
+-- Drop the existing restrictive policy
+DROP POLICY IF EXISTS "Users can view experiment repetitions" ON public.experiment_repetitions;
+
+-- Create new policy that allows all authenticated users to view all repetitions
+CREATE POLICY "Users can view experiment repetitions" ON public.experiment_repetitions
+    FOR SELECT 
+    TO authenticated
+    USING (true);