chore: full stack stability and migration fixes, plus react UI progress

migrations/20260315000003_add_function_secrets.sql

@@ -0,0 +1,12 @@
+-- Add secrets table for edge functions
+CREATE TABLE IF NOT EXISTS functions.secrets (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    name TEXT NOT NULL,
+    value TEXT NOT NULL,
+    project_ref TEXT NOT NULL,
+    created_at TIMESTAMPTZ DEFAULT now(),
+    UNIQUE(project_ref, name)
+);
+
+-- Index for faster lookup by project
+CREATE INDEX idx_functions_secrets_project ON functions.secrets(project_ref);