Prevent .env overwrite; add ReviewsTrendChart and dynamic CriticalUpdates on dashboard

[streamsmarter]

Motivation

• Prevent accidental overwrites of an existing .env.local when scaffolding environment files and make the dashboard surface live activity and review trends.

Description

• Update README.md environment examples to use placeholders and note that create-env scripts no longer overwrite .env.local by default and that the dashboard is at /app after sign-in.
• Change create-env.mjs and create-env-fixed.mjs to check for an existing .env.local, detect existing Supabase values, and only overwrite when --force is passed, otherwise print informative messages.
• Add src/components/reviews-trend-chart.tsx, a client component that queries review rows via Supabase + @tanstack/react-query, groups reviews by date, and renders a configurable LineChart with a time-range selector and loading skeletons.
• Update src/components/critical-updates.tsx to fetch recent update rows from Supabase using useQuery, map update_color to update types, format relative times, handle loading/empty states, and present live activity; and modify src/app/app/page.tsx to show the new ReviewsTrendChart and wrap CriticalUpdates in the dashboard layout.

Testing

• Ran npm run lint and it completed successfully with no lint errors.
• Ran npm run build and the production build completed successfully.

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Codex Task

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Project	Deployment	Actions	Updated (UTC)
rep-guardian-obhh	Ready	Preview, Comment	Mar 2, 2026 3:56am