feat(e2e): add Stremio end-to-end CI harness

[leo-mathurin]

Summary

• add Playwright coverage for the addon API, frontend configuration, onboarding, and hosted Stremio Web flows
• add a disposable local Supabase schema and guarded database cleanup for local and CI runs
• split PR checks into deterministic local tests and four live smoke tests while retaining the full live regression suite on demand
• reuse shared API contracts and the typed backend client

Verification

• 16 local E2E tests passed
• 4 live smoke tests passed
• 24 full live tests passed
• 99 backend tests passed
• repository lint, build, typecheck, formatting, workflow parsing, and diff checks passed
• remote database targets are rejected unless explicitly confirmed

[vercel]

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Project	Deployment	Actions	Updated (UTC)
stremlist-backend	Ready	Preview	Aug 26, 2026 2:58pm
stremlist-frontend	Ready	Preview	Aug 26, 2026 2:58pm

[greptile-apps]

Greptile Summary

The PR adds a Playwright end-to-end harness covering local addon/frontend behavior and hosted Stremio flows, backed by a disposable Supabase schema and split local/live CI jobs.

• Adds typed API, database, test-data, and Stremio helpers.
• Adds deterministic local, live smoke, and opt-in live regression projects.
• Restricts cleanup to documented fixture identities and guards remote database targets.
• Pins the newly introduced Supabase setup action to a commit SHA.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
.github/workflows/ci.yml	Adds isolated local and live-smoke E2E matrix jobs and pins the new Supabase CLI setup action to a full commit SHA.
apps/e2e/env.ts	Defines harness endpoints and rejects destructive cleanup against unconfirmed non-loopback database targets.
apps/e2e/helpers/db.ts	Implements fixture-scoped database cleanup and inspection helpers without retaining the previously reported global deletion.
apps/e2e/helpers/test-data.ts	Centralizes test identities and includes public, unknown, and private users in the cleanup allowlist.
apps/e2e/playwright.config.ts	Configures serialized Playwright projects and isolated backend/frontend web servers for local and hosted-flow coverage.
supabase/migrations/20260219000000_baseline_schema.sql	Provides the disposable local database schema required by the E2E harness.

_{Reviews (5): Last reviewed commit: "fix(e2e): include all persisted test use..." | Re-trigger Greptile}

[leo-mathurin]

@greptile review

[leo-mathurin]

@greptile review

[leo-mathurin]

@greptile review

[leo-mathurin]

@greptile review