[mashkovd]

Summary

• Switches DEMO_VIDEO_URL for the labs mctl-telegram service from the external YouTube link to the app's own route https://tg.mctl.ai/demo/walkthrough.mp4.
• The /demo page will then render the walkthrough as a native <video> served by the service itself (no third-party host).
• Hand-edited directly to avoid the known deploy-tooling footgun that strips colon-bearing env vars; do NOT round-trip this through any deploy CLI.

Merge ordering (important)

Merge / deploy this PR ONLY AFTER the mctl-telegram code PR (mctlhq/mctl-telegram#203) has shipped a release whose image includes the /demo/walkthrough.mp4 route. Until that image is live, this URL points at a 404.

Test plan

• Confirm mctl-telegram feat(observability): extend codex dashboard + add spike alerts #203 is merged and released, and the new image serves /demo/walkthrough.mp4 (200, video/mp4).
• After ArgoCD syncs this change, load https://tg.mctl.ai/demo and confirm the native video plays.

[claude]

Claude finished @mashkovd's task in 26s —— View job

---

Trivial env var change — DEMO_VIDEO_URL switched from YouTube to the self-hosted path on the same domain (tg.mctl.ai) that already owns the ingress and PUBLIC_BASE_URL. YAML is valid, no secrets, no structural changes.

0 P1 / 0 P2 / 0 P3 findings. No P1/P2 findings, good to merge — but only after mctlhq/mctl-telegram#203 is released, as documented in the PR description.

[claude]

Claude finished @mashkovd's task in 29s —— View job

---

Trivial values-only change. The ?v=1 cache-buster on DEMO_VIDEO_URL is a sensible fix for the Cloudflare stale-404 problem; the inline comment documents the rationale and the bump-when-replaced instruction clearly.

0 P1 / 0 P2 / 0 P3 findings. No P1/P2 findings, good to merge — but only after mctlhq/mctl-telegram#203 is released and the image serving /demo/walkthrough.mp4 is live, as documented in the PR description.