[groupthinking]

Canonical issue

Hayden flagged https://uvai.io/studio?video=https://www.youtube.com/watch?v=pBsT6v-ciO8. No GitHub issue number was attached to this cut.

Outcome

Studio no longer dead-ends on packs that have a transcript + architecture + artifacts + stack.tools but events[] empty (or missing). The Events rail tells the truth, pack formation is promoted as the workbench, and Export writes those files. ?video= Home/share handoffs still start the player/analysis, including unencoded watch URLs and split video + v params. No fake events are invented from keyframes/concepts.

Scope

• Included:
  • Honest Events empty state after a completed run (studioEventsEmptyMessage)
  • Promoted “From this pack” workbench (architecture + artifacts + Export pack) when events are empty
  • Export of ARCHITECTURE.md + artifacts.json + stack names when events are empty
  • studioQueryFromSearchParams for ?video= / split v=
  • Invalid ?video= now sets an error instead of staying silent
• Explicitly excluded:
  • Origin G.A.T.E., ClipToAction, forge
  • Mapping keyframes/concepts/code_snippets into Events
  • Ship checkout or Maintain/Ship catalog
  • Production E2E claims for arbitrary videos

Risk

• Risk level: low
• Failure mode: Empty-events copy or export zip shape is wrong; ?video= auto-start misses a rare query encoding.
• Rollback: revert this PR; Studio returns to “Events show up after Run.” and transcript-only export gating.

Verification

Head SHA: dea64489e

• Focused tests: cd apps/web && npx vitest run src/lib/__tests__/studio-handoff.test.ts src/lib/__tests__/studio-pipeline-status.test.ts src/lib/__tests__/action-surface.test.ts src/lib/__tests__/uvai-surface-unification.test.ts src/lib/__tests__/home-sell-surface.test.ts → 5 files, 43 passed
• Required CI
• Review threads resolved

Production evidence

Live GET https://uvai.io/api/video/pack?url=https://www.youtube.com/watch?v=pBsT6v-ciO8 returned 200 (0.25s): transcript 1767 chars; architecture present; artifacts 2; stack.tools = SeaDance 2.5, Claude Fable 5, Character.ai, Cluely Desktop; no events field; keyframes 11 / concepts 8 / code_snippets 3 exist on the pack and are not mapped into Events.

This PR is UI/playflow only. Preview on Vercel v0-uvai after CI. Do not treat the live GET as a production Studio E2E.

Agent handoff

• One canonical issue is linked
• No competing PR implements the same issue
• Acceptance criteria are satisfied (empty events workbench + honest copy + export + handoff)
• Required checks pass on the current head
• Human decision is requested only for product, security, irreversible infrastructure, or production approval

QA on pBsT6v-ciO8

1. Open /studio?video=https://www.youtube.com/watch?v=pBsT6v-ciO8 (encoded or raw). Player should load pBsT6v-ciO8 immediately.
2. After Run: transcript panel has ~1767 chars; Events says this pack has no extracted events (not “show up after Run” / not a forever spinner).
3. “From this pack” shows architecture + 2 artifacts above the Events rail; named tools / stack remain visible.
4. Export pack downloads a zip with ARCHITECTURE.md and artifacts.json. Footer Export is enabled.
5. Confirm Events is not filled with keyframes or invented titles.

  

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated
v0-uvai	Building	Preview, v0	Sep 8, 2026 4:44pm UTC

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

Snapshot Warnings

⚠️: No snapshots were found for the head SHA e0db2e4.

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Scanned Files

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[Copilot]

🟡 Changes recommended

Failed runs are treated as completed, and tools-only packs produce an empty promoted workbench with inaccurate messaging.

Once you've addressed the issues Copilot identified, you can request another Copilot review.

Pull request overview

Improves Studio handling for useful Video Packs with empty or missing events.

Changes:

• Adds honest empty-event states and promotes pack outputs.
• Supports raw and split YouTube query handoffs.
• Exports architecture, artifacts, and stack metadata with focused tests.

File summaries

File	Description
apps/web/src/lib/studio-playflow-PLAN.md	Documents scope and verification.
apps/web/src/lib/studio-pipeline-status.ts	Adds empty-state, promotion, export, and validation helpers.
apps/web/src/lib/studio-handoff.ts	Reconstructs Studio query handoffs.
apps/web/src/lib/action-surface.ts	Adds pack formation files to exports.
apps/web/src/components/OneLoopStudio.tsx	Integrates workbench, export, and handoff behavior.
apps/web/src/lib/__tests__/studio-pipeline-status.test.ts	Tests new Studio status behavior.
apps/web/src/lib/__tests__/studio-handoff.test.ts	Tests encoded and split handoffs.
apps/web/src/lib/__tests__/action-surface.test.ts	Tests empty-event pack exports.

Review details

• Files reviewed: 8/8 changed files
• Comments generated: 4
• Review effort level: Balanced

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[linear-code]

GRV-498