fix(studio): delay ObjectURL revocation + silence TS7 deprecation warnings

[Jefsky]

Summary

Two unrelated fixes bundled in one PR (both low-risk, same package):

1. ObjectURL revocation timing (#622)

packages/studio/src/hooks/useFrameCapture.ts — setTimeout(..., 0) fires before the browser initiates the download, causing empty/failed frame captures. Increased delay to 1000ms to give the browser time to read the blob before revocation.

2. TypeScript 7.0 deprecation warnings (#472)

packages/cli/tsconfig.json — Added ignoreDeprecations: "5.0" and rootDir: ".." to silence baseUrl deprecation and "common source directory" warnings.

packages/studio/tsconfig.json — Added ignoreDeprecations: "5.0" to silence baseUrl deprecation warning.

Closes #622
Closes #472

[vanceingalls]

First review at d93fa954.

Blocker — LayersPanel.tsx added as a NEW FILE bundled with three unrelated fixes

The PR body says "Two unrelated fixes bundled in one PR" (ObjectURL revoke timing + TS deprecation warnings), but the diff actually contains THREE fixes plus a fourth surprise:

packages/cli/tsconfig.json                                    +14 / -5   (tsconfig fix)
packages/studio/src/captions/generator.ts                     +2  / -2   (caption escape fix — NOT in PR body)
packages/studio/src/components/editor/LayersPanel.tsx         +295/ 0    (status: ADDED — NOT in PR body)
packages/studio/src/hooks/useFrameCapture.ts                  +1  / -1   (ObjectURL revoke fix)
packages/studio/tsconfig.json                                 +22 / -7   (tsconfig fix)

The LayersPanel.tsx addition (status: added) is the same defect as #793/#794 — the file already exists on main, so on rebase the merge either conflicts or silently clobbers the existing panel, losing every change committed to it since the branch point.

The generator.ts change is also unannounced in the body — it's the same caption-escaping fix as #625 (already approved) and #794 (also problematic for the same LayersPanel reason).

Blocker — every individual fix in this PR has a competing single-purpose PR

Concern in this PR	Competing PR	Status
ObjectURL revoke 0ms→1000ms (useFrameCapture.ts:1)	#622 (hobostay)	Already APPROVED by @jrusso1020
Caption JSON.stringify (generator.ts:1)	#625 (hobostay)	Already APPROVED by @jrusso1020
TS 7.0 deprecation warnings (both tsconfig.json)	#472 (roiizchak)	Already APPROVED by @jrusso1020
LayersPanel.tsx (the 295-line new-file dupe)	#792 (func25)	Open, single-purpose, CI green, correct shape

Every line of this PR is shipped (and reviewed) better elsewhere.

Strengths

For completeness — the individual one-line fixes are correct in isolation:

• ObjectURL revoke timing is the right call (setTimeout(..., 0) fires before link.click() initiates the download); 1000ms is conservative-safe.
• Caption JSON.stringify correctly handles newlines + line separators + all special chars that break manual escape regex.
• ignoreDeprecations: "5.0" is the canonical TS5-accepted value (TS rejects "6.0" until 5.10+).

None of these strengths change the "close this PR, merge the singles" conclusion.

Recommendation

Close this PR. Merge the four single-purpose PRs (#622, #625, #472, #792). Each has a focused diff, clear ownership, and (for the three hobostay ones + #472) already-approved status. Bundling four unrelated fixes — three of which duplicate already-approved PRs and one of which adds a broken duplicate file — is a strict regression in reviewability.

Verdict

Verdict: REQUEST CHANGES
Reasoning: Diff bundles four unrelated fixes (only two announced in the body), all of which have single-purpose competing PRs already approved or correctly shaped; plus a LayersPanel.tsx new-file addition that will clobber the existing panel on merge. Recommend closing in favor of #622, #625, #472, #792.

— Vai