chore: upgrade to TypeScript 7.0.2

[juliusmarminge]

The repo uses a June TypeScript 7 native preview for most checks and TypeScript 6 for mobile. Move compiler checks to stable TypeScript 7.0.2 and its tsc command, with the compatible Effect patch at 0.41.0.

Keep TypeScript 6 only where the JavaScript compiler API is required: Astro's checker and the Knip schema preprocessor, which now imports an explicit typescript-legacy alias. Pin React Navigation core to 7.21.13 to fix the circular declaration type rejected by TypeScript 7. Remove the preview editor setting and obsolete backup cleanup; the new Effect patch preserves one backup and skips an already-patched binary.

Verification and nonvisual evidence:

• Before: native preview 7.0.0-dev.20260604.1, Effect patch 0.13.2, mobile compiler 6.0.3.
• After: both vp exec tsc --version and vp exec --filter @t3tools/scripts tsc --version report 7.0.2+effect-tsgo.0.41.0. Repeated install succeeds and reports the compiler is already patched.
• Focused typechecks pass for mobile, web, server, contracts, scripts, and Astro. Astro reports zero errors, warnings, or hints.
• vp test run scripts/knip-schemas.test.ts passes through the real Knip CLI.
• Targeted lint, formatting, and git diff --check pass.

Screenshots are not applicable to this compiler/tooling migration. CI covers the full suite.

Model: GPT-6. Harness: Codex.

Note

Upgrade workspace to TypeScript 7.0.2 and switch typecheck from tsgo to tsc

• Bumps the workspace TypeScript catalog from ~6.0.3 to 7.0.2 and updates @effect/tsgo from 0.13.2 to 0.41.0 in pnpm-workspace.yaml
• Replaces tsgo --noEmit with tsc --noEmit in the typecheck script of every package (apps, packages, scripts, plugin)
• Removes the @typescript/native-preview catalog entry, the VS Code native-preview SDK setting, and the scripts/clean-tsgo-backups.mjs cleanup utility
• Adds a typescript-legacy alias (~6.0.3) in scripts/package.json so scripts/knip-schemas.ts keeps using the legacy compiler API that Knip requires
• Behavioral Change: overrides @react-navigation/core at 7.21.13 in pnpm-workspace.yaml to avoid a TypeScript 7 circular type-alias issue in earlier declarations; apps/marketing/package.json still resolves TypeScript from ~6.0.3 rather than the workspace catalog

^{Macroscope summarized 0e5610c.}

Summary by CodeRabbit

• Chores
  • Updated workspace TypeScript tooling to TypeScript 7.0.2 and refreshed related compiler tooling.
  • Standardized package type-checking commands on the standard TypeScript compiler.
  • Removed the experimental native TypeScript preview configuration and associated cleanup process.
  • Added a compatibility override to prevent a TypeScript 7 type-alias issue.
  • Preserved legacy TypeScript support for schema analysis tools requiring its compiler API.
  • Pinned the marketing app to a compatible TypeScript 6 release.

[macroscopeapp]

Approvability

Verdict: Approved at 0e5610c

Macroscope's review found this PR approvable — This is a tooling migration to stable TypeScript 7 with compatibility updates for typechecking and Knip, without product-source or schema changes. The only runtime-adjacent dependency change is a narrow React Navigation patch-level pin for declaration compatibility.

Notes:

• No code objects were reviewed. Approvability was decided on eligibility alone.

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[github-actions]

Thread transfer impact

✅ Thread transfer remains within every enforced ceiling.

Provider	Metric	Main baseline	This PR	Impact	PR ceiling
Codex	Total thread wire	13.5 KiB	13.6 KiB	+72 B (+0.5%)	15.1 KiB	✅
Codex	Thread snapshot wire	7.0 KiB	7.0 KiB	+5 B (+0.1%)	7.3 KiB	✅
Codex	Live turn WebSocket wire	6.5 KiB	6.6 KiB	+67 B (+1.0%)	7.8 KiB	✅
Codex	Live turn WebSocket decoded	57.0 KiB	57.1 KiB	+88 B (+0.2%)	66.4 KiB	✅
Codex	Live turn messages	8	10	+2 (+25.0%)	21	✅
Claude	Total thread wire	13.6 KiB	13.6 KiB	−32 B (−0.2%)	15.1 KiB	✅
Claude	Thread snapshot wire	7.0 KiB	7.0 KiB	+4 B (+0.1%)	7.3 KiB	✅
Claude	Live turn WebSocket wire	6.6 KiB	6.5 KiB	−36 B (−0.5%)	7.8 KiB	✅
Claude	Live turn WebSocket decoded	57.9 KiB	57.8 KiB	−44 B (−0.1%)	66.4 KiB	✅
Claude	Live turn messages	10	9	−1 (−10.0%)	21	✅

Baseline: 9e37f0c · PR result: 0e5610c · Source CI: success

Scenario and decoded snapshot size

10 historical turns, 5 command tools per turn, 878.9 KiB retained MCP result per historical turn, and a 1.05 MiB retained result in the measured turn.

• Codex decoded thread snapshot: 113.9 KiB
• Claude decoded thread snapshot: 114.6 KiB

Updated in place by a trusted workflow. PR artifacts are strictly validated and never executed.

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📝 Walkthrough

Walkthrough

The pull request updates the workspace to use TypeScript 7, keeps TypeScript 6 for Knip, changes package type checks from tsgo to tsc, and removes native-preview configuration and backup cleanup.

Changes

TypeScript toolchain migration

Layer / File(s)	Summary
Compiler versions and compatibility pnpm-workspace.yaml, package.json, apps/marketing/package.json, scripts/package.json, scripts/knip-schemas.ts	The workspace pins TypeScript 7 and @effect/tsgo. Knip uses the legacy TypeScript package. An override pins @react-navigation/core.
Package type-check commands apps/*/package.json, infra/relay/package.json, oxlint-plugin-t3code/package.json, packages/*/package.json, scripts/package.json	Package typecheck scripts now run tsc --noEmit instead of tsgo --noEmit.
Native-preview cleanup .vscode/settings.json, package.json, scripts/clean-tsgo-backups.mjs	The native-preview SDK setting and prepare-time backup cleanup are removed. The cleanup script is deleted.

Estimated code review effort: 2 (Simple) | ~10 minutes

Merge Risk: ⚪ Minimal · up to 0e561

This updates the TypeScript toolchain and type-check commands while retaining legacy compiler support where required. No current merge-blocking risk is identified.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely describes the primary change: upgrading the repository to TypeScript 7.0.2.
Description check	✅ Passed	The description explains the compiler migration, rationale, compatibility changes, verification steps, and that UI changes are not applicable. It is mostly complete despite not reproducing the templat…
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 1…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch t3code/bump-typescript-to-7

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Actionable comments posted: 1

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Inline comments:
In `@scripts/package.json`:
- Line 22: Update the scripts package dependencies and typecheck configuration
so the typecheck command uses the workspace’s TypeScript 7.0.2 compiler, while
retaining typescript-legacy only for scripts/knip-schemas.ts. Ensure pnpm no
longer resolves the typecheck tsc binary through the TypeScript 6 alias.

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📥 Commits

Reviewing files that changed from the base of the PR and between 9e37f0c and 9a6bd5a.

⛔ Files ignored due to path filters (1)

• pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml

📒 Files selected for processing (19)

• .vscode/settings.json
• apps/desktop/package.json
• apps/marketing/package.json
• apps/server/package.json
• apps/web/package.json
• infra/relay/package.json
• oxlint-plugin-t3code/package.json
• package.json
• packages/client-runtime/package.json
• packages/contracts/package.json
• packages/effect-acp/package.json
• packages/effect-codex-app-server/package.json
• packages/shared/package.json
• packages/ssh/package.json
• packages/tailscale/package.json
• pnpm-workspace.yaml
• scripts/clean-tsgo-backups.mjs
• scripts/knip-schemas.ts
• scripts/package.json

💤 Files with no reviewable changes (2)

• .vscode/settings.json
• scripts/clean-tsgo-backups.mjs

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