Split SDK CLI utilities into explicit subpaths

[khaliqgant]

Summary

• keep the default @relayfile/sdk entry Worker-safe by removing static imports/exports of CLI-only mount and login modules
• add explicit @relayfile/sdk/cli, @relayfile/sdk/mount-launcher, and @relayfile/sdk/cloud-login package exports
• split Worker-safe cloud token refresh into its own module and add an import-graph regression test
• update SDK docs/examples that use interactive login or the default mount launcher to import from @relayfile/sdk/cli

Closes #170.

Self-review notes

• Reviewed the default entry graph after the first pass and tightened @relayfile/sdk/cli so it re-exports the main SDK surface plus CLI-specific overrides.
• Left unrelated local changes out of the commit (package-lock.json, .trajectories/index.json, and docs/canonical-identity-spec.md).

Verification

• npm run typecheck --workspace=packages/sdk/typescript
• npm run build --workspace=packages/sdk/typescript
• npm run test --workspace=packages/sdk/typescript
• npm pack --workspace=packages/sdk/typescript --dry-run --json
• Browser-platform esbuild smoke test importing @relayfile/sdk; bundle/metafile contained no node:child_process, node:http, node:fs, node:path, node:process, node:url, mount-launcher, or cloud-login
• Node import smoke test for @relayfile/sdk, @relayfile/sdk/cli, and @relayfile/sdk/mount-launcher

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: f610fe89-5676-4699-b0f7-793fd6648dee

📥 Commits

Reviewing files that changed from the base of the PR and between 76f9b7a and 90704c6.

📒 Files selected for processing (14)

• docs/agent-workspace-golden-path.md
• docs/guides/post-auth-mount-session.md
• packages/sdk/typescript/README.md
• packages/sdk/typescript/package.json
• packages/sdk/typescript/src/cli/index.ts
• packages/sdk/typescript/src/cli/setup.ts
• packages/sdk/typescript/src/cloud-login.ts
• packages/sdk/typescript/src/cloud-token-provider.ts
• packages/sdk/typescript/src/import-safety.test.ts
• packages/sdk/typescript/src/index.ts
• packages/sdk/typescript/src/mount-launcher.ts
• packages/sdk/typescript/src/setup-types.ts
• packages/sdk/typescript/src/setup.test.ts
• packages/sdk/typescript/src/setup.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch codex/issue-170-worker-safe-sdk

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[github-actions]

Relayfile Eval Review

Run: .relayfile/evals/runs/2026-05-20T20-15-41-713Z-HEAD-provider
Mode: provider
Git SHA: 7fe7df4

Passed: 4 | Needs human: 0 | Reviewable: 0 | Missing output: 0 | Failed: 0 | Skipped: 0

Human Review Cases

No reviewable human-review cases captured Relayfile output.

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

View in Devin Review to see 5 additional findings.