feat: support resumable proxy uploads

[thymikee]

Summary

• Adds resumable upload support for proxy installs via /upload/preflight, /upload/direct/:id, and /upload/finalize, including retry/resume after interrupted direct uploads before falling back to legacy /upload.
• Keeps upload concerns reusable by extracting daemon upload HTTP handling, resumable upload state, shared HTTP error mapping, and proxy upload ticket rewriting into focused modules.
• Updates proxy help/docs to describe the exposed resumable /upload/* surface. Scope: 12 touched files.

Validation

Verified with TypeScript, lint, focused upload/proxy tests, CLI help tests, build, and the full unit/smoke equivalent. pnpm check:unit itself was blocked by Corepack registry signature verification, so I ran its underlying local commands: ./node_modules/.bin/vitest run --project unit passed 286 files / 2774 tests, and node --test test/integration/smoke-*.test.ts passed 8 with 1 expected opt-in web smoke skip.

Focused checks passed: upload client/proxy/daemon HTTP resumable tests, src/utils/__tests__/args.test.ts, ./node_modules/.bin/tsc -p tsconfig.json, ./node_modules/.bin/oxlint . --deny-warnings, and pnpm build.

Live proxy install evidence: installed AgentDeviceTester.app through a proxy-started server onto iOS simulator iPhone 17 Pro Max as com.callstack.agentdevicelab, and installed an Android Expo test APK through the same proxy flow onto Pixel 9 Pro XL API 37 as com.callstack.agentdevicelab.

[github-actions]

PR Preview Action v1.8.1
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[github-actions]

Size Report

Metric	Base	Current	Diff
JS raw	1.4 MB	1.4 MB	+8.3 kB
JS gzip	445.6 kB	448.1 kB	+2.5 kB
npm tarball	586.2 kB	588.2 kB	+2.0 kB
npm unpacked	2.0 MB	2.0 MB	+8.3 kB

Startup median (7 runs, lower is better):

Scenario	Base	Current	Diff
CLI --version	22.6 ms	21.8 ms	-0.8 ms
CLI --help	38.7 ms	40.5 ms	+1.7 ms

Top changed chunks:

Chunk	Raw diff	Gzip diff
dist/src/9722.js	+6.1 kB	+1.8 kB
dist/src/cli.js	+1.3 kB	+399 B
dist/src/9919.js	+410 B	+84 B
dist/src/session.js	0 B	-3 B

[thymikee]

Fallow is red on this branch. The blocking findings are in the upload/proxy changes:

• duplicate 11-line block in src/daemon/upload-http.ts:74-84 and src/daemon/upload-http.ts:175-185
• duplicate 7-line block across src/daemon/upload-http.ts:198-204 and src/daemon-proxy.ts:285-291
• high complexity called out in src/daemon/resumable-upload.ts:220 parseContentRange

Please run pnpm check:fallow --base origin/main locally and collapse the repeated upload-response/header handling before re-review.

[thymikee]

Re-reviewed the corrected head after the Fallow fix.

Fallow is now green, all checks are passing, and I do not see a blocker in the resumable upload/proxy route changes. I checked the daemon upload preflight/direct/finalize route, proxy token rewriting, client resume/re-preflight behavior, and the provider/proxy tests. Residual risk is limited to the new upload surface relying on the covered live proxy install evidence. Labeled ready-for-human.