refactor: split oversized session and apple app files

[thymikee]

Summary

Split the 5.7k-line session handler test into focused scenario files backed by a shared mock harness, so each touched session file stays under 800 lines.

Split Apple app operations out of core/apps.ts into focused launch, install, resolution/inventory, settings, device I/O, and simctl helper modules while keeping core/apps.ts as the stable facade.

Closes #1044

Touched-file count: 20.

Validation

Ran the newly split session-handler suites: 11 files, 124 tests passed.

Ran Apple app-focused unit coverage for open/close/install/reinstall/resolve/deep-link/settings cases: 47 tests passed.

Ran provider lifecycle scenarios for iOS and macOS open/apps/appstate behavior: 2 files, 5 tests passed.

Ran pnpm format and pnpm check:quick.

Residual risk: the full src/platforms/apple/core/tests/index.test.ts suite still contains unrelated screenshot/status-bar cases that timed out or attempted xcrun outside the app split. The app-focused subset above passed.

[github-actions]

Size Report

Metric	Base	Current	Diff
JS raw	1.5 MB	1.5 MB	-195 B
JS gzip	484.1 kB	484.1 kB	-6 B
npm tarball	586.0 kB	586.2 kB	+225 B
npm unpacked	2.1 MB	2.1 MB	-195 B

Startup median (7 runs, lower is better):

Scenario	Base	Current	Diff
CLI --version	29.5 ms	29.5 ms	-0.1 ms
CLI --help	51.4 ms	51.3 ms	-0.1 ms

Top changed chunks:

Chunk	Raw diff	Gzip diff
dist/src/9722.js	-202 B	-11 B
dist/src/apps.js	+7 B	+1 B

[thymikee]

Review: LGTM. The monolith actually dissolved: session.test.ts is gone (12+ scenario files, all under 800 lines, sharing one mock harness module) and apps.ts is now a 24-line barrel over launch/install/resolution/settings/device-io concerns — public import sites unchanged. 961 tests across handler + apple core suites and typecheck green locally. Note for the record: session-replay-vars.test.ts (2339 lines) still exceeds the bar but was NOT touched by this PR — pre-existing debt outside #1044's scope, fine to leave for its own pass. History tracing via --follow is inherently limited for one-into-many splits; the scenario file names are self-indexing, which matters more for agents anyway.

[thymikee]

Coordinator re-review: no actionable blockers on current head 399bcc6. CI is green (21/21). The post-review CI fix only adjusts exported/internal split details, Android test timeout budget, and the fallow baseline after the session/apps split; it does not change the command surface or runtime routing intent. Merge-readiness is for maintainer judgment.

[thymikee]

Coordinator re-check after rebase: current head 5dc3e98 is clean and CI is green (21/21). The PR remains ready-for-human; no new actionable blockers found after the base picked up #1057/#1058.

[github-actions]

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2026-07-04 00:02 UTC