[teamleaderleo]

The app server link's launcher (CloudService) now records its route, and cloud.machines reports it as link_route: legacy, link, native, or link (native failed: <error>) when CloudNativeFirstLauncher fell back to cmux link.

Why: the item-14 capture v12 baked CMUX_NEXT_CLOUD_NATIVE_LINK=1 and still showed only "cmux link refused the dial: unreachable", so nobody could tell whether Native fell back or never started. Captures record cloud.machines into result.json, so the next run says which path it took.

This is diagnostics only and doesn't change behaviour.

🤖 Generated with Claude Code

Agent session: agent session

---

^{Open in [code]smith · Need help on this PR? Tag @codesmith-bot with what you need.}

---

Summary by cubic

Reports which route the app server link launched so cloud.machines shows it as link_route: legacy, link, native, or link (native failed: <error>) when the Native-first launcher fell back.

Previously the v12 capture with CMUX_NEXT_CLOUD_NATIVE_LINK=1 only logged "cmux link refused the dial: unreachable", so it was impossible to tell whether Native fell back or never started. Captures record cloud.machines into result.json, so the next run will show the path taken. Diagnostics only; no behavior change.

^{Written for commit bca1fe1. Summary will update on new commits.}

[github-actions]

cmux status _{(one comment, edited in place; each line is updated by the job that owns it)}

Review bca1fe1: HQ feed card · gallery before/after runs · checks

App of this head (app.zip, kept 1 day)

gh workflow run reload-build.yml -R manaflow-ai/cmux --ref feat-cmux-next -f tag=pr32494 -f ref=lane/cloud-link-route-report -f platform=macos -f backend_mode=local

Shipped in:

• cmux NEXT nightly 1.0.0-nightly.4149719270001 (ccb777fdde)
• cmux NEXT nightly 1.0.0-nightly.4149824422001 (f6b340f97a)
• cmux NEXT nightly 1.0.0-nightly.4150011005501 (fbf9260854)
• cmux NEXT nightly 1.0.0-nightly.4150109776501 (ae802cfe75)
• cmux NEXT nightly 1.0.0-nightly.4150231832001 (9b07402606)
• cmux NEXT nightly 1.0.0-nightly.4150393750701 (3772956684)

The feat-cmux-next push run https://github.com/manaflow-ai/cmux/actions/runs/41497919334 at f6b340f failed: cmux-next crash ends the app, cmux-next daemon tests.
Those jobs last passed at ac1dcde. This pull request is one of 5 merged since: #32423, #32457, #32494, #32495, #32490.
If the failure is in your change, fix forward on feat-cmux-next. Pull requests run only the tiers their paths reach (docs/ci/cmux-next-tiers.md); label a batch PR full-ci to run them all before merging.

[teamleaderleo]

Review (subagent claude-opus-5-5 medium): SHIP at bca1fe1
Visual verdict: unchanged by this diff (diagnostics only, no UI).
Checked the route string per launcher branch and the fallback reason. Compile check app passed.
Follow-ups: clear fallbackReason in archive; reduce it to the error type and case.