Δ10-UX — per-solve routing UX (local vs company-compute)

[jack-champagne]

The UX slice carved out of Δ10 (#34) — the estimator/backend stays on #34 (plumbing, @Rchari1). Routing decision (cloud-solve-service spec, Locked decisions): routing is per-solve, explicit — the agent may suggest offload (estimator's sizeClass vs local RAM), the researcher confirms. No auto-classifier.

What (UI)

• The "run on company compute?" surface: when the estimator (Δ10 — Estimator integration (v0 = tshirt_sizing) + per-solve routing UX #34) flags an estimate over the local-RAM threshold, present it as a confirm, not an auto-route.
• Where the executor: remote choice sits in the solve-assembly flow (the SolveSpec carries it).
• Surface the sizeClass / estimate at the decision point so the choice is informed.

Ties to the freezes

• Freeze 1 (S12): downstream is executor-agnostic — this UI only sets executor: remote on the SolveSpec upstream; it does NOT branch the inspector/runs path.
• Freeze 2 / UX4 (UX4 — Run Inspector enhancements: phase stepper, tags, ipopt output (E4) #49): same design lane, same "build off validated UX to ship" discipline (feedback-first).

Feedback question

Is agent-suggest + user-confirm the right friction, or do power users want a sticky "always cloud" default?

Depends on: #34 (the estimator provides the suggestion signal). Kate owns the UI; #34 owns the estimate.

[kateebonner]

Design context update (7/19): the Connections panel (#159, ADRs in #158) now owns credential entry/validation and the "connected as" status this UX assumes. Dependency order for this issue is: packaging chore (#161 — packaged builds older than the remote-executor merge reject executor: remote) + Connections panel (connection exists) + #34 (the suggestion signal) → this confirm surface. Decision recorded there that affects this issue: entering a valid Company Compute key flips solver mode to HP (the pushed hp-cloud-key contract, pending merge) but routing stays per-solve and explicitly confirmed here — key entry never auto-routes a solve.