Task: Reconcile provisional shell outputs with the codegenerated tables

Every compute verb the shell exposes renders through its codegen table renderer. Platform and the telemetry samples lack renderers today; the drift story generates them, then this task swaps the provisional raw rows for the tables.

• compute list-platforms streams the generated platform table renderer (out streams the platforms vector), replacing the provisional raw rows.
• compute grid-stats renders the per-node telemetry table from the generated node-sample renderers.
• The shell formats no compute row itself: every render goes through the generated table_io.

(Implementation strategy. Written when work starts; key decisions are distilled into the parent story's * Decisions at close, but the plan itself stays — it is the historical record of what we did.)

Manual QA scenarios (scaffolded via compass add test_scenario, run through the QA Validation Runner panel) that verify this task. Link new ones here as they're created; the scenario doc itself links back via its "Verifies task" field.

Abandoned at sprint 25 close. Sprint 26 replaces the codegen approaches tried so far with one method: for each module, sync codegen and clear its drift. Sprint 26 opens new, clean stories for each module. This story is not carried forward.