Comisión-remainder section is read-only but canGradePractica permits grading it — affordance and permission disagree

PLUTO-77/86 render the comisión remainder (?verComision=1, ComisionDayToggle) as a read-only section for MIXED teachers. VERIFIED IN-TREE 2026-08-07: canGradePractica PERMITS grading those prácticas — PLUTO-141 widened grading to any JTP/adjunto/ayudante assigned to the comisión, so the permission and the affordance disagree. NOT MEASURED, and this is the gap this WI exists to close: I did not exercise the click path. I do not know whether the section renders a disabled/absent grade control, an enabled one, or a control that 404s. The permission read is a source read; the UI behaviour is an assertion I have not made. Establish first, in this order: 1. Does the remainder section render a grading affordance at all? 2. If absent/disabled — is that deliberate (data-minimisation intent of the opt-in section) or an oversight? PLUTO-77's design note frames the section as read-only, which may predate PLUTO-141's widening. 3. Only then decide: enable the affordance, or document the read-only intent in the component so the next reader does not re-open this. Do NOT resolve by narrowing canGradePractica. Per the aro:coders brainstorm close (bs-msitbbhaie2) and evolutiva-ownership-vs-visibility-vs-actionability: ACTIONABILITY is legitimately WIDER than OWNERSHIP, and editing a permission predicate to make a UI consistent is the wrong layer. PLUTO-141 was Elazar-directed via domain expert Puia and fixed a real co-JTP block across 54 prácticas plus an ayudante exclusion — it is not to be undone. Surfaced during the 2026-08-07 aro:coders brainstorm; I told the room I would file rather than assert.