township: "Regenerate whole match" button (end-to-end match redo)

Adds a `full` scope to the per-match action handler that rebuilds one
match in order: re-plan all fight-clip + outcome prompts (text model) →
regenerate every keyframe (image model) → re-render all clips + outcomes
and reassemble finals (video model), with live per-phase progress. Other
matches are untouched. Wires the confirm dialog, the match-detail button,
and the /matches/render scope allowlist.

Fix: the `full` confirm label used an apostrophe (match's) inside the
single-quoted JS string of the plain triple-quoted _match_js block, which
collapsed to a real quote and broke the whole script (reMatch undefined).
Reworded to avoid it; verified the rendered JS parses with node --check.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>