Q-W4: split actions.cpp into design_view_actions/bank_actions/prune_action + shared action_registry; bank verbs deduped into promptless bankOp* inner verbs in panel_bank_ops (one mutation home, two UX skins); command-id strings byte-identical; actions.h shim carrier retired

src/shell/actions/prune_action.h

@@ -0,0 +1,22 @@
+#pragma once
+// prune_action — the "Prune bank folder" action body (Phase R3; Q-W4 split of
+// actions.cpp). This is the SOLE file-deletion action in ReaSampler, isolated in its
+// own TU so the deletion authority is one obvious module on the actions side (its
+// persist-side counterpart concentrates into prune_fs in Q-W5). Registration and
+// hookcommand routing for its FOREVER-STABLE id (BANK_PRUNE_FOLDER) stay with the
+// bank family (bank_actions) — one registration flow, one guarded body here.
+//
+// Contract (preserve exactly): dry-run first; abort outright on unreadable usage
+// records (pS-usage fail-safe); confirm-with-manifest before any deletion; opens NO
+// undo point and writes NO ext state (file deletion is not REAPER-undoable). Routes
+// to persist's public session API only (pruneDryRun / pruneOrphanSet / pruneReclaim).
+
+namespace reasampler {
+
+class ReaSamplerSession;
+
+// Runs the guarded prune flow against `session`. Called by the bank family's
+// hookcommand handler when the BANK_PRUNE_FOLDER action fires.
+void doBankPruneFolder(ReaSamplerSession& session);
+
+}  // namespace reasampler