Brummel
88045a485b
18c.3's is_rc_heap_allocated returned false for any Term::App shape; the doc-comment explicitly deferred the owned-returning-call case to 'later iters tied to (own) ret-mode contracts'. We have those contracts (Iter 18a). With this iter the predicate widens to recognise Term::App whose callee carries ret_mode=Own; the let- scope close emits a drop call, routing through the per-type drop fn derived from the call's return type so the cascade walks ptr children correctly. Borrow- and Implicit-returning calls are still not trackable — they don't carry the static caller-owns-the-return signal. drop_symbol_for_binder gains an App arm that synthesises the return type and resolves drop_<m>_<T> from it (same shape as the existing Ctor arm), with cross-module qualification through import_map. emit_inlined_partial_drop now defaults to shallow ailang_rc_dec when value is not Term::Ctor — that path is the dynamic-tag partial-drop debt 18d.4 already documents (the runtime tag of a let-binder whose value is Term::App is not statically known, so per-field partial-drop emission is not usable; closing this remaining leak path requires a tag- conditional helper, queued as future work). Red: alloc_rc_let_binder_for_owned_returning_app_drops_at_scope_close on examples/rc_let_owned_app_leak — pre-fix live=3 (TNode + 2 TLeaf), post-fix live=0. End-to-end: bench_latency_explicit under --alloc=rc now reports allocs=11068575 frees=11068575 live=0. The depth-19 Tree cache + all 10M per-op IntList cells deallocate cleanly. Decision 10's prompt-deallocation property now holds end-to-end on the canonical bench fixture.