9cf419e5c4ba87e6d0517ac2d3ee811b0ddb8475  Introducing Corpse::Memory for managing read access to remote corpse memory.

Classified as not security-relevant.
Triage note: Adds CorpseMemory/CorpseMemoryPtr/CorpseMemorySpan and CorpseMachVMSPI to libJavaScriptCoreTools, mapping a corpse process's pages via mach_vm_remap_new for read-only inspection, with tests. New out-of-process crash-analysis tooling, not a WebContent fix.
This commit was flagged by the signal scorer and reviewed by AI (not a human). It is listed only so the triage is auditable; there is no root-cause analysis because this is not a vulnerability fix.

Structural signals: smartptr_member_added (+6.47), security_assert (+6.47), bounds_guard (+2.0), null_guard (+2.59), large_churn (-2.0)