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The 4403-session crash is fixed and hardware-verified, so the handoff now records the full causal chain (missing BOARD_HAS_PSRAM -> PSRAM never in heap -> bad_alloc abort in the connect-time manifest walk) instead of an open bug. The coredump section becomes the recipe that actually worked, including the discovery that a panic reboot leaves the USB pads with the OTG controller - there is no USB-Serial-JTAG window to race after a crash; only a power-on reset or BOOT+RST brings the port back. New traps: the Kconfig choice-collision that silently discards coredump config, Homebrew's pio 6.1.18 uninstalling the platform, and BOARD_HAS_PSRAM being mandatory on PSRAM boards. The cross-core tud_network_can_xmit() theory moves to ruled-out-as-the-crash but stays in the backlog as a real threading-contract violation with a proposed one-line fix. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>