- msr.rs: add all Intel RAPL MSR addresses (0x606-0x64D) and AMD Zen
equivalents (0xC0010299-0xC001029B), RaplUnit struct for unit register
parsing with energy_to_uj/power_to_w conversion, read_rapl_energy()
and read_rapl_energy_uj() functions
- acpi.rs: read_rapl_package_energy() now tries MSR first (Intel then
AMD PKG energy MSRs) with unit-based µJ conversion, falls back to
Linux powercap sysfs
- local/docs/RAPL-IMPLEMENTATION-PLAN.md: comprehensive 3-phase plan
based on Linux 7.1 kernel analysis, Intel SDM, Fuchsia RFC-0203
patterns. Documents P0 blocker: /scheme/sys/msr/ not implemented
in kernel
