[MLModel compileModelAtURL:] fails on macOS 26, breaking inmem_bench,
sram_bench, and sram_probe. This switches all three to generate MIL text
and weight blobs programmatically in memory (matching the working
inmem_peak.m approach), bypassing CoreML disk compilation entirely.
- inmem_bench.m: replace CoreML compile + file read with genMIL/buildWeightBlob
- sram_bench.m: switch from _ANEClient/_ANEModel to _ANEInMemoryModel API
- sram_probe.m: same _ANEClient → _ANEInMemoryModel conversion
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>