Phoenix SDR-DSP v1.0.1-rc.2: corrected clean-drive gate

Supersedes RC.1 for clean-drive evaluation. The first independent Windows run of RC.1 passed repository, compilation, header, and canonical-runner hash gates, then stopped before hardware because NumPy was absent. RC.2 adds an explicit -InstallHostDependencies switch pinned to numpy==2.5.2 and records that failure in the publication-readiness history. The canonical runner remains SHA-256 742591321ac5dc3069a51ded4e198905367f8dc6261df8c3ebae20b5e333fbad. CI passed at commit 3b81abb. No new NPU run is claimed.