v2.2.8

Added

• heimdall-cli now exposes OK-metric detail strings via a new details object (metric name → detail text). Info metrics (host.version, host.gpu, host.os, host.cpu, host.kernel, host.arch) carried their value in the detail with a zero gauge, so the CLI showed 0 and dropped the string. Now heimdall-cli host <id> | jq -r '.details["host.version"]' works, and gpu.vram's 43/122 GB shared note is scriptable too. metrics stays value-only, so existing scripts are unaffected.