- task schema: optional workspace (absent | :run ephemeral | named
persistent under dataRoot/workspaces) and capabilities.tools (pi
documented tool allowlist); strict validation, traversal-proof names
- runner: creates host workspace, passes MOSAIC_WORKSPACE (container
path) + MOSAIC_TOOLS; result.json records both
- pi adapter: cds into workspace; --tools when allowlist present else
--no-tools
- mock adapter: logs delivered MOSAIC_* vars to stderr as deterministic
plumbing evidence (dash prints 'export K=v', so use env not export)
Closes#20