The old $DSH_HOME/config.yaml personal overlay returns under the profile
scheme's filename: machine-local preferences that apply to every profile,
loaded after the profile's own cordis.patch.yml (so the home layer outranks
it) and before --patch overlays and flag patches. Both user layers are
hot-reloaded on long-lived surfaces and shown in --dump-config with their
own provenance labels; the built-bin e2e covers the home layer landing live.
dsh --profile <name> replaces the fixed entry modes: --config and -p are
removed, --patch adds overlays over the composed profile, a positional task
selects one-shot mode (requires the headless-runner row), and dsh web stays as
the alias for --profile web carrying the Web flag family as patches. dsh
plugin --profile <name> forwards verbatim to pnpm in the profile directory,
initializes on first use, and reconciles the dsh.plugins layer list after
add/remove (patch-less packages warn and stay plain dependencies). Config
dumps and the keyless web e2e scaffold compose the same bundle layers over the
same empty root as the boot.
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