Yichen Jiang 0b3ac6356b fix(preset): correct the composition-authoring skill and give it a real check ...

The `cordis` preset's `editing-cordis-compositions` skill is the only guidance
an agent has when it authors a preset, and four of its statements were false.

`tool-bash` was named as the worked example of a row that hides a service; it
provides nothing and injects `bashEnv` from the host's own `bash-env` row, so
following that advice strands the row behind its realm and the preset fails to
mount. The `isolate` example composed `tasks-local` with `tool-tasks`, which
the shipped compositions' own comments say breaks `run_in_background`. A string
realm label was described as pooling one instance; labels join realms and
`provide()` still throws on the second registration. Rows were to be checked
against a package README, which no harness package publishes.

Verification is now the agent's own: `standingKeyFor(id)` runs the same mount a
session start performs and rejects an unresolvable package, an invalid config, a
service in the root realm, and a row that never activated. The skill states that
`list()`'s `broken` field is a shape check that every one of those passes, ships
the `cordis_mount` plugin that reaches the roster service, and names `copy()` as
the authoring write. The prohibition on touching the shipped install is promoted
to its own section and extended to the host composition.

Fixes #2266

2026-08-11 17:43:09 +08:00

..

agent-presets

fix(preset): correct the composition-authoring skill and give it a real check

2026-08-11 17:43:09 +08:00