Agent Return

Installer/configurator skill. It wires a hook pair plus their shared module (SubagentStart contract + SubagentStop guard) that puts a SIZE budget on every subagent's final return message — or configures/removes them. All runtime behavior lives in the hook files and in a JSON config; this skill only decides mode, scope and the two thresholds, then delegates the file work to the brewcode:hook-creator agent following the runbook.

Subagent returns are the largest single context cost in a manager session. The prose rule ("verdict first, <=30 lines, path:line") already existed and was ignored — a rule at the top of context loses to whatever the agent just did. This pair restates it mechanically at the moment it bites: the contract is injected at spawn, and at return the message is sized (chars/4) and compared against two integers. No LLM judge anywhere — a number comparison.

Prompt contract

Position 1 of $ARGUMENTS is a free-form prompt (RU/EN) — modes and flags are optional and may follow in any order. Nobody types keys: resolve mode + scope FROM the prompt.

1. Strip flags. An explicit mode token anywhere wins outright, no scoring.
2. Else score modes by distinct whole-word keyword hits (table in Step 2). Highest unique score wins. Tie with a destructive mode (purge) -> AskUserQuestion; tie with status -> status; tie of two mutating modes -> the keyword appearing first; all zero -> status.
3. Empty arguments -> status; ask ONE scoping AskUserQuestion only when the answer changes what gets written. A read-only run asks nothing.
4. Outcome-changing ambiguity -> ONE AskUserQuestion (max 4 questions) BEFORE any work.
5. Prose that is not a mode/id/path is still input: extract the id, path or target from it.