Compound Refresh

Audit the learnings under <root>/solutions/ against the current codebase, apply the maintenance actions the evidence supports, and deliver a complete per-doc report plus committed changes. The report and the corrected document set are the deliverables. The store only compounds value if every doc can be trusted.

Mode

Read references/modes.md now. It reads the mode off the arguments and owns what each mode may apply unattended, the stale-marking fallback, the question tools, and the CONCEPTS.md bootstrap.

Two rules hold in both modes. A failed write is recorded as recommended, and the run continues. And a question is asked through the host's blocking tool, or through the numbered-options fallback that reference defines — never silently skipped.

Artifact Root

Resolve <root> when you first compose a <root>/solutions/ path. Pass the resolved <root>/solutions/ path to any subagent, not the config. Every subagent spawn omits the mode parameter, so the user's permission settings apply.

Classify a rejected subagent dispatch by whether an agent launched: correct a pre-launch argument rejection once, leave capacity-limited work queued, and if another launch failure survives correction, perform that pass in the orchestrator with the same inputs and report the substitution.

Resolve the CE artifact root <root> before composing any artifact path.

• Read docs_root from <repo-root>/.compound-engineering/config.yaml only (<repo-root> = git rev-parse --show-toplevel). Do not read it from config.local.yaml. Unset -> <root> is docs, exactly as before.
• Validate a set value: a repo-relative directory whose real, symlink-resolved path stays inside the repo and is neither the repo root nor under .git/. Otherwise stop with an error naming docs_root and the value -- never fall back to docs.
• Use <root> as the sole artifact location: create it if absent, compose each path as <root>/<subdir> with this skill's own subdirectory, and never also read docs.

Scope

Candidates are the .md files under <root>/solutions/, excluding README.md and anything under _archived/. A hint that matches nothing never widens the scope. Read references/scope.md for the narrowing strategy, what each mode does on a miss, the empty-store message, triage order, and the README-row cleanup each action carries.

Investigate

Read references/investigate.md for the staleness dimensions, auto-memory rules, subagent roles, and category-shape notes.

Check each learning against the current codebase, then check the set for overlap, supersession, and contradiction. A contradiction misleads actively, so it outranks individual staleness.

A knowledge-track learning sometimes points at a guidance file it names or links — a skill's SKILL.md, a runbook, an instruction file. Compare only guidance the learning names. Never search the guidance layer for one.

Every investigation subagent's prompt carries that reference's three Subagent prompt clauses verbatim. Two are search tools and auto-memory. The third is this:

If the learning is knowledge-track and names or links a guidance file (a skill's SKILL.md, a runbook, a root instruction file), read that file and, when it states a different order or a contradictory rule for the same procedure, return both conflicting quotes plus which side current code follows — or that code witnesses neither. Read only guidance the learning names; do not search for one, and do not edit it.

Classify

Every doc gets exactly one outcome: Keep, Update, Consolidate, Replace, or Delete. A doc is never archived in place: there is no _archived/, since version history is the archive.

Read references/classify.md before assigning any of them. It owns each outcome's meaning, the Update/Replace boundary, the auto-delete gate and its pre-checks, the relocation and split rules, the retrieval-value test, unverifiable-is-not-false, pattern docs, and what interactive mode asks.

Two boundaries hold whatever the evidence says. When code and doc disagree, the doc changes and the code does not — code review is out of scope. And when a learning contradicts guidance, the refresh reports that; it must never edit a skill, runbook, or instruction file.

Execute

Read references/per-action-flows.md and follow the section matching each doc's classification, one flow per doc. It owns the criteria, the relocation and split procedures, the replacement subagent contract, and citation cleanup.

Vocabulary Capture

After the per-doc actions, reconcile the domain terms flagged during investigation with CONCEPTS.md. Read references/concepts-vocabulary.md unconditionally. Its qualifying criteria are non-obvious, so a "nothing qualifies" judgment reached without reading it is a shortcut, not a result.

Edits apply silently in every mode. The report's CONCEPTS.md line records what the scan found, including "scanned, no qualifying terms".

Report

Print the full report as markdown. It is the deliverable, not an internal summary, and in non-interactive mode it is the only one. Keep it self-contained and never abbreviated, split into Applied and Recommended. Read references/report.md for the summary block, per-file detail, and what belongs under Recommended.

Commit

Skip if nothing changed. Otherwise stage only the files this refresh modified, and commit in the repo's convention. Read references/commit.md for the per-mode branch decision and the git-failure fallback.

Discoverability Check

After the report, check that the project's instructions would lead an agent to <root>/solutions/ before working in a documented area. Do this every time: the store only compounds value when agents can find it. Read references/discoverability.md for what the reader must learn, the smallest-addition rule and its tone, the CONCEPTS.md variant, consent versus a report line per mode, and folding a late edit into the commit.

Relationship to ce-compound

ce-compound captures a newly solved problem. This skill maintains the store as the codebase evolves: each doc's accuracy, and the design of the set. Replace only on real evidence; without it, stale-mark the doc and point the user at ce-compound. Consolidate proactively, because every capture adds a doc and redundant docs drift.