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web/.agents/skills/cavecrew/README.md

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+# cavecrew
+
+Decision guide. When to delegate to caveman subagents instead of doing the work inline.
+
+## What it does
+
+Tells main thread when to spawn a caveman-style subagent. Compact return
+contracts can reduce repeated prose when results return to main context, but
+effect depends on task, agent, and delegation count. This skill publishes no
+universal reduction rate.
+
+Three subagents:
+
+| Subagent | Job | Use when |
+|----------|-----|----------|
+| `cavecrew-investigator` | Locate code (read-only) | "Where is X defined / what calls Y / list uses of Z" |
+| `cavecrew-builder` | Surgical edit, 1-2 files | Scope is obvious, ≤2 files. Refuses 3+ file scope. |
+| `cavecrew-reviewer` | Diff/file review | One-line findings with severity emoji |
+
+Use vanilla `Explore` or `Code Reviewer` when you want prose, architecture commentary, or rationale. Use main thread directly for one-line answers and 3+ file refactors.
+
+This skill is a decision guide, not a slash command. It activates when the conversation mentions delegation.
+
+## How to invoke
+
+Triggers on phrases like "delegate to subagent", "use cavecrew", "spawn investigator", "save context", "compressed agent output".
+
+## Example chaining
+
+Locate → fix → verify (most common):
+
+1. `cavecrew-investigator` returns site list (`path:line`, symbol, note)
+2. Main thread picks 1-2 sites, hands paths to `cavecrew-builder`
+3. `cavecrew-reviewer` audits the resulting diff
+
+Parallel scout: spawn 2-3 `cavecrew-investigator` calls in one message with different angles (defs, callers, tests). Aggregate in main.
+
+## Model overrides
+
+By default, `cavecrew-reviewer` and `cavecrew-investigator` pin `model: haiku` in their frontmatter; `cavecrew-builder` has no `model:` line (uses the API session default). Set env vars in your shell before launching Claude Code to override per-agent:
+
+| Env var | Agent |
+|---|---|
+| `CAVECREW_REVIEWER_MODEL` | `cavecrew-reviewer` |
+| `CAVECREW_BUILDER_MODEL` | `cavecrew-builder` |
+| `CAVECREW_INVESTIGATOR_MODEL` | `cavecrew-investigator` |
+
+Example: run reviewer on sonnet and keep others on default.
+
+```sh
+export CAVECREW_REVIEWER_MODEL=sonnet
+```
+
+Use the same model name strings you'd use in any Claude Code agent frontmatter (e.g. `haiku`, `sonnet`, `opus`).
+
+Overrides patch only `model:` line in installed agent frontmatter; prompt body
+stays untouched and continues receiving upstream updates. Only plugin installs
+have local agent files to patch. Empty variables do nothing. Patch persists until
+plugin update or reinstall.
+
+## See also
+
+- [`SKILL.md`](./SKILL.md): full decision matrix and output contracts
+- [`agents/cavecrew-investigator.md`](../../agents/cavecrew-investigator.md)
+- [`agents/cavecrew-builder.md`](../../agents/cavecrew-builder.md)
+- [`agents/cavecrew-reviewer.md`](../../agents/cavecrew-reviewer.md)
+- [Caveman README](../../README.md): repo overview