What problem does it solve? When a capability must be recognized by the compiled Catalyst Code binary in any workspace—including a fresh install with no source tree or skills on disk—opt-in skills are not enough because they are not shipped by the installers. This Skill guides you through embedding a lean pointer into the always-injected system prompt so the agent recognizes the task everywhere. ## Core Features & Use Cases - Embedded const authoring: Add a raw-string const in core/src/main.rs near SYSTEM_PROMPT_BASE, PLUGIN_DOCS, and PROVIDER_GUIDE containing task recognition, a decision rule, and minimal actionable detail. - Correct injection placement: Inject unconditionally before the if with_skill block for main agent and subagents, or inside it for main-only visibility. - Size-guard maintenance: Update the standing_prompt_stays_lean_and_defers_plugin_manual test by adding the new const's length to the fixed sum and raising the ceiling modestly when needed. - Use Case: A user asks to ensure the core knows how to add providers via config or plugins; you add a ~1245-char PROVIDER_GUIDE const, inject it after PLUGIN_DOCS, and raise the test ceiling from 3500 to 4500. ## Quick Start Ask the agent to make the compiled core aware of a capability by embedding a lean pointer in the system prompt and updating the lean-prompt guard test.