perf(skills): skip router-side bun install in fargate mode - #15
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discover_skills (router-side) ran ensure_skill_deps for every skill on every prompt-build — ~80s of bun install blocking each turn — even though in cloud mode the router never executes skills (the worker does, installing deps on call). Gate the install on the deployment running turns on this host's skills dir (local/subprocess/docker); skip for fargate (remote worker, own skills copy). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Summary
In the distributed (fargate) deployment, the router was running
bun installfor every skill on every prompt-build — ~80s of blocking work per turn — even though it never executes skills. Skill execution (and on-demand dep install) happens on the worker, which hydrates its own skills copy.discover_skills(router-side only —onboarding/channels, nevercica worker) calledensure_skill_depsunconditionally. This gates it on whether turns execute against this host's skills dir:New
config::prep_skill_deps_locally(provider)helper, unit-tested.Test Plan
cargo test --bin cica— 85 pass (incl.skill_deps_prepped_locally_except_fargate)cargo clippy --bin cica— 0 warningsInstalling dependencies for skill: …storm is gone on the router, and a config-using skill still runs on a worker.Deploy note
Router-side change — needs a new cica release + the router updated to it (worker image unaffected; workers don't call
discover_skills).🤖 Generated with Claude Code