Greptile Summary

This PR adds plugins.enabled=false as a fast-path across the gateway startup, plugin auto-enable, and doctor stale-plugin cleanup paths. Each affected function now short-circuits early when plugins are globally disabled, avoiding manifest registry loading, auto-enable discovery, and loadPluginLookUpTable. Tests cover all four changed modules. The changes are focused and consistent.

Confidence Score: 5/5

Safe to merge — all fast-path guards are consistent, each function has its own early-return, and new tests confirm the expected bypass behavior.

No P0 or P1 issues found. The plugins.enabled === false guard appears correctly at every relevant call site. The outer guard added in preview-warnings.ts is intentionally redundant — it prevents the dynamic import of stale-plugin-config.js entirely, which is a deliberate optimization. All assertions in the new tests are consistent with the implementation.

No files require special attention.

_{Reviews (1): Last reviewed commit: "Prevent disabled plugins from warming th..." | Re-trigger Greptile}

Landed via rebase onto main.

Proof before merge:

• Blacksmith Testbox: pnpm test:serial src/gateway/server-startup-plugins.test.ts src/config/plugin-auto-enable.core.test.ts src/commands/doctor/shared/stale-plugin-config.test.ts src/commands/doctor/shared/preview-warnings.test.ts && pnpm check:changed && pnpm build
• Result: passed.

Land commit: b716508
Merge commit: 5e8cc1d

Thanks @WuKongAI-CMU.