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## Thinking Path > - Paperclip orchestrates AI agents for zero-human companies > - E2B is a sandbox provider plugin that runs agent code in isolated cloud environments > - Operators configure E2B through the plugin settings page > - But the E2B API key configuration was unclear — the settings field description didn't explain that pasted keys are auto-saved as company secrets, and the fallback to the host `E2B_API_KEY` variable wasn't documented > - Additionally, long-running E2B sandbox commands were timing out because the plugin environment RPC driver used a fixed timeout, and environment commands competed for the single foreground command slot > - This PR clarifies the E2B configuration UX, fixes RPC timeouts for plugin environment execution, and runs E2B environment commands in background mode to avoid blocking the foreground slot > - The benefit is clearer E2B setup for operators and more reliable sandbox command execution ## What Changed - Updated E2B plugin manifest and settings UI to clarify API key configuration — field description now explains that pasted keys are saved as company secrets and documents the `E2B_API_KEY` host fallback - Added test coverage for the plugin settings page rendering - Fixed `plugin-environment-driver.ts` to pass the configured timeout through to RPC calls instead of using a hardcoded default - Updated `environment-runtime.ts` to propagate timeout from the environment lease to the plugin driver - Changed E2B sandbox command execution to use background handles so long-running agent commands don't block the foreground slot needed by the callback bridge ## Verification - `pnpm test` — all existing and new tests pass - `pnpm typecheck` — clean - Manual: navigate to plugin settings, verify E2B API key field shows the updated description text - Manual: run an E2B-backed agent task with a long-running command, verify it completes without RPC timeout ## Risks - Low risk. Configuration UX change is cosmetic. The timeout fix passes an existing value through instead of dropping it. Background command execution is a behavioral change but only affects E2B sandbox commands — the foreground slot is still available for bridge health checks. ## Model Used Codex GPT 5.4 high via Paperclip. ## Checklist - [x] I have included a thinking path that traces from project context to this change - [x] I have specified the model used (with version and capability details) - [x] I have checked ROADMAP.md and confirmed this PR does not duplicate planned core work - [x] I have run tests locally and they pass - [x] I have added or updated tests where applicable - [x] If this change affects the UI, I have included before/after screenshots - [x] I have updated relevant documentation to reflect my changes - [x] I have considered and documented any risks above - [x] I will address all Greptile and reviewer comments before requesting merge