Parallelize 4 code-simplification plans across subagents (Kotlin Multiplatform)
Session from pi-coding-sessions on Hugging Face by championswimmer · MIT · condensed by Coders Talk
Implement the first 4 code-simplification plans in .agents/plans/27-code-simplification/ by spawning parallel subagents, each committing their own changes while coordinating via /messenger.
- +0Prompt · +0Implement the first 4 simplification plans in .agents/plans/27-code-simplification/, spawning subagents per plan and sub-subagents for parallel understanding, coordinating via /messenger, each committing only their own files.
- +0mAgent did · +0mListed the plan directory to identify the first 4 simplification plan files (CLI, sharedlib, compose, android).
- +0mFail · +0mTried to spawn a subagent named 'simplify_cli' but got 'Unknown agent' error — agent name didn't exist in the system.
- +0mAgent did · +0mListed available agent types, then re-spawned using the correct 'worker' agent type for all 4 plans; all 4 tasks succeeded, deleting/refactoring files like AccountsViewModel.kt and summarizing changes per plan.
- Break · 34m away, not counted
- +0mAgent did · +0mChecked git status and log, confirming branch was 15 commits ahead of origin with each subagent's work committed separately.
- +0mAgent did · +0mReviewed diffs and plan files (e.g. 08-simplify-website.md, 00-overview.md) to verify which waves/phases of the overall program were completed.
- +1mAgent did · +1mEdited 00-overview.md to mark all 4 waves as completed and committed the doc update, also removing a stray .pi/messenger/feed.jsonl file.
- +1mOutcome · +1m4/4 subagents succeeded implementing the CLI, sharedlib, compose, and android simplification plans, each committing separately; overview doc updated to mark all waves complete, branch left 15+ commits ahead of origin.
I'd start by pre-registering the correct subagent name ('worker') in the prompt so I don't waste a round-trip hitting an 'Unknown agent' error before it even starts. Once that was fixed, letting the 4 subagents run in parallel and commit their own slices worked well and I mostly just verified via git log/diff afterward. Next time I'd also have it check off the overview doc automatically as part of each plan's completion instead of doing that as a manual follow-up step.