Add linchpin to Plugins - #183
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A Codex plugin that runs a batch of PRDs as parallel git-worktree lanes. The distinguishing part is the split: the model that implements a lane is never the model that approves it, and the reviewer runs in a separate read-only process, so delivery is gated on the PRD's own negative controls rather than on a worker's summary.
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Adding linchpin under Plugins.
What it is: a Codex plugin that takes a folder of PRDs and builds them. It splits the batch into lanes by file-collision graph, runs each lane in its own git worktree via
codex exec, and reports what shipped and what did not.Why it is not another orchestrator wrapper: the model that writes the code is never the model that approves it. The reviewer is a fresh
codex exec --sandbox read-onlyprocess on a different model, and a lane cannot be recorded as delivered without observed-red evidence for every negative control the PRD declared — the helper verifies the commit sha resolves before it will write the row. Executing an existing PRD never rewrites it; sections a PRD does not declare are reported missing rather than invented.Full disclosure: I am the author and the project is new (MIT, CI green, 39 tests including observed-red controls). Happy to trim the description or move it to Multi-Agent Orchestration if you prefer that section.