feat(runtime): korg parallel — verifiable parallel runs (fan → pick winner → seal)#20
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feat(runtime): korg parallel — verifiable parallel runs (fan → pick winner → seal)#20New1Direction wants to merge 1 commit into
New1Direction wants to merge 1 commit into
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…inner → seal) Fan one task across N isolated git worktrees, run the honest run_once pipeline in each, pick a winner deterministically (compiles → smallest real diff, ties to lowest index), and seal the whole fan-out as ONE korg-ledger@v1 journal that korg-verify accepts — provable parallel runs, not just compared ones. - crates/korg-runtime/src/parallel.rs: select_winner (pure, unit-tested), build_fanout_events (hash-chained causal DAG via ledger_chain primitives), run_parallel (worktree-per-candidate, loser cleanup, winner kept on a mergeable branch). - src/main.rs: `korg parallel <task> [-n N] [--repo P]` subcommand. Verified: 6/6 unit tests; e2e `korg parallel ... -n 2` on the fixture → korg-verify: 'journal VALID — 4 events, hash-chain + DAG intact'. The live multi-candidate fan-out (--provider ollama) is the user's to run.
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What
korg parallel "<task>" -n N— fan one task across N isolated git worktrees, run the honestrun_oncepipeline in each, pick a winner deterministically, and seal the entire fan-out as onekorg-ledger@v1journal thatkorg-verifyaccepts.This is "compare N attempts" (table-stakes for agent IDEs) plus the thing only Korg can do: the parallel run is independently verifiable, not just eyeballed.
How
crates/korg-runtime/src/parallel.rsselect_winner— deterministic: compiles → smallest real diff → lowest index (no extra model call). Unit-tested.build_fanout_events— a hash-chained causal DAG (parallel_prompt → candidate×N → winner_selected) built from the sameledger_chainprimitivesrun_onceuses, so it verifies byte-identically.run_parallel— worktree-per-candidate, loser cleanup, winner kept on a mergeable branch.src/main.rs—korg parallel <task> [-n N] [--repo P], mirroringrun-once's provider/repo handling (--provider ollamafor live diverse candidates).Verified
korg parallel "..." -n 2on the bundled fixture →korg-verify: "journal VALID — 4 events, hash-chain + DAG intact".Not in this PR (follow-ups)
korgcertcertificate over the fan-out journal (onekorg-sealstep).