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deckd: commit staged content idempotently by operation ID with HEAD compare-and-swap #5

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Merged
lukemelia merged 3 commits into from
Oct 27, 2026
Merged

deckd: commit staged content idempotently by operation ID with HEAD compare-and-swap #5

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ec26cb6
Commit staged content idempotently by operation ID with HEAD CAS
lukemelia Oct 26, 2026
c8ccedb
Harden explicit commits: paths, NFS locking, init races, typed errors
lukemelia Oct 26, 2026
812d3e3
Make explicit commits crash-safe and refuse reused operation IDs
lukemelia Oct 26, 2026
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8 changes: 7 additions & 1 deletion .github/workflows/ci.yml
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Expand Up @@ -51,10 +51,16 @@ jobs:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v6
# Run cargo from packages/deckd so rustup picks up its rust-toolchain.toml.
- name: Show Rust toolchain
working-directory: packages/deckd
run: rustc --version && cargo --version
- name: Build deckd
run: cargo build --locked --manifest-path packages/deckd/Cargo.toml
working-directory: packages/deckd
run: cargo build --locked
- name: Test deckd
working-directory: packages/deckd
run: cargo test --locked
- name: Preserve deckd for collaboration replay
uses: actions/upload-artifact@v4
with:
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12 changes: 12 additions & 0 deletions docs/deck-daemon.md
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Expand Up @@ -194,6 +194,18 @@ History (compat with today’s historyd client in
| `POST /file-list-at` | `{ dir, revisionId }` | paths — **close the CLI gap** |
| `POST /restore-plan` | `{ dir, revisionId }` | `{ writes, deletes }` |

Explicit commits, for a writer that stages content itself and must record each
write exactly once. These address a bare history repo by path rather than a
depot; the [deckd README](../packages/deckd/README.md#explicit-commits) has the
full contract:

| Route | Body (sketch) | Result |
| ----------------- | -------------------------------------------------------------------- | --------------------------------------------------------- |
| `POST /commit` | `{ repo, parent, operationId, author, message, trailers?, changes }` | `{ revision, tree, created, replayed }`, or a typed error |
| `POST /outcome` | `{ repo, operationId }` | `committed` + revision, or `absent` (fences the ID) |
| `POST /head` | `{ repo }` | `{ revision, tree }` |
| `POST /tree-hash` | `{ repo, revision }` | `{ tree }`, the git tree ID |

Build (deferred — **not** on the Hub serve path):

| Route | Body (sketch) | Result |
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