build: bump logos-module-builder past 0.2.6 and take the typed records

[dlipicar]

0.2.6's logos-rust-sdk generated the provider trait with serde_json::Value wherever chat_module.lidl declares a record. The newer SDK generates the records themselves, so the trait now reads the way the contract does:

fn init(&mut self, config: ChatConfig) -> Result<Value, String>
fn list_conversations(&mut self) -> Vec<Conversation>
fn get_messages(&mut self, convo_id: String) -> Vec<Message>
fn list_group_members(&mut self, convo_id: String) -> Vec<GroupMember>
fn status(&mut self) -> Status

Nothing here was broken before this. chat_module builds green on 0.2.6. The bump is what the Windows target needs — mkLogosModule only grew an x86_64-windows target after 0.2.6 (#194) — and this migration is its cost. Windows support itself is a separate PR on top of this one.

What the migration deletes

Most of the diff is removal, and it is the interesting part:

• The hand-written #[derive(Serialize)] mirrors — ConversationSummary, StatusView, GroupMemberRow — existed only to be serialised into the shape the .lidl declares. The generated records are that shape, so the getters build them directly. The mirrors are gone, and with them the chance of one drifting from the contract. (GroupMemberRow gaining pending in feat: add display_name field for module #33 was exactly that kind of two-sided edit.)
• chat_config/config_field decoded init's config out of an untyped Value, including the case where logoscore call could only send the record's JSON text — "a record parameter reaches a module as a string or not at all". A typed parameter makes decoding the SDK's job, so both helpers go.

About the tests

The four tests over that decoding covered deleted code and went with it. But they also happened to pin down one thing that is still this module's own — the logos.test default, introduced deliberately in a05d511. Rather than let that coverage evaporate, the defaulting is now delivery_preset() with three tests of its own (named / absent / empty).

Mechanical notes

persistence::DisplayMessage stays the stored shape and is mapped to the Message record at the boundary. Message counts and millisecond timestamps widen to the contract's signed 64-bit numbers.

Cargo.lock moves the logos-rust-sdk path dependency 0.2.0 → 0.3.0 — a one-line change, but a required one, because CI runs cargo test --locked.

The builder is pinned to a rev rather than a tag only because no release carries the typed-record codegen yet; it should go back to a tag ref once one is cut.

Verification

• nix build .#packages.x86_64-linux.default — green, no warnings.
• cargo test — 31 passed, 0 failed, including the three new ones.

🤖 Generated with Claude Code

---

Update — re-pinned to module-builder master

The pin moved again, from d256a42 to master (e45caf1). d256a42 was picked
only because it was the first commit carrying the Windows cross fixes; there is
no reason to sit between it and master.

Beyond the cross fixes this branch already relied on, e45caf1 brings:

• protocol 0.6 — the caller-identity wave — and a protocol version that
  fails to parse now failing loudly rather than silently vanishing (48cfdbe);
• the SDK chain relocked onto master, including logos-rust-sdk's teardown
  exports (bdc9804) and the lossless Qt type mapping (ba1b0aa);
• ui_qml glue generated by logos-view-generator rather than
  logos-qt-generator (fe4f26c), and the view teardown hook restored along
  with the deduplicated qt-sdk (bc72ce3) — neither reaches this module, but
  logos-chat-ui follows this pin and both reach it there;
• platform-keyed overlays in metadata.json (ad1899d), and an ABI test that
  reads the module-impl exports off the built plugin per backend
  (26a886b).

Verification

On aarch64-darwin, against this lock:

check	result
nix run .#generate	provider backend: 19 methods, 7 events, 1 dep client
cargo fmt --check	clean
cargo clippy --locked --all-targets -- -D warnings	clean
cargo test --locked	31 passed, 0 failed
nix build .#default .#lgx-portable	green, darwin-arm64 variant

The Windows target in #66 (which stacks on this) still evaluates end to end on
the new pin: nix build --dry-run walks the whole cross closure, and from an
empty chroot store with only the public cache it reports 54 derivations to
build — comfortably inside the cold-derivation-budget: 120 set there.

The one downstream consequence worth naming: the lossless Qt mapping means
optional record fields are now std::optional<QString> rather than QVariant.
logos-co/logos-chat-ui#57 carries that migration and is pinned to this branch's
head.

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[github-actions]

Doc-test report

Headless chat_module instances built against this commit, driven through the 1:1 round-trip and the three-instance group conversation, rendered alongside the commands actually run and their output (updated each run, commit deafa92):

• Execution report

Pages can take a minute to update after the run finishes.

[osmaczko]

Looks good, thanks