feat: Qt-free clients for apps (client mode, typed collections, logos_generate_clients)

[dlipicar]

Stacked on the peering branch (#172). A standalone C++ app (not a module) can generate typed clients for any module from its .lidl. The clients call through the app's own runtime, whether the module runs locally or is imported from a peered runtime. Module builds are byte-identical.

• Generator:
  • --lidl X.lidl --api-style lp [--output-dir D] writes only <module>_api.{h,cpp}: no umbrella, no Qt. It is byte-for-byte the --dep wrapper modules already get.
  • Opt-in --typed-collections types [T], {tstr: T} and positional ?T through lidlTypeToStdCdylib and the protocol's codecs. Without it, nothing changes.
• LogosCore: shellName() and client<T>(), which builds a generated client that calls as the shell; its calls use the credential start() adopted into the plain protocol image. The header's C mirror gains logos_consumer_call_async.
• Build helpers: CMake logos_generate_clients(TARGET t LIDL a.lidl… [TYPED_COLLECTIONS]), shipped in the package config and running the generator at build time; nix lib.mkClients { system; lidls; typedCollections; }.

Verified (macOS):

• Unit tests: checks.aarch64-darwin.tests 432/432.
• Checks: generator-cli (5 new assertions), module-impl-abi, mk-clients, and clients-cmake. The last builds from the installed package, links the real plain protocol, and runs.
• Round trips: the generated clients compile and round-trip a record of records, a uint > 2^32, a high-byte bstr, typed maps and lists, and both states of ?T. Mutations of the lenient decode, the record codec and the record qualification each fail these tests.
• Byte identity: base and head generators over all 69 workspace .lidl files, in every mode, give 0 differences across 4,005 files.
• End to end: bc-watch, a C++ client in logos-core-demo (local for now), runs a runtime of its own through LogosCore. It builds peering_module's and blockchain_module's clients with logos_generate_clients, links a logoscore daemon through its local invite, and imports its devnet node. It read height 8,519 and received live newBlock events.

Pre-existing emitter bugs found by compiling every contract's client, not fixed here because fixing them changes module output: a parameter named timeout_ms redefines the wrapper's own, C++-keyword names, and recursive records.

Android. packages.aarch64-android is the Qt-free SDK (nix/default.nix { qt = false; }): the headers and the CMake package a plain module or an app builds against on Android. It ships no generator, since generators run on the build machine. The last commit pins logos-co/logos-nix#16 and logos-co/logos-protocol#100 until they merge.

Stacked on #172. The CI on this repo runs for PRs into master, so read the checks above.

🤖 Generated with Claude Code

[github-actions]

📊 cpp-sdk doc-test report

The real accounts module, run through a logoscore daemon with the whole stack built against this commit of the C++ SDK — rendered alongside the commands actually run and their output (updated each run, commit 0002196):

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• macos-latest report

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