DC 2.0 S8: zero-loss E2E harness + Jazzy CI, and Bridge Rust→C++ (ADR-0007) - #269
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…e 1) Two intertwined deliverables, verified together under real ROS 2 Jazzy. Zero-loss E2E harness + Jazzy CI (#249), Podman-based (no Docker): - tools/e2e/: podman-compose harness (Vector + PostgreSQL + RustFS) running a 20-Measurement@1Hz + camera reference workload; hard-failing exactly-once / no-gap / File-consistency verification; startup-latency (<10s) and induced-outage + full-restart gates; informational CPU/RSS sampling. - One shared workspace image (tools/e2e/Containerfile) built by scripts/build.sh and used by both the harness (Containerfile.e2e FROM it) and CI (colcon test via scripts/test.sh); registry-backed --cache-from/--cache-to. - .github/workflows/ci.yaml replaces the humble industrial_ci workflow on this branch (jazzy can't build the Fluent Bit / dc_destinations packages anyway). Bridge reverted from Rust (rclrs) to C++ — ADR-0007 supersedes ADR-0004: - The rclrs/ros2_rust pilot could not deliver plug-and-play on Jazzy today (no stable rosidl_generator_rs; source-built message repos; incomplete colcon-ros-cargo link-flag generation). dc_bridge is now plain ament_cmake C++ (rclcpp): Forwarder (msgpack-cxx), Supervisor (fork/exec/PDEATHSIG), Readiness, TopicConfig, the ADR-0003 ConfigRenderer (toml++), and BridgeNode. - Builds with plain `rosdep install` + `colcon build` like every dc_* package: the entire Rust toolchain, colcon-cargo, rosidl_rust, source-built message repos, and every COLCON_IGNORE/--skip-keys workaround are gone. Verified: colcon build --packages-up-to dc_bridge succeeds and 63 gtests pass. - The one non-rosdep dep (header-only tomlplusplus/msgpack-cxx) is resolved via a small repo-local rosdep source (rosdep/dc.yaml). Records path only; the File Uploader (ADR-0005, aws-sdk-cpp) is Phase 2 — aws-sdk-cpp<->RustFS put/multipart already verified live. Fixes a stale dc_destinations exec_depend in dc_cli left over from #242. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0155z4WEezE9gofR1zkHbMxK
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…-0005) Completes the Rust→C++ Bridge reversion (ADR-0007). Adds the File-upload pipeline the Records path (Phase 1, 6c1c1c7) deferred. - New aws_sdk_vendor package: builds aws-cpp-sdk-core+s3 from source (pinned tag 1.11.600, -DBUILD_ONLY=s3, zlib compression off), installs a relocatable AWSSDK CMake config so dc_bridge resolves it via colcon/CMAKE_PREFIX_PATH. aws-sdk-cpp verified working against RustFS (PutObject + real multipart, with and without the SDK's default request checksums) before adoption. - C++ Uploader (dc_bridge/src/uploader/, faithful port of the Rust modules): group (parses local_paths/remote_paths File refs), content_type (magic-byte sniff + UTF-8 text), status (Humble-compatible row shapes), multipart (resumable multipart with a per-part JSON checkpoint sidecar), and the verify-then-delete orchestration. Built on an abstract ObjectStore interface, so the logic is gtest'd against an in-memory fake with no cloud dependency — the same split the Rust design had with object_store's InMemory. The aws-sdk-cpp S3ObjectStore (s3_object_store.cpp) is the only piece linking the SDK, kept out of the aws-free core so unit tests need no cloud. - BridgeNode wires the Uploader: files-destination inputs are subscribed and queued to a worker thread that uploads Files and emits dc.files status Records through its own Forwarder (infinite capped-backoff retry, safe because processing is idempotent). The Records path is unchanged. - Docs: dc_bridge/README.md rewritten for the C++ package; ADR-0007, CLAUDE.md, destinations.md de-Rusted; progress.txt updated; doc/src/dc/logo_prompt.md added (new-logo AI prompts). Verified in a real ROS 2 Jazzy container: colcon build --packages-up-to dc_bridge succeeds (aws_sdk_vendor built + linked), and all 75 gtests pass — the 11 uploader cases (happy path, metadata shape, verify-retry, delete-after-verified-everywhere, no-dup-rows, missing-file, partial-vs-complete group, video duration, ffprobe parse, interrupted-multipart-resume, no-files) against the in-memory fake. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0155z4WEezE9gofR1zkHbMxK
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The workspace image (tools/e2e/Containerfile) built for `colcon test` is now pushed to ghcr.io after the build+tests pass, tagged the way ~/dev/monorepo's image-ref action does it: an immutable `:<sha>` ref on every event, plus a floating `:<branch-slug>` ref on non-PR pushes. Image name is lowercased for ghcr. Signed-off-by: David Bensoussan <d.bensoussan@proton.me> Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0155z4WEezE9gofR1zkHbMxK
The bucket-creation step used `podman run minio/mc ... sh -c '...'`, but the minio/mc image's entrypoint is `mc`, so the `sh` became `mc sh` and failed with "`sh` is not a recognized command" — breaking CI's Postgres+RustFS setup and the local harness before the pipeline ever ran. Rather than patch the mc entrypoint, drop the MinIO client entirely: it's a separate, dated object-store client, and RustFS speaks plain S3. Use the AWS CLI over `--endpoint-url` instead — the same S3 protocol dc_bridge's Uploader talks via aws-sdk-cpp — so the harness has one object-store client, not two. Verified locally against rustfs/rustfs:latest (make_bucket + s3 ls round-trip). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0155z4WEezE9gofR1zkHbMxK Signed-off-by: David Bensoussan <d.bensoussan@proton.me>
`FROM toolchain AS workspace` bought nothing: the workspace stage just continued FROM toolchain and kept everything it built — no slim runtime `COPY --from`ing a subset, and nothing (`--target`, `--from=`, Containerfile.e2e) ever referenced the stage names. Multi-stage only pays off when a later stage selects a subset of an earlier one's output; a linear keep-everything chain gets the identical build-cache behaviour from ordinary per-RUN layer caching, so the apt/toolchain layer stays a near-permanent `--cache-from` hit either way. Collapse to one stage and correct the comment/README/build.sh notes that claimed the split was needed for cache value. Also drops a stale "Rust dc_bridge" mention in the README left over from before ADR-0007. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0155z4WEezE9gofR1zkHbMxK Signed-off-by: David Bensoussan <d.bensoussan@proton.me>
…vider Two failures the harness hit once earlier steps stopped masking them: test.sh — the in-container `colcon test` script runs `set -u`, then `source install/setup.bash`, which references unset vars (COLCON_TRACE, AMENT_TRACE_SETUP_FILES) and aborted with "COLCON_TRACE: unbound variable". Source the setup files with nounset off, then restore -u. Verified locally: 84 tests, 0 failures. run.sh — `podman compose` prefers the docker-compose cli-plugin when present, which drives a Docker-compatible API socket (the rootless Podman socket) that isn't running in a bare shell, so compose died with "daemon not running". Pin PODMAN_COMPOSE_PROVIDER=podman-compose: it shells out to `podman` directly, no socket and no Docker binary (CLAUDE.md "Containers: Podman, not Docker"), same provider locally and in CI. The e2e CI job installs podman-compose (not shipped on the runner); run.sh preflight-checks for it. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0155z4WEezE9gofR1zkHbMxK Signed-off-by: David Bensoussan <d.bensoussan@proton.me>
Three defects, each surfaced only once the entrypoint fix let the dc container
stay up. Found by running the stack against live Postgres/RustFS and watching
where Records stopped. With all three fixed, all 20 record-Measurements land in
Postgres (~1 Hz each), camera Files upload to RustFS, and File metadata reaches
the pgsql_files table.
1. workload_generator.py named its publisher dict `self._publishers` — the exact
attribute rclpy.Node uses internally for its publisher list. The 14 synth
create_publisher() calls ran during the dict comprehension (before the
rebind), then the camera create_publisher() hit the now-dict and threw
"'dict' object has no attribute 'append'". Renamed to `self._synth_pubs`.
2. e2e_params.yaml had `detection_modules: []` under the camera Measurement. An
empty YAML list has no inferable element type, so when measurement_server
loads as a composable node launch_ros rejects it ("got '()' of type tuple").
The Camera plugin defaults the key to an empty vector, so just omit it.
3. e2e_params.yaml had `inputs: []` on the pgsql_files (Files metadata)
destination. rclcpp can't load an empty array from a params file and
dc_bridge fatal-looped ("parameter_value_from failed ... No parameter value
set") before user code ran. Omit the key — dc_bridge defaults inputs to
empty. Documented the gotcha at the read site in bridge_node.cpp.
4. The 14 synth Measurements are dc_measurements/StringStamped, whose
setValidationSchema() is intentionally empty (arbitrary string payload). With
the default enable_validator:true they failed every tick ("no root schema has
yet been set") and emitted nothing. Set enable_validator:false on them; the
built-in Measurements keep their own schemas.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0155z4WEezE9gofR1zkHbMxK
Signed-off-by: David Bensoussan <d.bensoussan@proton.me>
The e2e job ran run.sh, which called build.sh and rebuilt the whole workspace image from scratch (cache-warmed, but still a full podman build) — even though build-and-test had just built, tested, and pushed that exact image. So CI built the workspace twice, and the harness exercised a *rebuild* rather than the artifact that passed the tests. Split it cleanly: one job builds, the other uses. run.sh now honors DC_WORKSPACE_IMAGE — when set, it pulls that ref (or uses it if already local) and builds the thin Containerfile.e2e layer FROM it, skipping build.sh entirely. The e2e job passes the immutable :<sha> ref build-and-test pushed. Unset locally, run.sh builds dc-workspace:latest from the working tree exactly as before, so a developer's one-command flow is unchanged. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0155z4WEezE9gofR1zkHbMxK Signed-off-by: David Bensoussan <d.bensoussan@proton.me>
…ibed The generator published value 0 the instant the container started, but measurement_server only subscribes once the lifecycle manager activates it — after dc_bridge's readiness gate (ADR-0006). Anything published before then had no subscriber and was dropped, so verify_zero_loss saw a missing value 0 and reported data loss on every synth topic. Wait for a subscriber on each published topic before starting the counters, the same "wait for your dependency before generating load" practice a launch/start script uses — done at the publisher via get_subscription_count(), the exact "pipeline is listening" signal, rather than polling `ros2 topic info`. Value 0 is now delivered. A 30s timeout keeps a genuinely dead pipeline from hanging the generator (run.sh's <10s startup gate fails first in that case). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0155z4WEezE9gofR1zkHbMxK Signed-off-by: David Bensoussan <d.bensoussan@proton.me>
… read
The shipper is at-least-once (Vector disk buffer + end-to-end acks, ADR-0002): it
never loses a record across the outage, but one that was in-flight to Postgres
when the outage hit — committed, ack lost — is re-sent on recovery and lands
twice. Failing the run on that boundary duplicate would demand write-side dedup (a
UNIQUE index + a per-insert skip trigger), taxing every insert forever to erase a
rare, expected re-send. The standard, cheap answer for an at-least-once pipeline
is to dedupe on read.
So verify_zero_loss now:
- fails only on LOSS — synth topics must have every value 0..max present, checked
against count(DISTINCT value) so a re-send can't paper over a real gap;
- reports a boundary DUPLICATE as a note, never a failure (exactly-once on read —
collapse exact re-sends on the natural key, a one-line DISTINCT any consumer
does). The JSON report gains a `notes` list; exit status tracks only violations.
No schema change, no write-path cost. Comments in run.sh / ci.yaml updated to
describe the zero-loss + at-least-once(-deduped-on-read) contract.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0155z4WEezE9gofR1zkHbMxK
Signed-off-by: David Bensoussan <d.bensoussan@proton.me>
The outage/restart lifecycle IS the test (stop the destinations, restart the SUT mid-outage), which GitHub `services:` can't express and which any compose provider only wraps. `podman compose` also cost us a podman-compose install per run and, before that, a docker-compose-plugin/socket dance. So drop compose: run.sh now brings up postgres/rustfs/dc as plain `podman` containers on named volumes (--network host), and stop/start/restart/rm drive the outage, the SUT restart, and teardown directly. Nothing extra to install — podman is always present. verify_zero_loss.py queries via `podman exec <postgres-container>` instead of `podman compose exec`; compose.yaml is gone. run.sh also gains DC_E2E_IMAGE: given a prebuilt dc-e2e image it runs that exact artifact with no build (CI's e2e job uses this); unset, it builds locally as before. measure_resources.sh keys off the fixed container name. README / Containerfile.e2e updated for native podman and the exactly-once-on-read model. Verified locally end-to-end (native run/exec/stop/restart/start, verifier, clean teardown); the readiness gate lands synth value 0, so zero-loss holds with only at-least-once boundary duplicates (deduped on read). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0155z4WEezE9gofR1zkHbMxK Signed-off-by: David Bensoussan <d.bensoussan@proton.me>
…jobs
One job builds each artifact and pushes it; the others pull and use it (build
once, use many), replacing the former build-and-test-does-everything job:
build-workspace ─┬─▶ colcon-test (pull dc-workspace, colcon test + coverage)
└─▶ build-e2e-image ─▶ e2e (pull dc-e2e, zero-loss harness)
The workspace image is built+pushed once and consumed by colcon-test and
build-e2e-image (which stacks the thin harness layer and pushes dc-e2e); the e2e
job runs that exact dc-e2e image via run.sh's DC_E2E_IMAGE — no rebuild, and no
podman-compose install now that run.sh is native podman. Image refs are computed
once in build-workspace and shared via job outputs. Only the immutable :<sha> ref
is published (CLAUDE.md: a floating :<branch> ref waits until the repo publishes
runnable images for others, which it doesn't yet).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0155z4WEezE9gofR1zkHbMxK
Signed-off-by: David Bensoussan <d.bensoussan@proton.me>
`|| true` swallows every failure, not just the expected "nothing to do" one it's usually reached for. Replace each with a guard that ignores only the benign case and still surfaces real errors: - build.sh: the .dockerignore-restore trap runs `mv` only `if [ -f <bak> ]`. - test.sh: coverage generation runs under `if !` and warns on failure (a non-coverage build has no .gcno) instead of masking it. - entrypoint.sh: the shutdown handler scopes errexit off with a comment (killing or reaping an already-exited child returns non-zero, expected during teardown) rather than masking each kill/wait. (run.sh and measure_resources.sh got the same treatment in the native-podman refactor: podman rm --ignore, `podman volume/container exists` checks, `kill -0` predicates, and an if-condition around `podman stats`.) Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0155z4WEezE9gofR1zkHbMxK Signed-off-by: David Bensoussan <d.bensoussan@proton.me>
colcon-test's stores are a genuinely stable dependency (up for the whole job, no outage/restart), unlike the zero-loss harness's stores, which run.sh deliberately drives with native podman because *stopping and restarting them mid-run is the test*. That distinction — not "always avoid compose" — is why run.sh went native and this job goes the other way: a declarative tools/e2e/compose.test.yaml is simpler here and works the same locally. podman-compose is cached (~/.local, keyed on the pinned version) so the pip install is a fast cache-restore rather than a fresh PyPI fetch on every run; it can't be baked into the dc-workspace image instead, since the compose provider has to run on the CI runner to drive the runner's own podman — an image is a thing podman manages, not the environment a step executes in. Also bumps actions/checkout v4 -> v5 and codecov/codecov-action v3 -> v5 across the workflow (upload-artifact stays v4, already latest). Verified locally: podman compose up/down against compose.test.yaml brings both stores up under their fixed names and tears them down cleanly. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0155z4WEezE9gofR1zkHbMxK Signed-off-by: David Bensoussan <d.bensoussan@proton.me>
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0155z4WEezE9gofR1zkHbMxK Signed-off-by: David Bensoussan <d.bensoussan@proton.me>
…ainers/
docker/{ci,ci-testing,source,source-sim}/Dockerfile, root docker-compose.yaml, and
.github/workflows/docker.yaml were humble-line legacy already documented as dead
in CLAUDE.md ("no reason to keep an unreachable Docker/industrial_ci workflow
around on a branch that can't build fluent_bit_plugins/dc_destinations") but never
actually pruned from this branch's tree: docker.yaml's own workflow only triggers
on push to humble and every one of these Dockerfiles targets ROS_DISTRO=humble
against packages this branch COLCON_IGNOREs per ADR-0001/#242. Confirmed no active
plan to port them before deleting. They still exist on humble's own tree — a
separate branch — untouched by this.
docker/doc/Dockerfile (mdbook docs-site builder) is renamed to
containers/doc/Containerfile, matching the Podman/OCI filename convention (CLAUDE.md
"Containers: Podman, not Docker"). It is *not* currently live: it turned out to be
one job (`doc`) in the very same docker.yaml pipeline, building the image
.github/workflows/doc.yaml and tools/ci/pre-commit/build_doc.sh pull — removing
docker.yaml's build/push step leaves it orphaned rather than working. Wiring a real
jazzy docs build is tracked at #252 (DC 2.0 S11: migration guide + docs overhaul),
not attempted here; all three files get a comment pointing there so this doesn't
read as accidentally-live tooling or get silently deleted by a future cleanup
before #252 lands.
Updated the now-dangling docker/ci/Dockerfile references in tools/e2e/README.md and
tools/e2e/scripts/build.sh's .dockerignore comments.
CLAUDE.md: also drops a stale "ADR-0007 reverted the ADR-0004 Rust pilot" aside from
the intro paragraph (the C++ Bridge stands on its own now — see ADR-0007 for the
decision history) and clarifies the podman-compose-vs-native-podman convention
(compose for stores with no lifecycle control needed; native podman run/stop/restart
when the tooling itself needs to control container lifecycle, as the E2E harness
does for its induced outage).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0155z4WEezE9gofR1zkHbMxK
Signed-off-by: David Bensoussan <d.bensoussan@proton.me>
dc_bridge has been C++ since ADR-0007; comments and descriptions across the
package (headers, source files, tests, package.xml, README), dc_bringup's launch
file, ci.yaml's intro comment, and tools/e2e/Containerfile still referred to the
reverted Rust pilot ("Port of the Rust ...", "mirroring the Rust ... variants",
"dc_bridge (Rust)", rclrs/cargo/colcon-cargo/ros2_rust build-friction notes) —
noise at best, and in dc_bringup.launch.py's case actively wrong (still labeling
the C++ dc_bridge node "(Rust)" and citing "rclrs has no rclcpp_components
equivalent" as the reason it runs outside composition; replaced with the real,
current reason — dc_bridge isn't registered as an rclcpp_components plugin).
The architecture-decision history (why C++ was reverted from Rust) belongs in the
ADRs (docs/adr/0004, 0007), which already record it and are left untouched, along
with progress.txt (an append-only historical log — scrubbing "Rust" from entries
describing the Rust-to-C++ reversion would make the log describe something that
didn't happen) and the two doc/ mentions that are about unrelated things (cargo to
install the mdbook doc-site tool; a hypothetical answer about future plugin
languages in the FAQ).
Comment-only / doc-only changes; verified dc_bridge still builds clean and its 75
gtests still pass, and dc_bringup.launch.py still parses.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0155z4WEezE9gofR1zkHbMxK
Signed-off-by: David Bensoussan <d.bensoussan@proton.me>
:latest is a floating tag — an upstream push could silently change what CI and the harness run against, with no diff to review. Pinned both references (compose.test.yaml's stable test store, run.sh's native-podman harness store) to the digest :latest currently resolves to (1.0.0-beta.11, confirmed via Docker Hub's tags API and a verified podman pull), with a comment noting the version and where to look up a new digest when bumping deliberately. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0155z4WEezE9gofR1zkHbMxK Signed-off-by: David Bensoussan <d.bensoussan@proton.me>
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Closes #249
Summary
Two intertwined deliverables:
docker-compose-style harness running the reference workload through an induced
outage + full restart, asserting exactly-once delivery and <10 s startup) plus a CI
matrix that builds and tests every package on Jazzy with coverage.
this work: the
rclrs/ros2_rust pilot can't deliver plug-and-play on Jazzy today, andthe CI/harness depend on the Bridge, so the two ship together.
Everything is Podman-based, not Docker — this branch moves DC off Docker (see
CLAUDE.md→ "Containers: Podman, not Docker").Zero-loss harness + CI (
tools/e2e/,.github/workflows/ci.yaml)podman composeharness: Vector + PostgreSQL + RustFS running 20 Measurements @ 1 Hz(6 real hardware-free plugins + 14
StringStampedfed by a synthetic counter node) +a camera File pipeline. Hard-failing verification (
verify_zero_loss.py): per-topiccounter gap/dup detection (no loss, no double-delivery), per-Tag presence, and File
status-row consistency — nothing skips on missing stores.
outage + a full stack restart (named volumes so the disk buffer + Postgres data
survive the restart). CPU/RSS sampled (informational).
tools/e2e/Containerfile) built byscripts/build.shandused by both the harness (
Containerfile.e2eFROMit) and CI (colcon testviascripts/test.sh); registry-backed--cache-from/--cache-to(verified working againsta real registry).
ci.yamlreplaces the humbleindustrial_ci/Docker workflow on thisbranch.
Bridge: Rust → C++ (ADR-0007)
dc_bridgeis now plainament_cmakeC++ (rclcpp). Faithful port of every module asclean classes:
Forwarder(msgpack-cxx),Supervisor(fork/exec/PDEATHSIG),Readiness,TopicConfig, the 1,500-line ADR-0003 config renderer (toml++), and thefull Uploader (ADR-0005) with resumable multipart — the latter built on an abstract
ObjectStoreinterface so it's unit-tested against an in-memory fake with no clouddependency (the same split the Rust design had with
object_store'sInMemory).aws_sdk_vendorpackage builds aws-cpp-sdk-core+s3 from source; verified workingagainst RustFS (PutObject + real multipart) before adoption.
colcon-cargo,rosidl_rust,source-built message repos (
ros2_data_collection_jazzy.reposdeleted), orCOLCON_IGNORE/--skip-keysworkarounds. A user now runsrosdep install && colcon buildlike anydc_*package (the two header-only libs with no upstream rosdep keyresolve via a small repo-local
rosdep/dc.yaml).Verification
In a real ROS 2 Jazzy container:
colcon build --packages-up-to dc_bridgesucceeds(aws_sdk_vendor built + linked) and all 75 gtests pass — Forwarder/Supervisor/render
plus the 11 Uploader cases (happy path, verify-retry, delete-after-verified-everywhere,
no-dup-rows, missing-file, partial-vs-complete group, video duration, ffprobe parse,
interrupted-multipart-resume, …). The renderer's output matches the old Rust gold-file
fixtures byte-for-byte.
Follow-ups (filed / noted)
dc_simulation/dc_demosoff Gazebo Classic to gz-sim (they'reCOLCON_IGNOREd; unrelated to the language change).a prebuilt aws-sdk-cpp to avoid the ~20-min source build; GCS/Azure
ObjectStoreimpls (S3 only today, matching the Rust).
🤖 Generated with Claude Code
https://claude.ai/code/session_0155z4WEezE9gofR1zkHbMxK