Files
filip131311 5d76ed4d66 feat: tag artifacts with a semantic kind at registration (#564)
Fresh, from-current-main take on the artifact-kind idea from #398 /
#466. Knowing what an artifact *represents* (not just its MIME type) is
what a UI needs to group and name artifacts (e.g. in EAS); this PR
delivers exactly that — the tagged handle — without the
declared-output-map machinery.

## Summary

- Adds a closed `ArtifactKind` union to the artifact wire contract;
`kind` is carried on `ArtifactHandle`, `ArtifactEntry`, and the
`/artifacts` inventory items.
- `ArtifactStore.register` now takes a single `{ hostPath, kind, ... }`
options object, so the compiler forces every producer — current and
future — to declare what it is emitting.
- Tags **all** producers on main today, including the ones #398/#466
predate: screenshot (all four capture paths), screenshot-diff, **flow
snapshot baselines/diffs** (`screenshot` / `screenshot-diff-context`),
**screen recordings** (new `screen-recording` kind), and the
native/React profiler exports and reports.
- Types the native-profiler export keys at their source (`IosExportKey`
from the `EXPORTS` table, `AndroidExportKey`) and maps them through a
kind table that is **total over both unions** — a newly added export key
fails to compile until classified, replacing the previous stringly-keyed
loop (and the `?? "native-profile-trace"` silent-default this design
would otherwise need).
- Client-side (`@argent/tools-client`), the mirrored handle type keeps
`kind` **optional and widened** (`ArtifactKind | (string & {})`): an
older, already-running tool-server sends no kind, and a newer server may
send kinds this client build predates. Consumers treat it as advisory
metadata; unknown kinds are opaque, never an error.

## Differences from #398 / #466 (deliberate)

- No `@argent/artifacts` package, no third `ToolDefinition` generic, no
per-tool output-name registrar, no runtime throw for “undeclared output”
— the kind is plain data at the registration call site, checked at
compile time where it can be, and a wrong label can never fail a tool at
runtime. If a pre-invocation `artifacts` declaration in tool-listing
metadata is ever needed (an actual EAS consumer), it can be layered on
later without changing this wire contract.
- The two `ArtifactKind` definitions (registry / tools-client) stay
deliberately separate — same as the existing `ARTIFACT_MARKER`
must-match convention — because the client-side type is intentionally
*looser* (optional + open) than the server-side one for version skew.
- Extending the union stays backward-compatible on the wire.

## 2026-08-24 update

Merged current main (0.22.0) into the branch. The flow-visual rewrite
that landed since (cropOn crops, per-app snapshot-key dedupe, diff
scratch-dir hygiene) is preserved verbatim; its five registration sites
now carry kinds (`screenshot` for baseline/current,
`screenshot-diff-context` for the annotated diff — the cropped `current`
included). No producer added since the PR was opened needed a new kind:
`paste`, `shake`, and the other new tools emit no file artifacts, and
every register call site in the tree now goes through the typed options
object.

No docs update is needed: the docs site (added since this PR) does not
document the artifact handle wire contract; `kind` is advisory wire
metadata with no user-facing surface.

## Validation

At the merge with main (0.22.0), 2026-08-24:

- `npm run build` (full `tsc --build`) — clean
- `npm run typecheck:tests` in registry, tools-client, tool-server, mcp,
cli — clean
- Full suites green: registry 90, tools-client 191, tool-server 4495 (+1
skipped), mcp 80, cli 472
- `prettier --check .`, `eslint . --max-warnings 0`, and the knip gate —
all pass

🤖 Generated with [Claude Code](https://claude.com/claude-code)
2026-08-24 12:09:51 +02:00
..