Closes #5924 Closes #5925 Closes #5926 Closes #5927 Closes #5928 Closes #5929 ## Outcome Makes MCP and CLI authoring predictable across project-wide CSS variables, font uploads, retried asset uploads, destructive asset selection, design-token collisions, and SVG HtmlEmbed edits. ## Delivered ### Project-global CSS variables - [x] `define-css-variable` writes to `ROOT_INSTANCE_ID` / `:root` instead of the home-page Body. - [x] Breakpoint and overwrite behavior is preserved, and compact results identify the root scope. - [x] Existing body-local declarations remain untouched. - [x] Runtime and Builder integration tests cover root selection and generated project behavior. ### Font metadata and upload overrides - [x] Static fonts prefer authoritative `OS/2.usWeightClass`. - [x] Fallback matching normalizes spaces, hyphens, and underscores and checks specific aliases before shorter ones. - [x] Explicit format and partial metadata overrides travel through HTTP, filesystem, and S3 upload paths and are validated after merging with detected metadata. - [x] Regression tests cover ExtraBold, Extra-Bold, Semi Bold Italic, Ultra Light, valid weight classes, invalid weight classes, partial overrides, and invalid overrides. ### Idempotent asset uploads - [x] API uploads compute a project-scoped SHA-256 content hash. - [x] Sequential and concurrent duplicate uploads reuse the existing asset and return `deduplicated: true`. - [x] `force: true` bypasses deduplication for intentional duplicates. - [x] A partial unique index enforces one non-null content hash per uploader project. - [x] Stale reservations are cleaned up and active concurrent uploads are bounded by polling and an actionable retry error. - [x] HTTP, protocol, uploader, and CLI tests cover hash reuse, uniqueness races, force propagation, and result markers. The migration does not backfill historical files. Existing assets begin participating in deduplication when uploaded through the new path; matching content keeps the existing asset's metadata rather than silently rewriting it. ### Consistent asset inputs and permissions output - [x] `delete-asset` exposes exact `assetIds` and explicit `assetIdPrefixes`. - [x] The legacy `assetIdsOrPrefixes` input remains accepted and is marked deprecated. - [x] Exact ids no longer accidentally select longer prefixed ids. - [x] `webstudio permissions` prints a readable role/capability summary by default while `--json` remains unchanged for machine callers. - [x] Help and discovery describe JSON output as optional. - [x] Runtime, CLI, metadata, and generated-contract tests cover canonical and compatibility behavior. ### Deterministic fragment design tokens - [x] Fragment insertion reconciles incoming tokens against project tokens and earlier tokens in the same fragment. - [x] Equal name/style tokens are reused instead of creating suffixed twins. - [x] Same-name/different-style fragments require an explicit `ours`, `theirs`, or `merge` policy at the public runtime boundary. - [x] Builder's established internal paste behavior retains its explicit incoming-value default. - [x] `create-design-token` accepts documented CSS strings through the property-aware CSS parser as well as typed style values. - [x] Tests cover same-fragment reuse/conflicts, persisted tokens, explicit policies, and CSS string parsing. ### Editable SVG HtmlEmbed content - [x] HtmlEmbed validation uses parse5 parser errors and source structure instead of serialization-string equality. - [x] Valid inline SVG is accepted without silently normalizing authored markup. - [x] Fragment insertion now uses the same validator as prop update and text replacement paths. - [x] Malformed markup is rejected before mutation. - [x] Regression tests cover realistic SVG, parser failures, and no-partial-mutation behavior. ## Verification - [x] `pnpm checks`: all workspace tests, typechecks, lint, package boundaries, generated API/docs checks, and fixtures passed on the final committed tree. - [x] `pnpm --filter webstudio test:release-smoke`: packaged install, compact comparison, preview, agent workflow, stdio MCP, and structured commands passed. - [x] Prisma schema validation passed with test connection variables. - [x] Two minimally prompted weak-model subagents independently exercised the changed CLI/MCP discovery and focused workflows. - [x] The subagent-found stale `permissions --help` requirement was fixed, regression-tested, and retested. - [x] Final diff and worktree are clean.
Protocol
@webstudio-is/protocol owns Webstudio data exchange protocols.
The project bundle is the external export/import artifact used by sync, local
.webstudio/data.json, project import, transferred asset files, and prebuild.
This package owns the assembled bundle schemas, transfer RPC payloads, and
bundle compatibility/version helpers.
Domain models such as pages, assets, and serialized builds remain owned by their domain packages and are composed here through schema-only entrypoints. Do not copy those schemas into this package.
Terminology
Project bundle is the authoritative external project artifact. It is used by
sync, .webstudio/data.json, project import, transferred asset files, and
prebuild.
Data envelope is a serialized single-key object whose key is a versioned
Webstudio marker, for example { "@webstudio/instance/v0.1": data }. The
envelope identifies the payload version and lets consumers detect malformed
Webstudio-owned data before falling back to other formats.
Transfer data is the domain payload inside a data envelope. Examples include
InstanceTransferData, InstancesTransferData, and PageTransferData.
Transfer data is portable and detached from a project; insertion/import remaps
ids and merges it into authoritative project state. Runtime-owned transfer
formats live in @webstudio-is/project-build/transfer.
Clipboard data is a UI transport concern. Builder copy/paste may serialize transfer data into a data envelope and place it on the browser clipboard, but runtime and protocol code should name the reusable format as data envelope or transfer data, not clipboard.