## Summary
This improves how agents discover, author, inspect, and verify Webstudio
projects while reducing unnecessary MCP context usage.
## What changed
- Adds an **Agents** section to Project Settings with ready-to-run setup
commands and client configuration for Claude Code, Codex, Cursor, and VS
Code.
- Makes large list and schema responses compact and paginated by
default, with **verbose** available when complete records or diagnostics
are needed.
- Applies consistent compact output to assets, instances, styles, design
tokens, CLI schemas, and project-session metadata.
- Returns actionable expression warnings for props, resources, and
Collection bindings, including unknown variables and risky render-time
mutation resources.
- Improves Collection expression guidance so agents can bind array items
with the correct scoped variables.
- Reports rendered audit outcomes explicitly as complete, partial,
confirmation-required, or failed.
- Expands runtime output schemas so MCP clients can validate responses
reliably.
- Strengthens the packaged CLI smoke workflow with a realistic
seven-page stdio MCP scenario.
## Architecture
- Consolidates `project-build` from 65 file-oriented entrypoints to 11
architecture-owned surfaces.
- Separates the core model, contracts, runtime authoring, transfer,
state, project sessions, MCP, visual tooling, persistence codecs, and
authenticated server services.
- Isolates Node-only JSX evaluation from browser-safe transfer utilities
and authenticated server modules.
- Keeps persistence codecs independent from authenticated database
services, preventing unrelated module initialization.
- Defines shared instance-path types once and reuses them across runtime
modules.
- Preserves Immer initialization through explicit package side-effect
metadata.
- Adds package tests that prevent a return to source-file entrypoints or
generic exposure of Node-only surfaces.
## Validation
- Full repository checks, tests, typechecks, generated-file checks, and
fixtures
- All 163 Builder test files and 2,141 tests
- All 71 project-build test files and 1,794 tests
- Lint and package-boundary validation
- Full packed CLI release smoke test, including install, preview, agent
setup, seven-page stdio MCP workflow, rendered audit, and structured
commands
Preserve var() references in pasted gradient shorthand
(css-data/parse-css.ts)
When expanding shorthand properties (e.g. background), unresolved var()
tokens were lost. Now they're recovered by probing each longhand with a
placeholder, mapping which longhands the var belongs to, and restoring
it.
Fix border-(--x) Tailwind v4 syntax not recognized (tailwind.ts)
borde
Shorthand properties like background: var(--color) were silently dropped
when pasting into the CSS editor because the shorthand expander can't
handle unresolved var() references.
Fix: CSS vars from the current element's computed styles are now
resolved before expanding shorthands. Inline and nested fallbacks
(var(--a, var(--b))) are supported. If a var still can't be resolved, a
toast error is shown instead of silently dropping the property.
## Description
1. What is this PR about (link the issue and add a short description)
## Steps for reproduction
1. click button
2. expect xyz
## Code Review
- [ ] hi @kof, I need you to do
- conceptual review (architecture, feature-correctness)
- detailed review (read every line)
- test it on preview
## Before requesting a review
- [ ] made a self-review
- [ ] added inline comments where things may be not obvious (the "why",
not "what")
## Before merging
- [ ] tested locally and on preview environment (preview dev login:
0000)
- [ ] updated [test
cases](https://github.com/webstudio-is/webstudio/blob/main/apps/builder/docs/test-cases.md)
document
- [ ] added tests
- [ ] if any new env variables are added, added them to `.env` file
## Description
1. What is this PR about (link the issue and add a short description)
## Steps for reproduction
1. click button
2. expect xyz
## Code Review
- [ ] hi @kof, I need you to do
- conceptual review (architecture, feature-correctness)
- detailed review (read every line)
- test it on preview
## Before requesting a review
- [ ] made a self-review
- [ ] added inline comments where things may be not obvious (the "why",
not "what")
## Before merging
- [ ] tested locally and on preview environment (preview dev login:
0000)
- [ ] updated [test
cases](https://github.com/webstudio-is/webstudio/blob/main/apps/builder/docs/test-cases.md)
document
- [ ] added tests
- [ ] if any new env variables are added, added them to `.env` file
Ref https://github.com/webstudio-is/webstudio/issues/2651
When convert tailwind breakpoints to webstudio breakpoints our algorithm
can find holes and will stop conversion. Though this will create
mobile-first breakpoints which users do not expect.
Here I added workaround to specify "unset" value on property when
tailwind breakpoints has holes. Here's examples
**sm:opacity-20** - here the hole is in the beginning, opacity: 0.2 can
be defined on base breakpoint but we need to fill with something
`max-width: 479`
**max-sm:opacity-10 md:opacity-20** - here the holr is in the middle, we
have `max-width: 479` and base breakpoint but no `max-width: 767`
Ref https://github.com/webstudio-is/webstudio/issues/2651
There is an edge case which will prevent from converting breakpoints.
When there is no base breakpoint there is no value to fill with inverted
space. Though it should be very rare usecase. Need to test how often it
will create new breakpoints.
Oleg Isonen