feat(mcp): fix data loader, add value query, optimize context efficiency

[GarthDB]

Summary

• feat(tokens): Add getTokensByFile export for MCP data loader.
• feat(mcp): Fix data loader (use @adobe/spectrum-tokens), add query-tokens-by-value, consolidate 14→8 tools, add limit to value query, strip null/empty fields, compact JSON, shorten descriptions, drop query echo. Updates tests and README.

Tool set (8 tools)

• Token: query-tokens, query-tokens-by-value, get-token-details, get-component-tokens
• Schema: list-components, get-component-schema, validate-component-props, search-components-by-feature

Impact

• Tool list token usage reduced (~43% savings)
• Response sizes reduced (strip nulls, compact JSON, limit on value query)
• README: 8 tools documented, npx uses -y

Made with Cursor

[changeset-bot]

🦋 Changeset detected

Latest commit: 03d2714

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 5 packages

Name	Type
@adobe/spectrum-tokens	Minor
@adobe/spectrum-design-data-mcp	Minor
s2-tokens-viewer	Patch
markdown-generator	Patch
token-csv-generator	Patch

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Click here if you're a maintainer who wants to add another changeset to this PR

[GarthDB]

Run report for 03d27140

Total time: 45.9s | Comparison time: 47.6s | Estimated savings: 1.7s (3.5% faster)

	Action	Time	Status	Info
⬛️	SetupProto(0.51.4)	0.1ms	Skipped
🟩	SyncWorkspace	9.7ms	Passed
🟩	SyncProject(componentSchemas)	714.9ms	Passed
🟩	SyncProject(tokens)	714.8ms	Passed
🟩	SyncProject(markdown-generator)	0.4ms	Passed
🟩	SyncProject(spectrum-design-data-mcp)	0.5ms	Passed
🟩	SyncProject(viewer)	0.7ms	Passed
🟩	SyncProject(site)	0.5ms	Passed
⬛️	SetupToolchain(node:20.17.0)	1.3s	Skipped
🟩	InstallWorkspaceDeps(node:20.17.0)	8.6s	Passed
🟩	RunTask(tokens:buildManifest)	273.1ms	Passed
🟩	RunTask(site:generateToolsPage)	928.1ms	Passed
🟩	RunTask(design-system-registry:test)	1.8s	Passed
🟩	RunTask(spectrum-design-data-mcp:test)	2.5s	Passed
🟩	RunTask(componentSchemas:test)	2.8s	Passed
🟩	RunTask(tokens:buildTokens)	33.1s	Passed
🟩	RunTask(tokens:build)	12.4ms	Passed
🟩	RunTask(viewer:prepare)	135.2ms	Passed
🟩	RunTask(viewer:export)	49.6ms	Passed
🟩	RunTask(markdown-generator:generate)	306.6ms	Passed
	And 3 more...

Expanded report

	Action	Time	Status	Info
🟩	RunTask(site:copyContent)	78.4ms	Passed
🟩	RunTask(site:build)	2.5s	Passed
🟩	RunTask(site:export)	7.6ms	Passed

Touched files

.changeset/add-get-tokens-by-file.md
.changeset/mcp-token-value-query.md
packages/tokens/index.js
tools/spectrum-design-data-mcp/README.md
tools/spectrum-design-data-mcp/src/data/tokens.js
tools/spectrum-design-data-mcp/src/index.js
tools/spectrum-design-data-mcp/src/tools/schemas.js
tools/spectrum-design-data-mcp/src/tools/tokens.js
tools/spectrum-design-data-mcp/test/tools/schemas.test.js
tools/spectrum-design-data-mcp/test/tools/tokens.test.js