feat(core): add action binder for source and perspective

[cngonzalez]

FIXES SDK-743

Description

This PR is prep for #723, so the changes here aren't actually used anywhere.

It exists because stores like the projection store need to be separated out by perspective. This is because:

1. The projection store bulk-queries. It can't bulk query against multiple perspectives
2. If a user switches perspective, the projection store finds a value already in its store and considers it valid, rather than re-fetching, as it should.

I also had to move isReleasePerspective to its own utility file because of import dependency cycles which someone definitely warned me about in a previous PR.

What to review

Hopefully this is pretty straightforward, nothing in particular I'm super worried about.

Testing

Tests were added for the new utilities.

[vercel]

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Project	Deployment	Actions	Updated (UTC)
sdk-docs	Ready	Preview, Comment	Feb 3, 2026 6:44pm
sdk-kitchensink-react	Ready	Preview, Comment	Feb 3, 2026 6:44pm

[cngonzalez]

• feat(preview): update preview to use perspective and source #731
• feat(document): update document store to accept sources #730
• test(e2e): create e2e tests for recent source changes #728
• feat(projection): update projection store to use source and perspective #723
• feat(core): add action binder for source and perspective #724 👈 (View in Graphite)
• fix(query): use store key to determine client for live events #721 : 1 other dependent PR (#722 )
• fix: prevent sourceName from reaching sdk core #720
• refactor(core): use query store for releases #629
• main

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[cngonzalez]

The naming is only here to ensure uniqueness among stores -- resources will read perspective from the key rather than this string.

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🟢	Lines	95.28% (🎯 95%)	7773 / 8158
🟢	Statements	95.28% (🎯 95%)	7773 / 8158
🟢	Functions	96.24% (🎯 95%)	384 / 399
🟢	Branches	92.95% (🎯 90%)	2308 / 2483

File Coverage

File	Stmts	Branches	Functions	Lines	Uncovered Lines
Changed Files
packages/core/src/query/queryStore.ts	96.61%	95.65%	100%	96.61%	183-185, 240-245
packages/core/src/releases/getPerspectiveState.ts	100%	100%	100%	100%
packages/core/src/releases/utils/isReleasePerspective.ts	100%	100%	100%	100%
packages/core/src/store/createActionBinder.ts	97.95%	97.5%	100%	97.95%	252-253

Generated in workflow #2855 for commit a5da929 by the Vitest Coverage Report Action