feat(ai-proxy): add kolar tools

[nbouliol]

Fixes PRD-245

Definition of Done

General

• Write an explicit title for the Pull Request, following Conventional Commits specification
• Test manually the implemented changes
• Validate the code quality (indentation, syntax, style, simplicity, readability)

Security

• Consider the security impact of the changes made

Note

Add Kolar KYB and transaction screening tools to ai-proxy

• Adds a new Kolar integration to ForestIntegrationClient alongside the existing Zendesk integration, extending ForestIntegrationName and CustomConfig union types accordingly.
• Implements four DynamicStructuredTool factories in packages/ai-proxy/src/integrations/kolar/: kolar_create_merchant_application, kolar_get_merchant_application_result, kolar_screen_transaction, and kolar_get_screening_result.
• Each tool makes sequential HTTP calls to the Kolar API (create + trigger job, or fetch result) and returns JSON strings; errors surface with action, HTTP status, and parsed message via a shared assertResponseOk helper.
• Credential validation is handled by validateKolarConfig, which hits GET /auth/verify and throws McpConnectionError on failure.

^{Macroscope summarized 282d76f.}

[linear]

PRD-245 Custom MCP — Kolar

[qltysh]

5 new issues

Tool	Category	Rule	Count
qlty	Duplication	Found 19 lines of similar code in 2 locations (mass = 83)	5

[qltysh]

Coverage Impact

⬆️ Merging this pull request will increase total coverage on main by 0.02%.

Modified Files with Diff Coverage (7)

Rating	File	% Diff	Uncovered Line #s
	packages/ai-proxy/src/forest-integration-client.ts	100.0%
	...rc/integrations/kolar/tools/get-merchant-application-result.ts	100.0%
	...xy/src/integrations/kolar/tools/create-merchant-application.ts	100.0%
	...es/ai-proxy/src/integrations/kolar/tools/screen-transaction.ts	100.0%
	packages/ai-proxy/src/integrations/kolar/tools.ts	100.0%
	.../ai-proxy/src/integrations/kolar/tools/get-screening-result.ts	100.0%
	packages/ai-proxy/src/integrations/kolar/utils.ts	100.0%
	Total	100.0%

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• Diff Coverage: Coverage for added or modified lines of code (excludes deleted files). Learn more.

• Total Coverage: Coverage for the whole repository, calculated as the sum of all File Coverage. Learn more.

• File Coverage: Covered Lines divided by Covered Lines plus Missed Lines. (Excludes non-executable lines including blank lines and comments.)

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[christophebrun-forest]

Jest Tests : OK
Tested on my env :OK with one workflow ( kolar_screen_transaction -> kolar_get_screening_result)
Ok for me