chore: add changeset for typescript and template integration fixes

Author: sapientpants

.changeset/fast-eggs-fall.md

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+---
+'deepsource-mcp-server': patch
+---
+
+Fixed TypeScript strict mode compatibility and integrated agentic-node-ts-starter template
+
+- Resolved hundreds of `exactOptionalPropertyTypes` errors across the codebase
+- Migrated test suite from Jest to Vitest
+- Enhanced CI/CD workflows with security scanning and validation
+- Added comprehensive linting tools (actionlint, markdownlint, yamllint)
+- Improved development tooling and scripts
+- Fixed all precommit check failures