refactor: migrate build system to tsdown and dist output directory

[agoldis]

Summary

• Replaces the previous tsc + write-cjs-package-json.mjs build pipeline with tsdown, outputting to dist/ instead of build/
• Updates all entry points, scripts, Dockerfile, CI workflows, and documentation to reference the new dist/ paths
• Adds server version and logo metadata to the MCP server configuration
• Allows releases from release/* branches in addition to main
• Bumps to v2.3.0

Changes breakdown

Build tooling

• Introduced tsdown.config.ts as the new bundler config producing dist/api.mjs, dist/api.cjs, and dist/index.mjs
• Removed tsconfig.cjs.json and scripts/write-cjs-package-json.mjs (no longer needed)
• Replaced rimraf dev dependency with tsdown

Package configuration (package.json)

• Updated bin, main, module, types, exports to point at dist/
• Updated build, clean, prepublishOnly scripts to use tsdown
• Removed audit production dependency

Dockerfile

• Build stage now copies tsdown.config.ts + assets/ instead of old scripts
• Runtime stage copies dist/ and assets/; entry point changed to dist/index.mjs
• Build stage upgraded to node:24-alpine

Server (src/server.ts)

• Reads version from package.json at build time
• Embeds base64-encoded logo from assets/logo.png
• Passes serverInfo with version and logo to the MCP server constructor

Tests & fixtures

• Integration tests updated to reference dist/ paths
• Consumer fixtures (consumer-cjs.cjs, consumer-cjs-dynamic-import.cjs, consumer-esm.mjs) updated import paths

CI & docs

• dependabot-review.yml updated boot-check path
• CONTRIBUTE.md updated local testing instructions
• .release-it.json now allows release/* branches

Review hints

• Start with tsdown.config.ts and package.json to understand the new build shape
• Verify exports map covers all consumption patterns (ESM, CJS require, CJS dynamic import)
• Check Dockerfile layer order makes sense for caching
• The server.ts changes are mostly additive (version + logo injection)

Made with Cursor

Summary by CodeRabbit

• Chores
  • Migrated build output and package entrypoints from build/ to dist/, updated runtime entrypoint and Docker runtime image.
  • Switched build tooling to tsdown and adjusted packaging/publish scripts.
• Documentation
  • Updated developer and contribution docs, config examples, and test fixtures to reference the new distribution layout.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 74cf26d3-5db8-48f3-b1be-312921a973fd

📥 Commits

Reviewing files that changed from the base of the PR and between 0962df8 and 5b4a31c.

📒 Files selected for processing (1)

• mcp-server/vitest.config.ts

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📝 Walkthrough

Walkthrough

The PR migrates the MCP server build system from separate TypeScript configurations outputting to build/ to a unified tsdown configuration outputting to dist/. All runtime references, test fixtures, CI workflows, and documentation are updated to use the new artifact paths. The MCP server implementation gains build-provided metadata injection for logos and versioning.

Changes

Build System Migration to tsdown with dist Output

Layer / File(s)	Summary
Build configuration and entrypoint setup mcp-server/tsdown.config.ts, mcp-server/package.json	New tsdown configuration replaces tsconfig.cjs.json and consolidates ESM/CJS output to dist/ with base64-encoded logo and version injected as compile-time constants. package.json bin, main, module, types, and exports paths are updated to reference dist/ artifacts; build/start/cleanup scripts and dev deps updated accordingly.
Artifact path updates in Docker and test configuration Dockerfile, mcp-server/.gitignore, mcp-server/vitest.config.ts, .github/workflows/dependabot-review.yml	Dockerfile build stage upgrades to node:24-alpine, copies tsdown.config.ts and assets, and runtime stage copies /app/dist and starts dist/index.mjs. .gitignore now ignores dist/. Vitest config removes build from test and coverage exclusions. Dependabot-check workflow runs node dist/index.mjs --help in its execution check.
Documentation and local dev examples CONTRIBUTE.md, mcp-server/scripts/sync-readme-tools.mjs	Local development instructions and inline tooling comments updated to reference ./mcp-server/dist/index.mjs and the new built output location.
Test fixtures and integration test paths mcp-server/src/cli-bin.integration.test.ts, mcp-server/src/package-environments.integration.test.ts, mcp-server/src/package-published-esm.integration.test.ts, mcp-server/test/fixtures/consumer-*.{mjs,cjs}	Integration test prerequisites, fixture imports, and documentation updated to check for and import from dist/api.mjs (ESM) and dist/api.cjs (CJS) instead of build/ artifacts.
MCP server metadata and tool registration mcp-server/src/server.ts	Tool import statements reorganized; server.registerTool(...) calls standardized to pass *.handler. Server initialization reads injected __LOGO_BASE64__ and __VERSION__ to populate icons (PNG data URI) and version in the McpServer options.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• currents-dev/currents-mcp#134: Touches README tooling and server.registerTool(...) validation related to this PR's server and path changes.
• currents-dev/currents-mcp#133: Adds tests for server.registerTool(...) that may be impacted by the registration formatting changes here.
• currents-dev/currents-mcp#112: Previously modified packaging/runtime entrypoints and relates to package.json/build artifact conventions changed in this PR.

Suggested reviewers

• miguelangaranocurrents

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: migrating the build system from tsc to tsdown and changing the output directory from build/ to dist/.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/improve-build

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@mcp-server/src/server.ts`:
- Around line 47-62: The file dereferences build-injected globals
__LOGO_BASE64__ and __VERSION__ directly (used to set logoBase64 and version for
the McpServer) which throws ReferenceError in test environments; guard these by
checking typeof __LOGO_BASE64__ and typeof __VERSION__ and provide safe
fallbacks (e.g. empty string or a default version) before constructing the
McpServer options so tests can import src/server.ts without CI failures.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 9096d716-96c3-484b-bd65-dfd4a82e5b1d

📥 Commits

Reviewing files that changed from the base of the PR and between b1be9de and 0962df8.

⛔ Files ignored due to path filters (2)

• mcp-server/assets/logo.png is excluded by !**/*.png
• mcp-server/package-lock.json is excluded by !**/package-lock.json

📒 Files selected for processing (17)

• .github/workflows/dependabot-review.yml
• CONTRIBUTE.md
• Dockerfile
• mcp-server/.gitignore
• mcp-server/package.json
• mcp-server/scripts/sync-readme-tools.mjs
• mcp-server/scripts/write-cjs-package-json.mjs
• mcp-server/src/cli-bin.integration.test.ts
• mcp-server/src/package-environments.integration.test.ts
• mcp-server/src/package-published-esm.integration.test.ts
• mcp-server/src/server.ts
• mcp-server/test/fixtures/consumer-cjs-dynamic-import.cjs
• mcp-server/test/fixtures/consumer-cjs.cjs
• mcp-server/test/fixtures/consumer-esm.mjs
• mcp-server/tsconfig.cjs.json
• mcp-server/tsdown.config.ts
• mcp-server/vitest.config.ts

💤 Files with no reviewable changes (2)

• mcp-server/scripts/write-cjs-package-json.mjs
• mcp-server/tsconfig.cjs.json