fix(mcp): emit Node-resolvable ESM imports

[Aymericr]

The published @pascal-app/mcp@1.0.0 exits under Node before transport setup because both MCP and its @pascal-app/core peer emit extensionless relative ESM imports. For example, Node cannot resolve dist/bridge/node-shims from the CLI entrypoint.

This adds a shared post-build rewrite for emitted JavaScript in core and MCP, then gates the MCP workflow and both packages' publish hooks with real Node imports. It fixes the runtime half of #704; the cloud-to-local capture handoff remains tracked by #737.

Validation:

• @pascal-app/core build + Node import smoke
• @pascal-app/mcp build + Node CLI/subpath import smoke
• MCP suite: 366 passed
• packed core and MCP tarballs installed into an isolated consumer and loaded under Node 26
• Biome and git diff --check

---

Note

Medium Risk
Build-time rewriting of all published ESM output affects every consumer import path; mitigated by Node smoke tests in CI and publish hooks.

Overview
Fixes Node ESM resolution for published @pascal-app/core and @pascal-app/mcp by rewriting extensionless relative imports in emitted dist .js and .d.ts after tsc.

Adds scripts/fix-node-esm-imports.ts, wired into both packages’ build (MCP also rewrites sibling ../core/dist). smoke:node checks (node import of core entry; pascal-mcp --help for MCP) run in prepublishOnly and in mcp-ci after the MCP build. CHANGELOG notes that pascal-mcp and subpath exports no longer depend on Bun’s extensionless import behavior.

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[pascal]

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[cursor]

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