Remove dead code scripts

Deleted 9 unused scripts:
- add-missing-exports.mjs - superseded by generate-package-exports.mjs
- clean-dist.mjs - superseded by clean.mjs
- fix.mjs - replaced by direct commands
- analyze-bundle.mjs - development tool never integrated
- cherry-pick-entries.mjs - abandoned strategy
- optimization-config.mjs - abandoned strategy
- non-barrel-imports.mjs - abandoned strategy
- esbuild-optimize-plugin.mjs - orphaned utility
- fix-default-imports.mjs - orphaned utility

These scripts were never referenced in package.json.

Author: jdalton