synthesis-pr-42: feat(build): migrate to tsup for ESM build

[jbdevprimary]

🔬 Synthesis: PR #42

PR: #42
Author: @jbdevprimary
Branch: feat/tsup-esm-build

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📊 Queue State

Metric	Value
Reviews	2
Active Threads	1
Critical	0
Resolved	0
Updated	2025-12-31T07:50:28Z

🎯 Verdict: 🟡 REVIEW

📝 Feedback Queue

• gemini-code-assist on packages/agentic-control/package.json:62

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Commands: @cascade address · @cascade synthesize · @cascade merge

_{🤖 Ecosystem Triage}