legacy modernization – <dev>Ronaldo</dev>

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unfamiliar repository
         │
         ▼
┌────────┴────────┐
│ run  trace  map │
└──┬─────┬─────┬─┘
   ▼     ▼     ▼
 facts  gaps  risks
          │
  first safe change

codebase discovery · legacy modernization 2026 · 08 · 02 11 min read

The First Week in an Unfamiliar Codebase: A Practical Discovery Playbook

A useful first week in an existing codebase produces more than notes. It creates a reproducible baseline, a traced workflow, an evidence-backed system map, and a safe first change.

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Tag: legacy modernization