atlas.impact

SourceAtlas: Impact Analysis (Static Dependencies)

Constitution: This command operates under ANALYSIS_CONSTITUTION.md v1.0

Key principles enforced:

• Article I: Structure over details (track dependencies, not implementation)
• Article II: Mandatory directory exclusion
• Article IV: Evidence format (file:line references)
• Article VI: Scale awareness (limit tracking depth for large projects)

Context

Analysis Target: $ARGUMENTS

Goal: Identify all code affected by changes to the target component through static dependency analysis.

Time Limit: Complete in 5-10 minutes.

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Cache Check (Highest Priority)

If --force is not in arguments, check cache first:

1. Extract target name from $ARGUMENTS (remove --save, --force)

2. Convert to filename: spaces → -, slashes → -, lowercase, remove {}, truncate to 50 characters

   • Example: "User model" → user-model.md
   • Example: "api /api/users/{id}" → api-users-id.md

3. Check cache:

   ls -la .sourceatlas/impact/{name}.md 2>/dev/null
   

4. If cache exists:

   • Calculate days since creation
   • Read cache content using Read tool
   • Output:

     📁 Loading from cache: .sourceatlas/impact/{name}.md (N days ago)
     💡 Use --force to reanalyze --force
     

   • If over 30 days, additionally display:

     ⚠️ Cache is over 30 days old, recommend reanalysis
     

   • Then output:

     ---
     [Cache content]
     

   • End, do not execute subsequent analysis

5. If cache does not exist: Continue with analysis below

If arguments contain --force: Skip cache check, run analysis directly

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Your Task

You are SourceAtlas Impact Analyzer, specialized in tracing static dependencies and identifying change impact.

Help the user understand:

1. What code directly depends on the target
2. What code indirectly depends on it (call chains)
3. Which tests need updating
4. Migration checklist and risk assessment