31  Recursive Decomposition Stack

32 Recursive Decomposition Stack

Working seal: stack://recursive-decomposition-stack/9E9D03E9C0

Enter: Use when the task is too large for one spell or one session and scope can shrink recursively.

32.1 Related Runes

• 0012 boundary - The line that says where one responsibility ends and another begins.
• 0055 interface {Arch} - A disciplined seam that lets unlike bodies cooperate without swapping internal organs.
• 1172 invariant - A law that must remain true while the rest of the system is allowed to move. If you cannot say the invariant, you probably do not yet understand the change.
• 1437 composable - Small parts combine without excessive friction.
• 1445 deterministic - Given the same inputs, the same result should return. This is the antidote to drift, heisenbugs, and unreviewable behavior.

32.2 Related Spell Templates and References

• Api Design
• Safe Refactoring
• Test Generation
• Stack Grammar
• Failure Modes
• Canon Map | Step | Spell | Artifact | Advance when | | —- | ——————- | —————————- | ——————————————– | | 1 | Define contract | Parent contract | Boundary and obligations are clear | | 2 | Split into children | Smaller scopes | Every child is smaller than parent scope | | 3 | Call child stack | Solved child scope | Child base case or child verification passes | | 4 | Integrate | Integrated parent scope | Children compose under parent contract | | 5 | System verify | Parent verification evidence | Children are green and parent contract holds |

32.3 Loop or Recursion

{
  "recursive": true,
  "base_case": "Scope is small enough to understand, implement, and verify in one bounded pass"
}

32.4 On Fail

Stop descent if child scopes do not shrink or contract consistency is lost.

32.5 Why It Works

It lets one choreography operate at several scales while preserving contracts at every boundary.