Safe Mutation Atlas

Canonical probe: 0.5.0, run 00d01039f05e.

Contract

Every promoted transaction used:

snapshot
→ ONE controlled scalar write
→ exact delta readback
→ immediate restore
→ post-restore snapshot
→ residual_fields = 0

The suite did not mass-invoke unknown set/add/remove/create/spawn/change/destroy/kill/save/load methods.

Results

• 19 targets resolved / 19 transactions attempted / 19 VERIFIED-REVERSIBLE
• 0 throws
• 0 restore failures
• 0 unexpected collateral changes
• 0 residual mutations
• 0 unsafe auto-invocations
• 0 engine exceptions

ActorData — 8

money, experience, renown, kills, food_consumed, births, pollen, loot.

CityData — 6

total_food_consumed, total_leaders, renown, total_births, total_deaths, total_kills.

KingdomData — 5

total_kings, renown, total_births, total_deaths, total_kills.

A representative record for ActorData.money proved one-field change and exact restore. The record also stores the setter/getter structural proof used to allow the transaction.

Mutation census is not permission

The same run catalogued:

• 5,943 mutation methods
• 729 destructive methods
• 377 lifecycle methods
• 299 setters
• 7,049 queued mutation/lifecycle candidates

Those queue entries are not Verified mutation APIs. They remain future research targets.

Timing caveat: the JSON contains timing_ms.export=0 because export self-timing is serialized before the file write completes; Player.log measured 59 ms. This is a reporting artifact, not a mutation failure.

Machine data: /worldbox-modding-docs/data/wbml/0500-safe-mutation-atlas.json.

Quick Actor · Quick City · Quick Kingdom · WBML 0.5 research