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Add a framework mechanism for prepared modules and validators to contribute checkpoint identity fingerprints

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Eric Rakestraw
2026-07-20 15:14:41 -05:00
parent 87c57681f6
commit 0f25e7339f
15 changed files with 539 additions and 26 deletions
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docs/operations.md
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@@ -89,6 +89,11 @@ Checkpoints use the selected root and the existing identity hierarchy:
<checkpoint-root>/<pipeline-id>/<input-key>-<source-or-input-digest>/<pipeline-digest>/<identity-digest>/...
```
The final identity digest includes stable semantic fingerprints explicitly
contributed by prepared modules and validators. Adding or changing one of
these fingerprints intentionally causes a cold cache miss; old checkpoint
directories are left in place and are never migrated or deleted automatically.
An empty configured directory selects
`<os.UserCacheDir>/notarius/checkpoints`. The root is exact when configured.
Created directories and files use `0700` and `0600` permissions on supported