Every execution tool call, the driver's and a helper's, gets a verdict from code before it runs (P3, P4, D6). - nisse_core.actions, nisse-core's first code: Action and Verdict, and reading shell commands statically, segment by segment (cd, wrappers, sh -c). What can't be read that way is unknown; a line is as bad as its worst command. - nisse_dev.loop.actions, the rule table: reading, checks and tests are harmless; workspace edits, local git and installs on the build VM are contained; pushing, other hosts, uploads, publishing, the forge's own tools, deleting outside the workspace and wrecking the VM are dangerous; changing branches by hand is refused (the harness owns branches) with a pointer to the milestone tools. - A dangerous call isn't run. The item waits on the operator with a question rendered from the action, and `allow` lets exactly that action run once. A helper can't ask, so it is refused and told to hand back. Unknown actions run, logged, until the classifier (M3.2). - Every verdict is an action_verdict event, which no model sees, and an oplog line; `details` shows the counts and every action not simply run. - The property walk gains dangerous_only_when_allowed (checked against a mutant that doesn't use the allow up); the slice e2e checks every call was judged and none needed an allow. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01PPQ14L3LikyefCMFBqEbKE