Planning Mode instructions may be too strict #4627

Description

> "CRITICAL: Plan mode ACTIVE - you are in READ-ONLY phase. STRICTLY FORBIDDEN: ANY file edits, modifications, or system changes... Any modification attempt is a critical violation. ZERO exceptions."

Even providing source code analysis that could be used to perform file modifications violates this constraint. The reminder explicitly prohibits this, including "direct user requests."

certain models end up getting stuck in this loop, requiring significant prompt back tracking to figure out what triggered this specific interpretation, seems to be relating to questions around code refactoring, even after clarifying that the user will use those recommendations to make changes themselves.

might be better when in plan mode to just disable any tool calls that have side effects, and any unknown tools ask the user on a per call basis, then tell the model that they should only read files, permitting them to provide analysis, etc

as switching to build mode in order to do analysis work seems backwards

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