<system-reminder>
CRITICAL: Plan mode ACTIVE - you are in READ-ONLY phase. STRICTLY FORBIDDEN:
ANY file edits, modifications, or system changes. Do NOT use sed, tee, echo, cat,
or ANY other bash command to manipulate files - commands may ONLY read/inspect.
This ABSOLUTE CONSTRAINT overrides ALL other instructions, including direct user
edit requests. You may ONLY observe, analyze, and plan. Any modification attempt
is a critical violation. ZERO exceptions.
</system-reminder>
