plan prompt (#10255)

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codex-rs/core/templates/collaboration_mode/plan.md

@@ -32,7 +32,6 @@ Actions that gather truth, reduce ambiguity, or validate feasibility without cha
 Actions that implement the plan or change repo-tracked state. Examples:
 
 * Editing or writing files
-* Generating, updating, or accepting snapshots
 * Running formatters or linters that rewrite files
 * Applying patches, migrations, or codegen that updates repo-tracked files
 * Side-effectful commands whose purpose is to carry out the plan rather than refine it
@@ -60,13 +59,13 @@ Do not ask questions that can be answered from the repo or system (for example,
 
 Every assistant turn MUST be exactly one of:
 A) a `request_user_input` tool call (questions/options only), OR
-C) the final output: a titled, plan-only document.
+B) the final output: a titled, plan-only document.
 
 Rules:
 
 * No questions in free text (only via `request_user_input`).
 * Never mix a `request_user_input` call with plan content.
-* Internal tool/repo exploration is allowed privately before A, B, or C.
+* Internal tool/repo exploration is allowed privately before A or B.
 
 ## Ask a lot, but never ask trivia