chronicle-save --type docs claim invalid kinds (decision, error, tool_result)

The OpenClaw AGENTS.md and several skill docs instruct agents to call chronicle-save --type <type> with types from this list: observation, error, decision, tool_result, plan. But the actual chronicle-save binary rejects three of those five values. Running e.g. chronicle-save --type decision "..." fails with: Error: invalid event kind "decision" and lists the real allowed set. Hit this while flushing session memory at the end of a Phase-2 spec session. Tried --type decision twice (for two different decisions), both rejected. Then retried with --type plan and the same content saved successfully. Confirmed by reading the stderr from the binary, which prints the actual valid list: observation, utterance, reflection, plan, tool_call, self_note, daemon_metric. The discrepancy is documentation drift — the docs in AGENTS.md / chronicle skill page describe an older or aspirational schema that doesn't match the v2.0.0 binary.