Update cheatsheets

tldr/opencode-stats

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# opencode stats
+
+> Show token usage and cost statistics.
+> More information: <https://opencode.ai/docs/cli#stats>.
+
+- Show statistics:
+
+`opencode stats`
+
+- Show statistics for the last N days:
+
+`opencode stats --days {{30}}`
+
+- Show statistics with model breakdown:
+
+`opencode stats --models`
+
+- Show top N models by usage:
+
+`opencode stats --models {{5}}`
+
+- Show statistics for a specific project (omit the project name to use the current project):
+
+`opencode stats --project {{project_name}}`
+
+- Show the top N tools used:
+
+`opencode stats --tools {{10}}`
+
+- Display help:
+
+`opencode stats {{[-h|--help]}}`