add token usage diagnostics

Sessions

Changes

5

• cmd/entire/cli

• Mcheckpoint_group.go+3

• Acheckpoint_tokens.go+322

• Asession_tokens.go+408

• Msessions.go+3

• Msessions_test.go+510/-8

Commands: list List checkpoints on the current branch explain Explain a checkpoint, commit, or session tokens Show token usage and optimization recommendations search Search checkpoints (semantic + keyword)

Examples: entire checkpoint list entire checkpoint explain <id|sha> entire checkpoint tokens entire checkpoint search "fix login"