CodexScope v0.1.7

Fixes inflated peak TPM caused by repeated Codex token snapshots in overlapping JSONL files.

• Deduplicates repeated token_count snapshots by session, model, and cumulative total_token_usage.
• Bumps the local cache format so affected users regenerate clean data once.
• Adds a regression test for repeated snapshot deduplication.

Observed on local data:

• Before: peak TPM 164.68M
• After: peak TPM 3.92M
• Records after dedupe: 44,459
• Total after dedupe: 5.09B tokens

Checks:

• go test ./...
• npm run build:frontend
• npm run release:local