[codex] Add CAN ID filtering to summary CLIs

[bobzhu94]

Summary

• Add repeated --id filtering to can-log-summary, can-batch-summary, and can-batch-check.
• Reuse the existing CAN ID normalization path so decimal and hex IDs resolve consistently.
• Document the focused CAN ID workflow in README and changelog.

Why

Focused CAN ID filtering makes bench debugging faster when a maintainer wants to inspect one publisher or message across multiple logs.

Validation

• npm test
• npm run smoke
• node src/can-log-summary.mjs --id 0x180 examples/can-sample.log
• node src/can-batch-summary.mjs --id 0x180 examples/can-sample.log examples/can-sample-jitter.log
• node src/can-batch-check.mjs --id 0x180 --max-jitter-ms 8 examples/can-sample.log examples/can-sample-jitter.log