Summary

• add a repo-local convex-inspect binary for source inspection
• narrow convex-sync down to the heavy export/runtime commands only
• clean up the leftover tracked old crate paths from the first refactor

What Changed

• add apps/convex-inspect with:
  • schemas
  • snapshot
  • deltas
• narrow apps/convex-sync to:
  • sync-once
  • materialize-staging
  • publish-s3
  • run
• update justfile so schemas / snapshot / deltas now route to convex-inspect
• update root and app readmes so the two-binary shape is explicit
• update release docs to keep convex-inspect repo-local and convex-sync as the only released binary
• remove the leftover tracked crates/convex-cdc-core and crates/convex-target-s3 paths now that their renamed replacements are the real source of truth

Why

This lands the final binary boundary we aligned on, not an intermediate state:

• convex-inspect is the lightweight source-inspection tool
• convex-sync is the heavy parquet -> staging -> S3/export runtime

That makes the command surface clearer and sets up a later CI split between light and heavy lanes.

Verification

• cargo fmt --all --check
• cargo clippy --workspace --all-targets --all-features -- -D warnings
• cargo test --workspace
• cargo run -p convex-inspect -- --help
• cargo run -p convex-sync -- --help
• actionlint -config-file .github/actionlint.yaml .github/workflows/*.yml