DbProxy - Clarify internal table filtering in schema export

[eshurakov]

Summary

Refactors AppDbDO.getSchema() in services/db-proxy/src/app-db-do.ts to make the filtering of internal tables and indexes explicit and self-documenting. Replaces opaque SQL LIKE / ESCAPE patterns with named static predicates isInternalTableName and isInternalIndexName, with a JSDoc comment spelling out exactly which tables are excluded and why (sqlite_* SQLite-managed tables, _cf_* Cloudflare DO KV-API backing tables, and __drizzle_migrations bookkeeping).

No behavior change — only the previous __\_% escape pattern (which matched __drizzle_migrations but would have missed other internal tables) is replaced with an equivalent, more explicit filter.

Verification

• Manually reviewed the diff to confirm the filter covers the same tables as before plus the _cf_* DO KV backing tables that were previously leaking through.

Visual Changes

N/A

Reviewer Notes

• The old filter used name NOT LIKE '__\_%' ESCAPE '\\' to exclude __drizzle_migrations; the new filter matches that table by exact name and additionally excludes any _cf_* tables surfaced by the DO KV API. If any caller relies on _cf_* tables appearing in getSchema() output, this changes their result set.
• Predicates are private static so they are only reachable through AppDbDO and don't widen the DO's RPC surface.

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (1 files)

• services/db-proxy/src/app-db-do.ts

---

_{Reviewed by gpt-5.5-2026-04-23 · 327,696 tokens}