Bug Description

In v0.31.3, source routing is silently ignored in two places:

1. gbrain import does not honor documented source-routing signals for attribution. In my repro, imported pages/chunks landed under default even when the caller intended a named source.
2. gbrain search --source <id> behaves like a no-op filter. Searching known-empty sources returns the same results as searching the populated source.

This makes multi-source attribution unsafe because the CLI exits successfully while writing/searching the wrong source partition.

Steps to Reproduce

rm -rf ~/.gbrain
gbrain init --pglite

gbrain sources add hermesclaude-main --path /Users/tm_admin/Documents/HermesClaude --federated
gbrain sources add hermesintake --path /Users/tm_admin/Documents/HermesIntake --no-federated
gbrain sources add openclaw-wiki --path /Users/tm_admin/.openclaw/wiki/main --no-federated

# Attempt import into registered source
gbrain import /Users/tm_admin/Documents/HermesClaude --source hermesclaude-main --no-embed

gbrain sources list

gbrain search HermesClaude --source hermesclaude-main --limit 5
gbrain search HermesClaude --source hermesintake --limit 5
gbrain search HermesClaude --source openclaw-wiki --limit 5
gbrain search HermesClaude --source default --limit 5

Expected Behavior

• import --source hermesclaude-main writes pages/chunks under pages.source_id = 'hermesclaude-main'.
• default remains at 0 pages when nothing is imported to default.
• search --source hermesintake / --source openclaw-wiki returns no hits for HermesClaude-only content.
• search --source hermesclaude-main returns the imported hits.

Actual Behavior Observed on v0.31.3

• Import completed with rc=0 but source attribution went to default.
• search --source <id> returned the same top results for populated and known-empty sources.

Local Fix Verified

I patched locally and verified the acceptance case now passes:

default               federated          0 pages
hermes-local-wiki     isolated           0 pages
hermesclaude-main     federated        567 pages
hermesintake          isolated           0 pages
openclaw-wiki         isolated           0 pages

Search query: HermesClaude

• --source hermesclaude-main: returns HermesClaude hits
• --source hermesintake: No results
• --source openclaw-wiki: No results
• --source default: No results
• --source __all__: returns HermesClaude hits

Focused tests passed:

bun run typecheck
bun test test/source-id-tx-regression.test.ts test/build-llms.test.ts
27 pass / 0 fail

Patch Shape

Local patch does the following:

• src/commands/import.ts

  • Adds CLI --source <id> support.
  • Uses existing resolveSourceId(engine, explicitSource, process.cwd()).
  • Preserves programmatic opts.sourceId compatibility.
  • Guards missing --source values.
  • Prevents the source value from being mistaken for the import directory.

• src/core/operations.ts

  • Adds source param to the search operation.
  • Threads it into engine.searchKeyword(..., { sourceId }).

• src/core/pglite-engine.ts and src/core/postgres-engine.ts

  • Apply p.source_id = $N filter in searchKeyword when opts.sourceId is set.
  • Treat __all__ as explicit unfiltered search.

• Adds regression coverage in test/source-id-tx-regression.test.ts.

Environment

• gbrain version: 0.31.3
• DB: PGLite
• OS: macOS
• Local patch commit: fc143bb fix source routing for import and search