episode: SBA Scout Rust: two separate databases for Rust vs Python apps

episodes/2026-02-28.md

@@ -94,3 +94,7 @@ Errors
 ## 12:09 - Rust CSV importer integration tested — matches Python DB exactly
 - **Type:** solution
 - **Tags:** sba-scout, rust, importer, csv, testing, integration-test
+
+## 12:09 - SBA Scout Rust: two separate databases for Rust vs Python apps
+- **Type:** decision
+- **Tags:** sba-scout, rust, database, architecture, sqlite, migration

graph/decisions/sba-scout-rust-two-separate-databases-for-rust-vs-python-app-71261e.md

@@ -0,0 +1,33 @@
+---
+id: 71261e95-805e-44a0-8ee2-4a0f683dbc1f
+type: decision
+title: "SBA Scout Rust: two separate databases for Rust vs Python apps"
+tags: [sba-scout, rust, database, architecture, sqlite, migration]
+importance: 0.65
+confidence: 0.8
+created: "2026-02-28T18:09:49.826680+00:00"
+updated: "2026-02-28T18:09:49.826680+00:00"
+---
+
+# SBA Scout Rust: two separate databases for Rust vs Python apps
+
+## Decision
+
+The Rust rewrite maintains its own independent SQLite database, separate from the Python app.
+
+| App    | DB Path                        | Size (approx)     |
+|--------|-------------------------------|-------------------|
+| Python | `data/sba_scout.db`           | 1.7 MB (full)     |
+| Rust   | `rust/data/sba_scout.db`      | 491 KB (initial, grows after import) |
+
+Both paths are relative to the repo root. The Rust app's `config.rs` defaults `db_path` to `data/sba_scout.db` relative to `cwd`, which resolves to `rust/data/sba_scout.db` when running from the `rust/` directory.
+
+## CSV Import Paths (Rust)
+
+Default paths (relative to `rust/` cwd):
+- `docs/sheets_export/BatterCalcs.csv`
+- `docs/sheets_export/PitcherCalcs.csv`
+
+## Rationale
+
+The Rust rewrite is being developed on a separate branch (`feat/rust-rewrite`) and needs its own DB so development and testing don't interfere with the production Python app data.