feat: add dbtool tui live query workspace

- add shared db-app layer for connect/inspect/query/export events
- add dbtool-tui workspace with sqlite-local live flow and QA docs
- include host-validated acceptance updates for CMP-36

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/tui/Cargo.toml

@@ -0,0 +1,20 @@
+[package]
+name = "dbtool-tui"
+version.workspace = true
+edition.workspace = true
+rust-version.workspace = true
+publish = false
+
+[[bin]]
+name = "dbtool-tui"
+path = "src/main.rs"
+
+[dependencies]
+crossterm = "0.28.1"
+db-app.workspace = true
+db-config.workspace = true
+db-core.workspace = true
+ratatui = "0.29.0"
+
+[lints]
+workspace = true