feat: complete TUI Phase 0 — Toolchain Gate

Implements the full lore-tui crate scaffold with 6 Phase 0 modules:

- message.rs: Msg (~40 variants), Screen (12), EntityKey, AppError, InputMode
- clock.rs: Clock trait with SystemClock + FakeClock for deterministic testing
- safety.rs: Terminal sanitizer (ANSI filter), URL policy, PII/secret redaction
- db.rs: DbManager with 3 reader pool (round-robin) + dedicated writer (WAL mode)
- theme.rs: Flexoki adaptive theme (19 slots), state/event colors, label styling
- app.rs: Minimal LoreApp Model trait impl proving FrankenTUI integration

68 tests, clippy clean, fmt clean. Closes bd-3ddw, bd-c9gk, bd-2lg6,
bd-3ir1, bd-2kop, bd-5ofk, bd-2emv, bd-1cj0.

crates/lore-tui/Cargo.toml

@@ -0,0 +1,39 @@
+[package]
+name = "lore-tui"
+version = "0.1.0"
+edition = "2024"
+description = "Terminal UI for Gitlore — local GitLab data explorer"
+authors = ["Taylor Eernisse"]
+license = "MIT"
+
+[[bin]]
+name = "lore-tui"
+path = "src/main.rs"
+
+[dependencies]
+# FrankenTUI (Elm-architecture TUI framework)
+ftui = "0.1.1"
+
+# Lore library (config, db, ingestion, search, etc.)
+lore = { path = "../.." }
+
+# CLI
+clap = { version = "4", features = ["derive", "env"] }
+
+# Error handling
+anyhow = "1"
+
+# Time
+chrono = { version = "0.4", features = ["serde"] }
+
+# Paths
+dirs = "6"
+
+# Database (read-only queries from TUI)
+rusqlite = { version = "0.38", features = ["bundled"] }
+
+# Terminal (crossterm for raw mode + event reading, used by ftui runtime)
+crossterm = "0.28"
+
+# Regex (used by safety module for PII/secret redaction)
+regex = "1"