Expert: Terminal/TUI Engineer

Scope

Review SPEC.md's REPL (FR-2), autocomplete (FR-6, FR-19), syntax highlighting (FR-7), TUI pager (FR-8), status bar (FR-25), keybindings (FR-18), and multi-line mode (FR-21).

Deliverables

• REPL architecture: rustyline customization depth (completer, highlighter, hinter, validator)
• TUI pager design: ratatui integration, alternate screen management, coexistence with REPL
• Syntax highlighting: syntect vs tree-sitter for SQL (performance, accuracy, theme support)
• Autocomplete engine: context detection, schema metadata caching, fuzzy matching algorithm
• Status bar: persistent rendering without interfering with REPL or pager
• Input mode coexistence: REPL ↔ pager ↔ AI response transitions
• Cross-platform terminal compatibility risks (Windows Terminal, ConPTY, SSH sessions)
• Unicode/wide-character handling in table output and input

Context

Three rendering contexts must coexist: REPL, TUI pager, and status bar. This is the hardest UX integration challenge in the project.

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