feat: Use eye-declare for more performant and flexible AI TUI (#3343)

This PR replaces the mess of custom rendering code in Atuin AI with
[eye-declare](https://github.com/BinaryMuse/eye-declare), and updates
the TUI to feel more terminal-native: output appears inline and persists
in scrollback, so you can scroll up and look at previous conversations
for reference.

The "review" state — which used to exist between the LLM generating a
response and the user either executing or following up — has been
removed; just start typing to follow up with the LLM, or press `enter`
at the empty input box to execute the suggested command.

<img width="1203" height="633" alt="image"
src="https://github.com/user-attachments/assets/159ee447-9a2a-4edd-b56e-a79bf1aaaa94"
/>

1 files changed, 0 insertions, 99 deletions

diff --git a/crates/atuin-ai/src/tui/spinner.rs b/crates/atuin-ai/src/tui/spinner.rs
deleted file mode 100644
index 138e0269..00000000
--- a/crates/atuin-ai/src/tui/spinner.rs
+++ /dev/null
@@ -1,99 +0,0 @@
-//! Spinner styles and configuration for TUI animations
-//!
-//! To experiment with different spinners, change `ACTIVE_SPINNER` below.
-
-use std::time::Duration;
-
-/// Active spinner style - change this to experiment with different styles
-pub const ACTIVE_SPINNER: SpinnerStyle = SpinnerStyle::Dots;
-
-/// Spinner style definitions
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-pub enum SpinnerStyle {
-    /// Classic ASCII line spinner: / - \ |
-    Line,
-    /// Braille dots pattern
-    Dots,
-    /// Growing/shrinking dots
-    Pulse,
-    /// Simple arrow rotation
-    Arrow,
-    /// Block building
-    Block,
-}
-
-impl SpinnerStyle {
-    /// Get the frames for this spinner style
-    pub const fn frames(&self) -> &'static [&'static str] {
-        match self {
-            SpinnerStyle::Line => &["/", "-", "\\", "|"],
-            SpinnerStyle::Dots => &["⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"],
-            SpinnerStyle::Pulse => &["·", "•", "●", "•"],
-            SpinnerStyle::Arrow => &["←", "↖", "↑", "↗", "→", "↘", "↓", "↙"],
-            SpinnerStyle::Block => &[
-                "▏", "▎", "▍", "▌", "▋", "▊", "▉", "█", "▉", "▊", "▋", "▌", "▍", "▎", "▏",
-            ],
-        }
-    }
-
-    /// Get the recommended tick interval for this spinner style
-    /// Faster spinners need shorter intervals to look smooth
-    pub const fn tick_interval(&self) -> Duration {
-        match self {
-            SpinnerStyle::Line => Duration::from_millis(150),
-            SpinnerStyle::Dots => Duration::from_millis(80),
-            SpinnerStyle::Pulse => Duration::from_millis(200),
-            SpinnerStyle::Arrow => Duration::from_millis(100),
-            SpinnerStyle::Block => Duration::from_millis(80),
-        }
-    }
-
-    /// Get the frame at the given index (wraps around)
-    pub fn frame_at(&self, index: usize) -> &'static str {
-        let frames = self.frames();
-        frames[index % frames.len()]
-    }
-
-    /// Get the number of frames in this spinner
-    pub fn frame_count(&self) -> usize {
-        self.frames().len()
-    }
-}
-
-/// Get the active spinner's frame at the given index
-pub fn active_frame(index: usize) -> &'static str {
-    ACTIVE_SPINNER.frame_at(index)
-}
-
-/// Get the active spinner's tick interval
-pub fn active_tick_interval() -> Duration {
-    ACTIVE_SPINNER.tick_interval()
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn test_frame_wrapping() {
-        let style = SpinnerStyle::Line;
-        assert_eq!(style.frame_at(0), "/");
-        assert_eq!(style.frame_at(4), "/"); // wraps
-        assert_eq!(style.frame_at(5), "-");
-    }
-
-    #[test]
-    fn test_all_styles_have_frames() {
-        let styles = [
-            SpinnerStyle::Line,
-            SpinnerStyle::Dots,
-            SpinnerStyle::Pulse,
-            SpinnerStyle::Arrow,
-            SpinnerStyle::Block,
-        ];
-        for style in styles {
-            assert!(!style.frames().is_empty());
-            assert!(style.tick_interval().as_millis() > 0);
-        }
-    }
-}