Merge codex/delete-whale-art-20260829: delete the hand-drawn whale art and ▚△▞ crown (founder directive)

whales.rs portraits, idle-whale rows, the fleet-roster portrait block, and
the last live crown (the composer chrome cap) are gone. The roster keeps
its non-art identity; the startup hero keeps the GENERATED 12x6 fluke
block from the brand master path. Four absence tests pin the crown out.

Verified by the integrator: full tui lib suite 11,523 passed / 0 failed;
crown grep clean (only !contains assertions remain); budget 444 exactly;
fmt/clippy clean; net −764 lines.

Author: CodeWhale Bot

crates/tui/src/tui/app.rs

@@ -1537,9 +1537,6 @@ pub struct App {
     pub calm_mode: bool,
     pub low_motion: bool,
     pub constrained_frame_rate: bool,
-    /// Start of the idle-welcome caustic. `None` until that mark is actually
-    /// on screen, so launch and onboarding cannot consume the first sweep.
-    pub ocean_started_at: Option<Instant>,
     /// The ambient animation clock, in clamped milliseconds. Creature and
     /// water positions are pure functions of this value; advancing it by at
     /// most [`App::AMBIENT_MAX_STEP_MS`] per sampled frame keeps motion

crates/tui/src/tui/app/init.rs

@@ -837,7 +837,6 @@ impl App {
             calm_mode,
             low_motion,
             constrained_frame_rate,
-            ocean_started_at: None,
             ambient_clock_ms: 0,
             ambient_clock_sampled_at: None,
             ambient_idle_since: None,

crates/tui/src/tui/composer_chrome.rs

@@ -124,16 +124,18 @@ mod tests {
 
 // ---------------------------------------------------------------------------
 // Tideline composer restyle (spec §2 composer decision, §5a "Composer"):
-// rounded border + fluke cap + `[↑]` send hitbox. Translation scaffolding in
+// rounded border + `[↑]` send hitbox. Translation scaffolding in
 // the topbar mold — a pure, deterministic widget over injected state; the
 // composer authority logic (composer_ui.rs) is untouched, and wiring into
 // `ui/frame.rs` is the landing slice after #5698 settles.
 //
 // Cell rules (spec §2): no bezier strokes — `╭─╮│╰╯` border dim at rest and
-// Info on focus; the three-cell fluke (`▚△▞`, ASCII `<.>`) is set into the
-// top-right corner as the cap and carries the whale identity; the send `↑`
-// is a 3-cell `[↑]` hitbox right-aligned inside the border. The hull taper
-// silhouette is deliberately dropped (sub-cell vector work).
+// Info on focus; the send `↑` is a 3-cell `[↑]` hitbox right-aligned inside
+// the border. The hand-drawn three-cell crown fluke this cap used to carry
+// was deleted by the 2026-08-29 founder decree (terminal marks must be
+// generated from the brand master path, never hand-drawn); the corner is a
+// plain `╮` again. The hull taper silhouette is deliberately dropped
+// (sub-cell vector work).
 
 use ratatui::{
     buffer::Buffer,
@@ -144,14 +146,6 @@ use unicode_width::UnicodeWidthStr;
 
 use crate::palette::{ChromeInk, UiTheme, chrome_style};
 
-/// The three-cell crown glyph for the composer's fluke cap (ASCII `<.>`).
-/// Local to this later-slice scaffolding: the topbar's own copies were
-/// deleted by the founder decree (terminal marks must be generated from the
-/// brand master path); the composer cap keeps the hand-drawn projection
-/// until its slice lands and replaces it.
-const FLUKE: &str = "▚△▞";
-const FLUKE_ASCII: &str = "<.>";
-
 /// The composer's fixed docked height in the work-screen shell (spec §5b).
 #[allow(dead_code)] // translation scaffolding: wired by the landing slice
 pub const TIDELINE_COMPOSER_HEIGHT: u16 = 4;
@@ -222,10 +216,6 @@ impl<'a> TidelineComposer<'a> {
             })
             .collect()
     }
-
-    fn fluke(&self) -> &'static str {
-        if self.ascii_safe { FLUKE_ASCII } else { FLUKE }
-    }
 }
 
 fn chrome(theme: &UiTheme, ink: ChromeInk) -> Style {
@@ -253,20 +243,15 @@ pub fn render_tideline_composer(area: Rect, buf: &mut Buffer, composer: &Tidelin
     };
     let border = chrome(theme, border_ink);
 
-    // Rounded border. Top row: `╭──…──▚△▞` — the fluke cap replaces the
-    // top-right corner (spec §2). The cap wakes with focus (bold).
-    let fluke = composer.fluke();
-    let fluke_w = fluke.width() as u16;
-    let top_fill = area.width.saturating_sub(1 + fluke_w).max(1);
+    // Rounded border. Top row: `╭──…──╮` — the hand-drawn crown fluke that
+    // used to replace the top-right corner was deleted by the founder
+    // decree; the corner is a plain `╮` again, waking with the border only.
+    let top_fill = usize::from(area.width.saturating_sub(2).max(1));
     let top: String = std::iter::once('╭')
-        .chain(std::iter::repeat_n('─', usize::from(top_fill)))
+        .chain(std::iter::repeat_n('─', top_fill))
+        .chain(std::iter::once('╮'))
         .collect();
     put(buf, area.x, area.y, &composer.sym(&top), border);
-    let mut cap_style = chrome(theme, ChromeInk::Attention);
-    if composer.focused {
-        cap_style = cap_style.add_modifier(Modifier::BOLD);
-    }
-    put(buf, area.x + area.width - fluke_w, area.y, fluke, cap_style);
 
     // Bottom row: `╰──…──╯`.
     let bottom_fill = usize::from(area.width.saturating_sub(2));

crates/tui/src/tui/composer_chrome/tideline_tests.rs

@@ -36,14 +36,18 @@ fn composer_matches_goldens_at_blocker_sizes() {
 }
 
 #[test]
-fn composer_border_is_rounded_with_fluke_cap_and_send_hitbox() {
+fn composer_border_is_rounded_with_send_hitbox_and_no_crown() {
     let composer = TidelineComposer::new(&UI_THEME, "draft").focused(true);
     let text = draw_docked(80, 24, &composer);
     let top = text.lines().nth(20).unwrap_or_default();
     assert!(top.starts_with('╭'), "rounded top-left: {top:?}");
     assert!(
-        top.ends_with("▚△▞"),
-        "fluke cap replaces the corner: {top:?}"
+        top.ends_with('╮'),
+        "plain rounded top-right corner: {top:?}"
+    );
+    assert!(
+        !text.contains("▚△▞"),
+        "the hand-drawn crown fluke was deleted by the founder decree: {text}"
     );
     let bottom = text.lines().nth(23).unwrap_or_default();
     assert!(
@@ -102,9 +106,10 @@ fn composer_ascii_safe_projects_to_ascii() {
     let text = draw_docked(80, 24, &composer);
     let top = text.lines().nth(20).unwrap_or_default();
     assert!(
-        top.starts_with('+') && top.ends_with("<.>"),
-        "ascii border+cap: {top:?}"
+        top.starts_with('+') && top.ends_with('+'),
+        "ascii border corners: {top:?}"
     );
+    assert!(!text.contains("<.>"), "ascii crown is gone too: {text}");
     assert!(text.contains("[^]"), "ascii send: {text}");
     for ch in text.chars() {
         if ch != '\n' {

crates/tui/src/tui/goldens/composer_100x30.txt

@@ -24,7 +24,7 @@
 
 
 
-╭────────────────────────────────────────────────────────────────────────────────────────────────▚△▞
+╭──────────────────────────────────────────────────────────────────────────────────────────────────╮
 │ restyle the footer band▌                                                                         │
 │                                                                                              [↑] │
 ╰──────────────────────────────────────────────────────────────────────────────────────────────────╯

crates/tui/src/tui/goldens/composer_120x32.txt

@@ -26,7 +26,7 @@
 
 
 
-╭────────────────────────────────────────────────────────────────────────────────────────────────────────────────────▚△▞
+╭──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
 │ restyle the footer band▌                                                                                             │
 │                                                                                                                  [↑] │
 ╰──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯

crates/tui/src/tui/goldens/composer_160x40.txt

@@ -34,7 +34,7 @@
 
 
 
-╭────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────▚△▞
+╭──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
 │ restyle the footer band▌                                                                                                                                     │
 │                                                                                                                                                          [↑] │
 ╰──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯

crates/tui/src/tui/goldens/composer_80x24.txt

@@ -18,7 +18,7 @@
 
 
 
-╭────────────────────────────────────────────────────────────────────────────▚△▞
+╭──────────────────────────────────────────────────────────────────────────────╮
 │ restyle the footer band▌                                                     │
 │                                                                          [↑] │
 ╰──────────────────────────────────────────────────────────────────────────────╯

crates/tui/src/tui/goldens/settings_100x30.txt

@@ -23,7 +23,7 @@
                                                                 WHALE     │ASSIGNMENT │STATE        
                                                               ▶ whale-1   │restyle th…│● working    
                                                                 whale-2   │golden buf…│✓ done       
-                                                              ╭──────────────────────────────────▚△▞
+                                                              ╭────────────────────────────────────╮
                                                               │ the preview is the product▌        │
 ? help                                                        │                                [↑] │
 / file issue                                                  ╰────────────────────────────────────╯

crates/tui/src/tui/goldens/settings_120x32.txt

@@ -25,7 +25,7 @@
                                                                             WHALE     │ASSIGNMENT         │STATE        
                                                                           ▶ whale-1   │restyle the footer…│● working    
                                                                             whale-2   │golden buffers     │✓ done       
-                                                                          ╭──────────────────────────────────────────▚△▞
+                                                                          ╭────────────────────────────────────────────╮
                                                                           │ the preview is the product▌                │
 ? help                                                                    │                                        [↑] │
 / file issue                                                              ╰────────────────────────────────────────────╯