fix(tui): complete Rune mascot rebrand

ATTRIBUTION.md

@@ -15,7 +15,7 @@ The original Claurst license is preserved in full in `LICENSE.md`.
 - System prompt identity updated to reflect OpenCoven fork
 - Repository and homepage URLs updated to OpenCoven GitHub
 - Landing page (`index.html`), docs, and installer scripts rebranded
-- Mascot renamed from "Rustle" to "Rune" (doc comments; internal Rust identifiers `RustlePose`/`rustle_lines` intentionally preserved for merge-friendliness)
+- Mascot renamed from "Rustle" to "Rune" (internal Rust module and pose names now use companion/mascot terminology)
 - ACP server identity updated to `coven-code`
 - Share viewer URL updated to `opencoven.github.io/coven-code/session/`
 - `CNAME` file removed (upstream pointed to `claurst.kuber.studio`)

COVEN.md

@@ -78,10 +78,10 @@ Target OpenCoven brand palette:
 
 Replace `default_theme()` return values when brand assets are finalized.
 
-### 6. Companion mascot — `src-rust/crates/tui/src/rustle.rs`
+### 6. Companion mascot — `src-rust/crates/tui/src/mascot.rs`
 
 ASCII mascot renderer. Currently "Rune" (renamed from "Rustle" upstream).  
-To rebrand: rename `RustlePose` → `CompanionPose` (pending — "Rune" is the mascot name), update art in `rustle_lines()`, update call-sites in `render.rs` and `app.rs`.
+The internal module and pose naming now use companion/mascot terminology; update art in `mascot_lines_for()` and call-sites in `render.rs` / `app.rs`.
 
 ### 7. Memory / session hooks — `src-rust/crates/core/src/memdir.rs`, `session_storage.rs`
 

README.md

@@ -151,7 +151,7 @@ Coven Code is designed to grow into the OpenCoven ecosystem. Key seams for futur
 | Command registry | `src-rust/crates/commands/` | Add `/slash` commands |
 | TUI theme | `src-rust/crates/tui/src/theme_colors.rs` | OpenCoven violet/pink palette is the default; deuteranopia variant ships too. Diff viewer routes through `DiffPalette` so colour-blind users see orange/blue diffs. |
 | Memory / session | `src-rust/crates/core/src/memdir.rs`, `session_storage.rs` | Hook for Coven session/memory integration |
-| Companion mascot | `src-rust/crates/tui/src/rustle.rs` | ASCII mascot renderer; seven archetypes ship (`kitty`, `nova`, `cody`, `charm`, `sage`, `astra`, `echo`). F2 opens the live switcher. |
+| Companion mascot | `src-rust/crates/tui/src/mascot.rs` | ASCII mascot renderer; seven archetypes ship (`kitty`, `nova`, `cody`, `charm`, `sage`, `astra`, `echo`). F2 opens the live switcher. |
 | Coven daemon client | `src-rust/crates/core/src/coven_daemon.rs` | Typed `DaemonClient` over `~/.coven/coven.sock` speaking `coven.daemon.v1`. Powers `/coven` + the welcome status block. |
 
 ---

docs/src/content/welcome-screen.js

@@ -19,7 +19,7 @@ export function render() {
           <div class="tui-grid">
             <div>
               <div class="tui-greeting">Welcome back, val!</div>
-              <pre class="tui-rustle">      ∧___∧
+              <pre class="tui-mascot">      ∧___∧
      ( ・ω・ )
       o_(")(")</pre>
             </div>

docs/src/style.css

@@ -1105,7 +1105,7 @@ a {
   font-weight: 600;
   margin-bottom: 8px;
 }
-.tui-rustle {
+.tui-mascot {
   color: var(--color-accent-light);
   white-space: pre;
   font-size: 10.5px;

scripts/mascot-rebrand.test.mjs

@@ -0,0 +1,44 @@
+import assert from 'node:assert/strict';
+import fs from 'node:fs';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const repoRoot = path.dirname(path.dirname(fileURLToPath(import.meta.url)));
+
+function exists(relativePath) {
+  return fs.existsSync(path.join(repoRoot, relativePath));
+}
+
+function read(relativePath) {
+  return fs.readFileSync(path.join(repoRoot, relativePath), 'utf8');
+}
+
+assert.equal(exists('src-rust/crates/tui/src/mascot.rs'), true, 'mascot module file should exist');
+assert.equal(exists('src-rust/crates/tui/src/rustle.rs'), false, 'legacy rustle module file should be removed');
+assert.match(read('src-rust/crates/tui/src/lib.rs'), /pub mod mascot;/, 'tui lib should export mascot module');
+assert.doesNotMatch(read('src-rust/crates/tui/src/lib.rs'), /pub mod rustle;/, 'tui lib should not export rustle module');
+
+for (const file of [
+  'src-rust/crates/tui/src/mascot.rs',
+  'src-rust/crates/tui/src/familiar_card.rs',
+  'src-rust/crates/tui/src/app.rs',
+  'src-rust/crates/tui/src/render.rs',
+  'src-rust/crates/cli/src/main.rs',
+]) {
+  const source = read(file);
+  assert.doesNotMatch(
+    source,
+    /RustlePose|rustle_lines_for|crate::rustle|tick_rustle_pose|rustle_current_pose|rustle_look_down/,
+    `${file} should not use legacy Rustle identifiers`,
+  );
+}
+
+assert.match(read('src-rust/crates/tui/src/mascot.rs'), /pub enum CompanionPose/, 'pose type should be CompanionPose');
+assert.match(read('src-rust/crates/tui/src/mascot.rs'), /pub fn mascot_lines_for/, 'legacy rustle_lines_for should be renamed');
+
+assert.equal(exists('public/Rune.png'), true, 'Rune mascot asset should exist');
+assert.equal(exists('public/Pirate-Rune.png'), true, 'Pirate Rune asset should exist');
+assert.equal(exists('public/Rustle.png'), false, 'legacy Rustle asset should be removed');
+assert.equal(exists('public/Pirate-Rustle.png'), false, 'legacy Pirate Rustle asset should be removed');
+
+console.log('mascot rebrand smoke test passed');

src-rust/crates/cli/src/main.rs

@@ -2457,7 +2457,7 @@ async fn run_interactive(
     cmd_ctx.mcp_auth_runner = Some(mcp_auth_runner.clone());
     'main: loop {
         app.frame_count = app.frame_count.wrapping_add(1);
-        app.tick_rustle_pose();
+        app.tick_companion_pose();
         app.notifications.tick();
 
         // Process file injection dialog outcome (if any)

src-rust/crates/tui/src/app.rs

@@ -1321,7 +1321,7 @@ pub struct App {
     /// Current familiar pose for rendering. `Static` when idle; `Loading {
     /// frame }` while streaming has stalled long enough to surface a spinner.
     /// The glyph itself never walks or blinks.
-    pub rustle_current_pose: crate::rustle::RustlePose,
+    pub companion_current_pose: crate::mascot::CompanionPose,
     /// Instant the current turn's streaming began (reset each time streaming starts).
     pub turn_start: Option<std::time::Instant>,
     /// Elapsed time string for the last completed turn, e.g. "2m 5s".
@@ -1833,7 +1833,7 @@ impl App {
             new_messages_while_scrolled: 0,
             token_warning_threshold_shown: 0,
             session_start: std::time::Instant::now(),
-            rustle_current_pose: crate::rustle::RustlePose::Static,
+            companion_current_pose: crate::mascot::CompanionPose::Static,
             turn_start: None,
             last_turn_elapsed: None,
             last_turn_verb: None,
@@ -2402,24 +2402,24 @@ impl App {
     /// The glyph itself is static — this just toggles between `Static` and
     /// `Loading { frame }` so the eye-spinner kicks in when the assistant has
     /// gone quiet for 3+ seconds. Call once per frame before rendering.
-    pub fn tick_rustle_pose(&mut self) {
+    pub fn tick_companion_pose(&mut self) {
         let stalled = self.is_streaming
             && self
                 .stall_start
                 .map(|s| s.elapsed() > std::time::Duration::from_secs(3))
                 .unwrap_or(false);
-        self.rustle_current_pose = if stalled {
-            crate::rustle::RustlePose::Loading {
+        self.companion_current_pose = if stalled {
+            crate::mascot::CompanionPose::Loading {
                 frame: self.frame_count,
             }
         } else {
-            crate::rustle::RustlePose::Static
+            crate::mascot::CompanionPose::Static
         };
     }
 
     /// No-op retained for callsites left over from the animated era (Tab /
     /// mode-switch handlers). The static glyph has no look-down pose.
-    pub fn rustle_look_down(&mut self) {}
+    pub fn companion_look_down(&mut self) {}
 
     /// Cycle to the next agent mode: build → plan → explore → build.
     /// Sets `agent_mode_changed` so the main loop can update the query config
@@ -5078,7 +5078,7 @@ impl App {
                 } else if !self.is_streaming && self.prompt_input.is_empty() {
                     // Cycle agent mode: build → plan → explore → build
                     self.cycle_agent_mode();
-                    self.rustle_look_down();
+                    self.companion_look_down();
                 }
             }
 
@@ -5952,7 +5952,7 @@ impl App {
                         self.refresh_prompt_input();
                     } else if self.prompt_input.is_empty() {
                         self.cycle_agent_mode();
-                        self.rustle_look_down();
+                        self.companion_look_down();
                     }
                 }
                 false

src-rust/crates/tui/src/familiar_card.rs

@@ -7,12 +7,12 @@
 //! the user still has a signal that work is in progress.
 //!
 //! Built-in archetypes dispatch to the pixel-art builders in
-//! [`crate::rustle`]. Procedural archetypes ([`Archetype::SigilCrystal`] etc.)
+//! [`crate::mascot`]. Procedural archetypes ([`Archetype::SigilCrystal`] etc.)
 //! draw a colored frame around the familiar's emoji so any user-defined entry
 //! from `~/.coven/familiars.toml` gets first-class visual identity.
 
 use crate::familiar_theme::{Archetype, FamiliarPalette, FamiliarTheme};
-use crate::rustle::{archetype_lines, RustlePose};
+use crate::mascot::{archetype_lines, CompanionPose};
 use ratatui::style::{Color, Modifier, Style};
 use ratatui::text::{Line, Span};
 
@@ -51,8 +51,8 @@ pub fn render_card(
     loading: Option<u64>,
 ) -> Vec<Line<'static>> {
     let pose = match loading {
-        Some(frame) => RustlePose::Loading { frame },
-        None => RustlePose::Static,
+        Some(frame) => CompanionPose::Loading { frame },
+        None => CompanionPose::Static,
     };
     let glyph = glyph_lines(theme, &pose);
 
@@ -240,7 +240,7 @@ fn access_line(theme: &FamiliarTheme, primary: Color, inner_w: u16) -> Line<'sta
 
 // ── Glyph dispatch ───────────────────────────────────────────────────────────
 
-fn glyph_lines(theme: &FamiliarTheme, pose: &RustlePose) -> Vec<Line<'static>> {
+fn glyph_lines(theme: &FamiliarTheme, pose: &CompanionPose) -> Vec<Line<'static>> {
     match theme.archetype {
         Archetype::SigilCrystal => sigil_crystal(&theme.palette, &theme.emoji),
         Archetype::SigilHex => sigil_hex(&theme.palette, &theme.emoji),

src-rust/crates/tui/src/familiar_theme.rs

@@ -28,7 +28,7 @@ use ratatui::style::Color;
 
 /// Four-color palette covering body fill, accent details, eye sockets, and
 /// the deep background behind the eyes. Eye + bg are intentionally shared
-/// across all themes so the eye rendering helpers in [`crate::rustle`] can
+/// across all themes so the eye rendering helpers in [`crate::mascot`] can
 /// stay archetype-agnostic.
 #[derive(Debug, Clone, Copy)]
 pub struct FamiliarPalette {
@@ -51,7 +51,7 @@ impl FamiliarPalette {
 
 // ── Archetype ────────────────────────────────────────────────────────────────
 
-/// Which renderer in [`crate::rustle`] / [`crate::familiar_card`] draws the
+/// Which renderer in [`crate::mascot`] / [`crate::familiar_card`] draws the
 /// glyph body. The first seven variants map to the hand-crafted built-ins;
 /// `SigilCrystal`/`SigilHex`/`SigilRune`/`SigilSeal` are procedural frames
 /// used for any user-defined familiar.

src-rust/crates/tui/src/lib.rs

@@ -97,6 +97,8 @@ pub mod invalid_config_dialog;
 pub mod key_input_dialog;
 /// Inline image rendering via the Kitty graphics protocol (with text fallback).
 pub mod kitty_image;
+/// Rune mascot rendering.
+pub mod mascot;
 /// MCP server management UI.
 pub mod mcp_view;
 /// Memory file selector overlay (AGENTS.md browser).
@@ -125,8 +127,6 @@ pub mod plugin_views;
 pub mod prompt_input;
 /// All ratatui rendering logic.
 pub mod render;
-/// Rune mascot rendering.
-pub mod rustle;
 /// Session branching overlay (Ctrl+B) — create and switch between conversation branches.
 pub mod session_branching;
 /// Session browser overlay (/session, /resume, /rename, /export).