feat(FN-3039): bundle nerd font glyph asset and prioritize it in terminal f

Merges two features: FN-3039 bundles a 2.5MB Nerd Font glyph asset into the dashboard and updates the terminal to prioritize the bundled font, improving icon rendering across environments; FN-3035 tightens insight tool type definitions and adds corresponding tests. The CLI extension gains new tools

Fusion-Task-Id: FN-3039

.changeset/fn-3039-terminal-nerdfont-refinement.md

@@ -0,0 +1,5 @@
+---
+"@runfusion/fusion": patch
+---
+
+Ship a bundled Nerd Font symbols fallback for the dashboard terminal so patched glyphs render even when users do not have a local Nerd Font installed. The dashboard now preloads `/fonts/SymbolsNerdFontMono-Regular.ttf`, applies it first in the xterm font stack, and includes build-output regression checks for the bundled font artifact and preload reference.

packages/dashboard/README.md

@@ -252,7 +252,7 @@ Access a fully functional PTY (pseudo-terminal) shell directly from the dashboar
 - **Real PTY Terminal**: Spawns a real shell (bash/zsh/powershell) using node-pty for authentic terminal behavior
 - **Bidirectional Communication**: WebSocket connection for instant input/output
 - **xterm.js Integration**: Full terminal emulation with proper ANSI support, colors, and cursor handling
-- **Nerd Font-preferred rendering**: The terminal prefers a Nerd Font-capable monospace stack (`MesloLGS NF`, `JetBrainsMono Nerd Font`, `FiraCode Nerd Font`, etc.) with standard monospace fallbacks so powerline/private-use prompt glyphs render correctly when patched fonts are installed
+- **Bundled Nerd Font glyph fallback**: The terminal now ships a bundled Nerd Font symbols asset (`/fonts/SymbolsNerdFontMono-Regular.ttf`) and preloads it for deterministic powerline/private-use glyph rendering, while still keeping the existing Nerd Font-preferred monospace stack (`MesloLGS NF`, `JetBrainsMono Nerd Font`, `FiraCode Nerd Font`, etc.) plus standard monospace fallbacks for normal text metrics.
 - **Auto-resizing**: Terminal automatically fits to container size
 - **Scrollback Buffer**: 5KB of scrollback history with replay on reconnect
 - **Reconnection Support**: Automatic reconnect with exponential backoff if connection drops

packages/dashboard/app/__tests__/build-output.test.ts

@@ -31,4 +31,17 @@ describe("mobile build output chunking", () => {
     expect(indexHtml).toMatch(/assets\/vendor-react-[A-Za-z0-9_-]+\.js/);
     expect(indexHtml).toMatch(/assets\/vendor-xterm-[A-Za-z0-9_-]+\.js/);
   });
+
+  test("ships Nerd Font symbol fallback asset and preloads it in dist index", () => {
+    const bundledFontPath = resolve(
+      dashboardClientDistDir,
+      "fonts",
+      "SymbolsNerdFontMono-Regular.ttf",
+    );
+    const indexHtml = readFileSync(resolve(dashboardClientDistDir, "index.html"), "utf8");
+
+    expect(() => readFileSync(bundledFontPath)).not.toThrow();
+    expect(indexHtml).toContain('/fonts/SymbolsNerdFontMono-Regular.ttf');
+    expect(indexHtml).toContain('rel="preload"');
+  });
 });

packages/dashboard/app/components/TerminalModal.css

@@ -1,3 +1,9 @@
+@font-face {
+  font-family: "Fusion Terminal Nerd Font Symbols";
+  src: url("/fonts/SymbolsNerdFontMono-Regular.ttf") format("truetype");
+  font-display: swap;
+}
+
 /* === Terminal Modal === */
 /* Center vertically (override the overlay's default top alignment). */
 .modal-overlay:has(.terminal-modal) {

packages/dashboard/app/components/TerminalModal.tsx

@@ -28,7 +28,7 @@ const DEFAULT_FONT_SIZE = 14;
 const MIN_TERMINAL_FONT_SIZE = 8;
 const MAX_TERMINAL_FONT_SIZE = 32;
 const XTERM_FONT_FAMILY =
-  '"MesloLGS NF", "MesloLGM Nerd Font", "JetBrainsMono Nerd Font", "FiraCode Nerd Font", "Hack Nerd Font", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace';
+  '"Fusion Terminal Nerd Font Symbols", "MesloLGS NF", "MesloLGM Nerd Font", "JetBrainsMono Nerd Font", "FiraCode Nerd Font", "Hack Nerd Font", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace';
 
 export function ctrlChar(key: string): string {
   if (!key) {

packages/dashboard/app/components/__tests__/TerminalModal.test.tsx

@@ -563,7 +563,7 @@ describe("TerminalModal", () => {
     expect(Terminal).toHaveBeenCalledWith(
       expect.objectContaining({
         fontFamily:
-          '"MesloLGS NF", "MesloLGM Nerd Font", "JetBrainsMono Nerd Font", "FiraCode Nerd Font", "Hack Nerd Font", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace',
+          '"Fusion Terminal Nerd Font Symbols", "MesloLGS NF", "MesloLGM Nerd Font", "JetBrainsMono Nerd Font", "FiraCode Nerd Font", "Hack Nerd Font", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace',
       }),
     );
     expect(screen.getByTestId("terminal-font-size-value").textContent).toBe("14px");

packages/dashboard/app/index.html

@@ -7,6 +7,13 @@
     <title>Fusion</title>
     <link rel="icon" type="image/svg+xml" href="/logo.svg" />
     <link rel="manifest" href="/manifest.json" />
+    <link
+      rel="preload"
+      href="/fonts/SymbolsNerdFontMono-Regular.ttf"
+      as="font"
+      type="font/ttf"
+      crossorigin
+    />
     <meta name="theme-color" content="#1a1a2e" />
     <meta name="apple-mobile-web-app-capable" content="yes" />
     <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />