Ship Hesychia meander logo for rebrand (#30) (#46)

## Summary
Closes #30.

- Replace old infinity brand mark with the cyan Greek-key (meander) Hesychia emblem
- Update web favicons / PWA icons (`public/`), Capacitor source art (`assets/`), and regenerate Android launcher + splash densities
- Wire mark into Header / Header2, Sign In / Sign Up, and Sidenav branding

## Test plan
- [ ] Favicon + apple-touch icon show new mark in browser tab / home screen
- [ ] Header and auth screens show mark + Hesychia wordmark
- [ ] `npm run assets:generate` already run; Android launcher / splash use new art
- [ ] Old infinity artwork no longer present in `assets/` / `public/` brand slotsReviewed-on: #46

llm-fe/ANDROID.md

@@ -50,7 +50,14 @@ Bump both before each store release.
 
 ## Icons / splash
 
-Source art lives in `llm-fe/assets/` (`icon.png`, `splash.png`, `splash-dark.png`). Regenerate Android densities:
+Source art lives in `llm-fe/assets/`:
+- `icon.png` / `splash.png` / `splash-dark.png` — Capacitor inputs (Hesychia meander mark)
+- `logo-source.png` — cropped square master
+- `logo-mark-transparent.png` — circular mark with transparent corners (web / in-app)
+
+In-app UI also imports `src/llm-fe/assets/brand/hesychia-mark.png`.
+
+Regenerate Android densities after changing source art:
 
 ```bash
 npm run assets:generate

llm-fe/src/llm-fe/components/Header/Header.tsx

@@ -7,6 +7,8 @@ import { applyAccessToken, axiosInstance } from '../../../axiosApi';
 import { clearTokens, getRefreshToken } from '../../auth/tokenStorage';
 import MenuIcon from '@mui/icons-material/Menu';
 import { AccountBox, Dashboard, Feedback, Logout } from '@mui/icons-material';
+import Box from '@mui/material/Box';
+import hesychiaMark from '../../assets/brand/hesychia-mark.png';
 
 type HeaderProps = {
   drawerWidth?: number;
@@ -66,9 +68,12 @@ const Header = ({drawerWidth=0, handleDrawerToggle}: HeaderProps): JSX.Element =
           }
           {isLargeScreen ? (
             <>
-            <Typography variant="h6" style={{ flexGrow: 1 }} className='text-white font-weight-bold'>
+            <Box sx={{ display: 'flex', alignItems: 'center', gap: 1, flexGrow: 1 }}>
+              <Box component="img" src={hesychiaMark} alt="" sx={{ width: 28, height: 28, borderRadius: '50%' }} />
+              <Typography variant="h6" className='text-white font-weight-bold'>
                 Hesychia
-          </Typography >
+              </Typography>
+            </Box>
           <Button color="inherit" onClick={handleDashboardClick}>
           Dashboard</Button>
           
@@ -80,9 +85,12 @@ const Header = ({drawerWidth=0, handleDrawerToggle}: HeaderProps): JSX.Element =
         </>
           ) : (
             <>
-            <Typography variant="h6" style={{ flexGrow: 1 }} className='text-white font-weight-bold'>
+            <Box sx={{ display: 'flex', alignItems: 'center', gap: 1, flexGrow: 1 }}>
+              <Box component="img" src={hesychiaMark} alt="" sx={{ width: 28, height: 28, borderRadius: '50%' }} />
+              <Typography variant="h6" className='text-white font-weight-bold'>
                 Hesychia
-          </Typography >
+              </Typography>
+            </Box>
           <IconButton color="inherit" onClick={handleDashboardClick}>
           <Dashboard />
         </IconButton>

llm-fe/src/llm-fe/components/Header2/Header2.tsx

@@ -5,6 +5,7 @@ import { AuthContext } from '../../contexts/AuthContext';
 import { AccountContext } from '../../contexts/AccountContext';
 import { applyAccessToken, axiosInstance } from '../../../axiosApi';
 import { clearTokens, getRefreshToken } from '../../auth/tokenStorage';
+import hesychiaMark from '../../assets/brand/hesychia-mark.png';
 
 const HeaderContainer = styled.header`
   position: absolute;
@@ -22,10 +23,24 @@ const HeaderContainer = styled.header`
 `;
 
 const Logo = styled.div`
+  display: flex;
+  align-items: center;
+  gap: 0.65rem;
+  cursor: pointer;
+`;
+
+const LogoMark = styled.img`
+  width: 2rem;
+  height: 2rem;
+  display: block;
+  border-radius: 50%;
+`;
+
+const LogoWordmark = styled.h4`
+  margin: 0;
   font-size: 1.5rem;
   font-weight: 700;
   color: ${({ theme }) => theme.colors.text};
-  cursor: pointer;
   background: ${({ theme }) => `linear-gradient(135deg, ${theme.main} 0%, ${theme.focus} 100%)`};
   -webkit-background-clip: text;
   -webkit-text-fill-color: transparent;
@@ -150,8 +165,8 @@ const Header2 = ({ absolute = false, light = false, isMini = false }: Header2Pro
   return (
     <HeaderContainer>
       <Logo onClick={() => navigate('/')}>
-        <h4>Hesychia</h4>
-
+        <LogoMark src={hesychiaMark} alt="" />
+        <LogoWordmark>Hesychia</LogoWordmark>
       </Logo>
 
       {/* Desktop Nav */}

llm-fe/src/llm-fe/pages/SignIn/SignIn.tsx

@@ -12,6 +12,7 @@ import SsoButtons, { OAuthProviderFlags } from '../../components/SsoButtons/SsoB
 import { AnalyticsEvents, identifyAccount, trackEvent } from '../../utils/analytics';
 import styled from 'styled-components';
 import * as Yup from 'yup';
+import hesychiaMark from '../../assets/brand/hesychia-mark.png';
 
 // Styled Components
 const PageContainer = styled.div`
@@ -55,6 +56,13 @@ const CardTitle = styled.h2`
   text-align: center;
 `;
 
+const BrandMark = styled.img`
+  width: 4rem;
+  height: 4rem;
+  margin-bottom: 1.25rem;
+  border-radius: 50%;
+`;
+
 const StyledInput = styled.input`
   width: 100%;
   background: rgba(255, 255, 255, 0.05);
@@ -235,6 +243,7 @@ const SignIn = (): JSX.Element => {
             <ParticleBackground />
             <ContentWrapper>
                 <GlassCard>
+                    <BrandMark src={hesychiaMark} alt="Hesychia" />
                     <CardTitle>Sign In</CardTitle>
                     {errorMessage && <ErrorMessage>{errorMessage}</ErrorMessage>}
                     <Formik

llm-fe/src/llm-fe/pages/SignUp/SignUp.tsx

@@ -12,6 +12,7 @@ import SsoButtons, { OAuthProviderFlags } from '../../components/SsoButtons/SsoB
 import { AnalyticsEvents, identifyAccount, trackEvent } from '../../utils/analytics';
 import styled from 'styled-components';
 import * as Yup from 'yup';
+import hesychiaMark from '../../assets/brand/hesychia-mark.png';
 
 const PageContainer = styled.div`
   position: relative;
@@ -54,6 +55,13 @@ const CardTitle = styled.h2`
   text-align: center;
 `;
 
+const BrandMark = styled.img`
+  width: 4rem;
+  height: 4rem;
+  margin-bottom: 1.25rem;
+  border-radius: 50%;
+`;
+
 const CardSubtitle = styled.p`
   color: rgba(255, 255, 255, 0.65);
   text-align: center;
@@ -279,6 +287,7 @@ const SignUp = (): JSX.Element => {
         <ParticleBackground />
         <ContentWrapper>
           <GlassCard>
+            <BrandMark src={hesychiaMark} alt="Hesychia" />
             <CardTitle>Sign Up</CardTitle>
             <CardSubtitle>Loading…</CardSubtitle>
           </GlassCard>
@@ -293,6 +302,7 @@ const SignUp = (): JSX.Element => {
         <ParticleBackground />
         <ContentWrapper>
           <GlassCard>
+            <BrandMark src={hesychiaMark} alt="Hesychia" />
             <CardTitle>Sign Up</CardTitle>
             <ErrorMessage>Self-serve registration is not available right now.</ErrorMessage>
             <NavLink to="/signin/">Already have an account? Sign in</NavLink>
@@ -307,6 +317,7 @@ const SignUp = (): JSX.Element => {
       <ParticleBackground />
       <ContentWrapper>
         <GlassCard>
+          <BrandMark src={hesychiaMark} alt="Hesychia" />
           <CardTitle>Sign Up</CardTitle>
           <CardSubtitle>Create an account, then complete payment on Stripe.</CardSubtitle>
           {errorMessage && <ErrorMessage>{errorMessage}</ErrorMessage>}

llm-fe/src/llm-fe/ui-kit/examples/Sidenav/index.js

@@ -209,7 +209,16 @@ function Sidenav({ color, brand, brandName, routes, ...rest }) {
           </MDTypography>
         </MDBox>
         <MDBox display="flex" alignItems="center">
-          
+          {brand && (
+            <MDBox
+              component="img"
+              src={brand}
+              alt={brandName}
+              width="1.75rem"
+              mr={miniSidenav ? 0 : 1}
+              sx={{ borderRadius: "50%" }}
+            />
+          )}
           <MDBox
             width={!brandName && "100%"}
             sx={(theme) => sidenavLogoLabel(theme, { miniSidenav })}

llm-fe/src/logo.svg

@@ -1 +1,7 @@
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+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 256" role="img" aria-label="Hesychia">
+  <!-- Raster mark is canonical; this SVG is a simple stand-in for CRA default logo.svg -->
+  <circle cx="128" cy="128" r="118" fill="#000"/>
+  <circle cx="128" cy="128" r="70" fill="#75c0c5"/>
+  <circle cx="128" cy="128" r="100" fill="none" stroke="#75c0c5" stroke-width="6"/>
+  <circle cx="128" cy="128" r="88" fill="none" stroke="#75c0c5" stroke-width="14" stroke-dasharray="18 10"/>
+</svg>