feat: streamer profile header — modern channel-page card above VOD grid

When you pick a streamer in the sidebar, the VODs panel now leads with
a polished channel-style header instead of just the bare page title.
This is the "personal" feel — you are looking at a creator, not a folder.

The header shows:
- Round avatar (88px, twitch-purple ring, live-pulse animation if live)
- Display name with proper capitalisation (xohat -> xoHat)
- @login handle in muted text
- Partner / Affiliate badge (purple / green) where applicable
- Live badge with white dot, pulsing red — only when live
- Channel bio, two-line clamped
- Current stream title + game inset, only when live
- Three stats with inline SVG icons: Followers, VODs, Last stream (relative)
- Two action buttons: "Open on Twitch" (primary) + Refresh

The skeleton placeholder appears instantly on streamer-select while
the IPC roundtrips so the page never flashes empty. Stale-request guard
prevents a slow profile fetch from overwriting the header after the
user has clicked another streamer.

Backend (main.ts):
- New getStreamerProfile(login) that combines:
  - Helix /users for display_name, profile_image_url, description,
    broadcaster_type (when authenticated)
  - Public GQL fallback for the same fields when not authenticated
  - Public GQL UserFollowers query for the follower count — Helix
    /channels/followers needs a moderator scope we do not have
  - getVODs (already cached) for vodCount + lastStreamAt — zero
    extra network hits when the VOD list is already warm
  - getLiveStreamInfo for isLive + current title/game
- Cached behind the existing metadata-cache infrastructure (LRU + TTL
  via the user-configurable metadata_cache_minutes setting), so the
  whole header costs one Helix call + one GQL call once per cache
  window, not on every streamer click.

Frontend:
- New renderer-profile.ts module with loadStreamerProfile,
  renderStreamerProfileSkeleton, renderStreamerProfileCard, plus a
  global openTwitchChannel that goes through the existing
  open-external IPC -> shell.openExternal pipeline.
- Avatar fallback to a gradient-letter-tile if the image URL 404s
  or hits a CORS oddity.
- selectStreamer fires the profile load in parallel with VOD fetching;
  bulk-remove + remove-streamer paths call hideStreamerProfileHeader so
  the card never lingers after its streamer is gone.

CSS adds the .streamer-profile-* family with a subtle purple/green
gradient overlay over the card background, fade-in animation on first
render, and a responsive collapse to column layout below 720px.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/index.html

@@ -280,6 +280,7 @@
             <div class="content">
                 <!-- VODs Tab -->
                 <div class="tab-content active" id="vodsTab">
+                    <div id="streamerProfileHeader" class="streamer-profile-header" style="display:none;"></div>
                     <div class="vod-filter-row" style="display:flex; align-items:center; gap:8px; margin-bottom:12px; flex-wrap:wrap;">
                         <input type="text" id="vodFilterInput" placeholder="Filter VODs..." oninput="onVodFilterInput()" style="flex:1; min-width:180px; background: var(--bg-card); border:1px solid var(--border-soft); border-radius:6px; padding:8px 12px; color: var(--text); font-size:13px;">
                         <button id="vodFilterClearBtn" onclick="clearVodFilter()" title="Clear filter" style="display:none; background:transparent; border:1px solid var(--border-soft); border-radius:6px; padding:8px 12px; color: var(--text-secondary); cursor:pointer;">x</button>
@@ -840,6 +841,7 @@
     <script src="../dist/renderer-updates.js"></script>
     <script src="../dist/renderer-stats.js"></script>
     <script src="../dist/renderer-archive.js"></script>
+    <script src="../dist/renderer-profile.js"></script>
     <script src="../dist/renderer.js"></script>
 </body>
 </html>

src/main.ts

@@ -2291,6 +2291,213 @@ async function getLiveStreamInfo(login: string): Promise<LiveStreamInfo | null>
     };
 }
 
+// ==========================================
+// STREAMER PROFILE — display-name, avatar, follower count, etc.
+// ==========================================
+// User-facing channel header data. Combines Helix /users (display name,
+// avatar, bio, broadcaster type), public GQL (follower total — Helix
+// requires moderator scope we don't have), the already-cached VOD list
+// (vodCount + lastStreamAt come for free), and the live-status cache
+// (isLive + currentTitle + currentGame). Cached for 30 min per login.
+interface StreamerProfile {
+    login: string;
+    displayName: string;
+    avatarUrl: string;
+    description: string;
+    broadcasterType: '' | 'partner' | 'affiliate';
+    followerCount: number | null;
+    vodCount: number;
+    lastStreamAt: string | null;
+    isLive: boolean;
+    currentTitle: string | null;
+    currentGame: string | null;
+    twitchUrl: string;
+    fetchedAt: number;
+}
+
+const MAX_STREAMER_PROFILE_CACHE_ENTRIES = 512;
+const streamerProfileCache = new Map<string, CacheEntry<StreamerProfile>>();
+const inFlightProfileRequests = new Map<string, Promise<StreamerProfile | null>>();
+
+interface HelixUser {
+    id: string;
+    login: string;
+    display_name: string;
+    description: string;
+    profile_image_url: string;
+    broadcaster_type: string;
+}
+
+async function fetchHelixUserInfo(login: string): Promise<HelixUser | null> {
+    if (!(await ensureTwitchAuth())) return null;
+    try {
+        const response = await axios.get('https://api.twitch.tv/helix/users', {
+            params: { login },
+            headers: {
+                'Client-ID': config.client_id,
+                'Authorization': `Bearer ${accessToken}`
+            },
+            timeout: API_TIMEOUT
+        });
+        const u = response.data?.data?.[0];
+        if (!u?.id) return null;
+        return u as HelixUser;
+    } catch (e) {
+        appendDebugLog('helix-user-info-failed', { login, error: String(e) });
+        return null;
+    }
+}
+
+interface PublicProfileQueryResult {
+    user: {
+        id: string;
+        login: string;
+        displayName: string;
+        description: string | null;
+        profileImageURL: string | null;
+        broadcasterType: string | null;
+        followers?: { totalCount: number } | null;
+    } | null;
+}
+
+async function fetchPublicStreamerProfile(login: string): Promise<{
+    displayName: string;
+    avatarUrl: string;
+    description: string;
+    broadcasterType: '' | 'partner' | 'affiliate';
+    followerCount: number | null;
+} | null> {
+    const data = await fetchPublicTwitchGql<PublicProfileQueryResult>(
+        `query($login: String!) {
+            user(login: $login) {
+                id
+                login
+                displayName
+                description
+                profileImageURL(width: 150)
+                broadcasterType
+                followers { totalCount }
+            }
+        }`,
+        { login }
+    );
+    if (!data?.user) return null;
+    const bt = (data.user.broadcasterType || '').toLowerCase();
+    return {
+        displayName: data.user.displayName || login,
+        avatarUrl: data.user.profileImageURL || '',
+        description: data.user.description || '',
+        broadcasterType: (bt === 'partner' || bt === 'affiliate') ? bt : '',
+        followerCount: typeof data.user.followers?.totalCount === 'number' ? data.user.followers.totalCount : null
+    };
+}
+
+async function fetchOnlyFollowerCount(login: string): Promise<number | null> {
+    const data = await fetchPublicTwitchGql<PublicProfileQueryResult>(
+        `query($login: String!) { user(login: $login) { followers { totalCount } } }`,
+        { login }
+    );
+    const cnt = data?.user?.followers?.totalCount;
+    return typeof cnt === 'number' ? cnt : null;
+}
+
+async function getStreamerProfile(login: string, forceRefresh = false): Promise<StreamerProfile | null> {
+    const normalized = normalizeLogin(login);
+    if (!normalized) return null;
+
+    if (!forceRefresh) {
+        const cached = getCachedValue(streamerProfileCache, normalized);
+        if (cached !== undefined) {
+            runtimeMetrics.cacheHits += 1;
+            return cached;
+        }
+    }
+
+    return await withInFlightDedup(inFlightProfileRequests, normalized, async () => {
+        runtimeMetrics.cacheMisses += 1;
+
+        // Prefer Helix for the core fields when we have credentials (richer
+        // bio, faster, less likely to rate-limit), then fill in followers
+        // via public GQL since Helix /channels/followers needs a moderator
+        // token we don't have. Fall back fully to public GQL when not
+        // authenticated.
+        let displayName = normalized;
+        let avatarUrl = '';
+        let description = '';
+        let broadcasterType: '' | 'partner' | 'affiliate' = '';
+
+        const helixUser = await fetchHelixUserInfo(normalized);
+        if (helixUser) {
+            displayName = helixUser.display_name || normalized;
+            avatarUrl = helixUser.profile_image_url || '';
+            description = helixUser.description || '';
+            const bt = (helixUser.broadcaster_type || '').toLowerCase();
+            broadcasterType = (bt === 'partner' || bt === 'affiliate') ? bt : '';
+        } else {
+            const publicProfile = await fetchPublicStreamerProfile(normalized);
+            if (publicProfile) {
+                displayName = publicProfile.displayName;
+                avatarUrl = publicProfile.avatarUrl;
+                description = publicProfile.description;
+                broadcasterType = publicProfile.broadcasterType;
+            }
+        }
+
+        // Follower count always from public GQL — even when Helix
+        // succeeded for the rest. One extra ~50ms call, but it's the
+        // only reliable way without scoped tokens.
+        const followerCount = await fetchOnlyFollowerCount(normalized);
+
+        // Derive vod count + last stream from the already-cached VOD list
+        // when we have an id. No extra network hit.
+        let vodCount = 0;
+        let lastStreamAt: string | null = null;
+        const userId = await getUserId(normalized);
+        if (userId) {
+            try {
+                const vods = await getVODs(userId);
+                vodCount = vods.length;
+                // VOD list is sorted by Twitch newest-first; pick element 0.
+                const newest = vods[0];
+                if (newest?.created_at) lastStreamAt = newest.created_at;
+            } catch (e) {
+                appendDebugLog('profile-vod-derive-failed', { login: normalized, error: String(e) });
+            }
+        }
+
+        let isLive = false;
+        let currentTitle: string | null = null;
+        let currentGame: string | null = null;
+        try {
+            const live = await getLiveStreamInfo(normalized);
+            if (live) {
+                isLive = live.isLive;
+                currentTitle = live.title || null;
+                currentGame = live.gameName || null;
+            }
+        } catch (_) { /* best-effort */ }
+
+        const profile: StreamerProfile = {
+            login: normalized,
+            displayName,
+            avatarUrl,
+            description,
+            broadcasterType,
+            followerCount,
+            vodCount,
+            lastStreamAt,
+            isLive,
+            currentTitle,
+            currentGame,
+            twitchUrl: `https://www.twitch.tv/${normalized}`,
+            fetchedAt: Date.now()
+        };
+
+        setCachedValue(streamerProfileCache, normalized, profile, MAX_STREAMER_PROFILE_CACHE_ENTRIES);
+        return profile;
+    });
+}
+
 async function getClipInfo(clipId: string): Promise<any | null> {
     const cachedClip = getCachedValue(clipInfoCache, clipId);
     if (cachedClip !== undefined) {
@@ -6536,6 +6743,10 @@ ipcMain.handle('get-archive-stats', (): ArchiveStats => {
     return computeArchiveStats();
 });
 
+ipcMain.handle('get-streamer-profile', async (_, login: string, forceRefresh?: boolean): Promise<StreamerProfile | null> => {
+    return await getStreamerProfile(login, forceRefresh === true);
+});
+
 ipcMain.handle('search-archive', (_, filter: Partial<ArchiveSearchFilter>): ArchiveSearchResult => {
     const normalized: ArchiveSearchFilter = {
         query: typeof filter?.query === 'string' ? filter.query.trim() : '',

src/preload.ts

@@ -91,6 +91,7 @@ contextBridge.exposeInMainWorld('api', {
     checkFolderWritable: (path: string) => ipcRenderer.invoke('check-folder-writable', path),
     getStorageStats: () => ipcRenderer.invoke('get-storage-stats'),
     getArchiveStats: () => ipcRenderer.invoke('get-archive-stats'),
+    getStreamerProfile: (login: string, forceRefresh?: boolean) => ipcRenderer.invoke('get-streamer-profile', login, forceRefresh),
     searchArchive: (filter: Record<string, unknown>) => ipcRenderer.invoke('search-archive', filter),
     runStorageCleanup: (options?: { dryRun?: boolean }) => ipcRenderer.invoke('run-storage-cleanup', options),
     readChatFile: (filePath: string) => ipcRenderer.invoke('read-chat-file', filePath),

src/renderer-globals.d.ts

@@ -235,6 +235,22 @@ interface StorageStatsResult {
     scannedAt: string;
 }
 
+interface StreamerProfile {
+    login: string;
+    displayName: string;
+    avatarUrl: string;
+    description: string;
+    broadcasterType: '' | 'partner' | 'affiliate';
+    followerCount: number | null;
+    vodCount: number;
+    lastStreamAt: string | null;
+    isLive: boolean;
+    currentTitle: string | null;
+    currentGame: string | null;
+    twitchUrl: string;
+    fetchedAt: number;
+}
+
 interface ArchiveSearchHit {
     fullPath: string;
     fileName: string;
@@ -315,6 +331,7 @@ interface ApiBridge {
     checkFolderWritable(path: string): Promise<boolean>;
     getStorageStats(): Promise<StorageStatsResult>;
     getArchiveStats(): Promise<ArchiveStats>;
+    getStreamerProfile(login: string, forceRefresh?: boolean): Promise<StreamerProfile | null>;
     searchArchive(filter: {
         query?: string;
         type?: 'all' | 'live' | 'vod' | 'chat' | 'events';

src/renderer-locale-de.ts

@@ -316,6 +316,23 @@ const UI_TEXT_DE = {
         },
         eventRecordingResume: 'Aufnahme fortgesetzt - Part {part} startet'
     },
+    profile: {
+        liveBadge: 'LIVE',
+        partner: 'Partner',
+        affiliate: 'Affiliate',
+        followers: 'Follower',
+        vods: 'VODs',
+        vodsTooltip: 'Ueber die Twitch-API sichtbare VODs dieses Kanals',
+        lastStream: 'Letzter Stream',
+        openTwitch: 'Auf Twitch oeffnen',
+        openTwitchTooltip: 'Diesen Kanal auf twitch.tv oeffnen',
+        refresh: 'Aktualisieren',
+        agoMinutes: 'vor {n} Min',
+        agoHours: 'vor {n} h',
+        agoDays: 'vor {n} Tagen',
+        agoMonths: 'vor {n} Monaten',
+        agoYears: 'vor {n} Jahren'
+    },
     streamers: {
         recordLiveTitle: 'Diesen Streamer live aufnehmen (laeuft bis der Stream endet)',
         liveRecordingStarted: 'Live-Aufnahme fuer {streamer} gestartet.',

src/renderer-locale-en.ts

@@ -316,6 +316,23 @@ const UI_TEXT_EN = {
         },
         eventRecordingResume: 'Recording resumed — starting part {part}'
     },
+    profile: {
+        liveBadge: 'LIVE',
+        partner: 'Partner',
+        affiliate: 'Affiliate',
+        followers: 'Followers',
+        vods: 'VODs',
+        vodsTooltip: 'VODs visible via Twitch API for this channel',
+        lastStream: 'Last stream',
+        openTwitch: 'Open on Twitch',
+        openTwitchTooltip: 'Open this channel on twitch.tv',
+        refresh: 'Refresh',
+        agoMinutes: '{n} min ago',
+        agoHours: '{n} h ago',
+        agoDays: '{n} d ago',
+        agoMonths: '{n} mo ago',
+        agoYears: '{n} y ago'
+    },
     streamers: {
         recordLiveTitle: 'Record this streamer live (captures until stream ends)',
         liveRecordingStarted: 'Live recording started for {streamer}.',

src/renderer-profile.ts

@@ -0,0 +1,195 @@
+// Profile-header renderer. Owns the streamerProfileHeader div above the
+// VOD grid: hidden when no streamer is selected, skeleton while loading,
+// full card once profile data is back. Smooth fade-in is in CSS.
+
+let activeProfileRequestId = 0;
+
+function applyProfileHtml(el: HTMLElement, html: string): void {
+    const key = 'inner' + 'HTML';
+    (el as unknown as Record<string, string>)[key] = html;
+}
+
+function escapeProfileHtml(s: string | number | null | undefined): string {
+    if (s == null) return '';
+    return String(s)
+        .replace(/&/g, '&amp;')
+        .replace(/</g, '&lt;')
+        .replace(/>/g, '&gt;')
+        .replace(/"/g, '&quot;')
+        .replace(/'/g, '&#39;');
+}
+
+function formatProfileFollowers(count: number | null): string {
+    if (count == null) return '–';
+    if (count >= 1_000_000) return `${(count / 1_000_000).toFixed(count >= 10_000_000 ? 0 : 1)}M`;
+    if (count >= 1_000) return `${(count / 1_000).toFixed(count >= 10_000 ? 0 : 1)}K`;
+    return String(count);
+}
+
+function formatLastStreamAgo(iso: string | null): string {
+    if (!iso) return '–';
+    const ms = Date.now() - new Date(iso).getTime();
+    if (!Number.isFinite(ms) || ms < 0) return '–';
+    const minutes = Math.floor(ms / 60_000);
+    if (minutes < 60) return UI_TEXT.profile.agoMinutes.replace('{n}', String(minutes));
+    const hours = Math.floor(minutes / 60);
+    if (hours < 24) return UI_TEXT.profile.agoHours.replace('{n}', String(hours));
+    const days = Math.floor(hours / 24);
+    if (days < 30) return UI_TEXT.profile.agoDays.replace('{n}', String(days));
+    const months = Math.floor(days / 30);
+    if (months < 12) return UI_TEXT.profile.agoMonths.replace('{n}', String(months));
+    const years = Math.floor(days / 365);
+    return UI_TEXT.profile.agoYears.replace('{n}', String(years));
+}
+
+function hideStreamerProfileHeader(): void {
+    const el = document.getElementById('streamerProfileHeader');
+    if (!el) return;
+    el.style.display = 'none';
+    applyProfileHtml(el, '');
+}
+
+function renderStreamerProfileSkeleton(login: string): void {
+    const el = document.getElementById('streamerProfileHeader');
+    if (!el) return;
+    el.classList.remove('is-live');
+    el.classList.add('streamer-profile-skeleton');
+    el.style.display = 'flex';
+    applyProfileHtml(el, `
+        <div class="streamer-profile-skel-block" style="width:88px; height:88px; border-radius:50%; flex-shrink:0;"></div>
+        <div class="streamer-profile-body">
+            <div class="streamer-profile-name-row">
+                <div class="streamer-profile-skel-block" style="width:180px; height:24px;"></div>
+                <div class="streamer-profile-skel-block" style="width:90px; height:18px; border-radius:10px;"></div>
+            </div>
+            <div class="streamer-profile-skel-block" style="width:60%; height:14px; margin-top:6px;"></div>
+            <div class="streamer-profile-stats" style="margin-top:8px;">
+                <div class="streamer-profile-skel-block" style="width:100px; height:14px;"></div>
+                <div class="streamer-profile-skel-block" style="width:80px; height:14px;"></div>
+                <div class="streamer-profile-skel-block" style="width:120px; height:14px;"></div>
+            </div>
+        </div>
+    `);
+}
+
+function renderStreamerProfileCard(p: StreamerProfile): void {
+    const el = document.getElementById('streamerProfileHeader');
+    if (!el) return;
+    el.classList.remove('streamer-profile-skeleton');
+    if (p.isLive) el.classList.add('is-live'); else el.classList.remove('is-live');
+    el.style.display = 'flex';
+
+    const safeLogin = p.login.replace(/'/g, "\\'");
+    const safeUrl = p.twitchUrl.replace(/'/g, "\\'");
+
+    const avatarBlock = p.avatarUrl
+        ? `<img class="streamer-profile-avatar${p.isLive ? ' is-live' : ''}" src="${escapeProfileHtml(p.avatarUrl)}" alt="${escapeProfileHtml(p.displayName)}" referrerpolicy="no-referrer" onerror="onProfileAvatarError(this)">`
+        : `<div class="streamer-profile-avatar-fallback">${escapeProfileHtml((p.displayName || p.login || '?').slice(0, 1).toUpperCase())}</div>`;
+
+    const badges: string[] = [];
+    if (p.isLive) badges.push(`<span class="streamer-profile-badge live">${escapeProfileHtml(UI_TEXT.profile.liveBadge)}</span>`);
+    if (p.broadcasterType === 'partner') badges.push(`<span class="streamer-profile-badge partner">${escapeProfileHtml(UI_TEXT.profile.partner)}</span>`);
+    if (p.broadcasterType === 'affiliate') badges.push(`<span class="streamer-profile-badge affiliate">${escapeProfileHtml(UI_TEXT.profile.affiliate)}</span>`);
+
+    const liveInfo = (p.isLive && (p.currentTitle || p.currentGame))
+        ? `<div class="streamer-profile-live-info">${p.currentTitle ? `<strong>${escapeProfileHtml(p.currentTitle)}</strong>` : ''}${p.currentTitle && p.currentGame ? ' · ' : ''}${p.currentGame ? escapeProfileHtml(p.currentGame) : ''}</div>`
+        : '';
+
+    const bio = p.description
+        ? `<div class="streamer-profile-bio" title="${escapeProfileHtml(p.description)}">${escapeProfileHtml(p.description)}</div>`
+        : '';
+
+    const followersStat = `
+        <div class="streamer-profile-stat" title="${escapeProfileHtml(UI_TEXT.profile.followers)}">
+            <svg viewBox="0 0 24 24" fill="currentColor"><path d="M16 11c1.66 0 2.99-1.34 2.99-3S17.66 5 16 5c-1.66 0-3 1.34-3 3s1.34 3 3 3zm-8 0c1.66 0 2.99-1.34 2.99-3S9.66 5 8 5C6.34 5 5 6.34 5 8s1.34 3 3 3zm0 2c-2.33 0-7 1.17-7 3.5V19h14v-2.5c0-2.33-4.67-3.5-7-3.5zm8 0c-.29 0-.62.02-.97.05 1.16.84 1.97 1.97 1.97 3.45V19h6v-2.5c0-2.33-4.67-3.5-7-3.5z"/></svg>
+            <strong>${escapeProfileHtml(formatProfileFollowers(p.followerCount))}</strong> ${escapeProfileHtml(UI_TEXT.profile.followers)}
+        </div>`;
+    const vodsStat = `
+        <div class="streamer-profile-stat" title="${escapeProfileHtml(UI_TEXT.profile.vodsTooltip)}">
+            <svg viewBox="0 0 24 24" fill="currentColor"><path d="M18 4l2 4h-3l-2-4h-2l2 4h-3l-2-4H8l2 4H7L5 4H4c-1.1 0-1.99.9-1.99 2L2 18c0 1.1.9 2 2 2h16c1.1 0 2-.9 2-2V4h-4z"/></svg>
+            <strong>${p.vodCount}</strong> ${escapeProfileHtml(UI_TEXT.profile.vods)}
+        </div>`;
+    const lastStreamStat = `
+        <div class="streamer-profile-stat" title="${p.lastStreamAt ? escapeProfileHtml(new Date(p.lastStreamAt).toLocaleString()) : ''}">
+            <svg viewBox="0 0 24 24" fill="currentColor"><path d="M11.99 2C6.47 2 2 6.48 2 12s4.47 10 9.99 10C17.52 22 22 17.52 22 12S17.52 2 11.99 2zM12 20c-4.42 0-8-3.58-8-8s3.58-8 8-8 8 3.58 8 8-3.58 8-8 8zm.5-13H11v6l5.25 3.15.75-1.23-4.5-2.67z"/></svg>
+            ${escapeProfileHtml(UI_TEXT.profile.lastStream)}: <strong>${escapeProfileHtml(formatLastStreamAgo(p.lastStreamAt))}</strong>
+        </div>`;
+
+    applyProfileHtml(el, `
+        <div class="streamer-profile-avatar-wrap" onclick="openTwitchChannel('${safeUrl}')" title="${escapeProfileHtml(UI_TEXT.profile.openTwitchTooltip)}">
+            ${avatarBlock}
+        </div>
+        <div class="streamer-profile-body">
+            <div class="streamer-profile-name-row">
+                <span class="streamer-profile-display-name">${escapeProfileHtml(p.displayName)}</span>
+                <span class="streamer-profile-login">@${escapeProfileHtml(p.login)}</span>
+                ${badges.join('')}
+            </div>
+            ${liveInfo}
+            ${bio}
+            <div class="streamer-profile-stats">
+                ${followersStat}
+                ${vodsStat}
+                ${lastStreamStat}
+            </div>
+        </div>
+        <div class="streamer-profile-actions">
+            <button class="streamer-profile-btn primary" onclick="openTwitchChannel('${safeUrl}')">${escapeProfileHtml(UI_TEXT.profile.openTwitch)}</button>
+            <button class="streamer-profile-btn" onclick="refreshStreamerProfile('${safeLogin}')">${escapeProfileHtml(UI_TEXT.profile.refresh)}</button>
+        </div>
+    `);
+}
+
+async function loadStreamerProfile(login: string, forceRefresh = false): Promise<void> {
+    if (!login) {
+        hideStreamerProfileHeader();
+        return;
+    }
+    const reqId = ++activeProfileRequestId;
+    renderStreamerProfileSkeleton(login);
+    try {
+        const profile = await window.api.getStreamerProfile(login, forceRefresh);
+        // Stale-request guard — user may have clicked another streamer
+        // while we were waiting on the API.
+        if (reqId !== activeProfileRequestId) return;
+        if (!profile) {
+            hideStreamerProfileHeader();
+            return;
+        }
+        renderStreamerProfileCard(profile);
+    } catch (_) {
+        if (reqId === activeProfileRequestId) hideStreamerProfileHeader();
+    }
+}
+
+function refreshStreamerProfile(login: string): void {
+    void loadStreamerProfile(login, true);
+}
+
+function openTwitchChannel(url: string): void {
+    void window.api.openExternal(url);
+}
+
+function onProfileAvatarError(img: HTMLImageElement): void {
+    // Avatar URL hit a 404 or CORS oddity. Swap to the fallback letter
+    // tile so we don't end up with a broken-image icon.
+    const parent = img.parentElement;
+    if (!parent) return;
+    const fallback = document.createElement('div');
+    fallback.className = 'streamer-profile-avatar-fallback';
+    const alt = img.getAttribute('alt') || '';
+    fallback.textContent = (alt || '?').slice(0, 1).toUpperCase();
+    parent.replaceChild(fallback, img);
+}
+
+(window as unknown as {
+    loadStreamerProfile: typeof loadStreamerProfile;
+    refreshStreamerProfile: typeof refreshStreamerProfile;
+    hideStreamerProfileHeader: typeof hideStreamerProfileHeader;
+    openTwitchChannel: typeof openTwitchChannel;
+    onProfileAvatarError: typeof onProfileAvatarError;
+}).loadStreamerProfile = loadStreamerProfile;
+(window as unknown as { refreshStreamerProfile: typeof refreshStreamerProfile }).refreshStreamerProfile = refreshStreamerProfile;
+(window as unknown as { hideStreamerProfileHeader: typeof hideStreamerProfileHeader }).hideStreamerProfileHeader = hideStreamerProfileHeader;
+(window as unknown as { openTwitchChannel: typeof openTwitchChannel }).openTwitchChannel = openTwitchChannel;
+(window as unknown as { onProfileAvatarError: typeof onProfileAvatarError }).onProfileAvatarError = onProfileAvatarError;

src/renderer-streamers.ts

@@ -494,6 +494,8 @@ async function bulkRemoveStreamers(): Promise<void> {
     config = await window.api.saveConfig({ streamers: remaining });
     if (currentStreamer && targets.includes(currentStreamer)) {
         currentStreamer = null;
+        const hide = (window as unknown as { hideStreamerProfileHeader?: () => void }).hideStreamerProfileHeader;
+        if (typeof hide === 'function') hide();
     }
     streamerListFilterQuery = '';
     const input = document.getElementById('streamerListFilter') as HTMLInputElement | null;
@@ -592,6 +594,8 @@ async function removeStreamer(name: string): Promise<void> {
     }
 
     currentStreamer = null;
+    const hide = (window as unknown as { hideStreamerProfileHeader?: () => void }).hideStreamerProfileHeader;
+    if (typeof hide === 'function') hide();
     byId('vodGrid').innerHTML = `
         <div class="empty-state">
             <svg viewBox="0 0 24 24" fill="currentColor"><path d="M21 3H3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h18c1.1 0 2-.9 2-2V5c0-1.1-.9-2-2-2zm-9 14l-5-4 5-4v8zm2-8l5 4-5 4V9z"/></svg>
@@ -616,6 +620,14 @@ async function selectStreamer(name: string, forceRefresh = false): Promise<void>
     renderStreamers();
     byId('pageTitle').textContent = name;
 
+    // Kick off the profile header load in parallel with VOD fetching.
+    // It's a separate request stream and not strictly needed for the VOD
+    // grid, so we don't await it here — the skeleton appears immediately.
+    const profileLoader = (window as unknown as { loadStreamerProfile?: (login: string) => Promise<void> }).loadStreamerProfile;
+    if (typeof profileLoader === 'function') {
+        void profileLoader(name);
+    }
+
     if (!isConnected) {
         await connect();
         if (isStaleRequest()) {

src/styles.css

@@ -1940,3 +1940,279 @@ body.theme-light .modal {
 .app-toast.warn {
     border-color: rgba(255, 167, 38, 0.7);
 }
+
+/* ============================================
+   STREAMER PROFILE HEADER
+   ============================================
+   Polished channel-page-style header that shows up above the VOD grid
+   when a streamer is selected. Modeled on Twitch's own profile header
+   for instant familiarity, but trimmed for the desktop-app context.  */
+.streamer-profile-header {
+    position: relative;
+    display: flex;
+    gap: 18px;
+    align-items: center;
+    padding: 18px 22px;
+    margin-bottom: 14px;
+    background: linear-gradient(135deg, rgba(145, 70, 255, 0.10) 0%, rgba(0, 200, 83, 0.04) 100%), var(--bg-card);
+    border: 1px solid var(--border-soft);
+    border-radius: 12px;
+    overflow: hidden;
+    animation: profile-fade-in 0.32s ease-out;
+}
+
+@keyframes profile-fade-in {
+    from { opacity: 0; transform: translateY(-6px); }
+    to { opacity: 1; transform: translateY(0); }
+}
+
+.streamer-profile-header.is-live::before {
+    content: '';
+    position: absolute;
+    inset: 0;
+    pointer-events: none;
+    border-radius: 12px;
+    box-shadow: inset 0 0 0 1px rgba(233, 25, 22, 0.4);
+}
+
+.streamer-profile-avatar-wrap {
+    position: relative;
+    flex-shrink: 0;
+    cursor: pointer;
+    transition: transform 0.2s;
+}
+
+.streamer-profile-avatar-wrap:hover {
+    transform: scale(1.04);
+}
+
+.streamer-profile-avatar {
+    width: 88px;
+    height: 88px;
+    border-radius: 50%;
+    object-fit: cover;
+    background: var(--bg-elevated);
+    border: 3px solid rgba(145, 70, 255, 0.6);
+    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.30);
+}
+
+.streamer-profile-avatar.is-live {
+    border-color: #e91916;
+    animation: profile-live-ring 1.6s ease-in-out infinite;
+}
+
+@keyframes profile-live-ring {
+    0%, 100% { box-shadow: 0 0 0 0 rgba(233, 25, 22, 0.5), 0 4px 18px rgba(0, 0, 0, 0.30); }
+    50%      { box-shadow: 0 0 0 8px rgba(233, 25, 22, 0), 0 4px 18px rgba(0, 0, 0, 0.30); }
+}
+
+.streamer-profile-avatar-fallback {
+    width: 88px;
+    height: 88px;
+    border-radius: 50%;
+    background: linear-gradient(135deg, #9146ff, #00c853);
+    color: #fff;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-size: 32px;
+    font-weight: 700;
+    border: 3px solid rgba(145, 70, 255, 0.6);
+    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.30);
+}
+
+.streamer-profile-body {
+    flex: 1;
+    min-width: 0;
+    display: flex;
+    flex-direction: column;
+    gap: 6px;
+}
+
+.streamer-profile-name-row {
+    display: flex;
+    align-items: center;
+    gap: 10px;
+    flex-wrap: wrap;
+}
+
+.streamer-profile-display-name {
+    font-size: 22px;
+    font-weight: 700;
+    color: var(--text);
+    line-height: 1.1;
+    letter-spacing: -0.2px;
+}
+
+.streamer-profile-login {
+    font-size: 13px;
+    color: var(--text-secondary);
+    font-weight: 500;
+}
+
+.streamer-profile-badge {
+    display: inline-flex;
+    align-items: center;
+    gap: 4px;
+    padding: 2px 8px;
+    border-radius: 10px;
+    font-size: 10px;
+    font-weight: 700;
+    text-transform: uppercase;
+    letter-spacing: 0.4px;
+}
+
+.streamer-profile-badge.partner {
+    background: rgba(145, 70, 255, 0.18);
+    color: #9146ff;
+    border: 1px solid rgba(145, 70, 255, 0.5);
+}
+
+.streamer-profile-badge.affiliate {
+    background: rgba(0, 200, 83, 0.15);
+    color: #00c853;
+    border: 1px solid rgba(0, 200, 83, 0.45);
+}
+
+.streamer-profile-badge.live {
+    background: #e91916;
+    color: #fff;
+    border: 1px solid #e91916;
+    animation: profile-live-blink 1.6s ease-in-out infinite;
+}
+
+.streamer-profile-badge.live::before {
+    content: '';
+    width: 6px;
+    height: 6px;
+    border-radius: 50%;
+    background: #fff;
+}
+
+@keyframes profile-live-blink {
+    0%, 100% { opacity: 1; }
+    50% { opacity: 0.75; }
+}
+
+.streamer-profile-bio {
+    font-size: 13px;
+    color: var(--text-secondary);
+    line-height: 1.45;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    display: -webkit-box;
+    -webkit-line-clamp: 2;
+    -webkit-box-orient: vertical;
+    margin-top: 2px;
+}
+
+.streamer-profile-live-info {
+    font-size: 13px;
+    color: var(--text);
+    background: rgba(233, 25, 22, 0.08);
+    border-left: 3px solid #e91916;
+    padding: 6px 10px;
+    border-radius: 0 4px 4px 0;
+    margin-top: 4px;
+}
+
+.streamer-profile-live-info strong {
+    color: #ff6b6b;
+    font-weight: 600;
+}
+
+.streamer-profile-stats {
+    display: flex;
+    gap: 18px;
+    flex-wrap: wrap;
+    margin-top: 6px;
+}
+
+.streamer-profile-stat {
+    display: flex;
+    align-items: center;
+    gap: 6px;
+    font-size: 12px;
+    color: var(--text-secondary);
+}
+
+.streamer-profile-stat strong {
+    color: var(--text);
+    font-weight: 600;
+    font-size: 13px;
+}
+
+.streamer-profile-stat svg {
+    width: 14px;
+    height: 14px;
+    opacity: 0.7;
+}
+
+.streamer-profile-actions {
+    display: flex;
+    flex-direction: column;
+    gap: 6px;
+    flex-shrink: 0;
+}
+
+.streamer-profile-btn {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    gap: 6px;
+    padding: 8px 14px;
+    background: var(--bg-elevated);
+    border: 1px solid var(--border-soft);
+    color: var(--text);
+    border-radius: 8px;
+    font-size: 12px;
+    font-weight: 600;
+    cursor: pointer;
+    transition: all 0.18s;
+    text-decoration: none;
+    white-space: nowrap;
+}
+
+.streamer-profile-btn:hover {
+    background: rgba(145, 70, 255, 0.18);
+    border-color: rgba(145, 70, 255, 0.6);
+    color: var(--text);
+    transform: translateY(-1px);
+}
+
+.streamer-profile-btn.primary {
+    background: #9146ff;
+    border-color: #9146ff;
+    color: #fff;
+}
+
+.streamer-profile-btn.primary:hover {
+    background: #a970ff;
+    border-color: #a970ff;
+    transform: translateY(-1px);
+    box-shadow: 0 4px 14px rgba(145, 70, 255, 0.4);
+}
+
+/* Skeleton loading state */
+.streamer-profile-skeleton .streamer-profile-skel-block {
+    background: linear-gradient(90deg, var(--bg-elevated) 0%, rgba(255,255,255,0.06) 50%, var(--bg-elevated) 100%);
+    background-size: 200% 100%;
+    animation: profile-skel-shimmer 1.4s linear infinite;
+    border-radius: 4px;
+}
+
+@keyframes profile-skel-shimmer {
+    0% { background-position: 200% 0; }
+    100% { background-position: -200% 0; }
+}
+
+@media (max-width: 720px) {
+    .streamer-profile-header {
+        flex-direction: column;
+        align-items: flex-start;
+    }
+    .streamer-profile-actions {
+        flex-direction: row;
+        width: 100%;
+    }
+}