diff --git a/src/git/apiHandler.js b/src/git/apiHandler.js
index 1ff0d0e..e2ab8c6 100644
--- a/src/git/apiHandler.js
+++ b/src/git/apiHandler.js
@@ -113,12 +113,23 @@ async function tryRequest(url, token, opts = {}) {
   }
 }
 
-async function createRepoGitHub({ name, token, auto_init = true, license = '', private: isPrivate = false }) {
+async function createRepoGitHub({
+  name,
+  token,
+  auto_init = true,
+  license = '',
+  private: isPrivate = false,
+  description = '',
+  homepage = ''
+}) {
   const body = {
     name,
     private: isPrivate,
     auto_init: auto_init
   };
+
+  if (description) body.description = description;
+  if (homepage) body.homepage = homepage;
   
   // GitHub verwendet 'license_template' statt 'license'
   if (license) {
@@ -160,14 +171,6 @@ async function createRepoGitHub({ name, token, auto_init = true, license = '', p
 async function createRepoGitea({ name, token, url, auto_init = true, license = '', private: isPrivate = false }) {
   const endpoint = normalizeBase(url) + '/api/v1/user/repos';
   
-  console.log('=== createRepoGitea DEBUG ===');
-  console.log('Endpoint:', endpoint);
-  console.log('Token present:', !!token);
-  console.log('Token length:', token ? token.length : 0);
-  console.log('Name:', name);
-  console.log('auto_init:', auto_init);
-  console.log('License:', license);
-  
   // Normalisiere Lizenz zu Großbuchstaben, wenn vorhanden
   const normalizedLicense = license ? license.toUpperCase() : '';
   
@@ -182,14 +185,12 @@ async function createRepoGitea({ name, token, url, auto_init = true, license = '
     body.license = normalizedLicense;
   }
   
-  console.log('Request body:', JSON.stringify(body, null, 2));
-  
+
   try {
     const response = await axiosInstance.post(endpoint, body, {
       headers: { Authorization: `token ${token}` },
       timeout: 15000 // 15 Sekunden Timeout
     });
-    console.log('Success! Status:', response.status);
     return response.data;
   } catch (error) {
     console.error('Error creating repo:', error.response?.status, error.response?.data);
@@ -212,7 +213,6 @@ async function createRepoGitea({ name, token, url, auto_init = true, license = '
           headers: { Authorization: `token ${token}` },
           timeout: 15000
         });
-        console.log('Success without license! Status:', retryResponse.status);
         console.warn(`Hinweis: Repository wurde ohne Lizenz erstellt, da "${normalizedLicense}" nicht verfügbar ist.`);
         return retryResponse.data;
       } catch (retryError) {
@@ -253,13 +253,119 @@ async function createRepoGitea({ name, token, url, auto_init = true, license = '
 }
 
 async function listGiteaRepos({ token, url }) {
-  const endpoint = normalizeBase(url) + '/api/v1/user/repos';
+  const base = normalizeBase(url);
+  const endpoint = `${base}/api/v1/user/repos`;
+
+  const repoKey = (repo) => (
+    repo?.full_name || `${repo?.owner?.login || repo?.owner?.username || ''}/${repo?.name || ''}`
+  );
+
+  const fetchAllPages = async (extraParams = {}) => {
+    const perPage = 100;
+    const maxPages = 50;
+    const all = [];
+
+    for (let page = 1; page <= maxPages; page += 1) {
+      const response = await axiosInstance.get(endpoint, {
+        headers: {
+          Authorization: `token ${token}`,
+          'User-Agent': 'Git-Manager-GUI'
+        },
+        params: {
+          page,
+          limit: perPage,
+          ...extraParams
+        },
+        timeout: 15000
+      });
+
+      const repos = Array.isArray(response.data) ? response.data : [];
+      all.push(...repos);
+      if (repos.length < perPage) break;
+    }
+
+    return all;
+  };
+
+  // Manche Gitea-Versionen liefern mit mode=all explizit auch private/collab Repos.
+  let repos = [];
+  try {
+    repos = await fetchAllPages({ mode: 'all', affiliation: 'owner,collaborator,organization_member' });
+  } catch (_) {
+    repos = await fetchAllPages({ affiliation: 'owner,collaborator,organization_member' });
+  }
+
+  // Fallback: private separat abfragen und mergen, falls der erste Abruf sie nicht enthielt.
+  if (!repos.some(r => !!r?.private)) {
+    try {
+      const privateRepos = await fetchAllPages({ mode: 'private' });
+      const byKey = new Map();
+      for (const repo of repos) {
+        const key = repoKey(repo);
+        byKey.set(key, repo);
+      }
+      for (const repo of privateRepos) {
+        const key = repoKey(repo);
+        if (!byKey.has(key)) byKey.set(key, repo);
+      }
+      repos = Array.from(byKey.values());
+    } catch (_) {
+      // ignorieren: nicht jede Gitea-Version unterstützt mode=private
+    }
+  }
+
+
+  return repos;
+}
+
+async function getGiteaCurrentUser({ token, url }) {
+  const endpoint = normalizeBase(url) + '/api/v1/user';
   const response = await axiosInstance.get(endpoint, {
-    headers: { Authorization: `token ${token}` }
+    headers: {
+      Authorization: `token ${token}`,
+      'User-Agent': 'Git-Manager-GUI'
+    },
+    timeout: 10000
   });
   return response.data;
 }
 
+async function listGiteaTopicsCatalog({ token, url, maxPages = 20, perPage = 100 }) {
+  const base = normalizeBase(url);
+  if (!base) throw new Error('Invalid Gitea base URL');
+
+  const topics = new Set();
+  let page = 1;
+
+  while (page <= Math.max(1, maxPages)) {
+    const response = await axiosInstance.get(`${base}/api/v1/user/repos`, {
+      headers: {
+        Authorization: `token ${token}`,
+        'User-Agent': 'Git-Manager-GUI'
+      },
+      params: {
+        page,
+        limit: perPage
+      },
+      timeout: 15000
+    });
+
+    const repos = Array.isArray(response.data) ? response.data : [];
+    for (const repo of repos) {
+      const repoTopics = Array.isArray(repo?.topics) ? repo.topics : [];
+      for (const t of repoTopics) {
+        const s = String(t || '').trim();
+        if (s) topics.add(s);
+      }
+    }
+
+    if (repos.length < perPage) break;
+    page += 1;
+  }
+
+  return Array.from(topics).sort((a, b) => a.localeCompare(b, 'de'));
+}
+
 function toDateKey(value) {
   if (value == null) return null;
 
@@ -1058,11 +1164,766 @@ async function deleteReleaseAsset({ token, url, owner, repo, assetId }) {
   }
 }
 
+async function migrateRepoToGitea({ token, url, cloneUrl, repoName, description, isPrivate, authToken, authUsername }) {
+  const base = normalizeAndValidateBaseUrl(url);
+  const body = {
+    clone_addr:   cloneUrl,
+    repo_name:    repoName,
+    description:  description || '',
+    private:      isPrivate || false,
+    issues:       true,
+    labels:       true,
+    milestones:   true,
+    releases:     true,
+    wiki:         true,
+    pull_requests: true
+  };
+  // Optionale Auth für private Source-Repos (z.B. GitHub-Token)
+  if (authUsername) body.auth_username = authUsername;
+  if (authToken)    body.auth_token    = authToken;
+
+  const res = await axiosInstance.post(
+    `${base}/api/v1/repos/migrate`,
+    body,
+    {
+      headers: {
+        Authorization: `token ${token}`,
+        'Content-Type': 'application/json',
+        'User-Agent': 'Git-Manager-GUI'
+      },
+      timeout: 60000
+    }
+  );
+  return res.data;
+}
+
+async function updateGiteaRepoAvatar({ token, url, owner, repo, imageBase64 }) {
+  const base = normalizeAndValidateBaseUrl(url);
+  const pureBase64 = imageBase64.replace(/^data:[^;]+;base64,/, '');
+  await axiosInstance.post(
+    `${base}/api/v1/repos/${encodeURIComponent(owner)}/${encodeURIComponent(repo)}/avatar`,
+    { image: pureBase64 },
+    {
+      headers: {
+        Authorization: `token ${token}`,
+        'Content-Type': 'application/json',
+        'User-Agent': 'Git-Manager-GUI'
+      },
+      timeout: 15000
+    }
+  );
+}
+
+async function updateGiteaRepoVisibility({ token, url, owner, repo, isPrivate }) {
+  const base = normalizeAndValidateBaseUrl(url);
+  const endpoint = `${base}/api/v1/repos/${encodeURIComponent(owner)}/${encodeURIComponent(repo)}`;
+  const res = await axiosInstance.patch(
+    endpoint,
+    { private: !!isPrivate },
+    {
+      headers: {
+        Authorization: `token ${token}`,
+        'Content-Type': 'application/json',
+        'User-Agent': 'Git-Manager-GUI'
+      },
+      timeout: 15000
+    }
+  );
+  return res.data;
+}
+
+async function updateGiteaRepoTopics({ token, url, owner, repo, topics }) {
+  const base = normalizeAndValidateBaseUrl(url);
+  const repoPath = `${encodeURIComponent(owner)}/${encodeURIComponent(repo)}`;
+  const safeTopics = Array.isArray(topics) ? topics : [];
+
+  try {
+    const res = await axiosInstance.put(
+      `${base}/api/v1/repos/${repoPath}/topics`,
+      { topics: safeTopics },
+      {
+        headers: {
+          Authorization: `token ${token}`,
+          'Content-Type': 'application/json',
+          'User-Agent': 'Git-Manager-GUI'
+        },
+        timeout: 15000
+      }
+    );
+    return res.data;
+  } catch (err) {
+    // Fallback fuer aeltere/abweichende Gitea-Versionen
+    const res = await axiosInstance.patch(
+      `${base}/api/v1/repos/${repoPath}`,
+      { topics: safeTopics },
+      {
+        headers: {
+          Authorization: `token ${token}`,
+          'Content-Type': 'application/json',
+          'User-Agent': 'Git-Manager-GUI'
+        },
+        timeout: 15000
+      }
+    );
+    return res.data;
+  }
+}
+
+/* ====================================================
+   GITHUB API FUNCTIONS
+   ==================================================== */
+
+const GITHUB_API = 'https://api.github.com';
+
+function githubHeaders(token) {
+  return {
+    Authorization: `token ${token}`,
+    'User-Agent': 'Git-Manager-GUI',
+    'Accept': 'application/vnd.github+json',
+    'X-GitHub-Api-Version': '2022-11-28'
+  };
+}
+
+function parseGithubLinkHeader(header) {
+  if (!header) return {};
+  const links = {};
+  header.split(',').forEach(part => {
+    const match = part.match(/<([^>]+)>;\s*rel="([^"]+)"/);
+    if (match) links[match[2]] = match[1];
+  });
+  return links;
+}
+
+async function listGithubRepos({ token }) {
+  if (!token) throw new Error('GitHub Token fehlt. Bitte Token in Settings eintragen.');
+  const fetchPaged = async (startUrl) => {
+    const allRepos = [];
+    let nextUrl = startUrl;
+
+    while (nextUrl) {
+      const response = await axiosInstance.get(nextUrl, {
+        headers: githubHeaders(token),
+        timeout: 15000
+      });
+      const repos = Array.isArray(response.data) ? response.data : [];
+      allRepos.push(...repos);
+      const links = parseGithubLinkHeader(response.headers['link']);
+      nextUrl = links.next || null;
+    }
+
+    return allRepos;
+  };
+
+  const primaryUrl = `${GITHUB_API}/user/repos?affiliation=owner,collaborator,organization_member&per_page=100&page=1`;
+  const fallbackUrl = `${GITHUB_API}/user/repos?type=all&per_page=100&page=1`;
+
+  try {
+    return await fetchPaged(primaryUrl);
+  } catch (error) {
+    if (error?.response?.status === 422) {
+      return await fetchPaged(fallbackUrl);
+    }
+    throw error;
+  }
+}
+
+async function getGithubCurrentUser({ token }) {
+  if (!token) throw new Error('GitHub Token fehlt.');
+  const response = await axiosInstance.get(`${GITHUB_API}/user`, {
+    headers: githubHeaders(token),
+    timeout: 10000
+  });
+  return response.data;
+}
+
+async function getGithubUserHeatmap({ token, monthsBack = 20 }) {
+  if (!token) throw new Error('GitHub Token fehlt.');
+
+  const me = await getGithubCurrentUser({ token });
+  const username = me?.login || null;
+  if (!username) throw new Error('GitHub Benutzer konnte nicht ermittelt werden.');
+
+  const to = new Date();
+  const from = new Date(to.getFullYear(), to.getMonth(), to.getDate());
+  from.setMonth(from.getMonth() - Math.max(1, Number(monthsBack) || 20));
+
+  const formatDate = (d) => {
+    const y = d.getFullYear();
+    const m = String(d.getMonth() + 1).padStart(2, '0');
+    const day = String(d.getDate()).padStart(2, '0');
+    return `${y}-${m}-${day}`;
+  };
+
+  const query = `
+    query($login: String!, $from: DateTime!, $to: DateTime!) {
+      user(login: $login) {
+        contributionsCollection(from: $from, to: $to) {
+          contributionCalendar {
+            weeks {
+              contributionDays {
+                date
+                contributionCount
+              }
+            }
+          }
+        }
+      }
+    }
+  `;
+
+  // Primaere Quelle: derselbe Contribution-Calendar-Endpunkt wie im GitHub-Profil.
+  // Das liefert die sichtbar "echten" Daten der Profilansicht.
+  try {
+    const contributionsUrl = `https://github.com/users/${encodeURIComponent(username)}/contributions` +
+      `?from=${encodeURIComponent(formatDate(from))}&to=${encodeURIComponent(formatDate(to))}`;
+    const response = await axiosInstance.get(contributionsUrl, {
+      headers: {
+        'User-Agent': 'Git-Manager-GUI',
+        'Accept': 'text/html,application/xhtml+xml,image/svg+xml'
+      },
+      timeout: 20000
+    });
+
+    const html = typeof response.data === 'string' ? response.data : '';
+    const acc = new Map();
+
+    const dayTags = html.match(/<[^>]*ContributionCalendar-day[^>]*>/gi) || [];
+    const readAttr = (tag, attr) => {
+      const rx = new RegExp(`${attr}\\s*=\\s*(["'])(.*?)\\1`, 'i');
+      const m = tag.match(rx);
+      return m ? m[2] : '';
+    };
+
+    const tooltipCountById = new Map();
+    const tooltipRegex = /<tool-tip\b[^>]*for=(["'])(.*?)\1[^>]*>([\s\S]*?)<\/tool-tip>/gi;
+    let tooltipMatch;
+    while ((tooltipMatch = tooltipRegex.exec(html)) !== null) {
+      const targetId = tooltipMatch[2] || '';
+      const body = String(tooltipMatch[3] || '').replace(/<[^>]*>/g, ' ').replace(/\s+/g, ' ').trim();
+      if (!targetId || !body) continue;
+
+      if (/^No contributions?/i.test(body)) {
+        tooltipCountById.set(targetId, 0);
+        continue;
+      }
+
+      const m = body.match(/(\d+)\s+contributions?/i);
+      if (m) {
+        tooltipCountById.set(targetId, Number(m[1]));
+      }
+    }
+
+    for (const tag of dayTags) {
+      const date = normalizeHeatmapEntryDate(readAttr(tag, 'data-date'));
+      if (!date) continue;
+
+      const id = readAttr(tag, 'id');
+      const level = Number(readAttr(tag, 'data-level'));
+
+      const rawCount = readAttr(tag, 'data-count');
+      const parsedDataCount = rawCount === '' ? Number.NaN : Number(rawCount);
+
+      let count = Number.NaN;
+
+      // 1) Tooltips enthalten i.d.R. den echten Wert aus dem GitHub-Graphen.
+      if (id && tooltipCountById.has(id)) {
+        count = Number(tooltipCountById.get(id));
+      }
+
+      // 2) Fallback auf data-count.
+      if (!Number.isFinite(count) && Number.isFinite(parsedDataCount)) {
+        count = parsedDataCount;
+      }
+
+      if (!Number.isFinite(count)) {
+        const aria = readAttr(tag, 'aria-label');
+        const ariaMatch = aria.match(/(\d+)\s+contributions?/i);
+        if (ariaMatch) {
+          count = Number(ariaMatch[1]);
+        }
+      }
+
+      if (!Number.isFinite(count)) {
+        count = Number.isFinite(level) && level > 0 ? level : 0;
+      }
+
+      // Sicherheitsnetz: manche GitHub-Varianten liefern data-count=0,
+      // obwohl data-level > 0 ist. Dann zumindest Intensitaet als Aktivitaet nutzen.
+      if (Number.isFinite(level) && level > 0 && Number.isFinite(count) && count <= 0) {
+        count = level;
+      }
+
+      const safeCount = Number.isFinite(count) ? Math.max(0, Math.floor(count)) : 0;
+      acc.set(date, safeCount);
+    }
+
+    if (acc.size > 0) {
+      const entries = Array.from(acc.entries())
+        .map(([date, count]) => ({ date, count }))
+        .sort((a, b) => a.date.localeCompare(b.date));
+
+      return {
+        username,
+        endpoint: contributionsUrl,
+        entries
+      };
+    }
+  } catch (_) {
+    // Fallback auf API-basierte Quellen unten.
+  }
+
+  // GitHub GraphQL liefert in der Praxis nur Bereiche bis max. ca. 1 Jahr stabil,
+  // deshalb teilen wir den gewünschten Zeitraum in mehrere Segmente.
+  const ranges = [];
+  let cursorTo = new Date(to);
+  while (cursorTo >= from) {
+    const cursorFrom = new Date(cursorTo.getFullYear() - 1, cursorTo.getMonth(), cursorTo.getDate() + 1);
+    const segmentFrom = cursorFrom < from ? new Date(from) : cursorFrom;
+    ranges.push({ from: segmentFrom, to: new Date(cursorTo) });
+    cursorTo = new Date(segmentFrom);
+    cursorTo.setDate(cursorTo.getDate() - 1);
+  }
+
+  const graphAcc = new Map();
+  let graphOk = false;
+
+  for (const range of ranges) {
+    try {
+      const response = await axiosInstance.post(
+        `${GITHUB_API}/graphql`,
+        {
+          query,
+          variables: {
+            login: username,
+            from: range.from.toISOString(),
+            to: range.to.toISOString()
+          }
+        },
+        {
+          headers: githubHeaders(token),
+          timeout: 20000,
+          validateStatus: () => true
+        }
+      );
+
+      if (!(response.status >= 200 && response.status < 300) || response.data?.errors) {
+        continue;
+      }
+
+      const weeks = response.data?.data?.user?.contributionsCollection?.contributionCalendar?.weeks || [];
+      for (const week of weeks) {
+        const days = week?.contributionDays || [];
+        for (const day of days) {
+          const date = normalizeHeatmapEntryDate(day?.date);
+          if (!date) continue;
+          const count = Number(day?.contributionCount || 0);
+          const n = Number.isFinite(count) ? Math.max(0, Math.floor(count)) : 0;
+          graphAcc.set(date, (graphAcc.get(date) || 0) + n);
+        }
+      }
+
+      graphOk = true;
+    } catch (_) {
+      // probiere naechstes Segment
+    }
+  }
+
+  if (graphOk && graphAcc.size > 0) {
+    const entries = Array.from(graphAcc.entries())
+      .map(([date, count]) => ({ date, count }))
+      .sort((a, b) => a.date.localeCompare(b.date));
+
+    return {
+      username,
+      endpoint: `${GITHUB_API}/graphql (chunked)`,
+      entries
+    };
+  }
+
+  try {
+    let nextUrl = `${GITHUB_API}/users/${encodeURIComponent(username)}/events?per_page=100&page=1`;
+    let pageCount = 0;
+    const acc = new Map();
+
+    while (nextUrl && pageCount < 10) {
+      const response = await axiosInstance.get(nextUrl, {
+        headers: githubHeaders(token),
+        timeout: 15000
+      });
+
+      const events = Array.isArray(response.data) ? response.data : [];
+      for (const ev of events) {
+        const date = normalizeHeatmapEntryDate(ev?.created_at);
+        if (!date) continue;
+        acc.set(date, (acc.get(date) || 0) + 1);
+      }
+
+      const links = parseGithubLinkHeader(response.headers?.link);
+      nextUrl = links.next || null;
+      pageCount += 1;
+    }
+
+    if (acc.size > 0) {
+      const entries = Array.from(acc.entries())
+        .map(([date, count]) => ({ date, count }))
+        .sort((a, b) => a.date.localeCompare(b.date));
+
+      return {
+        username,
+        endpoint: `${GITHUB_API}/users/${encodeURIComponent(username)}/events`,
+        entries
+      };
+    }
+  } catch (_) {
+    // letztes Fallback unten
+  }
+
+  return {
+    username,
+    endpoint: 'none',
+    entries: []
+  };
+}
+
+async function getGithubRepoContents({ token, owner, repo, path = '', ref = 'HEAD' }) {
+  const refParam = (ref && ref !== 'HEAD') ? `?ref=${encodeURIComponent(ref)}` : '';
+  const safePath = path ? path.split('/').map(encodeURIComponent).join('/') : '';
+  const endpoint = `${GITHUB_API}/repos/${encodeURIComponent(owner)}/${encodeURIComponent(repo)}/contents/${safePath}${refParam}`;
+
+  try {
+    const response = await axiosInstance.get(endpoint, {
+      headers: githubHeaders(token),
+      timeout: 15000
+    });
+    const payload = response.data;
+    if (Array.isArray(payload)) {
+      return {
+        ok: true,
+        items: payload.map(item => ({
+          name: item.name,
+          path: item.path,
+          type: item.type === 'dir' ? 'dir' : 'file',
+          size: item.size || 0,
+          download_url: item.download_url || null,
+          sha: item.sha || null
+        }))
+      };
+    }
+    return {
+      ok: true,
+      items: [{
+        name: payload.name,
+        path: payload.path,
+        type: payload.type === 'dir' ? 'dir' : 'file',
+        size: payload.size || 0,
+        download_url: payload.download_url || null,
+        sha: payload.sha || null
+      }]
+    };
+  } catch (err) {
+    if (err.response?.status === 404) {
+      return { ok: true, items: [], empty: true };
+    }
+    throw err;
+  }
+}
+
+async function getGithubFileSha({ token, owner, repo, path, ref = 'HEAD' }) {
+  const refParam = (ref && ref !== 'HEAD') ? `?ref=${encodeURIComponent(ref)}` : '';
+  const safePath = path.split('/').map(encodeURIComponent).join('/');
+  const endpoint = `${GITHUB_API}/repos/${encodeURIComponent(owner)}/${encodeURIComponent(repo)}/contents/${safePath}${refParam}`;
+  try {
+    const response = await axiosInstance.get(endpoint, {
+      headers: githubHeaders(token),
+      timeout: 10000
+    });
+    return response.data?.sha || null;
+  } catch (_) {
+    return null;
+  }
+}
+
+async function getGithubFileContent({ token, owner, repo, path, ref = 'HEAD' }) {
+  const refParam = (ref && ref !== 'HEAD') ? `?ref=${encodeURIComponent(ref)}` : '';
+  const safePath = path.split('/').map(encodeURIComponent).join('/');
+  const endpoint = `${GITHUB_API}/repos/${encodeURIComponent(owner)}/${encodeURIComponent(repo)}/contents/${safePath}${refParam}`;
+
+  const response = await axiosInstance.get(endpoint, {
+    headers: githubHeaders(token),
+    timeout: 15000
+  });
+  const data = response.data;
+  if (data.content) {
+    return Buffer.from(data.content.replace(/\n/g, ''), 'base64').toString('utf8');
+  }
+  if (data.download_url) {
+    const rawRes = await axiosInstance.get(data.download_url, {
+      headers: { Authorization: `token ${token}`, 'User-Agent': 'Git-Manager-GUI' },
+      timeout: 15000
+    });
+    return typeof rawRes.data === 'string' ? rawRes.data : JSON.stringify(rawRes.data, null, 2);
+  }
+  throw new Error('GitHub Dateiinhalt nicht verfügbar.');
+}
+
+async function uploadGithubFile({ token, owner, repo, path, contentBase64, message = 'Upload via Git Manager GUI', branch = 'main' }) {
+  const safePath = path.split('/').map(encodeURIComponent).join('/');
+  const endpoint = `${GITHUB_API}/repos/${encodeURIComponent(owner)}/${encodeURIComponent(repo)}/contents/${safePath}`;
+
+  const sha = await getGithubFileSha({ token, owner, repo, path, ref: branch });
+  const body = { message, content: contentBase64, branch };
+  if (sha) body.sha = sha;
+
+  const response = await axiosInstance.put(endpoint, body, {
+    headers: githubHeaders(token),
+    timeout: 30000
+  });
+  return response.data;
+}
+
+async function deleteGithubFile({ token, owner, repo, path, message = 'Delete via Git Manager GUI', sha, branch = 'main' }) {
+  let fileSha = sha;
+  if (!fileSha) {
+    fileSha = await getGithubFileSha({ token, owner, repo, path, ref: branch });
+  }
+  if (!fileSha) throw new Error(`SHA für Datei nicht gefunden: ${path}`);
+
+  const safePath = path.split('/').map(encodeURIComponent).join('/');
+  const endpoint = `${GITHUB_API}/repos/${encodeURIComponent(owner)}/${encodeURIComponent(repo)}/contents/${safePath}`;
+
+  await axiosInstance.delete(endpoint, {
+    headers: githubHeaders(token),
+    data: { message, sha: fileSha, branch },
+    timeout: 15000
+  });
+  return { ok: true };
+}
+
+async function getGithubCommits({ token, owner, repo, branch = '', page = 1, limit = 50 }) {
+  const params = { per_page: limit, page };
+  if (branch && branch !== 'HEAD') params.sha = branch;
+
+  const response = await axiosInstance.get(
+    `${GITHUB_API}/repos/${encodeURIComponent(owner)}/${encodeURIComponent(repo)}/commits`,
+    { headers: githubHeaders(token), params, timeout: 15000 }
+  );
+  return (response.data || []).map(c => ({
+    sha: c.sha,
+    commit: {
+      message: c.commit?.message || '',
+      author: {
+        name: c.commit?.author?.name || '',
+        email: c.commit?.author?.email || '',
+        date: c.commit?.author?.date || ''
+      },
+      committer: {
+        name: c.commit?.committer?.name || '',
+        date: c.commit?.committer?.date || ''
+      }
+    },
+    author: c.author ? { login: c.author.login, avatar_url: c.author.avatar_url } : null,
+    html_url: c.html_url || ''
+  }));
+}
+
+async function getGithubCommitDiff({ token, owner, repo, sha }) {
+  const response = await axiosInstance.get(
+    `${GITHUB_API}/repos/${encodeURIComponent(owner)}/${encodeURIComponent(repo)}/commits/${sha}`,
+    {
+      headers: { ...githubHeaders(token), 'Accept': 'application/vnd.github.diff' },
+      timeout: 15000
+    }
+  );
+  return response.data;
+}
+
+async function getGithubCommitFiles({ token, owner, repo, sha }) {
+  const response = await axiosInstance.get(
+    `${GITHUB_API}/repos/${encodeURIComponent(owner)}/${encodeURIComponent(repo)}/commits/${sha}`,
+    { headers: githubHeaders(token), timeout: 15000 }
+  );
+  const commit = response.data;
+  const files = (commit.files || []).map(f => ({
+    file: f.filename || '',
+    changes: f.changes || 0,
+    insertions: f.additions || 0,
+    deletions: f.deletions || 0,
+    binary: f.status === 'binary' || false,
+    status: f.status || ''
+  }));
+  return {
+    files,
+    stats: {
+      additions: commit.stats?.additions || 0,
+      deletions: commit.stats?.deletions || 0,
+      total: commit.stats?.total || 0
+    }
+  };
+}
+
+async function searchGithubCommits({ token, owner, repo, query, branch = '' }) {
+  const params = { per_page: 100 };
+  if (branch && branch !== 'HEAD') params.sha = branch;
+  const response = await axiosInstance.get(
+    `${GITHUB_API}/repos/${encodeURIComponent(owner)}/${encodeURIComponent(repo)}/commits`,
+    { headers: githubHeaders(token), params, timeout: 15000 }
+  );
+  const lowerQuery = query.toLowerCase();
+  return (response.data || []).filter(c => {
+    const message = (c.commit?.message || '').toLowerCase();
+    const author = (c.commit?.author?.name || '').toLowerCase();
+    return message.includes(lowerQuery) || author.includes(lowerQuery);
+  }).map(c => ({
+    sha: c.sha,
+    commit: {
+      message: c.commit?.message || '',
+      author: { name: c.commit?.author?.name || '', email: c.commit?.author?.email || '', date: c.commit?.author?.date || '' }
+    },
+    author: c.author ? { login: c.author.login, avatar_url: c.author.avatar_url } : null,
+    html_url: c.html_url || ''
+  }));
+}
+
+async function getGithubBranches({ token, owner, repo }) {
+  const response = await axiosInstance.get(
+    `${GITHUB_API}/repos/${encodeURIComponent(owner)}/${encodeURIComponent(repo)}/branches`,
+    { headers: githubHeaders(token), params: { per_page: 100 }, timeout: 15000 }
+  );
+  return (response.data || []).map(b => ({
+    name: b.name,
+    commit: { id: b.commit?.sha || '', sha: b.commit?.sha || '' },
+    protected: b.protected || false
+  }));
+}
+
+async function listGithubReleases({ token, owner, repo }) {
+  const response = await axiosInstance.get(
+    `${GITHUB_API}/repos/${encodeURIComponent(owner)}/${encodeURIComponent(repo)}/releases`,
+    { headers: githubHeaders(token), params: { per_page: 100 }, timeout: 15000 }
+  );
+  return (response.data || []).map(r => ({
+    id: r.id,
+    tag_name: r.tag_name,
+    name: r.name || r.tag_name,
+    body: r.body || '',
+    draft: r.draft || false,
+    prerelease: r.prerelease || false,
+    created_at: r.created_at,
+    published_at: r.published_at,
+    html_url: r.html_url || '',
+    assets: (r.assets || []).map(a => ({
+      id: a.id,
+      name: a.name,
+      size: a.size,
+      download_count: a.download_count,
+      browser_download_url: a.browser_download_url
+    }))
+  }));
+}
+
+async function createGithubRelease({ token, owner, repo, data }) {
+  const body = {
+    tag_name: data.tag_name,
+    name: data.name || data.tag_name,
+    body: data.body || '',
+    draft: data.draft || false,
+    prerelease: data.prerelease || false,
+    target_commitish: data.target_commitish || 'main'
+  };
+  const response = await axiosInstance.post(
+    `${GITHUB_API}/repos/${encodeURIComponent(owner)}/${encodeURIComponent(repo)}/releases`,
+    body,
+    { headers: githubHeaders(token), timeout: 15000 }
+  );
+  return response.data;
+}
+
+async function editGithubRelease({ token, owner, repo, releaseId, data }) {
+  const body = {};
+  if (data.name !== undefined) body.name = data.name;
+  if (data.body !== undefined) body.body = data.body;
+  if (data.draft !== undefined) body.draft = data.draft;
+  if (data.prerelease !== undefined) body.prerelease = data.prerelease;
+  if (data.tag_name !== undefined) body.tag_name = data.tag_name;
+  const response = await axiosInstance.patch(
+    `${GITHUB_API}/repos/${encodeURIComponent(owner)}/${encodeURIComponent(repo)}/releases/${releaseId}`,
+    body,
+    { headers: githubHeaders(token), timeout: 15000 }
+  );
+  return response.data;
+}
+
+async function deleteGithubRelease({ token, owner, repo, releaseId }) {
+  await axiosInstance.delete(
+    `${GITHUB_API}/repos/${encodeURIComponent(owner)}/${encodeURIComponent(repo)}/releases/${releaseId}`,
+    { headers: githubHeaders(token), timeout: 15000 }
+  );
+  return { ok: true };
+}
+
+async function updateGithubRepoVisibility({ token, owner, repo, isPrivate }) {
+  const response = await axiosInstance.patch(
+    `${GITHUB_API}/repos/${encodeURIComponent(owner)}/${encodeURIComponent(repo)}`,
+    { private: !!isPrivate },
+    { headers: githubHeaders(token), timeout: 15000 }
+  );
+  return response.data;
+}
+
+async function updateGithubRepoTopics({ token, owner, repo, topics }) {
+  const response = await axiosInstance.put(
+    `${GITHUB_API}/repos/${encodeURIComponent(owner)}/${encodeURIComponent(repo)}/topics`,
+    { names: Array.isArray(topics) ? topics : [] },
+    {
+      headers: { ...githubHeaders(token), 'Accept': 'application/vnd.github.mercy-preview+json' },
+      timeout: 15000
+    }
+  );
+  return response.data;
+}
+
+async function deleteGithubRepo({ token, owner, repo }) {
+  await axiosInstance.delete(
+    `${GITHUB_API}/repos/${encodeURIComponent(owner)}/${encodeURIComponent(repo)}`,
+    { headers: githubHeaders(token), timeout: 15000 }
+  );
+  return { ok: true };
+}
+
+/* ====================================================
+   END GITHUB API FUNCTIONS
+   ==================================================== */
+
+async function updateGiteaAvatar({ token, url, imageBase64 }) {
+  const base = normalizeAndValidateBaseUrl(url);
+  // Strip data-URL prefix if present (e.g. "data:image/png;base64,")
+  const pureBase64 = imageBase64.replace(/^data:[^;]+;base64,/, '');
+  await axiosInstance.post(
+    `${base}/api/v1/user/avatar`,
+    { image: pureBase64 },
+    {
+      headers: {
+        Authorization: `token ${token}`,
+        'Content-Type': 'application/json',
+        'User-Agent': 'Git-Manager-GUI'
+      },
+      timeout: 15000
+    }
+  );
+}
+
 module.exports = {
   normalizeAndValidateBaseUrl,
   createRepoGitHub,
   createRepoGitea,
   checkGiteaConnection,
+  updateGiteaAvatar,
+  updateGiteaRepoAvatar,
+  updateGiteaRepoVisibility,
+  updateGiteaRepoTopics,
+  migrateRepoToGitea,
+  listGiteaTopicsCatalog,
+  getGiteaCurrentUser,
   listGiteaRepos,
   getGiteaUserHeatmap,
   getGiteaRepoContents,
@@ -1082,5 +1943,25 @@ module.exports = {
   editGiteaRelease,
   deleteGiteaRelease,
   uploadReleaseAsset,
-  deleteReleaseAsset
+  deleteReleaseAsset,
+  // GitHub API
+  listGithubRepos,
+  getGithubCurrentUser,
+  getGithubUserHeatmap,
+  getGithubRepoContents,
+  getGithubFileContent,
+  uploadGithubFile,
+  deleteGithubFile,
+  getGithubCommits,
+  getGithubCommitDiff,
+  getGithubCommitFiles,
+  searchGithubCommits,
+  getGithubBranches,
+  listGithubReleases,
+  createGithubRelease,
+  editGithubRelease,
+  deleteGithubRelease,
+  updateGithubRepoVisibility,
+  updateGithubRepoTopics,
+  deleteGithubRepo
 };
\ No newline at end of file