Updates can come from your own git server

ProdDash fetched one tar.gz of the branch from GitHub's codeload host, with
that URL shape hardcoded. A `forge` setting now names where the code comes
from: absent or "github" behaves exactly as before, and a Gitea or Forgejo
base URL such as http://10.3.8.90:3000 fetches from a server of your own.

Gitea spells an archive URL differently — /archive/<branch>.tar.gz rather
than /tar.gz/<branch> — and that is the only real difference. Its tarball
carries the same pax header with the same commit hash, so the archive
parser, update detection and module installs are untouched. The "what
changed" link follows the forge too, using each one's own compare and
commits paths.

Verified against both: the same commit and version come back from GitHub
and from a self-hosted Gitea, and a module installs from each.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

server.js

@@ -13,6 +13,8 @@
  * proddash.json in the data directory (this machine's overrides), or env vars:
  *   PORT               (default: value in proddash.json, else 24500)
  *   PRODDASH_PASSCODE  (overrides adminPasscode in proddash.json)
+ *   PRODDASH_FORGE     (overrides `forge`: "github", or a Gitea/Forgejo base
+ *                       URL such as http://10.3.8.90:3000)
  *   PRODDASH_DATA_DIR  (where module config + layouts are kept; see below)
  */
 'use strict';
@@ -765,14 +767,52 @@ function parseRepoSetting(value, fallbackBranch) {
 
 const REPO = parseRepoSetting(process.env.PRODDASH_REPO || shellConfig.repo, shellConfig.branch)
   || parseRepoSetting('michaelmcgary2008/ProdDash', 'main');
+
+/**
+ * Which server the code comes from. GitHub unless `forge` names another —
+ * give it a Gitea (or Forgejo) base URL, "http://10.3.8.90:3000", and updates
+ * and module installs come from there instead. The two hosts differ only in
+ * how an archive URL is spelled: the tarball itself is the same, pax header
+ * and commit sha included, so everything downstream is untouched.
+ */
+function parseForge(value) {
+  const s = String(value || '').trim().replace(/\/+$/, '');
+  if (!s || s.toLowerCase() === 'github') {
+    return { kind: 'github', base: 'https://github.com', archiveBase: 'https://codeload.github.com' };
+  }
+  if (!/^https?:\/\//i.test(s)) return null;
+  // A GitHub URL still means codeload for archives.
+  if (/^https?:\/\/(www\.)?github\.com$/i.test(s)) {
+    return { kind: 'github', base: s, archiveBase: 'https://codeload.github.com' };
+  }
+  return { kind: 'gitea', base: s, archiveBase: s };
+}
+
+const FORGE = parseForge(process.env.PRODDASH_FORGE || shellConfig.forge) || parseForge('github');
 /** Where branch archives come from; tests point this at a local mock. */
-const ARCHIVE_BASE = String(process.env.PRODDASH_ARCHIVE_BASE || 'https://codeload.github.com').replace(/\/+$/, '');
+const ARCHIVE_BASE = String(process.env.PRODDASH_ARCHIVE_BASE || FORGE.archiveBase).replace(/\/+$/, '');
 const REMOTE_TTL_MS = 10 * 60 * 1000;
 const REMOTE_CHECK_MS = 6 * 60 * 60 * 1000;
 const MAX_ARCHIVE_BYTES = 80 * 1024 * 1024;
 
 function tarballUrl() {
-  return `${ARCHIVE_BASE}/${REPO.owner}/${REPO.repo}/tar.gz/${encodeURIComponent(REPO.branch)}`;
+  const branch = encodeURIComponent(REPO.branch);
+  return FORGE.kind === 'gitea'
+    ? `${ARCHIVE_BASE}/${REPO.owner}/${REPO.repo}/archive/${branch}.tar.gz`
+    : `${ARCHIVE_BASE}/${REPO.owner}/${REPO.repo}/tar.gz/${branch}`;
+}
+
+/** The page a human should read to see what changed between two commits. */
+function forgeCompareUrl(from, to) {
+  return `${FORGE.base}/${REPO.owner}/${REPO.repo}/compare/${from}...${to}`;
+}
+
+/** The commit list for the branch we follow. */
+function forgeCommitsUrl() {
+  const branch = encodeURIComponent(REPO.branch);
+  return FORGE.kind === 'gitea'
+    ? `${FORGE.base}/${REPO.owner}/${REPO.repo}/commits/branch/${branch}`
+    : `${FORGE.base}/${REPO.owner}/${REPO.repo}/commits/${branch}`;
 }
 
 function httpError(status, message) {
@@ -929,11 +969,11 @@ function shellStatus() {
     else if (local.branch !== REPO.branch) blocker = `this checkout is on branch "${local.branch}", not "${REPO.branch}"`;
     else if (local.dirty) blocker = 'this checkout has local changes — commit or discard them first';
   }
-  const gh = `https://github.com/${REPO.owner}/${REPO.repo}`;
   return {
     version: SHELL_VERSION,
     repo: `${REPO.owner}/${REPO.repo}`,
     branch: REPO.branch,
+    forge: FORGE.base,
     local: { isGit: local.isGit, sha: local.sha, branch: local.branch, dirty: local.dirty },
     remote: { version: remote.version, sha: remote.sha, checkedAt: remote.checkedAt, error: remote.error },
     updateAvailable: versionBehind || commitsBehind,
@@ -941,8 +981,8 @@ function shellStatus() {
     method: local.isGit ? 'git' : 'archive',
     updateBlocker: blocker,
     changesUrl: local.sha && remote.sha
-      ? `${gh}/compare/${local.sha.slice(0, 12)}...${remote.sha.slice(0, 12)}`
-      : `${gh}/commits/${REPO.branch}`,
+      ? forgeCompareUrl(local.sha.slice(0, 12), remote.sha.slice(0, 12))
+      : forgeCommitsUrl(),
   };
 }
 
@@ -1693,7 +1733,7 @@ server.on('listening', () => {
     ? '  Modules     : ' + ids.map((id) => id + (isEnabled(id) ? '' : ' (disabled)') + (manifests.get(id).incompatible ? ' (needs newer ProdDash)' : '')).join(', ')
     : '  Modules     : none installed');
   console.log('  Settings    : ' + DATA_DIR + (DATA_DIR === REPO_CONFIG_DIR ? '  (inside the app folder)' : ''));
-  console.log('  Repo        : ' + REPO.owner + '/' + REPO.repo + '@' + REPO.branch);
+  console.log('  Repo        : ' + REPO.owner + '/' + REPO.repo + '@' + REPO.branch + '  (' + FORGE.base + ')');
 });
 
 // A restart hands the port over from the exiting ProdDash: wait for it.