Atom++ download flow: atompp.ai/download funnel + fix Intel dmg naming

- product.overlay.json: add downloadUrl (atompp.ai/download), releaseNotesUrl, updateUrl so the
  in-app updater's Download button has a target; fix stale licenseUrl/reportIssueUrl that still
  pointed at the old systemu-net/atom-plus-plus org -> atom-plus-plus/atompp
- README: Download section points at atompp.ai/download (+ direct arch links + all releases)
- make-dmg.sh: normalize the arch in the output name to arm64|x64 (was Atom++-x86_64.dmg on
  Intel, which mismatched the download funnel's expected Atom++-x64.dmg and would 404)
- build-macos.sh + make-dmg.sh: accept an arch-override arg (arm64|x64) so both dmgs are
  producible; the Rosetta guard stays a host check independent of the build target

The site side (site/app/download route + Download.tsx) lives in the separate, un-git-tracked
site/ folder and deploys via Vercel.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: ndemianc

README.md

@@ -8,7 +8,7 @@ Atom++ stands on the same battle-tested Monaco / Code-OSS core behind VS Code an
 
 ## Download
 
-Grab the latest **`Atom++-<arch>.dmg`** from **[Releases](https://github.com/atom-plus-plus/atompp/releases/latest)** (arm64 for Apple silicon, x64 for Intel), open it, and drag Atom++ to Applications.
+Get the latest **`.dmg`** from **[atompp.ai/download](https://atompp.ai/download)** — Apple Silicon or Intel — open it, and drag Atom++ to Applications. (Direct links: [Apple Silicon](https://atompp.ai/download/arm64) · [Intel](https://atompp.ai/download/x64) · [all releases](https://github.com/atom-plus-plus/atompp/releases/latest).)
 
 > Signed + notarized builds open with a plain double-click. If you're on an early unsigned build and macOS blocks first launch, right-click the app → **Open** (once), or run `xattr -dr com.apple.quarantine "/Applications/Atom++.app"`.
 

branding/product.overlay.json

@@ -35,8 +35,13 @@
   },
 
   "licenseName": "MIT",
-  "licenseUrl": "https://github.com/systemu-net/atom-plus-plus/blob/main/LICENSE",
-  "reportIssueUrl": "https://github.com/systemu-net/atom-plus-plus/issues/new",
+  "licenseUrl": "https://github.com/atom-plus-plus/atompp/blob/main/LICENSE",
+  "reportIssueUrl": "https://github.com/atom-plus-plus/atompp/issues/new",
+
+  "_downloadComment": "Download + update funnel through atompp.ai (see site/app/download/[arch]/route.ts). downloadUrl is where the notify-only updater's Download button sends the user; releaseNotesUrl backs its 'Release Notes' button. updateUrl is the feed base — the updater GETs {updateUrl}/api/update/{target}/{quality}/{commit}; until that endpoint is live it returns 404 and the updater silently treats it as 'up to date' (notify-only, non-fatal). RELEASE NOTE: atompp.ai must resolve to the deployed site before these links work.",
+  "downloadUrl": "https://atompp.ai/download",
+  "releaseNotesUrl": "https://github.com/atom-plus-plus/atompp/releases/latest",
+  "updateUrl": "https://atompp.ai",
 
   "enableTelemetry": false,
   "telemetryOptOutUrl": "",

scripts/build-macos.sh

@@ -14,12 +14,21 @@ VSCODE_DIR="$ROOT_DIR/vscode"
 
 [ -d "$VSCODE_DIR" ] || { echo "Run ./scripts/bootstrap.sh first."; exit 1; }
 
-# Detect arch -> gulp target.
-ARCH="$(uname -m)"
+# Target arch -> gulp target. First arg (arm64|x64) overrides the host arch so you can produce the
+# Intel build too — best run on a native x64 machine / CI runner (cross-building x64 from Apple
+# silicon needs the x64 toolchain installed). Defaults to the host arch.
+HOST_ARCH="$(uname -m)"
+ARCH="${1:-$HOST_ARCH}"
 case "$ARCH" in
-  arm64)  GULP_TARGET="vscode-darwin-arm64"; OUT_DIR="VSCode-darwin-arm64"; EXPECT_NODE_ARCH="arm64" ;;
-  x86_64) GULP_TARGET="vscode-darwin-x64";   OUT_DIR="VSCode-darwin-x64";   EXPECT_NODE_ARCH="x64"  ;;
-  *) echo "Unsupported arch: $ARCH"; exit 1 ;;
+  arm64|aarch64)    ARCH="arm64"; GULP_TARGET="vscode-darwin-arm64"; OUT_DIR="VSCode-darwin-arm64" ;;
+  x64|x86_64|amd64) ARCH="x64";   GULP_TARGET="vscode-darwin-x64";   OUT_DIR="VSCode-darwin-x64"  ;;
+  *) echo "Unsupported target arch: $ARCH (use arm64 or x64)"; exit 1 ;;
+esac
+# The Rosetta guard below is a HOST check (node must run native), independent of the build target.
+case "$HOST_ARCH" in
+  arm64)  EXPECT_NODE_ARCH="arm64" ;;
+  x86_64) EXPECT_NODE_ARCH="x64"  ;;
+  *) echo "Unsupported host arch: $HOST_ARCH"; exit 1 ;;
 esac
 
 cd "$VSCODE_DIR"
@@ -28,7 +37,7 @@ cd "$VSCODE_DIR"
 # (Run from inside the checkout; tolerate a missing glob under `set -e -o pipefail`.)
 NODE_ARCH="$(node -p 'process.arch')"
 if [ "$NODE_ARCH" != "$EXPECT_NODE_ARCH" ]; then
-  echo "[build] ERROR: host is $ARCH but Node arch is '$NODE_ARCH' (Rosetta mismatch)."
+  echo "[build] ERROR: host is $HOST_ARCH but Node arch is '$NODE_ARCH' (Rosetta mismatch)."
   echo "[build] Use a native arm64 Node and reinstall deps, then retry. See docs/M0-RUNBOOK.md."
   exit 1
 fi

scripts/make-dmg.sh

@@ -22,11 +22,14 @@ SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 ROOT_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
 cd "$ROOT_DIR"
 
-ARCH="$(uname -m)"
+# Target arch: first arg (arm64|x64) overrides the host arch (match build-macos.sh). Arch is
+# normalized to arm64|x64 so the output is Atom++-arm64.dmg / Atom++-x64.dmg — the EXACT filenames
+# the download funnel (atompp.ai/download/<arch>) and the site link to. Do not emit "x86_64" here.
+ARCH="${1:-$(uname -m)}"
 case "$ARCH" in
-  arm64)  OUT_DIR="VSCode-darwin-arm64" ;;
-  x86_64) OUT_DIR="VSCode-darwin-x64"  ;;
-  *) echo "[make-dmg] Unsupported arch: $ARCH"; exit 1 ;;
+  arm64|aarch64)    ARCH="arm64"; OUT_DIR="VSCode-darwin-arm64" ;;
+  x64|x86_64|amd64) ARCH="x64";   OUT_DIR="VSCode-darwin-x64"  ;;
+  *) echo "[make-dmg] Unsupported arch: $ARCH (use arm64 or x64)"; exit 1 ;;
 esac
 
 APP="$OUT_DIR/Atom++.app"