Add dev Make targets and tune macOS invisible subtitle spacing

backlog/tasks/task-13 - Fix-macos-native-window-bounds-for-overlay-binding.md

@@ -5,7 +5,7 @@ status: Done
 assignee:
   - codex
 created_date: '2026-02-11 15:45'
-updated_date: '2026-02-11 16:28'
+updated_date: '2026-02-11 16:36'
 labels:
   - bug
   - macos
@@ -41,4 +41,5 @@ Follow-up in progress after packaged app runtime showed fullscreen fallback beha
 - Added throttled tracker logging for helper execution failures to expose runtime errors without log spam.
 - Updated Electron builder `extraResources` to ship `dist/scripts/get-mpv-window-macos` outside asar at `resources/scripts/get-mpv-window-macos`.
 - Added macOS-only invisible subtitle vertical nudge (`+5px`) in renderer layout to align interactive subtitles with mpv glyph baseline after bounds fix.
+- Increased macOS-only invisible subtitle line-height for multi-line text to improve separation as line count grows.
 <!-- SECTION:NOTES:END -->

backlog/tasks/task-18 - Add-remote-mac-mini-build-script.md

@@ -0,0 +1,41 @@
+---
+id: TASK-18
+title: Add remote mac mini build script
+status: Done
+assignee:
+  - codex
+created_date: '2026-02-11 16:48'
+updated_date: '2026-02-11 16:48'
+labels:
+  - build
+  - macos
+  - devex
+dependencies: []
+references:
+  - scripts/build-external.sh
+priority: medium
+---
+
+## Description
+
+<!-- SECTION:DESCRIPTION:BEGIN -->
+Add a script that offloads macOS package builds to a remote Mac mini over SSH, then syncs release artifacts back to the local workspace.
+<!-- SECTION:DESCRIPTION:END -->
+
+## Acceptance Criteria
+<!-- AC:BEGIN -->
+- [x] #1 Script supports remote host and path configuration.
+- [x] #2 Script supports signed and unsigned macOS build modes.
+- [x] #3 Script syncs project sources to remote and copies release artifacts back locally.
+<!-- AC:END -->
+
+## Implementation Notes
+
+<!-- SECTION:NOTES:BEGIN -->
+Added `scripts/build-external.sh` with:
+- Defaults for host alias (`mac-mini`) and remote path (`~/build/SubMiner`)
+- Argument flags: `--host`, `--remote-path`, `--signed`, `--unsigned`, `--skip-sync`, `--sync-only`
+- Rsync-based upload excluding heavyweight build artifacts and local dependencies
+- Remote build execution (`pnpm run build:mac` or `pnpm run build:mac:unsigned`)
+- Artifact sync back into local `release/`
+<!-- SECTION:NOTES:END -->