Name the app bundle 'Second Display' everywhere; second-display for file artifacts

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

README.md

@@ -7,11 +7,11 @@ macOS 26+, Xcode (Command Line Tools).
 
 ## Build and run
 ```
-make          # builds build/SecondDisplay.app
+make          # builds build/Second Display.app
 make run      # build and launch
 make check    # lint: typecheck, plists, translations, signature
 make install  # copy to ~/Applications
-make dmg      # build/SecondDisplay-<version>.dmg (universal, not notarized)
+make dmg      # build/second-display-<version>.dmg (universal, not notarized)
 make help     # list targets
 ```
 The app is signed ad-hoc (works on this Mac). For distribution: `make SIGN_ID="Developer ID Application: ..."` (notarization is still required).
@@ -22,11 +22,11 @@ Build from source and install to `~/Applications`:
 git clone <repository-url> second-display
 cd second-display
 make install
-open ~/Applications/SecondDisplay.app
+open "$HOME/Applications/Second Display.app"
 ```
 On first launch macOS asks for camera and microphone access — allow both. You can change this later in System Settings → Privacy & Security.
 
-If you received a prebuilt copy (the `.dmg`), drag the app to Applications. It is not notarized, so macOS blocks it on first launch: allow it once in System Settings → Privacy & Security → "Open Anyway", or run `xattr -dr com.apple.quarantine /Applications/SecondDisplay.app`. The same steps are in `Read Me First.txt` inside the disk image.
+If you received a prebuilt copy (the `.dmg`), drag the app to Applications. It is not notarized, so macOS blocks it on first launch: allow it once in System Settings → Privacy & Security → "Open Anyway", or run `xattr -dr com.apple.quarantine "/Applications/Second Display.app"`. The same steps are in `Read Me First.txt` inside the disk image.
 
 ## Releasing a DMG
 `make dmg` builds a universal (arm64 + x86_64) app and packs it with an `Applications` shortcut and `Read Me First.txt` (source: `Config/dmg/`) in a styled Finder window: large icons and a background with an arrow (`Config/dmg/background.png`, generated by `scripts/make-dmg-background.swift`). The layout is written directly into the image by [dmgbuild](https://github.com/dmgbuild/dmgbuild) (settings in `Config/dmg/settings.py`), so no Finder automation is needed. The first `make dmg` installs it into `build/venv` (needs `python3` and network access). The disk image is not signed with a Developer ID or notarized; the instructions in it explain how recipients allow it. Bump the version in `Config/Info.plist` before releasing and tag it (`git tag -a vX.Y.Z -m vX.Y.Z`).
@@ -44,7 +44,7 @@ Menus at the top of the screen: **Video** (device, format), **Audio** (source or
 
 ## Settings and uninstall
 Settings: `~/Library/Preferences/com.mmacierzanka.seconddisplay.plist`.
-To remove the app and all its traces: `make uninstall` or `SecondDisplay.app/Contents/Resources/uninstall.sh`.
+To remove the app and all its traces: `make uninstall` or `"Second Display.app/Contents/Resources/uninstall.sh"`.
 
 ## License
 MIT — see [LICENSE](LICENSE).