Fix mpv tile overlap portably; add make install/deploy

mpv 0.35 rejects --auto-window-resize, which crash-looped every player.
Drop that flag and re-assert each tile geometry on a 1s timer in the
daemon, overriding mpv auto-resize on any mpv version.

Add make install (auto-sudo, native build + copy to /usr/local/bin)
and make deploy (install + restart the kiosk getty unit).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Makefile

@@ -3,11 +3,22 @@ PKG := ./cmd/rtsp-streamer
 BINDIR := bin
 LDFLAGS := -s -w
 
-.PHONY: all build pi pi32 test vet clean run-tui
+# Install location. Override with `make install PREFIX=/opt`.
+PREFIX ?= /usr/local
+DESTBIN := $(PREFIX)/bin/$(BINARY)
+
+# Use sudo automatically when not already root, so `make install` /
+# `make deploy` work whether or not you prefix them with sudo.
+SUDO := $(shell [ "$$(id -u)" -eq 0 ] || echo sudo)
+
+# The kiosk session unit restarted by `make deploy`.
+KIOSK_UNIT ?= getty@tty1
+
+.PHONY: all build pi pi32 test vet clean run-tui install deploy uninstall
 
 all: build
 
-## build: compile for the host platform
+## build: compile for the host platform (native arch)
 build:
 	go build -ldflags '$(LDFLAGS)' -o $(BINDIR)/$(BINARY) $(PKG)
 
@@ -19,6 +30,22 @@ pi:
 pi32:
 	GOOS=linux GOARCH=arm GOARM=7 go build -ldflags '$(LDFLAGS)' -o $(BINDIR)/$(BINARY)-armv7 $(PKG)
 
+## install: build for this machine and copy the binary to $(PREFIX)/bin
+## (auto-sudo). This is the location the running daemon uses.
+install: build
+	$(SUDO) install -m 0755 $(BINDIR)/$(BINARY) $(DESTBIN)
+	@echo "installed -> $(DESTBIN)"
+
+## deploy: install, then restart the kiosk session so the wall picks it up
+deploy: install
+	$(SUDO) systemctl restart $(KIOSK_UNIT)
+	@echo "restarted $(KIOSK_UNIT); run 'rtsp-streamer status' to check"
+
+## uninstall: remove the installed binary
+uninstall:
+	$(SUDO) rm -f $(DESTBIN)
+	@echo "removed $(DESTBIN)"
+
 ## test: run unit tests
 test:
 	go test ./...