Linux daemon: support everything except -l/-L and -c/-C

.gitignore

@@ -8,3 +8,6 @@ NOTES.md
 
 # Code-signing material (private key + CSR); never part of this repo
 signing/
+
+# Go binary built in-place by `go build .` in linux/ (make builds into build/)
+/linux/gitwatchd

linux/Makefile

@@ -1,20 +1,82 @@
 # gitwatchd for Linux: a single static Go binary.
-#   make          build build/gitwatchd for the host platform
-#   make test     go vet + go test
-#   make clean    remove build artifacts
+#   make            build build/gitwatchd for the host platform
+#   make test       go vet + go test
+#   make install    put the binary on PATH and start the daemon (no sudo)
+#   make uninstall  remove the binary, systemd unit and daemon state
+#   make clean      remove build artifacts
 
 GOFLAGS := -trimpath -ldflags "-s -w"
+BUILD   := build
 
-.PHONY: all build test clean
+# Install destination; empty means the first writable of /usr/local/bin,
+# ~/.local/bin, ~/bin. Override as `make install DEST=/custom/bin`.
+DEST ?=
+
+.PHONY: all build test install uninstall clean
 
 all: build
 
 build:
-	CGO_ENABLED=0 go build $(GOFLAGS) -o build/gitwatchd .
+	CGO_ENABLED=0 go build $(GOFLAGS) -o $(BUILD)/gitwatchd .
 
 test:
 	go vet ./...
 	go test ./...
 
+# --- local install / uninstall ---
+# Sudo-free: binary onto PATH, then started from there, which is what turns
+# autostart on for the first run of an installed copy.
+
+install: build
+	@$(BUILD)/gitwatchd stop >/dev/null 2>&1 || true
+	@DEST="$(DEST)"; \
+	if [ -n "$$DEST" ]; then mkdir -p "$$DEST"; else \
+		for d in /usr/local/bin "$$HOME/.local/bin" "$$HOME/bin"; do \
+			mkdir -p "$$d" 2>/dev/null || true; \
+			if [ -w "$$d" ]; then DEST="$$d"; break; fi; \
+		done; \
+	fi; \
+	if [ -z "$$DEST" ]; then \
+		echo "  ⚠ no writable bin dir found. Install by hand:  install -m 0755 $(BUILD)/gitwatchd /usr/local/bin/gitwatchd"; \
+		exit 1; \
+	fi; \
+	install -m 0755 $(BUILD)/gitwatchd "$$DEST/gitwatchd"; \
+	echo "✓ binary → $$DEST/gitwatchd"; \
+	case ":$$PATH:" in *":$$DEST:"*) ;; \
+		*) echo "  ⚠ $$DEST is not on your PATH. Add:  export PATH=\"$$DEST:\$$PATH\"";; esac; \
+	"$$DEST/gitwatchd" start
+	@echo "  Next:  gitwatchd .   to watch the current repo"
+
+# Uninstall never trusts PATH: everything is found by absolute path.
+uninstall:
+	@for d in /usr/local/bin "$$HOME/.local/bin" "$$HOME/bin"; do \
+		[ -x "$$d/gitwatchd" ] && "$$d/gitwatchd" autostart off >/dev/null 2>&1 || true; \
+	done
+	@UNIT="$$HOME/.config/systemd/user/gitwatchd.service"; \
+	STATE="$${XDG_STATE_HOME:-$$HOME/.local/state}/gitwatchd"; GONE=""; \
+	if command -v systemctl >/dev/null 2>&1; then \
+		systemctl --user disable --now gitwatchd >/dev/null 2>&1 || true; \
+	fi; \
+	if [ -f "$$UNIT" ]; then \
+		rm -f "$$UNIT"; GONE="systemd unit"; echo "  removed $$UNIT"; \
+		command -v systemctl >/dev/null 2>&1 && systemctl --user daemon-reload >/dev/null 2>&1 || true; \
+	fi; \
+	PID=$$(cat "$$STATE/gitwatchd.pid" 2>/dev/null); \
+	if [ -n "$$PID" ] && [ "$$(cat /proc/$$PID/comm 2>/dev/null)" = gitwatchd ]; then \
+		kill "$$PID" 2>/dev/null || true; \
+		for i in 1 2 3 4 5 6 7 8 9 10; do [ -d /proc/$$PID ] || break; sleep 0.2; done; \
+		[ -d /proc/$$PID ] && kill -9 "$$PID" 2>/dev/null; \
+		echo "  stopped daemon (pid $$PID)"; \
+	fi; \
+	BIN=""; \
+	for d in /usr/local/bin "$$HOME/.local/bin" "$$HOME/bin"; do \
+		[ -f "$$d/gitwatchd" ] && rm -f "$$d/gitwatchd" && BIN=1 && echo "  removed $$d/gitwatchd"; \
+	done; \
+	[ -n "$$BIN" ] && GONE="$${GONE:+$$GONE, }binary"; \
+	[ -d "$$STATE" ] && rm -rf "$$STATE" && GONE="$${GONE:+$$GONE, }daemon state"; \
+	if [ -n "$$GONE" ]; then echo "✓ uninstalled: $$GONE"; \
+	else echo "✓ nothing to uninstall: no gitwatchd binary, unit or state found"; fi
+	@echo "  (config at ~/.gitwatchd kept: 'rm ~/.gitwatchd' to reset watched repos too)"
+
 clean:
-	rm -rf build
+	rm -rf $(BUILD)