Add Omarchy shell plugin for the Stream Deck

QML bar widget + popout panel (dev.woodard.streamdeck) that drives
streamdeck-ctl: key grid shaped by the connected model, per-key editor,
brightness slider, and daemon controls. Themed via qs.Commons.

Makefile gains build-ctl, install-ctl, install-plugin, validate-plugin
and uninstall-plugin targets.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BjuZBBfzXqZgxRhxzJvkkC

Makefile

@@ -1,10 +1,16 @@
 BINARY        := streamdeck-go
 HELPER        := streamdeck-helper
 INIT          := streamdeck-init
+CTL           := streamdeck-ctl
 PREFIX        ?= $(HOME)/.local
 CONFIG_DIR    := $(HOME)/.config/streamdeck-go
 GROUP         := streamdeck
 
+# ── Omarchy shell plugin ──────────────────────────────────────────────────────
+PLUGIN_ID     := dev.woodard.streamdeck
+PLUGIN_SRC    := $(CURDIR)/omarchy-plugin
+PLUGIN_DIR    := $(HOME)/.config/omarchy/plugins/$(PLUGIN_ID)
+
 # ── OS detection ──────────────────────────────────────────────────────────────
 OS := $(shell uname -s)
 
@@ -24,7 +30,9 @@ else
   UDEV_RULE      := /etc/udev/rules.d/99-streamdeck.rules
 endif
 
-.PHONY: build build-helper build-init install install-helper install-watchdog reinstall uninstall uninstall-helper uninstall-watchdog udev
+.PHONY: build build-helper build-init build-ctl install install-ctl install-helper install-watchdog \
+        install-plugin uninstall-plugin validate-plugin reinstall uninstall uninstall-helper \
+        uninstall-watchdog udev
 
 # ── Build ─────────────────────────────────────────────────────────────────────
 
@@ -37,6 +45,9 @@ build-helper:
 build-init:
 	go build -o $(INIT) ./cmd/streamdeck-init/
 
+build-ctl:
+	go build -o $(CTL) ./cmd/streamdeck-ctl/
+
 # ── Install ───────────────────────────────────────────────────────────────────
 
 # Interactive install — prompts for dotfiles directory, installs binary + service.
@@ -223,6 +234,47 @@ reinstall: build
 	fi
 endif
 
+# ── streamdeck-ctl + Omarchy shell plugin ─────────────────────────────────────
+
+# The CLI the Omarchy plugin drives. Also useful on its own for scripting.
+install-ctl: build-ctl
+	mkdir -p $(BIN_DIR)
+	install -m 755 $(CTL) $(BIN_DIR)/$(CTL)
+	@echo "Installed $(BIN_DIR)/$(CTL)"
+
+# Symlink rather than copy so edits to the QML are live after a shell rescan.
+install-plugin: install-ctl
+	@if [ ! -d "$(HOME)/.config/omarchy" ]; then \
+		echo "Omarchy shell config not found at ~/.config/omarchy — is Omarchy installed?"; \
+		exit 1; \
+	fi
+	mkdir -p $(HOME)/.config/omarchy/plugins
+	@if [ -e "$(PLUGIN_DIR)" ] && [ ! -L "$(PLUGIN_DIR)" ]; then \
+		echo "$(PLUGIN_DIR) exists and is not a symlink — remove it first."; \
+		exit 1; \
+	fi
+	ln -sfn "$(PLUGIN_SRC)" "$(PLUGIN_DIR)"
+	# Validate the source tree, not the link: `omarchy plugin validate` refuses a
+	# symlinked plugin folder by design, but the shell resolves it happily.
+	@omarchy plugin validate "$(PLUGIN_SRC)" || true
+	@omarchy-shell shell rescanPlugins >/dev/null 2>&1 || true
+	@echo ""
+	@echo "Plugin linked: $(PLUGIN_DIR) -> $(PLUGIN_SRC)"
+	@echo "Enable it with:  omarchy plugin enable $(PLUGIN_ID) right"
+
+validate-plugin:
+	omarchy plugin validate "$(PLUGIN_SRC)"
+	@command -v qmllint >/dev/null 2>&1 && \
+		qmllint -I $${OMARCHY_PATH:-/usr/share/omarchy}/shell "$(PLUGIN_SRC)"/*.qml || \
+		echo "qmllint not installed — skipped QML lint"
+
+uninstall-plugin:
+	omarchy plugin disable $(PLUGIN_ID) 2>/dev/null || true
+	rm -f "$(PLUGIN_DIR)"
+	rm -f $(BIN_DIR)/$(CTL)
+	@omarchy-shell shell rescanPlugins >/dev/null 2>&1 || true
+	@echo "Plugin unlinked and $(CTL) removed."
+
 # ── Uninstall ─────────────────────────────────────────────────────────────────
 
 ifeq ($(OS),Darwin)