feat: switch to /usr layout and add dynamic dependency detection

- Move binaries to /usr/bin and /usr/libexec for system integration
- Add find-deps.sh script to detect required system packages from .so
  files
- Update Makefile to generate Depends field dynamically using apt-file
- Add list-deps target to Makefile for dependency analysis
- Update README with new usage, features, and instructions
- Update CI workflow to install apt-file and update its database

Makefile

@@ -1,4 +1,4 @@
-.PHONY: all clean download extract deb help
+.PHONY: all clean download extract deb help list-deps
 
 # Variables
 GITHUB_REPO = zed-industries/zed
@@ -8,6 +8,7 @@ BUILD_DIR = build
 EXTRACT_DIR = $(BUILD_DIR)/extracted
 DEB_DIR = $(BUILD_DIR)/deb
 CONTROL_DIR = $(DEB_DIR)/DEBIAN
+FIND_DEPS_SCRIPT = ./find-deps.sh
 
 # Determine the latest stable version
 VERSION := $(shell curl -s https://api.github.com/repos/$(GITHUB_REPO)/releases/latest | jq -r '.tag_name' | sed 's/^v//')
@@ -20,15 +21,16 @@ DEB_FILE = $(BUILD_DIR)/$(PACKAGE_NAME)_$(VERSION)_amd64.deb
 all: deb
 
 help:
-	@echo "Makefile to create a .deb package for Zed Editor"
+	@echo "Makefile to create a .deb package for Zed Editor (using /usr layout)"
 	@echo ""
 	@echo "Available targets:"
-	@echo "  all       - Build the .deb package (default target)"
-	@echo "  download  - Download the archive from GitHub"
-	@echo "  extract   - Extract the archive"
-	@echo "  deb       - Create the .deb package"
-	@echo "  clean     - Clean up temporary files"
-	@echo "  help      - Display this help"
+	@echo "  all        - Build the .deb package (default target)"
+	@echo "  download   - Download the archive from GitHub"
+	@echo "  extract    - Extract the archive"
+	@echo "  deb        - Create the .deb package"
+	@echo "  list-deps  - List dynamic library dependencies"
+	@echo "  clean      - Clean up temporary files"
+	@echo "  help       - Display this help"
 	@echo ""
 	@echo "Detected version: $(VERSION)"
 
@@ -55,75 +57,76 @@ $(EXTRACT_DIR)/.extracted: $(BUILD_DIR)/$(ARCHIVE_NAME)
 	@touch $@
 	@echo "Extraction complete"
 
+# List dependencies dynamically
+list-deps: $(EXTRACT_DIR)/.extracted
+	@echo "Analyzing library dependencies..."
+	@chmod +x $(FIND_DEPS_SCRIPT)
+	@$(FIND_DEPS_SCRIPT) $(EXTRACT_DIR)/zed.app/lib
+
 # Create the .deb package
 deb: $(DEB_FILE)
 
 $(DEB_FILE): $(EXTRACT_DIR)/.extracted
-	@echo "Building .deb package..."
+	@echo "Building .deb package with /usr layout..."
 	@mkdir -p $(CONTROL_DIR)
-	@mkdir -p $(DEB_DIR)/opt/zed
 	@mkdir -p $(DEB_DIR)/usr/bin
+	@mkdir -p $(DEB_DIR)/usr/libexec
 	@mkdir -p $(DEB_DIR)/usr/share/applications
 	@mkdir -p $(DEB_DIR)/usr/share/icons/hicolor/512x512/apps
 	@mkdir -p $(DEB_DIR)/usr/share/icons/hicolor/1024x1024/apps
+	@mkdir -p $(DEB_DIR)/usr/share/doc/zed-editor
 
-	# Copy application files
-	@echo "Copying files..."
-	@cp -r $(EXTRACT_DIR)/zed.app/* $(DEB_DIR)/opt/zed/
-
-	# Create symbolic link for the binary
-	@ln -sf /opt/zed/bin/zed $(DEB_DIR)/usr/bin/zed
+	# Copy application files (excluding bundled libraries)
+	@echo "Copying binaries..."
+	@cp $(EXTRACT_DIR)/zed.app/bin/zed $(DEB_DIR)/usr/bin/
+	@cp $(EXTRACT_DIR)/zed.app/libexec/zed-editor $(DEB_DIR)/usr/libexec/
 
 	# Copy desktop file and icons
+	@echo "Copying desktop files and icons..."
 	@cp $(EXTRACT_DIR)/zed.app/share/applications/zed.desktop $(DEB_DIR)/usr/share/applications/
 	@sed -i '/^\[Desktop Entry\]/a StartupWMClass=dev.zed.Zed' $(DEB_DIR)/usr/share/applications/zed.desktop
 	@cp $(EXTRACT_DIR)/zed.app/share/icons/hicolor/512x512/apps/zed.png $(DEB_DIR)/usr/share/icons/hicolor/512x512/apps/
 	@cp $(EXTRACT_DIR)/zed.app/share/icons/hicolor/1024x1024/apps/zed.png $(DEB_DIR)/usr/share/icons/hicolor/1024x1024/apps/
 
-	# Create control file
-	@echo "Package: $(PACKAGE_NAME)" > $(CONTROL_DIR)/control
-	@echo "Version: $(VERSION)" >> $(CONTROL_DIR)/control
-	@echo "Section: editors" >> $(CONTROL_DIR)/control
-	@echo "Priority: optional" >> $(CONTROL_DIR)/control
-	@echo "Architecture: amd64" >> $(CONTROL_DIR)/control
-	@echo "Maintainer: Zed Packager <packager@local>" >> $(CONTROL_DIR)/control
-	@echo "Description: Zed - A high-performance, multiplayer code editor" >> $(CONTROL_DIR)/control
-	@echo " Zed is a next-generation code editor designed for" >> $(CONTROL_DIR)/control
-	@echo " high-performance collaboration with humans and AI." >> $(CONTROL_DIR)/control
-	@echo "Homepage: https://zed.dev" >> $(CONTROL_DIR)/control
+	# Copy licenses
+	@cp $(EXTRACT_DIR)/zed.app/licenses.md $(DEB_DIR)/usr/share/doc/zed-editor/
 
-	# Create postinst script to update icon cache
-	@echo "#!/bin/sh" > $(CONTROL_DIR)/postinst
-	@echo "set -e" >> $(CONTROL_DIR)/postinst
-	@echo "if [ \"\$$1\" = \"configure\" ] || [ \"\$$1\" = \"abort-upgrade\" ] || [ \"\$$1\" = \"abort-deconfigure\" ] || [ \"\$$1\" = \"abort-remove\" ]; then" >> $(CONTROL_DIR)/postinst
-	@echo "    if command -v gtk-update-icon-cache >/dev/null 2>&1; then" >> $(CONTROL_DIR)/postinst
-	@echo "        gtk-update-icon-cache -q -t -f /usr/share/icons/hicolor || true" >> $(CONTROL_DIR)/postinst
-	@echo "    fi" >> $(CONTROL_DIR)/postinst
-	@echo "    if command -v update-desktop-database >/dev/null 2>&1; then" >> $(CONTROL_DIR)/postinst
-	@echo "        update-desktop-database -q /usr/share/applications || true" >> $(CONTROL_DIR)/postinst
-	@echo "    fi" >> $(CONTROL_DIR)/postinst
-	@echo "fi" >> $(CONTROL_DIR)/postinst
-	@echo "exit 0" >> $(CONTROL_DIR)/postinst
+	# Create control file with library dependencies
+	@echo "Creating control file with dependencies..."
+	@chmod +x $(FIND_DEPS_SCRIPT)
+	@echo "Detecting library dependencies..."
+	@DEPS=$$($(FIND_DEPS_SCRIPT) --quiet --format makefile $(EXTRACT_DIR)/zed.app/lib); \
+	echo "Package: $(PACKAGE_NAME)" > $(CONTROL_DIR)/control; \
+	echo "Version: $(VERSION)" >> $(CONTROL_DIR)/control; \
+	echo "Section: editors" >> $(CONTROL_DIR)/control; \
+	echo "Priority: optional" >> $(CONTROL_DIR)/control; \
+	echo "Architecture: amd64" >> $(CONTROL_DIR)/control; \
+	if [ -n "$$DEPS" ]; then \
+		echo "Depends: $$DEPS" >> $(CONTROL_DIR)/control; \
+		echo "  Detected dependencies: $$DEPS"; \
+	else \
+		echo "Depends: libc6" >> $(CONTROL_DIR)/control; \
+		echo "  Warning: Could not detect dependencies, using minimal set"; \
+	fi; \
+	echo "Maintainer: Zed Packager <packager@local>" >> $(CONTROL_DIR)/control; \
+	echo "Description: Zed - A high-performance, multiplayer code editor" >> $(CONTROL_DIR)/control; \
+	echo " Zed is a next-generation code editor designed for" >> $(CONTROL_DIR)/control; \
+	echo " high-performance collaboration with humans and AI." >> $(CONTROL_DIR)/control; \
+	echo " ." >> $(CONTROL_DIR)/control; \
+	echo " This package uses system libraries instead of bundled ones." >> $(CONTROL_DIR)/control; \
+	echo "Homepage: https://zed.dev" >> $(CONTROL_DIR)/control
 
-	# Create postrm script to update icon cache on removal
-	@echo "#!/bin/sh" > $(CONTROL_DIR)/postrm
-	@echo "set -e" >> $(CONTROL_DIR)/postrm
-	@echo "if [ \"\$$1\" = \"remove\" ] || [ \"\$$1\" = \"purge\" ]; then" >> $(CONTROL_DIR)/postrm
-	@echo "    if command -v gtk-update-icon-cache >/dev/null 2>&1; then" >> $(CONTROL_DIR)/postrm
-	@echo "        gtk-update-icon-cache -q -t -f /usr/share/icons/hicolor || true" >> $(CONTROL_DIR)/postrm
-	@echo "    fi" >> $(CONTROL_DIR)/postrm
-	@echo "    if command -v update-desktop-database >/dev/null 2>&1; then" >> $(CONTROL_DIR)/postrm
-	@echo "        update-desktop-database -q /usr/share/applications || true" >> $(CONTROL_DIR)/postrm
-	@echo "    fi" >> $(CONTROL_DIR)/postrm
-	@echo "fi" >> $(CONTROL_DIR)/postrm
-	@echo "exit 0" >> $(CONTROL_DIR)/postrm
+	# Copy maintainer scripts
+	@echo "Creating maintainer scripts..."
+	@cp postinst $(CONTROL_DIR)/postinst
+	@cp postrm $(CONTROL_DIR)/postrm
 
 	# Set permissions
-	@chmod 755 $(DEB_DIR)/opt/zed/bin/zed
-	@chmod 755 $(DEB_DIR)/opt/zed/libexec/zed-editor
+	@echo "Setting permissions..."
+	@chmod 755 $(DEB_DIR)/usr/bin/zed
+	@chmod 755 $(DEB_DIR)/usr/libexec/zed-editor
 	@chmod 755 $(CONTROL_DIR)/postinst
 	@chmod 755 $(CONTROL_DIR)/postrm
-	@find $(DEB_DIR)/opt/zed/lib -type f -name "*.so*" -exec chmod 644 {} \;
 
 	# Build the .deb package
 	@echo "Creating .deb package..."
@@ -131,7 +134,11 @@ $(DEB_FILE): $(EXTRACT_DIR)/.extracted
 	@echo ""
 	@echo "✓ Package successfully created: $(DEB_FILE)"
 	@echo ""
+	@echo "Dependencies were automatically detected from bundled libraries."
+	@echo "Run 'make list-deps' to see the full dependency analysis."
+	@echo ""
 	@echo "To install: sudo dpkg -i $(DEB_FILE)"
+	@echo "If dependencies are missing: sudo apt-get install -f"
 
 # Clean up
 clean: