feat(mango): first-class MangoWM support across DMS, dankinstaller & UI tools

- Bring up Mango to parity with niri/hyprland via a native JSON-IPC w/Native MangoServic., replaces the legacy dwl/`mmsg` path and recent breaking changes
- Dankinstall: mango supported installer, config/binds templates, and packaging (Arch AUR, Fedora Terra auto-enable, Gentoo GURU)
- Window rules: Go provider + CLI + Settings GUI editor
- Keybinds + config reload on edit (mmsg dispatch reload_config)
- Misc new supported options in DMS settings

core/internal/keybinds/providers/mangowc.go

@@ -397,6 +397,14 @@ func (m *MangoWCProvider) writeBindLine(sb *strings.Builder, bind *mangowcOverri
 	mods, key := m.parseKeyString(bind.Key)
 	command, params := m.parseAction(bind.Action)
 
+	// Description goes on the line ABOVE the bind: mango doesn't strip inline `#`
+	// comments from a value, so a trailing comment would break spawn (extra argv).
+	if bind.Description != "" {
+		sb.WriteString("# ")
+		sb.WriteString(bind.Description)
+		sb.WriteString("\n")
+	}
+
 	sb.WriteString("bind=")
 	if mods == "" {
 		sb.WriteString("none")
@@ -413,11 +421,6 @@ func (m *MangoWCProvider) writeBindLine(sb *strings.Builder, bind *mangowcOverri
 		sb.WriteString(params)
 	}
 
-	if bind.Description != "" {
-		sb.WriteString(" # ")
-		sb.WriteString(bind.Description)
-	}
-
 	sb.WriteString("\n")
 }
 

core/internal/keybinds/providers/mangowc_parser.go

@@ -216,101 +216,37 @@ func mangowcAutogenerateComment(command, params string) string {
 	}
 }
 
-func (p *MangoWCParser) getKeybindAtLine(lineNumber int) *MangoWCKeyBinding {
+func (p *MangoWCParser) getKeybindAtLine(lineNumber int, precedingComment string) *MangoWCKeyBinding {
 	if lineNumber >= len(p.contentLines) {
 		return nil
 	}
-
-	line := p.contentLines[lineNumber]
-
-	bindMatch := regexp.MustCompile(`^(bind[lsr]*)\s*=\s*(.+)$`)
-	matches := bindMatch.FindStringSubmatch(line)
-	if len(matches) < 3 {
-		return nil
-	}
-
-	bindType := matches[1]
-	content := matches[2]
-
-	parts := strings.SplitN(content, "#", 2)
-	keys := parts[0]
-
-	var comment string
-	if len(parts) > 1 {
-		comment = strings.TrimSpace(parts[1])
-	}
-
-	if strings.HasPrefix(comment, MangoWCHideComment) {
-		return nil
-	}
-
-	keyFields := strings.SplitN(keys, ",", 4)
-	if len(keyFields) < 3 {
-		return nil
-	}
-
-	mods := strings.TrimSpace(keyFields[0])
-	key := strings.TrimSpace(keyFields[1])
-	command := strings.TrimSpace(keyFields[2])
-
-	var params string
-	if len(keyFields) > 3 {
-		params = strings.TrimSpace(keyFields[3])
-	}
-
-	if comment == "" {
-		comment = mangowcAutogenerateComment(command, params)
-	}
-
-	var modList []string
-	if mods != "" && !strings.EqualFold(mods, "none") {
-		modstring := mods + string(MangoWCModSeparators[0])
-		p := 0
-		for index, char := range modstring {
-			isModSep := false
-			for _, sep := range MangoWCModSeparators {
-				if char == sep {
-					isModSep = true
-					break
-				}
-			}
-			if isModSep {
-				if index-p > 1 {
-					modList = append(modList, modstring[p:index])
-				}
-				p = index + 1
-			}
-		}
-	}
-
-	_ = bindType
-
-	return &MangoWCKeyBinding{
-		Mods:    modList,
-		Key:     key,
-		Command: command,
-		Params:  params,
-		Comment: comment,
-	}
+	return p.getKeybindAtLineContent(p.contentLines[lineNumber], precedingComment)
 }
 
 func (p *MangoWCParser) ParseKeys() []MangoWCKeyBinding {
 	var keybinds []MangoWCKeyBinding
+	var pendingComment string
 
 	for lineNumber := 0; lineNumber < len(p.contentLines); lineNumber++ {
-		line := p.contentLines[lineNumber]
-		if line == "" || strings.HasPrefix(strings.TrimSpace(line), "#") {
+		trimmed := strings.TrimSpace(p.contentLines[lineNumber])
+		if trimmed == "" {
+			pendingComment = ""
+			continue
+		}
+		if strings.HasPrefix(trimmed, "#") {
+			pendingComment = strings.TrimSpace(strings.TrimPrefix(trimmed, "#"))
+			continue
+		}
+		if !strings.HasPrefix(trimmed, "bind") {
+			pendingComment = ""
 			continue
 		}
 
-		if !strings.HasPrefix(strings.TrimSpace(line), "bind") {
-			continue
-		}
-
-		keybind := p.getKeybindAtLine(lineNumber)
+		keybind := p.getKeybindAtLine(lineNumber, pendingComment)
 		if keybind != nil {
 			keybinds = append(keybinds, *keybind)
 		}
+		pendingComment = ""
 	}
 
 	return keybinds
@@ -459,21 +395,35 @@ func (p *MangoWCParser) parseFileWithSource(filePath string) ([]MangoWCKeyBindin
 	p.currentSource = absPath
 
 	var keybinds []MangoWCKeyBinding
+	var pendingComment string
 	lines := strings.Split(string(data), "\n")
 
-	for lineNum, line := range lines {
+	for _, line := range lines {
 		trimmed := strings.TrimSpace(line)
 
+		if trimmed == "" {
+			pendingComment = ""
+			continue
+		}
+
 		if strings.HasPrefix(trimmed, "source") {
 			p.handleSource(trimmed, filepath.Dir(absPath), &keybinds)
+			pendingComment = ""
+			continue
+		}
+
+		if strings.HasPrefix(trimmed, "#") {
+			pendingComment = strings.TrimSpace(strings.TrimPrefix(trimmed, "#"))
 			continue
 		}
 
 		if !strings.HasPrefix(trimmed, "bind") {
+			pendingComment = ""
 			continue
 		}
 
-		kb := p.getKeybindAtLineContent(line, lineNum)
+		kb := p.getKeybindAtLineContent(line, pendingComment)
+		pendingComment = ""
 		if kb == nil {
 			continue
 		}
@@ -529,7 +479,10 @@ func (p *MangoWCParser) parseDMSBindsDirectly(dmsBindsPath string) []MangoWCKeyB
 	return keybinds
 }
 
-func (p *MangoWCParser) getKeybindAtLineContent(line string, _ int) *MangoWCKeyBinding {
+// getKeybindAtLineContent parses one `bind=` line. precedingComment (a `# ...`
+// line directly above) is the description: mango feeds inline comments to spawn
+// as argv, so DMS keeps descriptions on the line above; inline `#` is a fallback.
+func (p *MangoWCParser) getKeybindAtLineContent(line string, precedingComment string) *MangoWCKeyBinding {
 	bindMatch := regexp.MustCompile(`^(bind[lsr]*)\s*=\s*(.+)$`)
 	matches := bindMatch.FindStringSubmatch(line)
 	if len(matches) < 3 {
@@ -544,6 +497,9 @@ func (p *MangoWCParser) getKeybindAtLineContent(line string, _ int) *MangoWCKeyB
 	if len(parts) > 1 {
 		comment = strings.TrimSpace(parts[1])
 	}
+	if comment == "" {
+		comment = strings.TrimSpace(precedingComment)
+	}
 
 	if strings.HasPrefix(comment, MangoWCHideComment) {
 		return nil

core/internal/keybinds/providers/mangowc_parser_test.go

@@ -174,7 +174,7 @@ func TestMangoWCGetKeybindAtLine(t *testing.T) {
 		t.Run(tt.name, func(t *testing.T) {
 			parser := NewMangoWCParser("")
 			parser.contentLines = []string{tt.line}
-			result := parser.getKeybindAtLine(0)
+			result := parser.getKeybindAtLine(0, "")
 
 			if tt.expected == nil {
 				if result != nil {
@@ -421,7 +421,7 @@ func TestMangoWCInvalidBindLines(t *testing.T) {
 		t.Run(tt.name, func(t *testing.T) {
 			parser := NewMangoWCParser("")
 			parser.contentLines = []string{tt.line}
-			result := parser.getKeybindAtLine(0)
+			result := parser.getKeybindAtLine(0, "")
 
 			if result != nil {
 				t.Errorf("expected nil for invalid line, got %+v", result)