Add custom step names and fix F key shortcut

- Add name field to PromptStep, CodeStep, and ToolStep dataclasses
- Update step dialogs to allow editing step names
- Display custom step names in both list and flow views
- Fix F key shortcut by installing event filter on graph widget
- Steps without custom names show default "Prompt N" / "Code N"

Co-Authored-By: Claude Opus 4.5 <[email protected]>

src/cmdforge/gui/dialogs/step_dialog.py

@@ -36,6 +36,11 @@ class PromptStepDialog(QDialog):
         form = QFormLayout()
         form.setSpacing(12)
 
+        # Step name (optional)
+        self.name_input = QLineEdit()
+        self.name_input.setPlaceholderText("Optional display name")
+        form.addRow("Step name:", self.name_input)
+
         # Provider selection
         self.provider_combo = QComboBox()
         providers = load_providers()
@@ -95,6 +100,10 @@ class PromptStepDialog(QDialog):
 
     def _load_step(self, step: PromptStep):
         """Load step data into form."""
+        # Load name
+        if step.name:
+            self.name_input.setText(step.name)
+
         idx = self.provider_combo.findText(step.provider)
         if idx >= 0:
             self.provider_combo.setCurrentIndex(idx)
@@ -130,11 +139,14 @@ class PromptStepDialog(QDialog):
         # Don't store "None" profile
         if profile == "None":
             profile = None
+        # Get name, use None if empty
+        name = self.name_input.text().strip() or None
         return PromptStep(
             prompt=self.prompt_input.toPlainText(),
             provider=self.provider_combo.currentText(),
             output_var=self.output_input.text().strip(),
-            profile=profile
+            profile=profile,
+            name=name
         )
 
 
@@ -179,9 +191,15 @@ class CodeStepDialog(QDialog):
         layout = QVBoxLayout(self)
         layout.setSpacing(12)
 
-        # Top: Output variable
+        # Top: Step name and Output variable
         form = QFormLayout()
         form.setSpacing(8)
+
+        # Step name (optional)
+        self.name_input = QLineEdit()
+        self.name_input.setPlaceholderText("Optional display name")
+        form.addRow("Step name:", self.name_input)
+
         self.output_input = QLineEdit()
         self.output_input.setPlaceholderText("result")
         self.output_input.setText("result")
@@ -365,6 +383,9 @@ IMPORTANT: Return ONLY executable inline Python code. No function definitions, n
 
     def _load_step(self, step: CodeStep):
         """Load step data into form."""
+        # Load name
+        if step.name:
+            self.name_input.setText(step.name)
         self.output_input.setText(step.output_var)
         self.code_input.setPlainText(step.code)
 
@@ -396,7 +417,10 @@ IMPORTANT: Return ONLY executable inline Python code. No function definitions, n
 
     def get_step(self) -> CodeStep:
         """Get the step from form data."""
+        # Get name, use None if empty
+        name = self.name_input.text().strip() or None
         return CodeStep(
             code=self.code_input.toPlainText(),
-            output_var=self.output_input.text().strip()
+            output_var=self.output_input.text().strip(),
+            name=name
         )