Add Update Documentation context menu option

Adds AI-powered documentation update feature using CmdForge update-docs tool.
Right-click a project and select "Update Documentation..." to:
- Analyze project code and current docs
- Generate updated overview.md via AI
- Optionally deploy to Gitea Pages

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/development_hub/project_list.py

@@ -119,6 +119,11 @@ class ProjectListWidget(QWidget):
 
         menu.addSeparator()
 
+        # Update Documentation (AI-powered)
+        update_docs = QAction("Update Documentation...", self)
+        update_docs.triggered.connect(lambda: self._update_docs(project))
+        menu.addAction(update_docs)
+
         # Deploy Docs
         deploy_docs = QAction("Deploy Docs", self)
         deploy_docs.triggered.connect(lambda: self._deploy_docs(project))
@@ -166,3 +171,72 @@ class ProjectListWidget(QWidget):
                 f"This runs in the background. Check Gitea Pages\n"
                 f"in a minute to verify the deployment."
             )
+
+    def _update_docs(self, project: Project):
+        """Update documentation using CmdForge update-docs tool."""
+        from PyQt6.QtWidgets import QMessageBox
+
+        # Ask if user wants to deploy after updating
+        reply = QMessageBox.question(
+            self,
+            "Update Documentation",
+            f"This will use AI to analyze {project.title} and update its documentation.\n\n"
+            f"The update-docs tool will:\n"
+            f"1. Read the project's code and current docs\n"
+            f"2. Generate updated overview.md\n"
+            f"3. Optionally deploy to Gitea Pages\n\n"
+            f"Deploy after updating?",
+            QMessageBox.StandardButton.Yes | QMessageBox.StandardButton.No | QMessageBox.StandardButton.Cancel,
+            QMessageBox.StandardButton.Yes
+        )
+
+        if reply == QMessageBox.StandardButton.Cancel:
+            return
+
+        deploy_flag = "true" if reply == QMessageBox.StandardButton.Yes else "false"
+
+        # Run the update-docs CmdForge tool
+        # The tool expects input on stdin (can be empty) and --project argument
+        cmd = [
+            "python3", "-m", "cmdforge.runner", "update-docs",
+            "--project", project.key,
+            "--deploy", deploy_flag
+        ]
+
+        try:
+            # Run with empty stdin, capture output
+            result = subprocess.run(
+                cmd,
+                input="",
+                capture_output=True,
+                text=True,
+                timeout=120  # 2 minute timeout for AI processing
+            )
+
+            if result.returncode == 0:
+                QMessageBox.information(
+                    self,
+                    "Documentation Updated",
+                    f"Documentation for {project.title} has been updated.\n\n"
+                    f"{result.stdout}"
+                )
+            else:
+                QMessageBox.warning(
+                    self,
+                    "Update Failed",
+                    f"Failed to update documentation:\n\n{result.stderr or result.stdout}"
+                )
+        except subprocess.TimeoutExpired:
+            QMessageBox.warning(
+                self,
+                "Update Timeout",
+                "Documentation update timed out. Try running manually:\n\n"
+                f"update-docs --project {project.key}"
+            )
+        except FileNotFoundError:
+            QMessageBox.warning(
+                self,
+                "Tool Not Found",
+                "CmdForge update-docs tool not found.\n\n"
+                "Make sure CmdForge is installed and the update-docs tool exists."
+            )