refactor(gemini-cli): change agent storage from multiple files to single (#308)

* refactor(gemini-cli): change agent storage from multiple files to single concatenated file

- Update configuration to use .gemini/bmad-method/ directory instead of .gemini/agents/
- Implement new logic to concatenate all agent files into single GEMINI.md
- Add backward compatibility for existing settings.json
- Remove old agents directory and update related documentation
- Ensure all agent settings are properly loaded

* fix(ide-setup): change agent trigger symbol from @ to *

The change was made to standardize the agent trigger symbol across the system and avoid confusion with other special characters.

* docs: update gemini cli syntax and file structure

- Change agent mention syntax from @ to * in docs and config
- Update file structure documentation from .gemini/agents/ to .gemini/bmad-method/
- Add gemini cli syntax to workflow guide

* fix(ide-setup): remove redundant contextFileNames handling

docs/agentic-tools/gemini-cli-guide.md

@@ -6,23 +6,22 @@ For the complete workflow, see the [BMad Workflow Guide](../bmad-workflow-guide.
 
 When running `npx bmad-method install`, select **Gemini CLI** as your IDE. This creates:
 
-- `.gemini/agents/` directory with all agent context files
+- `.gemini/bmad-method/` directory with all agent context in GEMINI.md file
-- `.gemini/settings.json` configured to load all agents automatically
 
 ## Using BMad Agents with Gemini CLI
 
 Simply mention the agent in your prompt:
 
-- "As @dev, implement the login feature"
+- "As \*dev, implement the login feature"
-- "Acting as @architect, review this system design"
+- "Acting as \*architect, review this system design"
-- "@sm, create the next story for our project"
+- "\*sm, create the next story for our project"
 
 The Gemini CLI automatically loads the appropriate agent context.
 
 ## Gemini CLI-Specific Features
 
-- **Context files**: All agents loaded as context in `.gemini/agents/`
+- **Context files**: All agents loaded as context in `.gemini/bmad-method/GEMINI.md`
-- **Automatic loading**: Settings.json ensures agents are always available
+- **Automatic loading**: GEMINI.md ensures agents are always available
 - **Natural language**: No special syntax needed, just mention the agent
 
 ## Tips for Gemini CLI Users

docs/bmad-workflow-guide.md

@@ -111,6 +111,7 @@ Follow the SM → Dev cycle for systematic story development:
 
 - **Claude Code**: `/agent-name` (e.g., `/bmad-master`)
 - **Cursor**: `@agent-name` (e.g., `@bmad-master`)
+- **Gemini CLI**: `*agent-name` (e.g., `*bmad-master`)
 - **Windsurf**: `@agent-name` (e.g., `@bmad-master`)
 - **Trae**: `@agent-name` (e.g., `@bmad-master`)
 - **Roo Code**: Select mode from mode selector (e.g., `bmad-bmad-master`)

tools/installer/config/install.config.yaml

@@ -68,13 +68,14 @@ ide-configurations:
       # 4. Rules are stored in .clinerules/ directory in your project
   gemini:
     name: Gemini CLI
-    rule-dir: .gemini/agents/
+    rule-dir: .gemini/bmad-method/
-    format: context-files
+    format: single-file
+    command-suffix: .md
     instructions: |
       # To use BMad agents with the Gemini CLI:
-      # 1. The installer creates a .gemini/ directory in your project.
+      # 1. The installer creates a .gemini/bmad-method/ directory in your project.
-      # 2. It also configures .gemini/settings.json to load all agent files.
+      # 2. It concatenates all agent files into a single GEMINI.md file.
-      # 3. Simply mention the agent in your prompt (e.g., "As @dev, ...").
+      # 3. Simply mention the agent in your prompt (e.g., "As *dev, ...").
       # 4. The Gemini CLI will automatically have the context for that agent.
   github-copilot:
     name: Github Copilot

tools/installer/lib/ide-setup.js

@@ -512,12 +512,53 @@ class IdeSetup {
   async setupGeminiCli(installDir, selectedAgent) {
     await initializeModules();
     const geminiDir = path.join(installDir, ".gemini");
-    const agentsContextDir = path.join(geminiDir, "agents");
+    const bmadMethodDir = path.join(geminiDir, "bmad-method");
-    await fileManager.ensureDirectory(agentsContextDir);
+    await fileManager.ensureDirectory(bmadMethodDir);
+
+    // Update logic for existing settings.json
+    const settingsPath = path.join(geminiDir, "settings.json");
+    if (await fileManager.pathExists(settingsPath)) {
+      try {
+        const settingsContent = await fileManager.readFile(settingsPath);
+        const settings = JSON.parse(settingsContent);
+        let updated = false;
+        
+        // Handle contextFileName property
+        if (settings.contextFileName && Array.isArray(settings.contextFileName)) {
+          const originalLength = settings.contextFileName.length;
+          settings.contextFileName = settings.contextFileName.filter(
+            (fileName) => !fileName.startsWith("agents/")
+          );
+          if (settings.contextFileName.length !== originalLength) {
+            updated = true;
+          }
+        }
+        
+        if (updated) {
+          await fileManager.writeFile(
+            settingsPath,
+            JSON.stringify(settings, null, 2)
+          );
+          console.log(chalk.green("✓ Updated .gemini/settings.json - removed agent file references"));
+        }
+      } catch (error) {
+        console.warn(
+          chalk.yellow("Could not update .gemini/settings.json"),
+          error
+        );
+      }
+    }
+
+    // Remove old agents directory
+    const agentsDir = path.join(geminiDir, "agents");
+    if (await fileManager.pathExists(agentsDir)) {
+      await fileManager.removeDirectory(agentsDir);
+      console.log(chalk.green("✓ Removed old .gemini/agents directory"));
+    }
 
     // Get all available agents
     const agents = await this.getAllAgentIds(installDir);
-    const agentContextFiles = [];
+    let concatenatedContent = "";
 
     for (const agentId of agents) {
       // Find the source agent file
@@ -525,43 +566,46 @@ class IdeSetup {
 
       if (agentPath) {
         const agentContent = await fileManager.readFile(agentPath);
-        const contextFilePath = path.join(agentsContextDir, `${agentId}.md`);
+        
-
+        // Create properly formatted agent rule content (similar to trae)
-        // Copy the agent content directly into its own context file
+        let agentRuleContent = `# ${agentId.toUpperCase()} Agent Rule\n\n`;
-        await fileManager.writeFile(contextFilePath, agentContent);
+        agentRuleContent += `This rule is triggered when the user types \`*${agentId}\` and activates the ${await this.getAgentTitle(
-
+          agentId,
-        // Store the relative path for settings.json
+          installDir
-        const relativePath = path.relative(geminiDir, contextFilePath);
+        )} agent persona.\n\n`;
-        agentContextFiles.push(relativePath.replace(/\\/g, '/')); // Ensure forward slashes for consistency
+        agentRuleContent += "## Agent Activation\n\n";
-        console.log(chalk.green(`✓ Created context file for @${agentId}`));
+        agentRuleContent +=
+          "CRITICAL: Read the full YAML, start activation to alter your state of being, follow startup section instructions, stay in this being until told to exit this mode:\n\n";
+        agentRuleContent += "```yaml\n";
+        // Extract just the YAML content from the agent file
+        const yamlContent = extractYamlFromAgent(agentContent);
+        if (yamlContent) {
+          agentRuleContent += yamlContent;
+        }
+        else {
+          // If no YAML found, include the whole content minus the header
+          agentRuleContent += agentContent.replace(/^#.*$/m, "").trim();
+        }
+        agentRuleContent += "\n```\n\n";
+        agentRuleContent += "## File Reference\n\n";
+        const relativePath = path.relative(installDir, agentPath).replace(/\\/g, '/');
+        agentRuleContent += `The complete agent definition is available in [${relativePath}](${relativePath}).\n\n`;
+        agentRuleContent += "## Usage\n\n";
+        agentRuleContent += `When the user types \`*${agentId}\`, activate this ${await this.getAgentTitle(
+          agentId,
+          installDir
+        )} persona and follow all instructions defined in the YAML configuration above.\n`;
+        
+        // Add to concatenated content with separator
+        concatenatedContent += agentRuleContent + "\n\n---\n\n";
+        console.log(chalk.green(`✓ Added context for @${agentId}`));
       }
     }
 
-    console.log(chalk.green(`\n✓ Created individual agent context files in ${agentsContextDir}`));
+    // Write the concatenated content to GEMINI.md
-
+    const geminiMdPath = path.join(bmadMethodDir, "GEMINI.md");
-    // Add GEMINI.md to the context files array
+    await fileManager.writeFile(geminiMdPath, concatenatedContent);
-    agentContextFiles.push("GEMINI.md");
+    console.log(chalk.green(`\n✓ Created GEMINI.md in ${bmadMethodDir}`));
-
-    // Create or update settings.json
-    const settingsPath = path.join(geminiDir, "settings.json");
-    let settings = {};
-
-    if (await fileManager.pathExists(settingsPath)) {
-      try {
-        const existingSettings = await fileManager.readFile(settingsPath);
-        settings = JSON.parse(existingSettings);
-        console.log(chalk.yellow("Found existing .gemini/settings.json. Merging settings..."));
-      } catch (e) {
-        console.error(chalk.red("Error parsing existing settings.json. It will be overwritten."), e);
-        settings = {};
-      }
-    }
-
-    // Set contextFileName to our new array of files
-    settings.contextFileName = agentContextFiles;
-
-    await fileManager.writeFile(settingsPath, JSON.stringify(settings, null, 2));
-    console.log(chalk.green(`✓ Configured .gemini/settings.json to load all agent context files.`));
 
     return true;
   }