feat: customizable prompts

apps/server/src/index.ts

@@ -155,7 +155,7 @@ app.use('/api/agent', createAgentRoutes(agentService, events));
 app.use('/api/sessions', createSessionsRoutes(agentService));
 app.use('/api/features', createFeaturesRoutes(featureLoader));
 app.use('/api/auto-mode', createAutoModeRoutes(autoModeService));
-app.use('/api/enhance-prompt', createEnhancePromptRoutes());
+app.use('/api/enhance-prompt', createEnhancePromptRoutes(settingsService));
 app.use('/api/worktree', createWorktreeRoutes());
 app.use('/api/git', createGitRoutes());
 app.use('/api/setup', createSetupRoutes());

apps/server/src/lib/settings-helpers.ts

@@ -4,7 +4,16 @@
 
 import type { SettingsService } from '../services/settings-service.js';
 import type { ContextFilesResult, ContextFileInfo } from '@automaker/utils';
-import type { MCPServerConfig, McpServerConfig } from '@automaker/types';
+import { createLogger } from '@automaker/utils';
+import type { MCPServerConfig, McpServerConfig, PromptCustomization } from '@automaker/types';
+import {
+  mergeAutoModePrompts,
+  mergeAgentPrompts,
+  mergeBacklogPlanPrompts,
+  mergeEnhancementPrompts,
+} from '@automaker/prompts';
+
+const logger = createLogger('SettingsHelper');
 
 /**
  * Get the autoLoadClaudeMd setting, with project settings taking precedence over global.
@@ -21,15 +30,15 @@ export async function getAutoLoadClaudeMdSetting(
   logPrefix = '[SettingsHelper]'
 ): Promise<boolean> {
   if (!settingsService) {
-    console.log(`${logPrefix} SettingsService not available, autoLoadClaudeMd disabled`);
+    logger.info(`${logPrefix} SettingsService not available, autoLoadClaudeMd disabled`);
     return false;
   }
 
   try {
     // Check project settings first (takes precedence)
     const projectSettings = await settingsService.getProjectSettings(projectPath);
     if (projectSettings.autoLoadClaudeMd !== undefined) {
-      console.log(
+      logger.info(
         `${logPrefix} autoLoadClaudeMd from project settings: ${projectSettings.autoLoadClaudeMd}`
       );
       return projectSettings.autoLoadClaudeMd;
@@ -38,10 +47,10 @@ export async function getAutoLoadClaudeMdSetting(
     // Fall back to global settings
     const globalSettings = await settingsService.getGlobalSettings();
     const result = globalSettings.autoLoadClaudeMd ?? false;
-    console.log(`${logPrefix} autoLoadClaudeMd from global settings: ${result}`);
+    logger.info(`${logPrefix} autoLoadClaudeMd from global settings: ${result}`);
     return result;
   } catch (error) {
-    console.error(`${logPrefix} Failed to load autoLoadClaudeMd setting:`, error);
+    logger.error(`${logPrefix} Failed to load autoLoadClaudeMd setting:`, error);
     throw error;
   }
 }
@@ -59,17 +68,17 @@ export async function getEnableSandboxModeSetting(
   logPrefix = '[SettingsHelper]'
 ): Promise<boolean> {
   if (!settingsService) {
-    console.log(`${logPrefix} SettingsService not available, sandbox mode disabled`);
+    logger.info(`${logPrefix} SettingsService not available, sandbox mode disabled`);
     return false;
   }
 
   try {
     const globalSettings = await settingsService.getGlobalSettings();
     const result = globalSettings.enableSandboxMode ?? true;
-    console.log(`${logPrefix} enableSandboxMode from global settings: ${result}`);
+    logger.info(`${logPrefix} enableSandboxMode from global settings: ${result}`);
     return result;
   } catch (error) {
-    console.error(`${logPrefix} Failed to load enableSandboxMode setting:`, error);
+    logger.error(`${logPrefix} Failed to load enableSandboxMode setting:`, error);
     throw error;
   }
 }
@@ -171,13 +180,13 @@ export async function getMCPServersFromSettings(
       sdkServers[server.name] = convertToSdkFormat(server);
     }
 
-    console.log(
+    logger.info(
       `${logPrefix} Loaded ${enabledServers.length} MCP server(s): ${enabledServers.map((s) => s.name).join(', ')}`
     );
 
     return sdkServers;
   } catch (error) {
-    console.error(`${logPrefix} Failed to load MCP servers setting:`, error);
+    logger.error(`${logPrefix} Failed to load MCP servers setting:`, error);
     return {};
   }
 }
@@ -207,12 +216,12 @@ export async function getMCPPermissionSettings(
       mcpAutoApproveTools: globalSettings.mcpAutoApproveTools ?? true,
       mcpUnrestrictedTools: globalSettings.mcpUnrestrictedTools ?? true,
     };
-    console.log(
+    logger.info(
       `${logPrefix} MCP permission settings: autoApprove=${result.mcpAutoApproveTools}, unrestricted=${result.mcpUnrestrictedTools}`
     );
     return result;
   } catch (error) {
-    console.error(`${logPrefix} Failed to load MCP permission settings:`, error);
+    logger.error(`${logPrefix} Failed to load MCP permission settings:`, error);
     return defaults;
   }
 }
@@ -255,3 +264,43 @@ function convertToSdkFormat(server: MCPServerConfig): McpServerConfig {
     env: server.env,
   };
 }
+
+/**
+ * Get prompt customization from global settings and merge with defaults.
+ * Returns prompts merged with built-in defaults - custom prompts override defaults.
+ *
+ * @param settingsService - Optional settings service instance
+ * @param logPrefix - Prefix for log messages
+ * @returns Promise resolving to merged prompts for all categories
+ */
+export async function getPromptCustomization(
+  settingsService?: SettingsService | null,
+  logPrefix = '[PromptHelper]'
+): Promise<{
+  autoMode: ReturnType<typeof mergeAutoModePrompts>;
+  agent: ReturnType<typeof mergeAgentPrompts>;
+  backlogPlan: ReturnType<typeof mergeBacklogPlanPrompts>;
+  enhancement: ReturnType<typeof mergeEnhancementPrompts>;
+}> {
+  let customization: PromptCustomization = {};
+
+  if (settingsService) {
+    try {
+      const globalSettings = await settingsService.getGlobalSettings();
+      customization = globalSettings.promptCustomization || {};
+      logger.info(`${logPrefix} Loaded prompt customization from settings`);
+    } catch (error) {
+      logger.error(`${logPrefix} Failed to load prompt customization:`, error);
+      // Fall through to use empty customization (all defaults)
+    }
+  } else {
+    logger.info(`${logPrefix} SettingsService not available, using default prompts`);
+  }
+
+  return {
+    autoMode: mergeAutoModePrompts(customization.autoMode),
+    agent: mergeAgentPrompts(customization.agent),
+    backlogPlan: mergeBacklogPlanPrompts(customization.backlogPlan),
+    enhancement: mergeEnhancementPrompts(customization.enhancement),
+  };
+}

apps/server/src/routes/backlog-plan/generate-plan.ts

@@ -8,7 +8,7 @@ import { FeatureLoader } from '../../services/feature-loader.js';
 import { ProviderFactory } from '../../providers/provider-factory.js';
 import { logger, setRunningState, getErrorMessage } from './common.js';
 import type { SettingsService } from '../../services/settings-service.js';
-import { getAutoLoadClaudeMdSetting } from '../../lib/settings-helpers.js';
+import { getAutoLoadClaudeMdSetting, getPromptCustomization } from '../../lib/settings-helpers.js';
 
 const featureLoader = new FeatureLoader();
 
@@ -79,72 +79,17 @@ export async function generateBacklogPlan(
       content: `Loaded ${features.length} features from backlog`,
     });
 
-    // Build the system prompt
-    const systemPrompt = `You are an AI assistant helping to modify a software project's feature backlog.
-You will be given the current list of features and a user request to modify the backlog.
-
-IMPORTANT CONTEXT (automatically injected):
-- Remember to update the dependency graph if deleting existing features
-- Remember to define dependencies on new features hooked into relevant existing ones
-- Maintain dependency graph integrity (no orphaned dependencies)
-- When deleting a feature, identify which other features depend on it
-
-Your task is to analyze the request and produce a structured JSON plan with:
-1. Features to ADD (include title, description, category, and dependencies)
-2. Features to UPDATE (specify featureId and the updates)
-3. Features to DELETE (specify featureId)
-4. A summary of the changes
-5. Any dependency updates needed (removed dependencies due to deletions, new dependencies for new features)
-
-Respond with ONLY a JSON object in this exact format:
-\`\`\`json
-{
-  "changes": [
-    {
-      "type": "add",
-      "feature": {
-        "title": "Feature title",
-        "description": "Feature description",
-        "category": "Category name",
-        "dependencies": ["existing-feature-id"],
-        "priority": 1
-      },
-      "reason": "Why this feature should be added"
-    },
-    {
-      "type": "update",
-      "featureId": "existing-feature-id",
-      "feature": {
-        "title": "Updated title"
-      },
-      "reason": "Why this feature should be updated"
-    },
-    {
-      "type": "delete",
-      "featureId": "feature-id-to-delete",
-      "reason": "Why this feature should be deleted"
-    }
-  ],
-  "summary": "Brief overview of all proposed changes",
-  "dependencyUpdates": [
-    {
-      "featureId": "feature-that-depended-on-deleted",
-      "removedDependencies": ["deleted-feature-id"],
-      "addedDependencies": []
-    }
-  ]
-}
-\`\`\``;
+    // Load prompts from settings
+    const prompts = await getPromptCustomization(settingsService, '[BacklogPlan]');
 
-    // Build the user prompt
-    const userPrompt = `Current Features in Backlog:
-${formatFeaturesForPrompt(features)}
-
----
-
-User Request: ${prompt}
+    // Build the system prompt
+    const systemPrompt = prompts.backlogPlan.systemPrompt;
 
-Please analyze the current backlog and the user's request, then provide a JSON plan for the modifications.`;
+    // Build the user prompt from template
+    const currentFeatures = formatFeaturesForPrompt(features);
+    const userPrompt = prompts.backlogPlan.userPromptTemplate
+      .replace('{{currentFeatures}}', currentFeatures)
+      .replace('{{userRequest}}', prompt);
 
     events.emit('backlog-plan:event', {
       type: 'backlog_plan_progress',

apps/server/src/routes/enhance-prompt/index.ts

@@ -6,17 +6,19 @@
  */
 
 import { Router } from 'express';
+import type { SettingsService } from '../../services/settings-service.js';
 import { createEnhanceHandler } from './routes/enhance.js';
 
 /**
  * Create the enhance-prompt router
  *
+ * @param settingsService - Settings service for loading custom prompts
  * @returns Express router with enhance-prompt endpoints
  */
-export function createEnhancePromptRoutes(): Router {
+export function createEnhancePromptRoutes(settingsService?: SettingsService): Router {
   const router = Router();
 
-  router.post('/', createEnhanceHandler());
+  router.post('/', createEnhanceHandler(settingsService));
 
   return router;
 }

apps/server/src/routes/enhance-prompt/routes/enhance.ts

@@ -10,8 +10,9 @@ import { query } from '@anthropic-ai/claude-agent-sdk';
 import { createLogger } from '@automaker/utils';
 import { resolveModelString } from '@automaker/model-resolver';
 import { CLAUDE_MODEL_MAP } from '@automaker/types';
+import type { SettingsService } from '../../../services/settings-service.js';
+import { getPromptCustomization } from '../../../lib/settings-helpers.js';
 import {
-  getSystemPrompt,
   buildUserPrompt,
   isValidEnhancementMode,
   type EnhancementMode,
@@ -83,9 +84,12 @@ async function extractTextFromStream(
 /**
  * Create the enhance request handler
  *
+ * @param settingsService - Optional settings service for loading custom prompts
  * @returns Express request handler for text enhancement
  */
-export function createEnhanceHandler(): (req: Request, res: Response) => Promise<void> {
+export function createEnhanceHandler(
+  settingsService?: SettingsService
+): (req: Request, res: Response) => Promise<void> {
   return async (req: Request, res: Response): Promise<void> => {
     try {
       const { originalText, enhancementMode, model } = req.body as EnhanceRequestBody;
@@ -128,8 +132,19 @@ export function createEnhanceHandler(): (req: Request, res: Response) => Promise
 
       logger.info(`Enhancing text with mode: ${validMode}, length: ${trimmedText.length} chars`);
 
-      // Get the system prompt for this mode
-      const systemPrompt = getSystemPrompt(validMode);
+      // Load enhancement prompts from settings (merges custom + defaults)
+      const prompts = await getPromptCustomization(settingsService, '[EnhancePrompt]');
+
+      // Get the system prompt for this mode from merged prompts
+      const systemPromptMap: Record<EnhancementMode, string> = {
+        improve: prompts.enhancement.improveSystemPrompt,
+        technical: prompts.enhancement.technicalSystemPrompt,
+        simplify: prompts.enhancement.simplifySystemPrompt,
+        acceptance: prompts.enhancement.acceptanceSystemPrompt,
+      };
+      const systemPrompt = systemPromptMap[validMode];
+
+      logger.debug(`Using ${validMode} system prompt (length: ${systemPrompt.length} chars)`);
 
       // Build the user prompt with few-shot examples
       // This helps the model understand this is text transformation, not a coding task