feat(KB-289): complete Step 1 — Remove AI title generation from store

packages/core/src/store.ts

@@ -382,14 +382,11 @@ export class TaskStore extends EventEmitter<TaskStoreEvents> {
     if (input.dependencies?.includes(id)) {
       throw new Error(`Task ${id} cannot depend on itself`);
     }
-    // Generate title from description if not provided
-    const generatedTitle = await generateTitleFromDescription(input.description, this.rootDir);
-    const title = input.title?.trim() || generatedTitle;
 
     const now = new Date().toISOString();
     const task: Task = {
       id,
-      title: title || undefined,
+      title: input.title?.trim() || undefined,
       description: input.description,
       column: input.column || "triage",
       dependencies: input.dependencies || [],
@@ -2237,130 +2234,3 @@ ${notificationsSection}`;
     }
   }
 }
-
-/**
- * Generate a concise title from a description by extracting the first N words.
- * Uses first 8-10 words, capped at ~50 characters.
- * Handles edge cases: very short descriptions, descriptions with only special chars.
- *
- * @param description - The task description
- * @returns A generated title string, or empty string if no valid words found
- */
-/** System prompt for AI title generation */
-const TITLE_GENERATION_PROMPT = `You are a title generation assistant for a task management system.
-
-Your job is to create a concise, descriptive title from a task description.
-
-## Guidelines
-- Maximum 60 characters
-- 3-8 words preferred
-- Summarize the key intent/action of the task
-- Use clear, professional language
-- Remove filler words (the, a, an) where possible
-- Output ONLY the title text, no quotes, no markdown, no explanations
-- If the input is already a good short title (3 words or less), return it as-is`;
-
-// Dynamic import for @kb/engine to avoid resolution issues in test environment
-// eslint-disable-next-line @typescript-eslint/no-explicit-any
-let createKbAgent: any;
-
-// Initialize the import (this runs in actual code, mocked in tests)
-async function initEngine() {
-  if (!createKbAgent) {
-    try {
-      // Use dynamic import with variable to prevent static analysis
-      const engineModule = "@kb/engine";
-      const engine = await import(/* @vite-ignore */ engineModule);
-      createKbAgent = engine.createKbAgent;
-    } catch {
-      // Allow failure in test environments - agent functionality will be stubbed
-      createKbAgent = undefined;
-    }
-  }
-}
-
-// Initialize on module load (will be awaited in actual usage)
-const engineReady = initEngine();
-
-/**
- * Generate a title from description using AI summarization.
- * Returns empty string if AI fails or description is empty.
- */
-async function generateTitleFromDescription(description: string, rootDir: string): Promise<string> {
-  if (!description?.trim()) {
-    return "";
-  }
-
-  // For very short descriptions (3 words or less), use as-is without AI call
-  const trimmed = description.trim();
-  const wordCount = trimmed.split(/\s+/).length;
-  if (wordCount <= 3 && trimmed.length <= 60) {
-    return trimmed;
-  }
-
-  // Ensure engine is loaded before using createKbAgent
-  await engineReady;
-
-  if (!createKbAgent) {
-    // AI engine not available - return empty string (no fallback to truncation)
-    return "";
-  }
-
-  try {
-    const agentResult = await createKbAgent({
-      cwd: rootDir,
-      systemPrompt: TITLE_GENERATION_PROMPT,
-      tools: "readonly",
-    });
-
-    if (!agentResult?.session) {
-      return "";
-    }
-
-    // Send the description to the agent
-    await agentResult.session.prompt(`Generate a title for this task:\n\n${description}`);
-
-    // Get the response text from the agent's state
-    interface AgentMessage {
-      role: string;
-      content?: string | Array<{ type: string; text: string }>;
-    }
-    const lastMessage = (agentResult.session.state.messages as AgentMessage[])
-      .filter((m: AgentMessage) => m.role === "assistant")
-      .pop();
-
-    let title = "";
-    if (lastMessage?.content) {
-      // Handle both string and array content types
-      if (typeof lastMessage.content === "string") {
-        title = lastMessage.content.trim();
-      } else if (Array.isArray(lastMessage.content)) {
-        // Extract text from content blocks
-        title = lastMessage.content
-          .filter((c: { type: string; text: string }): c is { type: "text"; text: string } => c.type === "text")
-          .map((c: { type: string; text: string }) => c.text)
-          .join("")
-          .trim();
-      }
-    }
-
-    // Clean the title: remove surrounding quotes, normalize whitespace
-    title = title
-      .replace(/^["']|["']$/g, "")  // Remove surrounding quotes
-      .replace(/\s+/g, " ")          // Normalize whitespace
-      .trim();
-
-    // Dispose the agent session
-    try {
-      agentResult.session.dispose?.();
-    } catch {
-      // Ignore disposal errors
-    }
-
-    // Return empty string if AI returned nothing (no fallback)
-    return title || "";
-  } catch {
-    // AI failed - return empty string (no fallback to truncation)
-    return "";
-  }
-}