feat: 添加 skill learning 技能学习闭环系统

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/builtin-tools/src/tools/DiscoverSkillsTool/DiscoverSkillsTool.ts

@@ -0,0 +1,107 @@
+import { z } from 'zod/v4'
+import type { ToolResultBlockParam } from 'src/Tool.js'
+import { buildTool } from 'src/Tool.js'
+import { lazySchema } from 'src/utils/lazySchema.js'
+import {
+  DISCOVER_SKILLS_TOOL_NAME,
+  DESCRIPTION,
+  DISCOVER_SKILLS_PROMPT,
+} from './prompt.js'
+
+const inputSchema = lazySchema(() =>
+  z.strictObject({
+    description: z
+      .string()
+      .describe(
+        'Description of what you want to do. Be specific — e.g. "deploy a Next.js app to Cloudflare Workers" rather than just "deploy".',
+      ),
+    limit: z
+      .number()
+      .optional()
+      .describe('Maximum number of results to return (default: 5)'),
+  }),
+)
+type InputSchema = ReturnType<typeof inputSchema>
+type DiscoverInput = z.infer<InputSchema>
+
+type DiscoverOutput = {
+  results: Array<{ name: string; description: string; score: number }>
+  count: number
+}
+
+export const DiscoverSkillsTool = buildTool({
+  name: DISCOVER_SKILLS_TOOL_NAME,
+  searchHint: 'find search discover skills commands tools capabilities',
+  maxResultSizeChars: 10_000,
+  strict: true,
+
+  get inputSchema(): InputSchema {
+    return inputSchema()
+  },
+
+  async description() {
+    return DESCRIPTION
+  },
+  async prompt() {
+    return DISCOVER_SKILLS_PROMPT
+  },
+
+  isConcurrencySafe() {
+    return true
+  },
+  isReadOnly() {
+    return true
+  },
+
+  userFacingName() {
+    return 'Discover Skills'
+  },
+
+  renderToolUseMessage(input: Partial<DiscoverInput>) {
+    return `Searching skills: ${input.description?.slice(0, 80) ?? '...'}`
+  },
+
+  mapToolResultToToolResultBlockParam(
+    content: DiscoverOutput,
+    toolUseID: string,
+  ): ToolResultBlockParam {
+    if (content.count === 0) {
+      return {
+        tool_use_id: toolUseID,
+        type: 'tool_result',
+        content: 'No matching skills found for that description.',
+      }
+    }
+    const lines = content.results.map(
+      (r, i) =>
+        `${i + 1}. **${r.name}** (score: ${r.score.toFixed(2)})\n   ${r.description}`,
+    )
+    return {
+      tool_use_id: toolUseID,
+      type: 'tool_result',
+      content: `Found ${content.count} relevant skill(s):\n\n${lines.join('\n\n')}`,
+    }
+  },
+
+  async call(input: DiscoverInput, context) {
+    const { getSkillIndex, searchSkills } = await import(
+      'src/services/skillSearch/localSearch.js'
+    )
+    const { getCwd } = await import('src/utils/cwd.js')
+    const cwd = getCwd()
+
+    const index = await getSkillIndex(cwd)
+    const results = searchSkills(input.description, index, input.limit ?? 5)
+
+    return {
+      data: {
+        results: results.map(r => ({
+          name: r.name,
+          description: r.description,
+          score: r.score,
+        })),
+        count: results.length,
+      },
+    }
+  },
+})