feat: add first-class pi target with mcporter/subagent compatibility

tests/sync-pi.test.ts

@@ -0,0 +1,68 @@
+import { describe, expect, test } from "bun:test"
+import { promises as fs } from "fs"
+import path from "path"
+import os from "os"
+import { syncToPi } from "../src/sync/pi"
+import type { ClaudeHomeConfig } from "../src/parsers/claude-home"
+
+describe("syncToPi", () => {
+  test("symlinks skills and writes MCPorter config", async () => {
+    const tempRoot = await fs.mkdtemp(path.join(os.tmpdir(), "sync-pi-"))
+    const fixtureSkillDir = path.join(import.meta.dir, "fixtures", "sample-plugin", "skills", "skill-one")
+
+    const config: ClaudeHomeConfig = {
+      skills: [
+        {
+          name: "skill-one",
+          sourceDir: fixtureSkillDir,
+          skillPath: path.join(fixtureSkillDir, "SKILL.md"),
+        },
+      ],
+      mcpServers: {
+        context7: { url: "https://mcp.context7.com/mcp" },
+        local: { command: "echo", args: ["hello"] },
+      },
+    }
+
+    await syncToPi(config, tempRoot)
+
+    const linkedSkillPath = path.join(tempRoot, "skills", "skill-one")
+    const linkedStat = await fs.lstat(linkedSkillPath)
+    expect(linkedStat.isSymbolicLink()).toBe(true)
+
+    const mcporterPath = path.join(tempRoot, "compound-engineering", "mcporter.json")
+    const mcporterConfig = JSON.parse(await fs.readFile(mcporterPath, "utf8")) as {
+      mcpServers: Record<string, { baseUrl?: string; command?: string }>
+    }
+
+    expect(mcporterConfig.mcpServers.context7?.baseUrl).toBe("https://mcp.context7.com/mcp")
+    expect(mcporterConfig.mcpServers.local?.command).toBe("echo")
+  })
+
+  test("merges existing MCPorter config", async () => {
+    const tempRoot = await fs.mkdtemp(path.join(os.tmpdir(), "sync-pi-merge-"))
+    const mcporterPath = path.join(tempRoot, "compound-engineering", "mcporter.json")
+    await fs.mkdir(path.dirname(mcporterPath), { recursive: true })
+
+    await fs.writeFile(
+      mcporterPath,
+      JSON.stringify({ mcpServers: { existing: { baseUrl: "https://example.com/mcp" } } }, null, 2),
+    )
+
+    const config: ClaudeHomeConfig = {
+      skills: [],
+      mcpServers: {
+        context7: { url: "https://mcp.context7.com/mcp" },
+      },
+    }
+
+    await syncToPi(config, tempRoot)
+
+    const merged = JSON.parse(await fs.readFile(mcporterPath, "utf8")) as {
+      mcpServers: Record<string, { baseUrl?: string }>
+    }
+
+    expect(merged.mcpServers.existing?.baseUrl).toBe("https://example.com/mcp")
+    expect(merged.mcpServers.context7?.baseUrl).toBe("https://mcp.context7.com/mcp")
+  })
+})