Add pi web POC

src/server/workspaces/workspaceService.ts

@@ -0,0 +1,38 @@
+import { createHash } from "node:crypto";
+import type { Project } from "../types.js";
+import type { Workspace } from "../types.js";
+import { discoverGitWorktrees, isGitRepository } from "./gitWorktreeDiscovery.js";
+
+const idFor = (value: string) => createHash("sha1").update(value).digest("hex").slice(0, 12);
+
+export class WorkspaceService {
+  async list(project: Project): Promise<Workspace[]> {
+    if (!(await isGitRepository(project.path))) {
+      return [this.single(project)];
+    }
+
+    const worktrees = await discoverGitWorktrees(project.path);
+    if (worktrees.length === 0) return [this.single(project)];
+
+    return worktrees.map((worktree) => ({
+      id: idFor(`${project.id}:${worktree.path}`),
+      projectId: project.id,
+      path: worktree.path,
+      label: worktree.branch || (worktree.detached ? "detached" : worktree.path.split("/").filter(Boolean).at(-1) || worktree.path),
+      branch: worktree.branch,
+      isMain: worktree.path === project.path,
+      isGitWorktree: true,
+    }));
+  }
+
+  private single(project: Project): Workspace {
+    return {
+      id: idFor(`${project.id}:${project.path}`),
+      projectId: project.id,
+      path: project.path,
+      label: project.name,
+      isMain: true,
+      isGitWorktree: false,
+    };
+  }
+}