Move branch-slug to @getpaseo/protocol

The app must not import @getpaseo/server. Moving the slug validation
and slugify helpers into @getpaseo/protocol (already a shared dep of
app, client, server) gives every package a legitimate home for the
import. Drops the corresponding ./utils/branch-slug subpath from
@getpaseo/server's exports map.

Unblocks the Deploy App workflow, which only builds protocol/client/
audio for the app — server's dist never exists in that pipeline.

packages/server/src/utils/branch-slug.test.ts

@@ -1,66 +0,0 @@
-import { readFileSync } from "node:fs";
-import { fileURLToPath } from "node:url";
-import { dirname, join } from "node:path";
-import { describe, expect, it } from "vitest";
-import { slugify, validateBranchSlug } from "./branch-slug.js";
-
-describe("branch slug utilities", () => {
-  it("normalizes display names to lowercase branch slugs", () => {
-    expect(slugify("My Feature")).toBe("my-feature");
-  });
-
-  it("collapses punctuation and whitespace to a single hyphen", () => {
-    expect(slugify("My___Feature! @#$ Next")).toBe("my-feature-next");
-  });
-
-  it("trims leading and trailing hyphens", () => {
-    expect(slugify(" --- My Feature !!! ")).toBe("my-feature");
-  });
-
-  it("enforces the 50 character slug limit", () => {
-    const slug = slugify("a".repeat(60));
-
-    expect(slug).toBe("a".repeat(50));
-  });
-
-  it("validates branch slugs with clear messages", () => {
-    expect(validateBranchSlug("my-feature")).toEqual({ valid: true });
-    expect(validateBranchSlug("")).toEqual({
-      valid: false,
-      error: "Branch name cannot be empty",
-    });
-    expect(validateBranchSlug("My Feature")).toEqual({
-      valid: false,
-      error:
-        "Branch name must contain only lowercase letters, numbers, hyphens, and forward slashes",
-    });
-    expect(validateBranchSlug("-my-feature")).toEqual({
-      valid: false,
-      error: "Branch name cannot start or end with a hyphen",
-    });
-  });
-
-  it("is exported through the package subpath", () => {
-    const currentDir = dirname(fileURLToPath(import.meta.url));
-    const packageJson = JSON.parse(
-      readFileSync(join(currentDir, "..", "..", "package.json"), "utf8"),
-    ) as {
-      exports?: Record<string, { types?: string; source?: string; default?: string }>;
-    };
-
-    expect(packageJson.exports?.["./utils/branch-slug"]).toEqual({
-      types: "./dist/server/utils/branch-slug.d.ts",
-      source: "./src/utils/branch-slug.ts",
-      default: "./dist/server/utils/branch-slug.js",
-    });
-  });
-
-  it("does not import server-only modules", () => {
-    const currentDir = dirname(fileURLToPath(import.meta.url));
-    const source = readFileSync(join(currentDir, "branch-slug.ts"), "utf8");
-
-    expect(source).not.toMatch(
-      /from\s+["'](?:node:)?(?:fs|path|child_process)["']|from\s+["']node:/,
-    );
-  });
-});

packages/server/src/utils/branch-slug.ts

@@ -1,61 +0,0 @@
-/**
- * Validate that a string is a valid git branch name slug.
- * Must be lowercase alphanumeric with hyphens and forward slashes only.
- */
-export function validateBranchSlug(slug: string): {
-  valid: boolean;
-  error?: string;
-} {
-  if (!slug || slug.length === 0) {
-    return { valid: false, error: "Branch name cannot be empty" };
-  }
-
-  if (slug.length > 100) {
-    return { valid: false, error: "Branch name too long (max 100 characters)" };
-  }
-
-  const validPattern = /^[a-z0-9-/]+$/;
-  if (!validPattern.test(slug)) {
-    return {
-      valid: false,
-      error:
-        "Branch name must contain only lowercase letters, numbers, hyphens, and forward slashes",
-    };
-  }
-
-  if (slug.startsWith("-") || slug.endsWith("-")) {
-    return {
-      valid: false,
-      error: "Branch name cannot start or end with a hyphen",
-    };
-  }
-
-  if (slug.includes("--")) {
-    return { valid: false, error: "Branch name cannot have consecutive hyphens" };
-  }
-
-  return { valid: true };
-}
-
-export const MAX_SLUG_LENGTH = 50;
-
-/**
- * Convert a string to kebab-case for branch names.
- */
-export function slugify(input: string): string {
-  const slug = input
-    .toLowerCase()
-    .replace(/[^a-z0-9]+/g, "-")
-    .replace(/^-+|-+$/g, "");
-
-  if (slug.length <= MAX_SLUG_LENGTH) {
-    return slug;
-  }
-
-  const truncated = slug.slice(0, MAX_SLUG_LENGTH);
-  const lastHyphen = truncated.lastIndexOf("-");
-  if (lastHyphen > MAX_SLUG_LENGTH / 2) {
-    return truncated.slice(0, lastHyphen);
-  }
-  return truncated.replace(/-+$/, "");
-}

packages/server/src/utils/worktree.ts

@@ -30,9 +30,9 @@ import { spawnProcess } from "./spawn.js";
 import { resolvePaseoHome } from "../server/paseo-home.js";
 import { createExternalProcessEnv } from "../server/paseo-env.js";
 import { parseGitRevParsePath, resolveGitRevParsePath } from "./git-rev-parse-path.js";
-import { validateBranchSlug } from "./branch-slug.js";
+import { validateBranchSlug } from "@getpaseo/protocol/branch-slug";
 
-export { slugify, validateBranchSlug } from "./branch-slug.js";
+export { slugify, validateBranchSlug } from "@getpaseo/protocol/branch-slug";
 
 const execFileAsync = promisify(execFile);
 const READ_ONLY_GIT_ENV = {