feat(daemon): add POST /git/checkout-branch endpoint (#1162)

* feat(daemon): add POST /git/checkout-branch endpoint

Adds a new git endpoint that creates and checks out a local branch from
the current working state, enabling the open-pull-request workflow without
publishing directly to main.

Made-with: Cursor

* feat(daemon): add POST /git/raw endpoint with allowlist validation (#1163)

* feat(daemon): add POST /git/raw endpoint with allowlist validation

Exposes git.raw() via HTTP with safety guardrails: only a curated set of
read/non-destructive subcommands is allowed (checkout, branch, stash, tag,
log, show, diff, merge, cherry-pick, etc.), and dangerous flags (--force,
--hard, --global, --system, etc.) are blocked regardless of subcommand.

Made-with: Cursor

* Update daemon/git.ts

Co-authored-by: cubic-dev-ai[bot] <191113872+cubic-dev-ai[bot]@users.noreply.github.com>

---------

Co-authored-by: cubic-dev-ai[bot] <191113872+cubic-dev-ai[bot]@users.noreply.github.com>

---------

Co-authored-by: cubic-dev-ai[bot] <191113872+cubic-dev-ai[bot]@users.noreply.github.com>

Author: guitavano

daemon/git.ts

@@ -315,6 +315,88 @@ export interface RebaseAPI {
   };
 }
 
+export interface CheckoutBranchAPI {
+  body: {
+    branchName: string;
+  };
+  response: {
+    branch: string;
+  };
+}
+
+// ─── /git/raw ─────────────────────────────────────────────────────────────────
+
+export interface GitRawAPI {
+  body: {
+    args: string[];
+  };
+  response: {
+    result: string;
+  };
+}
+
+/**
+ * Git subcommands that are safe to run via /git/raw.
+ * Intentionally excludes push, pull, clone, remote, config, gc, and other
+ * operations that can affect the remote, global config, or be irreversible.
+ */
+const ALLOWED_SUBCOMMANDS = new Set([
+  "checkout",
+  "branch",
+  "stash",
+  "tag",
+  "log",
+  "show",
+  "diff",
+  "merge",
+  "cherry-pick",
+  "format-patch",
+  "describe",
+  "shortlog",
+  "rev-parse",
+  "rev-list",
+  "ls-files",
+  "ls-tree",
+  "cat-file",
+]);
+
+/**
+ * Flags that are blocked regardless of subcommand, as they can cause
+ * irreversible damage or break system-level git configuration.
+ */
+const BLOCKED_FLAGS = new Set([
+  "--force",
+  "-f",
+  "--hard",
+  "--global",
+  "--system",
+  "--exec",
+]);
+
+const validateRawArgs = (args: string[]): string | null => {
+  if (!args.length) return "No git arguments provided";
+
+  const subcommand = args[0];
+  if (!ALLOWED_SUBCOMMANDS.has(subcommand)) {
+    return `Subcommand "${subcommand}" is not allowed. Allowed: ${[...ALLOWED_SUBCOMMANDS].join(", ")}`;
+  }
+
+  const blockedFlag = args.find((arg) => {
+    if (arg.startsWith("--")) {
+      return BLOCKED_FLAGS.has(arg.split("=")[0]);
+    }
+    if (arg.startsWith("-") && arg.length > 1) {
+      return [...arg.slice(1)].some((ch) => BLOCKED_FLAGS.has(`-${ch}`));
+    }
+    return false;
+  });
+  if (blockedFlag) {
+    return `Flag "${blockedFlag}" is blocked`;
+  }
+
+  return null;
+};
+
 const abortRebase = async () => {
   await git.rebase({ "--abort": null });
   throw new Error(
@@ -751,6 +833,31 @@ interface Options {
   site: string;
 }
 
+export const gitRaw: Handler = async (c) => {
+  const { args } = (await c.req.json()) as GitRawAPI["body"];
+
+  const validationError = validateRawArgs(args);
+  if (validationError) {
+    return new Response(validationError, { status: 400 });
+  }
+
+  const result = await git.raw(args);
+
+  return Response.json({ result });
+};
+
+export const checkoutBranch: Handler = async (c) => {
+  const { branchName } = (await c.req.json()) as CheckoutBranchAPI["body"];
+
+  if (!branchName || !/^[a-zA-Z0-9_\-./]+$/.test(branchName)) {
+    return new Response("Invalid branch name", { status: 400 });
+  }
+
+  await git.checkoutLocalBranch(branchName);
+
+  return Response.json({ branch: branchName });
+};
+
 export const createGitAPIS = (options: Options) => {
   const app = new Hono();
 
@@ -761,6 +868,8 @@ export const createGitAPIS = (options: Options) => {
   app.post("/publish", publish(options));
   app.post("/discard", discard);
   app.post("/rebase", rebase);
+  app.post("/checkout-branch", checkoutBranch);
+  app.post("/raw", gitRaw);
 
   return app;
 };

daemon/mod.ts

@@ -17,8 +17,10 @@ export type {
 } from "./fs/common.ts";
 export type {
   CheckoutAPI,
+  CheckoutBranchAPI,
   GitDiffAPI,
   GitLogAPI,
+  GitRawAPI,
   GitStatusAPI,
   PublishAPI,
   RebaseAPI,