Add upload tool and related APIs (#187)

* Add utils for r2 upload

* Add the tool and new routes

* fix auth issue

* sign headers

* add comment

* use our own API key to auth signed uploads

* Restructure things slightly

* tweak

* tweak

* add comments

* tweak

* revert a thing

* twaek

* drop mime type filtering

* new incarnation of mime type filtering

* jsut allow all octet-streams

* simplify further

* tweak

* update lockfile

---------

Co-authored-by: Colin McDonnell <colinmcd94@gmail.com>

mcp/git.ts

@@ -6,7 +6,7 @@ import type { ToolContext } from "./server.ts";
 import { execute, tool } from "./shared.ts";
 
 export function CreateBranchTool(ctx: ToolContext) {
-  const defaultBranch = ctx.repo.repo.default_branch || "main";
+  const defaultBranch = ctx.repo.data.default_branch || "main";
 
   const CreateBranch = type({
     branchName: type.string.describe(
@@ -24,7 +24,7 @@ export function CreateBranchTool(ctx: ToolContext) {
     parameters: CreateBranch,
     execute: execute(async ({ branchName, baseBranch }) => {
       // baseBranch should always be defined due to default, but TypeScript needs help
-      const resolvedBaseBranch = baseBranch || ctx.repo.repo.default_branch || "main";
+      const resolvedBaseBranch = baseBranch || ctx.repo.data.default_branch || "main";
 
       // validate branch name for secrets
       if (containsSecrets(branchName)) {
@@ -142,7 +142,7 @@ export const PushBranch = type({
 });
 
 export function PushBranchTool(ctx: ToolContext) {
-  const defaultBranch = ctx.repo.repo.default_branch || "main";
+  const defaultBranch = ctx.repo.data.default_branch || "main";
 
   return tool({
     name: "push_branch",