key and API address fall back to the person's secrets file; a non-git folder becomes a local_path project

bin/office

@@ -74,19 +74,33 @@ def create_project(name, folder, dry):
     Adopting a folder that Paperclip has never heard of needed two steps before:
     make the project in the browser, then run this command. One command is enough.
     """
+    # A folder that is a git repository gets a branch per task in its own
+    # worktree. A folder that is not cannot: asking for a worktree would create
+    # a project whose every run fails. Those keep the folder in place instead.
+    is_repo = subprocess.run(["git", "-C", folder, "rev-parse", "--is-inside-work-tree"],
+                             capture_output=True, text=True, timeout=30).stdout.strip() == "true"
     body = {
         "name": name,
         "description": "Adopted from %s by bin/office." % folder,
         "status": "backlog",
-        "workspace": {"name": name, "sourceType": "git_repo", "cwd": folder, "isPrimary": True},
-        "executionWorkspacePolicy": {
+        "workspace": {
+            "name": name,
+            "sourceType": "git_repo" if is_repo else "local_path",
+            "cwd": folder,
+            "isPrimary": True,
+        },
+    }
+    if is_repo:
+        body["executionWorkspacePolicy"] = {
             "enabled": True,
             "defaultMode": "isolated_workspace",
             "allowIssueOverride": True,
             "workspaceStrategy": {"type": "git_worktree", "baseRef": "main",
                                   "branchTemplate": "{{issue.identifier}}-{{slug}}"},
-        },
-    }
+        }
+    else:
+        h.say("  not a git repository: the project keeps the folder in place,")
+        h.say("  so a task changes these files directly. No branch, no worktree.")
     if dry:
         h.say("would create Paperclip project %r for %s" % (name, folder))
         return "(dry run)"