fix(worker): kept worktree in a company repo opens a PR, unexpected ADO/git errors never fail a task start

src/ClaudeDo.Worker/Runner/WorktreeManager.cs

@@ -282,8 +282,17 @@ public sealed class WorktreeManager
             .Select(c => c.BaseBranch)
             .FirstOrDefaultAsync(ct)).NullIfBlank();
 
-        if (isCompany && await FetchCompanyBaseAsync(workingDir, baseBranch, ct) is { } fetched)
-            return fetched;
+        if (isCompany)
+        {
+            try
+            {
+                if (await FetchCompanyBaseAsync(workingDir, baseBranch, ct) is { } fetched) return fetched;
+            }
+            catch (Exception ex) when (ex is not OperationCanceledException)
+            {
+                _logger.LogWarning(ex, "Fetching the company base in {working_dir} failed, continuing with the local branch", workingDir);
+            }
+        }
 
         return baseBranch is null
             ? await _git.RevParseHeadAsync(workingDir, ct)
@@ -304,7 +313,7 @@ public sealed class WorktreeManager
         if (basis is null && _azdo is not null && pat is not null && AzureDevOpsClient.ParseRemote(remote) is { } repo)
         {
             try { basis = await _azdo.GetDefaultBranchAsync(repo, ct); }
-            catch (AzureDevOpsException ex) { _logger.LogWarning("Default branch from Azure DevOps unavailable: {reason}", ex.Message); }
+            catch (Exception ex) when (ex is AzureDevOpsException or InvalidOperationException) { _logger.LogWarning("Default branch from Azure DevOps unavailable: {reason}", ex.Message); }
         }
         basis ??= await _git.GetRemoteHeadBranchAsync(workingDir, ct);
         if (basis is null)