fix: replace expired Slack invite link with workspace URL (#1413)

The shared_invite link (zt-36pj9bu5s) expired — Slack kills these
after 30 days. Pointed all three occurrences at the workspace URL
instead, which doesn't expire.

Fixes #1383

.github/ISSUE_TEMPLATE/config.yml

@@ -4,5 +4,5 @@ contact_links:
     url: https://github.com/SWE-agent/SWE-agent/issues/new
     about: None of the above? Open a blank issue
   - name: Slack server
-    url: https://join.slack.com/t/swe-bench/shared_invite/zt-36pj9bu5s-o3_yXPZbaH2wVnxnss1EkQ
+    url: https://swe-bench.slack.com
     about: Open ended discussions

README.md

@@ -6,7 +6,7 @@
 
 <p align="center">
 <a href="https://swe-agent.com/latest/"><img src="https://img.shields.io/badge/Docs-green?style=for-the-badge&logo=materialformkdocs&logoColor=white" alt="Docs"></a>
-<a href="https://join.slack.com/t/swe-bench/shared_invite/zt-36pj9bu5s-o3_yXPZbaH2wVnxnss1EkQ"><img src="https://img.shields.io/badge/Slack-4A154B?style=for-the-badge&logo=slack&logoColor=white" alt="Slack"></a>
+<a href="https://swe-bench.slack.com"><img src="https://img.shields.io/badge/Slack-4A154B?style=for-the-badge&logo=slack&logoColor=white" alt="Slack"></a>
 <a href="https://arxiv.org/abs/2405.15793"><img src="https://img.shields.io/badge/arxiv-2405.15793-red?style=for-the-badge&logo=arxiv&logoColor=white&labelColor=black" alt="arxiv 2405.15793"></a>
 </p>
 

docs/_footer.md

@@ -9,7 +9,7 @@
     </div>
   </a>
 
-  <a href="https://join.slack.com/t/swe-bench/shared_invite/zt-36pj9bu5s-o3_yXPZbaH2wVnxnss1EkQ" class="nav-card-link">
+  <a href="https://swe-bench.slack.com" class="nav-card-link">
     <div class="nav-card">
       <div class="nav-card-header">
         <span class="material-icons nav-card-icon">help</span>