Fix review posting timeouts.

.claude/skills/address-review/SKILL.md

@@ -23,11 +23,16 @@ That variable is the whole of the addressing. It names **this tab's** review, so
 there is no repository to pass and no way to address comments meant for another
 worktree.
 
-Give every call a deadline — `--max-time 30`. The server runs `git` for some of
-these, and a repository being built in another pane can make that slow; a curl
-with no deadline turns that into a tool timeout that says nothing about what
-went wrong. If one does trip, say so and try once more rather than treating it
-as a missing review: the answer was late, not absent.
+Give every call a deadline — `--max-time 30` — so a hung request comes back as
+a curl error rather than a tool timeout that says nothing about what went wrong.
+Every call should answer in well under a second; one that hits the deadline
+means something is wrong, not that the server is busy.
+
+Send every POST with a body, even an empty one (`-d ''`). Without one curl sends
+no `Content-Length`, and older playpen builds wait for a body that never comes:
+the change is applied, but the response never arrives. If a write does time
+out, re-read the comments before retrying: it has probably already landed, and
+posting it again leaves a duplicate.
 
 If it is empty — you are running outside playpen, or in a shell started before
 the server came up — discover it instead:
@@ -102,7 +107,7 @@ For every pending comment, in order:
 4. **Resolve the thread** once it's fully handled (skip if you asked a question):
 
    ```bash
-   curl -s --max-time 30 -X POST "$BASE/api/comments/<id>/resolve"
+   curl -s --max-time 30 -X POST "$BASE/api/comments/<id>/resolve" -d ''
    ```
 
 Replies and resolutions appear in the review pane immediately over its live