fix(uat-tester): remove one-shot script and batch examples.json update

- Delete scripts/fix_uat_tester.py: one-off patch script with a
  hardcoded /tmp path that no longer exists. Per CONTRIBUTING.md,
  scripts/ is for ongoing-purpose utilities, not development artifacts.

- Remove update_examples_json() from create_documentation_pr(): each
  per-PR call was modifying examples.json inside the git clone, causing
  merge conflicts when parallel UAT workers created docs PRs
  simultaneously. Option A from reviewer: move the call outside the PR
  creation function entirely.

- Add batch update_examples_json(documented_examples) call after the
  inner docs-PR creation loop completes, guarded by `if documented_examples`.
  This runs once per cycle instead of once per PR, eliminating the
  examples.json conflict surface for parallel workers.

- Expand CHANGELOG entry to reflect the examples.json fix.

ISSUES CLOSED: #4374

.opencode/agents/uat-tester.md

@@ -677,6 +677,12 @@ LOOP:
                     documented_examples.append(example_candidate)
                     update_examples_index(example_candidate)
 
+        # Batch-update examples.json once after all docs PRs for this cycle are
+        # created. Keeping this outside create_documentation_pr() avoids
+        # per-PR merge conflicts when parallel UAT workers run simultaneously.
+        if documented_examples:
+            update_examples_json(documented_examples)
+
         tested_features.add(feature)
 
     # ── After testing all features in area — exit ────────────────
@@ -876,9 +882,6 @@ def create_documentation_pr(doc_path, doc_content, example):
     mkdir -p $(dirname doc_path)
     write_file(doc_path, doc_content)
     
-    # Update examples.json index
-    update_examples_json(example)
-    
     # Commit changes
     git add .
     commit_msg = f"docs: add {example['category']} example - {example['feature']}"

CHANGELOG.md

@@ -481,11 +481,13 @@ _ALL_DATA_COLUMNS + ") " "SELECT " + _ALL_DATA_COLUMNS + " FROM v3_plans"`.
 
 ### Fixed
 
-- **UAT tester docs PR duplicate detection** (#5768): Fixed two bugs in the
+- **UAT tester docs PR duplicate detection and examples.json conflict fix** (#5768): Fixed two bugs in the
   `create_documentation_pr()` function of the uat-tester agent that caused
   documentation PRs to be skipped: branch-existence guard incorrectly treated
   error responses as success, and open-PR duplicate check missed owner prefix.
-  Resolves merge conflicts from parallel UAT worker documentation PRs.
+  Removed `update_examples_json()` from `create_documentation_pr()` and moved
+  it to a single batch call after all docs PRs are created per cycle, eliminating
+  merge conflicts on `examples.json` when parallel UAT workers run simultaneously.
 
 - **`invariant_enforced` decisions not propagated to child plans on subplan spawn** (#9131):
   Fixed `SubplanService.spawn()` to propagate all `invariant_enforced` decisions from the

scripts/fix_uat_tester.py

@@ -1,26 +0,0 @@
-#!/usr/bin/env python3
-"""Patch script to fix uat-tester documentation PR duplicate bugs."""
-
-FILE_PATH = (
-    "/tmp/implementation-worker-1776852370/repo/.opencode/agents/uat-tester.md"
-)
-with open(FILE_PATH) as f:
-    content = f.read()
-
-# Fix branch-existence guard bug
-content = content.replace(
-    "existing_branch.get('error')",
-    "existing_branch.get('errors')",
-)
-
-# Fix open-PR check — add owner prefix to head param (long URL, noqa E501)
-content = content.replace(
-    'f"/repos/{owner}/{repo}/pulls?state=open&head={branch_name}"'
-    "&limit=5\"",
-    'f"/repos/{owner}/{repo}/pulls?state=open&head={owner}:{branch_name}"'
-    "&limit=5\"",
-)
-
-with open(FILE_PATH, "w") as f:
-    f.write(content)
-print("Fixed both bugs")