fix: Update agent PR creation logic to url encode parameters

.github/agent-sops/task-implementer.sop.md

@@ -252,11 +252,9 @@ If all tests are passing, draft a conventional commit message, perform the git c
   - You MUST give an overview of the feature being implemented
   - You MUST include any notes on key implementation decisions, ambiguity, or other information as part of the pull request description
 - If the `create_pull_request` tool fails (excluding deferred responses):
-  - You MUST create a PR creation link using GitHub's query parameters
-  - You MUST post the link as a comment on the issue
-    - You MUST use the format: `https://github.com/{owner}/{repo}/compare/{base}...{head}?quick_pull=1&title={url_encoded_title}&body={url_encoded_body}`
-    - URL-encode the title and body parameters
-    - Include "Resolves: #{issue_number}" in the body
+    - The tool automatically handles fallback by posting a properly URL-encoded manual PR creation link as a comment on the specified fallback issue
+    - You MUST verify the fallback comment was posted successfully by checking the tool's return message
+    - You MUST NOT manually construct PR creation URLs since the tool handles URL encoding automatically
 - If PR creation succeeds or is deferred:
   - You MUST review your notes for any updates to provide on the pull request
   - You MAY use the `update_pull_request` tool to update the pull request body or title

.github/scripts/python/github_tools.py

@@ -65,6 +65,7 @@
 from functools import wraps
 import json
 from typing import Any, TypedDict
+from urllib.parse import urlencode, quote
 
 import requests
 from rich import box
@@ -363,9 +364,15 @@ def create_pull_request(title: str, head: str, base: str, body: str = "", repo:
             agent_message = "Failed to create pull request, commenting on issue instead."
             console.print(Panel(escape(agent_message), title="[bold yellow]Fallback", border_style="yellow"))
             repo_name = repo or os.environ.get("GITHUB_REPOSITORY", "")
-            pr_link = f"https://github.com/{repo_name}/compare/{base}...{head}?quick_pull=1&title={title.replace(' ', '%20')}&body={body.replace(' ', '%20').replace('\n', '%0A')}"
-            fallback_comment = f"Failed to create pull request, you can create it by clicking this link:\n\n{pr_link}"
-            return add_issue_comment(fallback_issue_id, fallback_comment, repo)
+            query_params = urlencode({
+                'quick_pull': '1',
+                'title': title,
+                'body': body
+            }, quote_via=quote)
+            pr_link = f"https://github.com/{repo_name}/compare/{base}...{head}?{query_params}"
+            fallback_comment = f"Unable to create pull request via API. You can create it manually by clicking [here]({pr_link})."
+            add_issue_comment(fallback_issue_id, fallback_comment, repo)
+            return f"Unable to create pull request via API - posted a manual creation link as a comment on issue #{fallback_issue_id}"
         else:
             error_msg = f"Error: {e!s}"
             console.print(Panel(escape(error_msg), title="[bold red]Error", border_style="red"))