ref(create-pr): Extract PR template retrieval to script

[szokeasaurusrex]

Move the conditional PR template logic from SKILL.md instructions into a deterministic bash script.

Previously, the skill instructed the LLM to run gh repo view --json pullRequestTemplates and interpret whether a template exists. This relied on the LLM correctly handling empty/null output.

Now, a script handles this logic deterministically:

• Fetches the repo's PR template via gh
• Falls back to the default template if none exists
• Outputs the appropriate template for the LLM to follow

This makes the template retrieval reliable and testable.

---

Stacked on #18

🤖 Generated with Claude Code

[sentry]

Bug: The script incorrectly handles missing PR templates. jq outputs a literal "null" string, which the -n check considers non-empty, preventing the fallback template from being used.
_{Severity: MEDIUM}

🔍 Detailed Analysis

The script at get-pr-template.sh uses jq to fetch a pull request template. When no template exists, jq without the -r flag outputs the literal string "null". The subsequent check if [ -n "$template" ] incorrectly evaluates to true because the string "null" is not empty. As a result, the script echoes the literal string null to the user, and the intended fallback logic to provide a default template is never executed. This occurs whenever a repository lacks a pull request template, defeating the purpose of the fallback.

💡 Suggested Fix

Modify the jq command to handle null values correctly. Either add the -r (raw output) flag, which converts null to an empty string, or use a jq filter that explicitly converts null to an empty string, such as .pullRequestTemplates[0].body // empty. This will ensure the [ -n "$template" ] check fails as expected, triggering the fallback logic.

🤖 Prompt for AI Agent

Review the code at the location below. A potential bug has been identified by an AI
agent.
Verify if this is a real issue. If it is, propose a fix; if not, explain why it's not
valid.

Location: plugins/sentry-skills/skills/create-pr/scripts/get-pr-template.sh#L4-L7

Potential issue: The script at `get-pr-template.sh` uses `jq` to fetch a pull request
template. When no template exists, `jq` without the `-r` flag outputs the literal string
`"null"`. The subsequent check `if [ -n "$template" ]` incorrectly evaluates to true
because the string `"null"` is not empty. As a result, the script echoes the literal
string `null` to the user, and the intended fallback logic to provide a default template
is never executed. This occurs whenever a repository lacks a pull request template,
defeating the purpose of the fallback.

_{Did we get this right? 👍 / 👎 to inform future reviews.
Reference ID: 8536186}

[szokeasaurusrex]

Closing this PR - on further reflection, moving the fallback template to a script removes it from context when a repo has a template, which is undesirable. The original approach in #18 (keeping the fallback inline in SKILL.md) ensures the guidance is always available, and can also be considered when a template is in place.

The script doesn't add enough value to justify the extra file.

_{🤖 This comment is partially AI-generated}