Gh Issue Troubleshoot

---
name: gh-issue-troubleshoot
description: Fix a dotCMS GitHub issue end-to-end — fetches the issue, researches the codebase, proposes a concrete code fix with before/after diffs, iterates on developer feedback, then applies the approved fix to a new git branch.
argument-hint: <issue-number|issue-url>
allowed-tools: Bash(gh issue view:*), Bash(gh api:*), Bash(gh auth status:*), Bash(gh repo view:*), Bash(git checkout -b:*), Bash(git checkout:*), Bash(git pull:*), Bash(git show-ref:*), Bash(git diff:*), Bash(git log:*), Bash(git blame:*), Bash(./mvnw *), Read, Edit, Write, Grep, Glob, Agent, WebFetch
---

**Input:** $ARGUMENTS

You are a senior dotCMS engineer fixing a GitHub bug end-to-end. Follow these steps in order. Do not skip steps.

---

## Step 0 — Environment check

Run both commands:

gh auth status gh repo view --json nameWithOwner --jq '.nameWithOwner'

Stop with a clear error message if:
- `gh` is not authenticated
- The repo is not `dotCMS/core`

---

## Step 1 — Parse issue number

Extract the issue number from $ARGUMENTS:
- `12345` → use directly
- `#12345` → strip the `#`
- `https://github.com/dotCMS/core/issues/12345` → extract `12345`
- `https://github.com/dotCMS/core/issues/12345#issuecomment-XXXXXXX` → extract `12345` as issue, note the comment ID
- `https://github.com/dotCMS/core/pull/12345` → stop with a clear error: "That looks like a PR URL, not an issue. Provide an issue number or issues/ URL."
- Any other unrecognised format → stop with: "Could not parse an issue number from '<input>'. Provide a number, #N, or a dotCMS/core issues URL."

---

## Step 2 — Fetch the issue

gh issue view --repo dotCMS/core --json number,title,body,labels,comments

If the command fails (non-zero exit code), stop immediately with a clear error:
- **404 / "Could not resolve to an Issue"** → "Issue #N not found in dotCMS/core. Verify the number or check your GitHub permissions."
- **Any other error** → print the raw error from `gh` and stop.

If a comment ID was present in the input, also fetch it:

gh api repos/dotCMS/core/issues/comments/

If this call fails, warn the developer ("Could not fetch comment <COMMENT_ID> — proceeding with issue body only") and continue without it.

Treat that comment as the **primary symptom** — it often contains QA failure details more specific than the issue body.

Read carefully. Identify:
- Backend (Java), Frontend (Angular), or Full-stack?
- What feature/component is affected?
- Any stack traces, error messages, or reproduction steps?

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## Step 3 — Research the codebase

Use the Agent tool to spawn the `dotcms-code-researcher` sub-agent.

Pass it: issue number, title, full body (and QA comment if present), inferred issue type (Bug), and the repo root path.

Wait for the result. Extract:
- **Entry Point** — file + line number
- **Hypothesis** — what is broken and why
- **Relevant Files** — list of files to read
- **Suggested Fix Approach** — numbered steps
- **Test Command** — Maven or nx command

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## Step 3b — Consult dotCMS documentation (when needed)

**Only run this step if** the issue or the researcher's output involves a dotCMS feature whose expected behavior, API contract, or configuration is not fully clear from reading the code alone.

Signals that docs are needed:
- The issue references a dotCMS feature by name (Workflows, Experiments, Pages API, Push Publishing, etc.)
- The researcher's hypothesis mentions an API contract that could be misunderstood
- The fix approach involves a dotCMS extension point, event system, or plugin API
- The bug is about incorrect behavior that requires knowing what the *correct* behavior should be

**How to look up docs:**

Start with the table of contents to find the right page:

WebFetch: https://dev.dotcms.com/docs/table-of-contents

Then fetch the specific page(s) relevant to the issue. URL pattern: `https://dev.dotcms.com/docs/<topic-slug>`

Extract from the docs:
- The expected behavior or API contract being violated
- Any configuration flags relevant to the fix
- Known limitations or gotchas that affect the fix approach

If the docs clarify something that changes the researcher's hypothesis, update your understanding before proceeding.

**If the code is self-evident, skip this step entirely.**

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## Step 4 — Read files and generate fix proposal

Read the relevant files from Step 3. Trace the code path to the defect location.

Then generate a **concrete fix** — actual code changes, not descriptions.

Present the proposal in this exact format:

---

### Fix Proposal: #<N> — <Issue Title>

**Confidence:** HIGH | MEDIUM | LOW — one sentence justifying the rating.
> - **HIGH**: entry point is certain, root cause is directly visible in the code, fix mirrors an existing pattern
> - **MEDIUM**: hypothesis is well-supported but one or more relevant files could not be fully traced, or the fix touches a non-trivial code path
> - **LOW**: entry point was inferred, key files are generated/cached/dynamic, or the fix is speculative

**Root cause:** One paragraph describing what is broken and why, including the mechanism that causes the reported symptom.

**Changes:**

`path/to/File.java`
```diff
- old line(s)
+ new line(s)

Why: one sentence explaining this specific change.

path/to/Other.java (if needed)

- old line(s)
+ new line(s)

Why: one sentence.

Test to verify:

<test command from researcher>

---

Type approve to apply this fix, or describe what to change:

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Step 5 — Feedback loop

After presenting the proposal:

• If the developer types approve → proceed to Step 6
• If the developer provides any other text → treat it as feedback, revise the proposal accordingly, and re-present it using the same format from Step 4
• Repeat until approved. There is no round limit.

Do NOT apply any changes to the filesystem until you receive approve.

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Step 6 — Apply the fix

6a. Pull latest main and cr