chore: Add config with AGENTS.md context and opt-out label for greptile

[charlesvien]

Problem

Greptile reviews this repo with no per-repo config, so it ignores our architecture rules. I'm matching this with the monorepo.

Changes

1. Add greptile.json at repo root
2. Feed AGENTS.md into every review via customContext.files
3. Opt out per PR by applying the "No Greptile" label

How did you test this?

manually

Publish to changelog?

no

[charlesvien]

• chore: Add config with AGENTS.md context and opt-out label for greptile #2400 👈 (View in Graphite)
• feat: Update usage limit modal for Pro users #2399
• docs: Deep links docs update #2398
• main

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[greptile-apps]

T-Rex Logs

What T-Rex did

• Validated the new Greptile config shape against the documented config contract and confirmed that disabledLabels is supported and the No Greptile opt-out should work, and that customContext.files is documented as file objects with a path field rather than a bare string.
• Read greptile.json and cross-checked it against official docs, noting the discrepancy where AGENTS.md would not be picked up because customContext.files is an array of objects with a path, and confirming case-insensitive label matching with globs for No Greptile.

Artifacts

Greptile config schema validation notes

• Documents validation of the Greptile config against the contract, including disabledLabels handling and the required shape for customContext.files.

Greptile docs cross-check and URLs evidence

• Summarizes the greptile.json read, official-docs comparison, and URLs checked to verify the exact corrected shape.

_{Ran code and verified through T-Rex}

Prompt To Fix All With AI

Fix the following 1 code review issue. Work through them one at a time, proposing concise fixes.

---

### Issue 1 of 1
greptile.json:4
**Use file objects** `customContext.files` is documented as an array of file objects with a `path` field, but this config passes `AGENTS.md` as a bare string. That can leave the file reference ignored or rejected, so reviews would not receive the architecture context this PR is trying to add.

```suggestion
        "files": [{ "path": "AGENTS.md" }]
```

_{Reviews (1): Last reviewed commit: "fix greptile.json indentation to 2 space..." | Re-trigger Greptile}

[charlesvien]

Merge activity

• May 28, 1:10 AM UTC: A user started a stack merge that includes this pull request via Graphite.
• May 28, 1:19 AM UTC: Graphite rebased this pull request as part of a merge.
• May 28, 1:24 AM UTC: @charlesvien merged this pull request with Graphite.