docs(credits): billingUrl examples match the live value

[sweetmantech]

Follow-up flagged on api#835/#836: the api returns billingUrl: "https://app.recoupable.dev" (the review decision on #835), but the 402 examples published by docs#299 say chat.recoupable.dev. Four one-line example-value fixes: credits.mdx plus openapi/{research,social,releases}.json. Verified all four specs still parse. Closes the last docs↔api mismatch in recoupable/chat#1960.

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Summary by cubic

Aligns all 402 examples to the live billingUrl the API returns. Old examples used https://chat.recoupable.dev; new examples use https://app.recoupable.dev to match production responses. No behavior or schema changes.

• Updated credits.mdx and api-reference/openapi/{releases,research,social}.json example values only.
• Verified all three OpenAPI specs still parse.
• No rollout or migration required.

^{Written for commit 159a044. Summary will update on new commits.}

Summary by CodeRabbit

• Documentation
  • Updated insufficient-credit response examples to direct users to the current billing URL.
  • Applied the updated URL consistently across release, research, and social API documentation.

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: ad58a7be-1dcd-4447-b8c0-d07f7ec038b4

📥 Commits

Reviewing files that changed from the base of the PR and between 2107f8b and 159a044.

📒 Files selected for processing (4)

• api-reference/openapi/releases.json
• api-reference/openapi/research.json
• api-reference/openapi/social.json
• credits.mdx

Included review availability: Your plan includes up to 1 review per rolling hour; 0 remain after this review.

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📝 Walkthrough

Walkthrough

The insufficient-credits billing URL now uses https://app.recoupable.dev in three OpenAPI specifications and the credits documentation.

Changes

Billing URL update

Layer / File(s)	Summary
Update billing URL references api-reference/openapi/releases.json, api-reference/openapi/research.json, api-reference/openapi/social.json, credits.mdx	The insufficient-credits billing URL examples now point to https://app.recoupable.dev.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: ⚪ Minimal · up to 159a0

This change only aligns four published billing URL examples with the live API value; no actionable merge-blocking risk remains beyond normal checks and review.

Suggested reviewers: arpitgupta1214

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: updating billingUrl examples to match the live API value.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/billing-url-app-domain

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[cubic-dev-ai]

No issues found across 4 files

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