ci(cloud-agent-next): add staging worker config

[RSO]

Summary

Adds an explicit staging Wrangler environment for services/cloud-agent-next so it can participate in the staging Worker deployment matrix without reusing production routes, queues, R2 buckets, or container capacity.

Verification

Manual verification was limited to local config inspection and Wrangler dry-run behavior; live Cloudflare resource checks were blocked because local Wrangler auth does not have access to the configured Kilo Cloudflare account.

Visual Changes

N/A

Reviewer Notes

This PR targets foamy-drip so the diff only contains the cloud-agent-next staging configuration layered on top of the staging deployment workflow PR.

The staging config points service bindings at staging-named dependencies (session-ingest-staging, git-token-service-staging, notifications-staging) so staging traffic is not silently routed to production workers. Those dependency deployments must exist before a live deploy can fully succeed.

[kilo-code-bot]

WARNING: Staging loses GitHub App installation lookup

This env removes the HYPERDRIVE binding, but prepareSession only resolves repository installations when Hyperdrive is configured (services/cloud-agent/src/router/handlers/session-prepare.ts, lines 96-144). Any staging caller that sends githubRepo without an explicit githubToken will now fail with GitHub token or active app installation required for this repository, so repo-backed staging sessions won't behave like production.

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Reply with @kilocode-bot fix it to have Kilo Code address this issue.

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (2 files)

• services/cloud-agent-next/wrangler.jsonc
• services/cloud-agent/wrangler.jsonc

Previous Review Summary (commit b82c40c)

Current summary above is authoritative. Previous snapshots are kept for context only.

Previous review (commit b82c40c)

Status: 1 Issue Found | Recommendation: Address before merge

Fix these issues in Kilo Cloud

Overview

Severity	Count
CRITICAL	0
WARNING	1
SUGGESTION	0

Issue Details (click to expand)

WARNING

File	Line	Issue
services/cloud-agent/wrangler.jsonc	231	Staging omits Hyperdrive, so prepareSession cannot resolve GitHub App installations for callers that do not pass a githubToken.

Other Observations (not in diff)

No additional findings outside the diff.

Files Reviewed (1 files)

• services/cloud-agent/wrangler.jsonc - 1 issue

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_{Reviewed by gpt-5.4-20260305 · 171,344 tokens}

_{Review guidance: REVIEW.md from base branch main}

[RSO]

Closing in favor of #4118, which is based directly on main and contains only the cloud-agent-next staging config change.