Preserve Slack harness context for live connector grounding

[jusso-dev]

What changed

• Parse and preserve the persisted agent harness mode, including slack, in the agent gateway.
• Route the durable runtime through one tested persisted-request parser.
• Add a fast regression proving Slack mode survives parsing.
• Add an integration regression proving a Slack run executes a synthetic non-mock Tawny connector query and records agent live-context metadata.

Root cause

The gateway's persisted-request Zod schema omitted harness. Zod stripped { harness: { mode: "slack" } } before live connector evidence loading. Slack transport and delivery succeeded, but Jessie received no Tawny, Kelpie, or UniFi evidence and produced ungrounded no-data replies.

Impact

Slack agent runs can now load governed live connector context without weakening organisation, capability, credential, or query-template controls.

Validation

• pnpm --dir apps/agent-gateway typecheck
• pnpm --dir apps/agent-gateway test -- src/runtime.integration.test.ts — 5 passed, 15 opt-in integration tests skipped without the database environment
• git diff --check

A live Yarn Digi Slack smoke will be run after homelab deployment.

Summary by CodeRabbit

• New Features

  • Added support for preserving request harness modes, including Slack, Hermes, MCP, CLI, and HTTP.
  • Slack-based runs can now load live connector data and retain associated request metadata.

• Bug Fixes

  • Improved persisted request handling to safely recognize harness details during runtime processing.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 5333b010-e8c8-477d-aea8-9e4430b8e48d

📥 Commits

Reviewing files that changed from the base of the PR and between 6690da4 and 146d19f.

📒 Files selected for processing (2)

• apps/agent-gateway/src/runtime.integration.test.ts
• apps/agent-gateway/src/runtime.ts

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📝 Walkthrough

Walkthrough

The durable runtime now shares persisted-request parsing through an exported Zod-backed helper that supports harness modes. Integration tests validate Slack harness preservation and connector evidence loading through a local HTTP connector and durable run.

Changes

Runtime harness support

Layer / File(s)	Summary
Persisted request parsing contract apps/agent-gateway/src/runtime.ts, apps/agent-gateway/src/runtime.integration.test.ts	Adds shared persisted-request parsing with optional harness modes and verifies Slack mode survives parsing.
Slack connector evidence integration apps/agent-gateway/src/runtime.integration.test.ts	Adds target-agent room selection and an end-to-end Slack durable-run test covering encrypted credentials, connector responses, query results, metadata, and cleanup.

Estimated code review effort: 3 (Moderate) | ~25 minutes

Possibly related PRs

• jusso-dev/Muster#41: Related durable runtime persisted-request parsing changes.
• jusso-dev/Muster#42: Related Slack harness and runtime request metadata changes.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch agent/preserve-slack-harness-context

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