## Context

`AiOpsService.buildTaskPrompt(...)` already distinguishes two modes:

- `PAYLOAD_TARGETED`: diagnose the supplied alert payload.
- `AUTO_DISCOVERY`: discover active alerts first.

In payload-targeted mode, the prompt includes alert fields, but it does not provide a normalized retrieval query for `lookup_knowledge`. The Agent may still call the tool, but the exact query is left to model behavior.

## Goals / Non-Goals

**Goals:**

- Build a deterministic retrieval query from AIOps payload fields.
- Preserve the original payload fields in the prompt.
- Make the recommended knowledge query visible in prompt text for trace/debugging.
- Keep the Agent responsible for deciding when to call `lookup_knowledge`.

**Non-Goals:**

- Do not add automatic pre-Agent retrieval.
- Do not add verifier logic.
- Do not change tool invocation schema.
- Do not change L0/L1 retrieval internals.

## Decisions

### Decision 1: Prompt-Level Query Augmentation

Add a recommended knowledge query to the payload-targeted prompt instead of calling `lookup_knowledge` directly.

Rationale:

- The current AIOps flow is Agent-driven; tools remain explicit.
- Prompt-level augmentation is low risk and easy to inspect.
- It avoids introducing another hidden retrieval path that would complicate trace semantics.

Alternative considered: automatically call `lookup_knowledge` before invoking the Supervisor. This was rejected because it changes execution behavior and may create evidence that the Agent did not request.

### Decision 2: Preserve Original Query Terms

The generated query includes raw alert/service/symptom terms rather than replacing them with broad domains.

Rationale:

- Alert name, service name, severity, and symptom are high-value retrieval terms.
- Broad categories such as `infrastructure` are useful hints but should not replace concrete terms.

## Risks / Trade-offs

- [Risk] Prompt grows slightly longer. -> Mitigation: keep the query compact and skip blank fields.
- [Risk] The model may ignore the recommendation. -> Mitigation: make the instruction explicit and test prompt inclusion.
- [Risk] Query construction duplicates some summary fields. -> Mitigation: treat the retrieval query as a compact, tool-oriented view of the payload.