# Concelier · AGENTS Charter (Sprint 0112–0114)

## Module Scope & Working Directory
- Working directory: `src/Concelier/**` (WebService, __Libraries, Storage.Mongo, analyzers, tests, seed-data). Do not edit other modules unless explicitly referenced by this sprint.
- Mission: Link-Not-Merge (LNM) ingestion of advisory observations, correlation into linksets, evidence/export APIs, and deterministic telemetry.

## Roles
- **Backend engineer (ASP.NET Core / Mongo):** connectors, ingestion guards, linkset builder, WebService APIs, storage migrations.
- **Observability/Platform engineer:** OTEL metrics/logs, health/readiness, distributed locks, scheduler safety.
- **QA automation:** Mongo2Go + WebApplicationFactory tests for handlers/jobs; determinism and guardrail regression harnesses.
- **Docs/Schema steward:** keep LNM schemas, API references, and inline provenance docs aligned with behavior.

## Required Reading (must be treated as read before setting DOING)
- `docs/README.md`
- `docs/07_HIGH_LEVEL_ARCHITECTURE.md`
- `docs/modules/platform/architecture-overview.md`
- `docs/modules/concelier/architecture.md`
- `docs/modules/concelier/link-not-merge-schema.md`
- `docs/provenance/inline-dsse.md` (for provenance anchors/DSSE notes)
- `docs/modules/concelier/prep/2025-11-22-oas-obs-prep.md` (OAS + observability prep)
- `docs/modules/concelier/prep/2025-11-20-orchestrator-registry-prep.md` (orchestrator registry/control contracts)
- Any sprint-specific ADRs/notes linked from `docs/implplan/SPRINT_0112_0001_0001_concelier_i.md`, `SPRINT_0113_0001_0002_concelier_ii.md`, or `SPRINT_0114_0001_0003_concelier_iii.md`.

## Working Agreements
- **Aggregation-Only Contract (AOC):** no derived semantics in ingestion; enforce via `AOCWriteGuard` and analyzers. Raw observations are append-only; linksets carry correlations/conflicts only.
- **Determinism:** use canonical JSON writer; sort collections (fieldType, observationPath, sourceId) for cache keys; UTC ISO-8601 timestamps; stable ordering in exports/events.
- **Offline-first:** avoid new external calls outside allowlisted connectors; feature flags must default safe for air-gapped deployments (`concelier:features:*`).
- **Tenant safety:** every API/job must enforce tenant headers/guards; no cross-tenant leaks.
- **Schema gates:** LNM schema changes require docs + tests; update `link-not-merge-schema.md` and samples together.
- **Cross-module edits:** none without sprint note; if needed, log in sprint Execution Log and Decisions & Risks.

## Coding & Observability Standards
- Target **.NET 10**; prefer latest C# preview features already enabled in repo.
- Mongo driver ≥ 3.x; canonical BSON/JSON mapping lives in Storage.Mongo.
- Metrics: use `Meter` names under `StellaOps.Concelier.*`; tag `tenant`, `source`, `result` as applicable. Counters/histograms must be documented.
- Logging: structured, no PII; include `tenant`, `source`, `job`, `correlationId` when available.
- Scheduler/locks: one lock per connector/export job; no duplicate runs; honor `CancellationToken`.

## Testing Rules
- Write/maintain tests alongside code:
  - Web/API: `StellaOps.Concelier.WebService.Tests` with WebApplicationFactory + Mongo2Go fixtures.
  - Core/Linkset/Guards: `StellaOps.Concelier.Core.Tests`.
  - Storage: `StellaOps.Concelier.Storage.Mongo.Tests` (use in-memory or Mongo2Go; determinism on ordering/hashes).
  - Observability/analyzers: tests in `__Analyzers` or respective test projects.
- Tests must assert determinism (stable ordering/hashes), tenant guards, AOC invariants, and no derived fields in ingestion.
- Prefer seeded fixtures under `seed-data/` for repeatability; avoid network in tests.

## Delivery Discipline
- Update sprint tracker status (`TODO → DOING → DONE/BLOCKED`) when you start/finish/block work; mirror decisions in Execution Log and Decisions & Risks.
- If a design decision is needed, mark the task `BLOCKED` in the sprint doc and record the decision ask—do not pause the codebase.
- When changing contracts (APIs, schemas, telemetry, exports), update corresponding docs and link them from the sprint Decisions & Risks section.