AyCode.Core/docs/adr/0002-environment-infrastruc...

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# ADR 0002: Environment infrastructure lifted to the framework (BaseUrl, server data-environment, env badge) — cross-reference
## Status
Accepted (2026-07-15) — cross-reference; the full decision record lives in the consumer repo (see below).
## Cross-reference
**Primary ADR:** `FruitBankHybridApp/docs/adr/0002-environment-infrastructure-to-framework.md`
([relative link](../../../../../Mango/Source/FruitBankHybridApp/docs/adr/0002-environment-infrastructure-to-framework.md) — workspace layout dependent)
Same NNNN as the primary by design (adr-author skill, multi-repo rule: "under the same NNNN if possible") —
this is why 0002 is used here instead of max+1.
## Scope on this repo's side
The decision moves app-agnostic environment infrastructure from the consumer (FruitBank) into this framework,
executed stepwise (per-step review):
- **AyCode.Core** — `AcEnv.BaseUrl` (✅ done, 2026-07-15) and `AcEnv.IsProdDb` (+ `Set`/`Hydrated`/`Changed` event; planned):
single-source, fail-fast state; axis-separated naming (`IsProdDb` = data environment ≠ `IsProdBuild` = build config).
- **AyCode.Services** — framework-reserved tags in `AcSignalRTags` (query 90020 / announce 90021, GridLayout-roaming
precedent) + environment machinery in `AcSignalRClientBase` (first-connect gate, `EnsureEnvironmentAsync`,
fail-closed raw query, announce interception; **opt-in** via `EnvironmentFeatureEnabled => false` default).
- **AyCode.Services.Server** — hub-base push-on-connect announce from `AcEnv.IsProdDb` (best-effort).
- **AyCode.Blazor.Components** — `IAcAppTitleService` + browser implementation + `<AcEnvironmentTitleBadge>` component.
Consumer-side remains: domain constants, DB-catalog classification call-site, query endpoint implementation
(framework tag), MAUI title implementation, app name. Consumer facades delegate to `AcEnv` (zero-break migration).
## Related
- Related ADRs: primary record (see Cross-reference above).
- Related TODOs/Issues: `ACCORE-LOG-T-N2D8` (AcEnv.SetConfiguration synergy), `ACCORE-LOG-T-D7S3`,
`ACCORE-SBP-T-T5R2`, `ACBLAZOR-GRID-T-E3B6`.