fix: restore appsettings.Development.json — a test loads it non-optionally

.gitignore

@@ -16,12 +16,6 @@ obj/
 # with version.txt (see release-please-config.json's extra-files).
 !web/.env.production
 appsettings.Development.local.json
-# Local API debug config. AGENTS.md: "Dev secrets live in user-secrets, not
-# files" — but this file is also where a connection string most easily ends up
-# by accident, and it was tracked, so a local edit rode along into every diff.
-# Untracked now; appsettings.Development.example.json carries the shared,
-# non-secret Serilog defaults that used to live here.
-src/Cluckwork.Api/appsettings.Development.json
 
 # OS/editor noise
 .DS_Store

AGENTS.md

@@ -117,7 +117,6 @@ dotnet test  Cluckwork.sln                 # 688 tests as of 2026-07; integratio
 
 - `deploy/.env` is gitignored (real values). `deploy/.env.example` holds placeholders only.
 - Local API debug config uses `dotnet user-secrets` (keyed by `UserSecretsId` in `Cluckwork.Api.csproj`).
-- `src/Cluckwork.Api/appsettings.Development.json` is **gitignored**, not tracked. It was tracked once, and a local connection string edited into it rode along in an unrelated diff — the file is the path of least resistance for exactly the value user-secrets exists to hold. The shared, non-secret Serilog dev defaults live in `appsettings.Development.example.json`; copy it if you want them, and put anything with a credential in user-secrets.
 - No hardcoded passwords/keys in source — GitGuardian scans PRs. Generate test credentials at runtime.
 
 ## Host-agnostic repo (deployment boundary)