High Impact / Low Effort security hardening: removes plaintext database
password and API keys from appsettings.json and appsettings.Development.json.
Credential strings replaced with empty values; schema/structure retained.
Users must provide credentials via environment variables:
- KARTSELL_POSTGRES: database connection string
- KRX_OPENAPI: Korea Exchange API key (read from Gitea Secrets in CI)
- OPENDART_API: OpenDart API key (read from Gitea Secrets in CI)
- KIS_APP_KEY, KIS_APP_SECRET: Korea Investment & Securities (read from Gitea Secrets in CI)
See CLAUDE.md Quick Start section for setup instructions.
Verification: dotnet build src/KArtSell.Host/KArtSell.Host.csproj -c Release
0 warnings, 0 errors, builds successfully.
TECH_DEBT_REGISTER.md: DEBT-013 status updated from Deferred to Completed.
AGENTS.md compliance: #8 (Guardrails — credentials removed per security principle),
#12 (Right Way — security-first approach), #13 (Tech Debt — debt paydown 20%+ quarterly).
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
kjh2064
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