Follow the house shell conventions

Constants UPPER_SNAKE, mutable locals PascalCase, braced expansions
throughout, per Development/Coding conventions in the vault.

docs/active-context.md

@@ -15,3 +15,20 @@ update may re-add it; if it's still done, just delete it again.)
 - Publishing public releases to a separate GitHub repo → `ai-context/infrastructure/gitea-to-github-release.md`
 - Uploading build artifacts to Cloudflare R2 from CI → `ai-context/services/cloudflare-r2.md`
 - CI success/failure notifications via ntfy → `ai-context/services/ntfy.md`
+
+## This project
+
+- **What this repo is, how it is installed, troubleshooting** → `docs/OPERATIONS.md`
+- **Non-obvious gotchas in this codebase** (health endpoint, `eval` pitfall,
+  importing `cd-target`) → `docs/hints.md`
+- **Design, targets, networking, deployment status** → MCP vault,
+  `Home IT/Services/CD webhook (fleet deployment).md`
+- **Why this exists, how to add a project, testing without a host** → MCP vault,
+  `Development/CD webhook development.md`
+- **What a correct domaindingo deploy is** — this repo automates it, that note
+  defines it → MCP vault, `Development/DomainDingo Development.md`
+- **Shell style for this repo** (constants `UPPER_SNAKE`, locals `PascalCase`,
+  braced expansions) → MCP vault, `Development/Coding conventions.md`
+
+Before adding a deploy script to any application repository: don't. Add a target
+to `targets.json` here instead.