Add scripts-to-rule-them-all scaffold (closes #4)

Adopt the Scripts to Rule Them All standard for this Hugo site:

- script/ POSIX-sh entrypoints (bootstrap, setup, projectname, test,
  lint, fmt, fmt-check, check, docker, cibuild, precommit,
  install-precommit). The correctness check (test/lint) is a clean
  `hugo --minify` production build; fmt/fmt-check run prettier over the
  repo's own top-level markdown only, leaving content/ untouched.
- Makefile targets reduced to thin shims that call script/NAME, plus a
  convenience serve target for `hugo server`.
- Dockerfile on a sha256-pinned alpine base that installs deps via
  script/bootstrap and runs `make check`, so the image build fails on
  any formatting or Hugo build error; .dockerignore added.
- .gitea/workflows/check.yml runs script/cibuild on push.
- README Entrypoints section documenting the scripts.

README.md

@@ -4,7 +4,8 @@ Las Vegas Meshtastic and LoRa community website.
 
 ## About
 
-This site provides information about the Las Vegas mesh networking community, including:
+This site provides information about the Las Vegas mesh networking community,
+including:
 
 - Mesh channel configurations
 - Community coordination (Discord, Signal)
@@ -13,11 +14,13 @@ This site provides information about the Las Vegas mesh networking community, in
 
 ## Contributing
 
-To contribute to this site, contact **sneak@sneak.berlin** for git repository access.
+To contribute to this site, contact **sneak@sneak.berlin** for git repository
+access.
 
 ## Technical Details
 
-This is a static site built with Hugo. The site is deployed automatically via GitHub Actions.
+This is a static site built with Hugo. The site is deployed automatically via
+GitHub Actions.
 
 ### Local Development
 
@@ -35,6 +38,32 @@ hugo
 
 Output will be in the `public/` directory.
 
+## Entrypoints
+
+This repository adheres to the
+[Scripts to Rule Them All](https://github.com/github/scripts-to-rule-them-all)
+standard: normalized scripts in `script/` are the entrypoints for the
+development workflow, and the Makefile targets are thin shims that call them. We
+provide:
+
+- `script/bootstrap` — install all build dependencies (git, make, hugo,
+  node/npm) idempotently
+- `script/setup` — prepare a fresh clone: run `script/bootstrap` and install the
+  git pre-commit hook
+- `script/test` — the correctness check: a clean `hugo --minify` production
+  build
+- `script/lint` — a clean build that surfaces broken links and path collisions
+- `script/fmt` — format the repo's own top-level markdown docs with prettier
+- `script/fmt-check` — check that formatting (read-only)
+- `script/check` — run `script/fmt-check` then `script/test`; modifies nothing
+- `script/docker` — build the Docker image tagged with the project name
+- `script/cibuild` — the CI build (`docker build .`); the Dockerfile runs
+  `make check`
+- `script/install-precommit` — install the git pre-commit hook that runs
+  `script/check`
+
+A convenience `make serve` target runs `hugo server` for local preview.
+
 ## License
 
 Content is provided as-is for community use.