* docs: hoist Docker zero-install quickstart above npm install path
- Create docs/quickstart-snippet.md as canonical source for the
two-command flow (curl + docker compose up -d), wrapped in
<!-- quickstart-snippet-start/end --> markers
- Hoist the snippet into README.md immediately below the deprecation
banner, above all other install paths
- Rename old npm-only "## Quick Start" to "## Install on Host (npm)"
and move it below the Docker quickstart
* docs(docker): restructure README with zero-install first and migration section
- Reorder top-level sections: zero-install (canonical snippet with
markers), choosing an image, power-user ccs docker, prebuilt image,
connect your app to CLIProxy, migration, env vars, troubleshooting
- Add deprecation banner at the top pointing at the migration section
- Add ## Migration from ccs-dashboard:latest section with step-by-step
instructions covering compose down, data preservation, named volume
vs bind-mount path, and compose up with the new image
- Keep P1's Choosing an image table and P5's Connect Your App to
CLIProxy section intact, just repositioned
* test(docs): parity check for quickstart snippet across README files
Assert README.md and docker/README.md both contain the canonical
quickstart block verbatim, anchored by marker comments. Exits non-zero
and prints a diff on any drift.
* ci(docs): wire quickstart-parity test on push and PR
Runs tests/docs/quickstart-parity.sh on self-hosted runner whenever
docs/quickstart-snippet.md, README.md, docker/README.md, or the
test/workflow files themselves change. Fails fast on snippet drift.
