chore: bootstrap cc-ci loop state

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

README.md

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+# cc-ci — Co-op Cloud recipe CI server
+
+Comment **`!testme`** on a PR in an enrolled Co-op Cloud recipe repo and cc-ci deploys the recipe
+at that commit onto a real single-node Docker Swarm, runs install / upgrade / backup-restore tests
+(Python + Playwright) end-to-end, and reports a live, tail-able run with pass/fail back to the PR.
+
+This repo declares the **entire server** as a NixOS flake and holds the test harness, the
+per-recipe test trees, and the docs to enroll a recipe or rebuild the box from scratch.
+
+> Status: under active autonomous construction. See `STATUS.md` for the live phase and
+> `plan.md`-driven milestones in `BACKLOG.md`. Definition of Done is D1–D10 (see the build plan).
+
+## Layout
+
+```
+flake.nix              NixOS host(s) + devshell
+hosts/cc-ci/           the cc-ci machine config
+modules/               drone, comment-bridge, swarm, dashboard, secrets (Nix modules)
+secrets/               sops-encrypted infra secrets
+bridge/                !testme webhook listener source
+runner/                run_recipe_ci.py + shared pytest harness
+dashboard/             results overview generator
+tests/<recipe>/        per-recipe install/upgrade/backup tests + playwright/
+docs/                  install, enroll-recipe, secrets, architecture, runbook, baseline
+```
+
+## Docs
+
+- `docs/install.md` — rebuild the server from scratch (D8)
+- `docs/enroll-recipe.md` — add a recipe under CI (D5)
+- `docs/secrets.md` — secret model + rotation (D6)
+- `docs/architecture.md`, `docs/runbook.md` — design + debugging failed runs
+- `docs/baseline.md` — bootstrap snapshot / rollback reference
+
+## Loop state (autonomous build)
+
+`STATUS.md` (phase/blockers), `BACKLOG.md` (work + adversary findings), `REVIEW.md` (independent
+verification), `JOURNAL.md` (build log), `DECISIONS.md` (architecture choices). See the build plan
+for the two-loop Builder/Adversary protocol.