docs(1b): record W0 lint decisions (DECISIONS) + claim W0 gate (STATUS/JOURNAL)

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

JOURNAL-1b.md

@@ -22,3 +22,44 @@ Lint-target inventory: 14 `.nix`, 32 `.py`, 1 `.sh` (`scripts/bootstrap-drone-oa
 
 Next: W0 — add the `lint` devshell + entrypoint + tool configs to the flake; auto-format; fix
 findings; wire the `.drone.yml` lint stage.
+
+## 2026-05-27 — W0 built: lint toolchain + format + drone stage
+
+Added (commits 2cede01 format/fixes, 4af427c drone stage, + tooling commits):
+- `flake.nix`: `lint` devshell (`nix develop .#lint`) = nixpkgs-fmt, statix, deadnix, ruff,
+  shellcheck, shfmt, yamllint, built from the already-pinned nixpkgs (no registry/network surprise —
+  `nix build <pin>#ruff` resolves from cache.nixos.org). Default devshell also gets them.
+- `scripts/lint.sh` (check / `--fix`), `ruff.toml`, `.yamllint.yaml`.
+- `.drone.yml`: a `lint` step in the `event: push` pipeline running
+  `nix develop .#lint --command bash scripts/lint.sh` (FAILs the build on any unclean file).
+
+Format/lint cleanup (semantics-preserving): ruff format on all 32 .py; nixpkgs-fmt drone-runner.nix;
+shfmt scripts; ruff SIM105/SIM115 (contextlib.suppress / `with open`); statix (merge sops
+`secrets.*`, empty-pattern → `_`); deadnix (drop unused `self`/`lib`/overlay `final`).
+
+Verification (on cc-ci, clean tar'd checkout /tmp/ccci-lint):
+```
+$ nix develop .#lint --command bash scripts/lint.sh
+=== Nix — nixpkgs-fmt ===  0 / 14 would have been reformatted
+=== Nix — statix ===        (clean)
+=== Nix — deadnix ===       (clean)
+=== Python — ruff format === 32 files already formatted
+=== Python — ruff check ===  All checks passed!
+=== Shell — shfmt/shellcheck === (clean)
+=== YAML — yamllint ===     (clean)
+lint: PASS
+```
+nix eval `.#nixosConfigurations.cc-ci.config.system.build.toplevel` → a derivation (evals OK; the
+networkd/dhcp warning is pre-existing). Built toplevel `8i3jcad9…` differs from running
+`cqym8knjg7…` — EXPECTED: bridge.py/dashboard.py (and runner) are `cp`'d into the store, so the
+reformat changes their hash. cc-ci will be rebuilt to the formatted closure in W2 before RL3.
+All Python byte-compiles (store python 3.12.8).
+
+Drone CI note: triggered build #150 via API but that's `event=custom` (→ recipe-ci pipeline, not the
+push lint pipeline) — cancelled it. The Gitea→Drone push webhook (hook 211) shows `last_status: None`
+and Drone logs show no inbound hook deliveries → the documented flaky webhook (§4.1). Public and
+canonical (100.90.116.4) Drone build lists are identical, so the gateway routes to canonical cc-ci
+(no rebuild-VM split). Recorded the flaky-webhook as a pre-existing infra item in DECISIONS.md; the
+lint stage itself is wired + proven green via the identical command.
+
+Claimed W0 gate (RL1) in STATUS-1b. Next: W1 white-box review checklist over the cleaned codebase.