style(1b): auto-format + lint-clean the whole codebase (RL1)

Mechanical, semantics-preserving cleanup so the codebase passes the new lint stage:
- ruff format: all 32 Python files (wraps long signatures, normalizes quotes/blank lines).
- nixpkgs-fmt: modules/drone-runner.nix.
- shfmt (-i 2 -ci): scripts/*.sh.

Lint fixes (reviewed, behavior-preserving — no test weakened):
- ruff SIM105: try/except-pass -> contextlib.suppress (abra.py app_config rm; lifecycle.py janitor).
- ruff SIM115: open().read() -> with open() (run_recipe_ci.py redaction-values + gitea-token).
- statix: merge repeated sops `secrets.*` keys into one `secrets = { ... }` (comments kept);
  empty fn pattern `{ ... }:` -> `_:` (packages.nix).
- deadnix: drop unused lambda args (flake `self`; configuration.nix `lib`; overlay `final` -> `_`).

Verified on cc-ci: `scripts/lint.sh` -> lint: PASS; nixosConfigurations.cc-ci evaluates;
all Python byte-compiles. The deployed bridge/dashboard/runner source changes hash (reformat),
so cc-ci will be rebuilt to the new closure in W2 before the cold D1-D10 re-verification.

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

tests/matrix-synapse/test_backup.py

@@ -4,6 +4,7 @@ reloads the dump), assert the restored DB matches the pre-mutation state.
 
 This exercises the real DB-dump backup hook (backupbot.backup.pre-hook / restore.post-hook), not a
 plain volume copy — the meaningful data path for a postgres-backed app."""
+
 import os
 import sys
 
@@ -20,18 +21,30 @@ def test_backup_mutate_restore(deployed, meta):
     domain = deployed
 
     # 1) establish original state in postgres, then back up (pg_backup.sh dumps the DB)
-    _psql(domain, "CREATE TABLE IF NOT EXISTS ci_marker(v text); DELETE FROM ci_marker; "
-                  "INSERT INTO ci_marker VALUES('original');")
+    _psql(
+        domain,
+        "CREATE TABLE IF NOT EXISTS ci_marker(v text); DELETE FROM ci_marker; "
+        "INSERT INTO ci_marker VALUES('original');",
+    )
     assert _psql(domain, "SELECT v FROM ci_marker;") == "original"
     lifecycle.backup_app(domain)
 
     # 2) mutate: drop the marker table (diverge from the backup)
     _psql(domain, "DROP TABLE ci_marker;")
-    assert _psql(domain, "SELECT to_regclass('public.ci_marker');") in ("", "NULL"), "drop did not take"
+    assert _psql(domain, "SELECT to_regclass('public.ci_marker');") in (
+        "",
+        "NULL",
+    ), "drop did not take"
 
     # 3) restore -> the dumped DB (with the marker) is reloaded
     lifecycle.restore_app(domain)
-    lifecycle.wait_healthy(domain, ok_codes=tuple(meta["HEALTH_OK"]), path=meta["HEALTH_PATH"],
-                           deploy_timeout=meta["DEPLOY_TIMEOUT"], http_timeout=meta["HTTP_TIMEOUT"])
-    assert _psql(domain, "SELECT v FROM ci_marker;") == "original", \
-        "restore did not return the pre-mutation postgres state"
+    lifecycle.wait_healthy(
+        domain,
+        ok_codes=tuple(meta["HEALTH_OK"]),
+        path=meta["HEALTH_PATH"],
+        deploy_timeout=meta["DEPLOY_TIMEOUT"],
+        http_timeout=meta["HTTP_TIMEOUT"],
+    )
+    assert (
+        _psql(domain, "SELECT v FROM ci_marker;") == "original"
+    ), "restore did not return the pre-mutation postgres state"