feat(bot): клиент SourceCraft API — прогоны, логи кубов, sha коммита, ретраи

- SourceCraftClient (httpx): list_runs, get_run, get_cube_logs (постранично), run_commit_sha;
  ретраи на сетевые ошибки и 5xx с экспоненциальной задержкой, 4xx — SourceCraftError без повторов
- модели: RunStatus/EventType из swagger, «1970-01-01» = не задано, failed_cubes без служебных #-кубов
- у прогона в API нет sha → куб check/meta в tgit-uploads печатает TGIT_COMMIT_SHA (ADR-014)
- CLI: python -m app.sourcecraft.cli runs
- тесты на реальных ответах API (фикстуры), порог покрытия 45 → 80

Refs #10

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/sourcecraft/cli.py

@@ -0,0 +1,28 @@
+"""Debug CLI: `python -m app.sourcecraft.cli runs [repo]` — recent CI runs with their commit and failed cubes."""
+
+import asyncio
+import sys
+
+from app.config import SourceCraftSettings
+from app.sourcecraft.client import SourceCraftClient
+
+
+async def runs(repo: str | None) -> None:
+    settings = SourceCraftSettings()
+    repo = repo or settings.uploads_repo
+    async with SourceCraftClient(settings) as client:
+        for run in await client.list_runs(repo, page_size=10):
+            full = await client.get_run(repo, run.slug)
+            sha = await client.run_commit_sha(repo, full)
+            failed = ", ".join(f"{t}/{c.slug}" for _, t, c in full.failed_cubes()) or "-"
+            print(f"{run.slug}  {run.event_type:<8} {run.status:<10} sha={sha or '?':<40.12}  failed={failed}")
+
+
+def main() -> None:
+    if len(sys.argv) < 2 or sys.argv[1] != "runs":
+        sys.exit("usage: python -m app.sourcecraft.cli runs [org/repo]")
+    asyncio.run(runs(sys.argv[2] if len(sys.argv) > 2 else None))
+
+
+if __name__ == "__main__":
+    main()