fix(harness): run-keyed run-scoped state files — CONC-A1 (same-domain runs corrupted shared deploy-count)

The four CCCI state files (deploys countfile, opstate, deps, depskip) were keyed
by app domain in shared /tmp. A second run of the same domain executes its main()
preamble + deploy_app's pre-lock _record_deploy BEFORE blocking at the app lock,
so it reset/polluted the live first run's counter (false DG4.1 deploy-count=2,
build 279) and the first run's end-of-run os.remove crashed the second
(FileNotFoundError, build 281). Masked pre-restructure by the end-to-end recipe
flock. Now keyed by run id + harness pid via _run_state_path(); children receive
exact paths via the CCCI_*_FILE env vars, so domain keying was never load-bearing.

tests/concurrency/test_run_state.py: path-invariant cases + a real-process
regression (helpers.py deploy-count-run) reproducing the live interleaving —
verified to FAIL under simulated shared keying. docs/concurrency.md §3 updated.

runner/run_recipe_ci.py

@@ -138,6 +138,17 @@ def _gitea_token() -> str | None:
     return tok or None
 
 
+def _run_state_path(name: str) -> str:
+    """Run-scoped state file in the tempdir, keyed by run id + harness pid — NEVER by app domain.
+    A second run of the SAME domain overlaps this process (its main() preamble executes before it
+    blocks at the app lock inside deploy_app), so domain-keyed files get reset/removed under the
+    live run: M2(c) double-!testme produced a false DG4.1 deploy-count=2 in run 1 and a countfile
+    FileNotFoundError crash in run 2. Children never re-derive these paths — they receive them
+    via the CCCI_*_FILE env vars, so the key only has to be unique per harness process."""
+    rid = results_mod.run_id()
+    return os.path.join(tempfile.gettempdir(), f"ccci-{name}-{rid}-{os.getpid()}")
+
+
 def setup_run_abra_dir() -> str:
     """P3: build + export this run's PER-RUN ABRA_DIR — structural isolation of recipe trees.
 
@@ -619,15 +630,15 @@ def run_quick(
         flush=True,
     )
 
-    statefile = os.path.join(tempfile.gettempdir(), f"ccci-opstate-{domain}.json")
+    statefile = _run_state_path("opstate") + ".json"
     with open(statefile, "w") as f:
         json.dump({}, f)
     os.environ["CCCI_OP_STATE_FILE"] = statefile
-    depsfile = os.path.join(tempfile.gettempdir(), f"ccci-deps-{domain}.json")
+    depsfile = _run_state_path("deps") + ".json"
     with open(depsfile, "w") as f:
         json.dump({}, f)
     os.environ["CCCI_DEPS_FILE"] = depsfile
-    skipfile = os.path.join(tempfile.gettempdir(), f"ccci-depskip-{domain}.txt")
+    skipfile = _run_state_path("depskip") + ".txt"
     with contextlib.suppress(OSError):
         os.remove(skipfile)
     os.environ["CCCI_DEPS_SKIP_REPORT"] = skipfile
@@ -927,7 +938,7 @@ def main() -> int:
     hook = discovery.install_steps(recipe, repo_local)
 
     # Deploy-count guard (DG4.1): exactly one deploy_app() per run.
-    countfile = os.path.join(tempfile.gettempdir(), f"ccci-deploys-{domain}")
+    countfile = _run_state_path("deploys")
     with open(countfile, "w") as f:
         f.write("0")
     os.environ["CCCI_DEPLOY_COUNT_FILE"] = countfile
@@ -943,7 +954,7 @@ def main() -> int:
 
     # Run-scoped op state (HC3): the orchestrator records op results (pre-upgrade identity, backup
     # snapshot_id) here for the assertion tiers (generic + overlay) to read via generic.op_state().
-    statefile = os.path.join(tempfile.gettempdir(), f"ccci-opstate-{domain}.json")
+    statefile = _run_state_path("opstate") + ".json"
     with open(statefile, "w") as f:
         json.dump({}, f)
     os.environ["CCCI_OP_STATE_FILE"] = statefile
@@ -954,12 +965,12 @@ def main() -> int:
     # cannot break the generic-tier signal. The `setup_custom_tests` step deploys each dep + runs
     # `tests/<recipe>/setup_custom_tests.sh` to wire OIDC env via in-place redeploy.
     # `$CCCI_DEPS_FILE` is written with the full creds dict the hook script needs (jq-readable).
-    depsfile = os.path.join(tempfile.gettempdir(), f"ccci-deps-{domain}.json")
+    depsfile = _run_state_path("deps") + ".json"
     with open(depsfile, "w") as f:
         json.dump({}, f)
     os.environ["CCCI_DEPS_FILE"] = depsfile
     # F2-11: conftest appends the count of requires_deps tests it skips (deps-not-ready) here.
-    skipfile = os.path.join(tempfile.gettempdir(), f"ccci-depskip-{domain}.txt")
+    skipfile = _run_state_path("depskip") + ".txt"
     with contextlib.suppress(OSError):
         os.remove(skipfile)
     os.environ["CCCI_DEPS_SKIP_REPORT"] = skipfile