chore(budgets): gate the Linux-only bwrap probe by cfg; record restore's stat

Pre-push budgets on the batch 7+8 head:
- dead code 261 > 260: the bwrap probe and its verdict carried
  cfg_attr(not(linux), allow(dead_code)). The probe and its deadline are now
  cfg(linux, not ohos) like their only caller; the pure verdict is
  cfg(any(test, linux)) for its platform-neutral tests. Back to 259.
- blocking calls: snapshot/repo.rs 19 > 18. The Windows transition check
  (ancestor_is_not_a_directory) stats ancestors inside restore, which is
  synchronous code already run under the repository write lock beside the
  file's 18 existing std::fs sites; the budget records it. --update also
  tightened files that are now clean (lib.rs, compaction/last_round.rs and
  the retired crates/mcp stdio client and test support).

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Signed-off-by: CodeWhale Bot <[email protected]>

crates/tui/src/extension_host/supervisor.rs

@@ -604,15 +604,13 @@ fn no_wrapper_reason() -> String {
 
 /// How long the bwrap probe may take. A working bwrap runs
 /// `<runtime> --version` in well under a second, even on a loaded CI runner.
+#[cfg(all(target_os = "linux", not(target_env = "ohos")))]
 const BWRAP_PROBE_DEADLINE: Duration = Duration::from_secs(10);
 
 /// Run the finished bwrap wrapper around `<runtime> --version` (`command`),
 /// with no environment, to learn whether bwrap works on this host: it may be
 /// installed yet unable to create its namespaces. Blocking.
-#[cfg_attr(
-    not(all(target_os = "linux", not(target_env = "ohos"))),
-    allow(dead_code)
-)]
+#[cfg(all(target_os = "linux", not(target_env = "ohos")))]
 fn probe_bwrap(command: &[String], cwd: &Path) -> Result<(), String> {
     use std::io::Read as _;
     use wait_timeout::ChildExt as _;
@@ -652,10 +650,7 @@ fn probe_bwrap(command: &[String], cwd: &Path) -> Result<(), String> {
 /// it ran, otherwise the reason `/plugin` and doctor show — bwrap's first
 /// line of stderr (or the exit status), and a hint when that line is about
 /// the user namespace bwrap could not create. Pure.
-#[cfg_attr(
-    not(all(target_os = "linux", not(target_env = "ohos"))),
-    allow(dead_code)
-)]
+#[cfg(any(test, all(target_os = "linux", not(target_env = "ohos"))))]
 fn bwrap_probe_verdict(succeeded: bool, status: &str, stderr: &str) -> Result<(), String> {
     if succeeded {
         return Ok(());

scripts/check-blocking-calls-budget.json

@@ -62,12 +62,6 @@
   "crates/localization/build.rs": {
     "std_fs": 3
   },
-  "crates/mcp/src/stdio_client.rs": {
-    "thread_sleep": 2
-  },
-  "crates/mcp/src/test_support.rs": {
-    "std_fs": 3
-  },
   "crates/memory/src/main.rs": {
     "std_fs": 1
   },
@@ -151,9 +145,6 @@
   "crates/tui/src/commands/user_registry.rs": {
     "std_fs": 2
   },
-  "crates/tui/src/compaction/last_round.rs": {
-    "std_fs": 1
-  },
   "crates/tui/src/composer_history.rs": {
     "thread_sleep": 1
   },
@@ -253,10 +244,6 @@
   "crates/tui/src/integrations/dsh/receipt.rs": {
     "std_fs": 5
   },
-  "crates/tui/src/lib.rs": {
-    "path_canonicalize": 2,
-    "std_fs": 42
-  },
   "crates/tui/src/mcp.rs": {
     "std_fs": 1
   },
@@ -403,7 +390,7 @@
   },
   "crates/tui/src/snapshot/repo.rs": {
     "path_canonicalize": 4,
-    "std_fs": 18,
+    "std_fs": 19,
     "thread_sleep": 1
   },
   "crates/tui/src/tools/git.rs": {
@@ -587,7 +574,7 @@
     "path_canonicalize": 2
   },
   "crates/tui/src/voice.rs": {
-    "std_fs": 6
+    "std_fs": 3
   },
   "crates/tui/src/working_set.rs": {
     "path_canonicalize": 1,