pr-reviews re-polls after a slow tick; the harness lock fails loudly

improvise-qnpi: `pr-reviews --wait` checked its deadline before the first
re-poll, so a second boundary between two reads of the clock skipped the
only poll (exit 1 with polls=1, reproduced under CPU load). The deadline
is now checked after each poll. A new case drives it with a PATH shim
whose `date` ticks one second per read, so it fails deterministically on
the old loop rather than under load.

improvise-mkbp: harness/opfs-contract/Cargo.lock pinned pest 2.9.1 while
its path deps require 2.9.2, so every build rewrote it. The resolved lock
is committed and build.sh starts with `cargo metadata --locked`; the
wasm-pack `-- --locked` route was tried and does not work (wasm-pack
re-resolves first). opfs.spec.js now names the fix when harness/serve/opfs
is missing, which is what running web/assemble.sh alone leaves.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VdfEGXA7aJ6ftMsCc9PJze

harness/opfs-contract/Cargo.lock

@@ -308,9 +308,9 @@ dependencies = [
 
 [[package]]
 name = "pest"
-version = "2.9.1"
+version = "2.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6d45aeb61b4bf818e12d4205f2466f8c4748f85f4fce0146d1c03d69d753f0ad"
+checksum = "45d3aca230fad2e6f6317ca0a72724338c4960cb97168a85cdee66df4a9a21a8"
 dependencies = [
  "memchr",
  "ucd-trie",
@@ -318,9 +318,9 @@ dependencies = [
 
 [[package]]
 name = "pest_derive"
-version = "2.9.1"
+version = "2.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89cc5a242e25ed4e7704d0be240f2cfbe20a8c27e7e252d94835be93d92dc39f"
+checksum = "284b60557f2c4a2e72ad3f2d34d42685a2fa4a6a61d0d2a10c0ae2a5e916c2cf"
 dependencies = [
  "pest",
  "pest_generator",
@@ -328,9 +328,9 @@ dependencies = [
 
 [[package]]
 name = "pest_generator"
-version = "2.9.1"
+version = "2.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7abf21475cc3820fe4b2ca2dc2142902f67a02189f3b5b3a229f4febc01a43e5"
+checksum = "1d9d1f08a115309ee99268cf85e5228e0e56aa9caf8841ec12866b6be07c3109"
 dependencies = [
  "pest",
  "pest_meta",
@@ -341,9 +341,9 @@ dependencies = [
 
 [[package]]
 name = "pest_meta"
-version = "2.9.1"
+version = "2.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "adba4db388f687393c18c51348d44a41d870ca9df71a2c98172ea3035dc6936e"
+checksum = "ed93ba1a9ffcca32130a5188701c81c0c49cf00d4b7c5007d5148951d743adcb"
 dependencies = [
  "pest",
 ]