chore(gate): every lane reports how long it took, and a run can log the times for comparison

frontend/src/lib/gates.snapshot.json

@@ -1307,21 +1307,39 @@
       "export MSYS_NO_PATHCONV=1 # Git Bash: do not rewrite the in-container paths below",
       "TESTCOMPOSE=backend/docker-compose.test.yml",
       "failed=()",
+      "timings=()",
+      "ms() { date +%s%3N; }",
+      "secs() { awk -v t=\"$1\" 'BEGIN { printf \"%.1f\", t / 1000 }'; }",
+      "took=\"\"",
+      "timed() { # timed <name> <ok|red> <start-ms> — sets $took (no subshell: it must add to $timings)",
+      "  took=\"$(secs $(($(ms) - $3)))\"",
+      "  timings+=(\"$(printf '%8s s  %s' \"$took\" \"$1\")$([ \"$2\" = red ] && echo '  (red)')\")",
+      "  if [ -n \"${GATE_TIMES_FILE:-}\" ]; then",
+      "    printf '%s\\t%s\\t%s\\t%s\\t%s\\t%s\\n' \"$(date -u +%FT%TZ)\" \"$mode\" \"$1\" \"$took\" \"$2\" \\",
+      "      \"$(git rev-parse --short 'HEAD^{tree}' 2>/dev/null)\" >>\"$GATE_TIMES_FILE\"",
+      "  fi",
+      "  return 0",
+      "}",
       "lane() { # lane <name> <command…> — run it, remember a failure, never stop",
-      "  local name=\"$1\"",
+      "  local name=\"$1\" t0 result=ok",
       "  shift",
+      "  t0=\"$(ms)\"",
       "  if [ \"$brief\" = 0 ]; then",
       "    echo \">> $name…\"",
-      "    \"$@\" || failed+=(\"$name\")",
+      "    \"$@\" || { failed+=(\"$name\"); result=red; }",
+      "    timed \"$name\" \"$result\" \"$t0\"",
+      "    echo \"<< $name: $took s\"",
       "    return 0",
       "  fi",
       "  local out",
       "  out=\"$(mktemp)\"",
       "  if \"$@\" >\"$out\" 2>&1; then",
-      "    echo \">> $name: ok\"",
+      "    timed \"$name\" ok \"$t0\"",
+      "    echo \">> $name: ok ($took s)\"",
       "  else",
       "    failed+=(\"$name\")",
-      "    echo \">> $name: FAILED\"",
+      "    timed \"$name\" red \"$t0\"",
+      "    echo \">> $name: FAILED ($took s)\"",
       "    brief_excerpt \"$out\"",
       "  fi",
       "  rm -f \"$out\"",
@@ -1361,6 +1379,7 @@
       "  return 1",
       "}",
       "frontend() { (cd frontend && \"$@\"); }",
+      "gate_t0=\"$(ms)\"",
       "lane \"ruff\" ruff_check",
       "lane \"ruff format --check\" ruff_format",
       "lane \"basedpyright (new errors only)\" basedpyright",
@@ -1387,6 +1406,9 @@
       "  lane \"pip-audit (backend lock)\" pip_audit",
       "  lane \"npm audit (production dependencies)\" frontend npm audit --omit=dev --audit-level=high",
       "fi",
+      "echo \">> lane times:\"",
+      "printf '%s\\n' \"${timings[@]}\"",
+      "echo \"$(printf '%8s' \"$(secs $(($(ms) - gate_t0)))\") s  total\"",
       "if [ ${#failed[@]} -eq 0 ]; then",
       "  echo \">> gate ($mode): green ✓\"",
       "  exit 0",

scripts/check.sh

@@ -9,6 +9,8 @@
 #   bash scripts/check.sh lint   the static lanes only: no tests, no build, no audits
 #   … --brief                    (either mode) a lane's output only when it fails, and only its first
 #                                error lines — for an agent, whose context the full log would flood
+#   GATE_TIMES_FILE=<file> …     also append each lane's time as a TSV row (UTC, mode, lane, seconds,
+#                                ok|red, HEAD's tree) — to compare runs; every run prints the times anyway
 #
 # Each lane runs even when an earlier one failed, and the summary names every red one: a gate that
 # stops at the first failure hides the second until the first is fixed. The backend lanes run in the
@@ -29,21 +31,42 @@ done
 export MSYS_NO_PATHCONV=1 # Git Bash: do not rewrite the in-container paths below
 TESTCOMPOSE=backend/docker-compose.test.yml
 failed=()
+timings=()
+ms() { date +%s%3N; }
+secs() { awk -v t="$1" 'BEGIN { printf "%.1f", t / 1000 }'; }
+# How long each lane took: a line after the lane, a table at the end, and — when GATE_TIMES_FILE names a
+# file — one tab-separated row per lane appended to it (UTC time, mode, lane, seconds, ok|red, tree), so
+# runs can be compared. The script writes no file unless asked to.
+took=""
+timed() { # timed <name> <ok|red> <start-ms> — sets $took (no subshell: it must add to $timings)
+  took="$(secs $(($(ms) - $3)))"
+  timings+=("$(printf '%8s s  %s' "$took" "$1")$([ "$2" = red ] && echo '  (red)')")
+  if [ -n "${GATE_TIMES_FILE:-}" ]; then
+    printf '%s\t%s\t%s\t%s\t%s\t%s\n' "$(date -u +%FT%TZ)" "$mode" "$1" "$took" "$2" \
+      "$(git rev-parse --short 'HEAD^{tree}' 2>/dev/null)" >>"$GATE_TIMES_FILE"
+  fi
+  return 0
+}
 lane() { # lane <name> <command…> — run it, remember a failure, never stop
-  local name="$1"
+  local name="$1" t0 result=ok
   shift
+  t0="$(ms)"
   if [ "$brief" = 0 ]; then
     echo ">> $name…"
-    "$@" || failed+=("$name")
+    "$@" || { failed+=("$name"); result=red; }
+    timed "$name" "$result" "$t0"
+    echo "<< $name: $took s"
     return 0
   fi
   local out
   out="$(mktemp)"
   if "$@" >"$out" 2>&1; then
-    echo ">> $name: ok"
+    timed "$name" ok "$t0"
+    echo ">> $name: ok ($took s)"
   else
     failed+=("$name")
-    echo ">> $name: FAILED"
+    timed "$name" red "$t0"
+    echo ">> $name: FAILED ($took s)"
     brief_excerpt "$out"
   fi
   rm -f "$out"
@@ -102,6 +125,7 @@ basedpyright() {
 
 frontend() { (cd frontend && "$@"); }
 
+gate_t0="$(ms)"
 lane "ruff" ruff_check
 lane "ruff format --check" ruff_format
 lane "basedpyright (new errors only)" basedpyright
@@ -139,6 +163,9 @@ if [ "$mode" = all ]; then
   lane "npm audit (production dependencies)" frontend npm audit --omit=dev --audit-level=high
 fi
 
+echo ">> lane times:"
+printf '%s\n' "${timings[@]}"
+echo "$(printf '%8s' "$(secs $(($(ms) - gate_t0)))") s  total"
 if [ ${#failed[@]} -eq 0 ]; then
   echo ">> gate ($mode): green ✓"
   exit 0