chore(vendor): re-sync the Interchange set and @intX deps to 0.5.0

Every published @intx/* dependency moves 0.3.0 -> 0.5.0 (root dependencies
and devDependencies, plus the published-package entries inside the vendored
manifests) and all eleven vendored Interchange paths re-sync to upstream
aa7b78ee, the peel of tag v0.5.0, recorded as a SHA because the released npm
metadata ships an empty gitHead. All forty-one entries across the five
PATCHES.md ledgers re-adjudicate to KEEP (32 inference, 4 types, 3 agent,
1 storage-isogit, 1 tools-posix); store.ts is the one patched file upstream
drift touched and goes through a three-way merge.

The adopted storage-isogit durability rewrite adds reads-before-write to
every session-record checkpoint: +1,000 .git readFile, +400 worktree readFile
and +200 worktree stat per 200 turns, against -200 .git/index writes. Those
are counted operations, not timings, so the CI session-store perf baseline
moves with the branch and is re-recorded here from the head arm; the four
failing counters, the cause and the accepted trade are disclosed in
docs/VENDORING.md rather than rounded away.

bin/vendor-patch-diff now prints the shape of each divergence (files, +, -)
so the per-ledger numbers quoted in PATCHES.md come from repo tooling; the
five re-sync sections quote its current output.

Author: TheGreatAxios

bin/vendor-patch-diff

@@ -207,14 +207,35 @@ for i in "${!WORK_NAMES[@]}"; do
 
   # Unified diff of source only. diff exits 1 on differences — that is success
   # for this tool (we expect patches). Exit 2 is a real error.
+  #
+  # The diff is captured so the run also prints its own shape (files touched,
+  # added and removed lines). Each PATCHES.md re-sync section quotes exactly
+  # these three numbers as the proof that a sync carried every patch across, so
+  # they must come from this tool rather than from a hand-tallied scratch diff.
+  diff_out="$TMP/diff-$i.txt"
   set +e
-  diff -ruN "$pristine_src" "$vendor_src"
+  diff -ruN "$pristine_src" "$vendor_src" > "$diff_out"
   code=$?
   set -e
+  cat "$diff_out"
   if [[ $code -eq 0 ]]; then
     echo "(no source differences)"
   elif [[ $code -eq 1 ]]; then
     OVERALL=1
+    counts="$(
+      awk '
+        /^[+][+][+] / { next }
+        /^--- / { next }
+        /^[+]/ { plus++; next }
+        /^-/ { minus++; next }
+        /^diff / { files++ }
+        /^Only in / { files++ }
+        END { printf "%d %d %d", files + 0, plus + 0, minus + 0 }
+      ' "$diff_out"
+    )"
+    read -r changed plus minus <<<"$counts"
+    echo
+    echo "# local divergence: $changed files, $plus +, $minus -"
   else
     echo "error: diff failed for $name (exit $code)" >&2
     exit 1