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diff --git a/.ai/scripts/tests/route-batch.bats b/.ai/scripts/tests/route-batch.bats
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+#!/usr/bin/env bats
+#
+# Tests for claude-templates/.ai/scripts/route-batch — the wrap-up router's
+# mechanical go path (wrapup-routing spec, Phase 4 / D7 / D9).
+#
+# Contract under test:
+#   route-batch --list           one "<destination>\t<heading>" line per task
+#                                carrying :ROUTE_CANDIDATE:; silent when none;
+#                                never modifies anything
+#   route-batch --go             per candidate: write the subtree (minus the
+#                                :ROUTE_CANDIDATE: line) as a one-task handoff,
+#                                deliver via inbox-send to the destination's
+#                                inbox/, then remove the subtree from the local
+#                                todo.org. Send failure leaves the task in
+#                                place and exits non-zero. Empty set: no-op.
+#
+# Strategy: fixture roots under $TEST_DIR hold a source project and two
+# destination projects; INBOX_SEND_ROOTS sandboxes inbox-send's discovery to
+# them (the same hook inbox-send's own tests use).
+
+SCRIPT="$(cd "$(dirname "$BATS_TEST_FILENAME")/.." && pwd)/route-batch"
+
+setup() {
+  TEST_DIR="$(mktemp -d -t route-batch-bats.XXXXXX)"
+  ROOTS="$TEST_DIR/roots"
+  SRC="$ROOTS/srcproj"
+  mkdir -p "$SRC/.ai" "$SRC/inbox" \
+           "$ROOTS/alpha/.ai" "$ROOTS/alpha/inbox" \
+           "$ROOTS/beta/.ai" "$ROOTS/beta/inbox"
+  touch "$ROOTS/alpha/todo.org"   # alpha has a todo.org; beta deliberately not
+
+  cat > "$SRC/todo.org" <<'EOF'
+* Srcproj Open Work
+** TODO [#B] Alpha-bound task :feature:
+:PROPERTIES:
+:ROUTE_CANDIDATE: alpha
+:END:
+Body line about the alpha work.
+*** TODO Sub-task that rides along
+** TODO [#C] Purely local task
+Local body stays put.
+** TODO [#C] Beta-bound task :quick:
+:PROPERTIES:
+:CREATED: [2026-07-01 Tue]
+:ROUTE_CANDIDATE: beta
+:END:
+Beta body.
+EOF
+
+  export INBOX_SEND_ROOTS="$ROOTS"
+  cd "$SRC"
+}
+
+teardown() {
+  rm -rf "$TEST_DIR"
+}
+
+# ---- --list ------------------------------------------------------------
+
+@test "route-batch --list: one destination+heading line per candidate, backlog excluded" {
+  run "$SCRIPT" --list
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"alpha"*"Alpha-bound task"* ]]
+  [[ "$output" == *"beta"*"Beta-bound task"* ]]
+  [[ "$output" != *"Purely local task"* ]]
+}
+
+@test "route-batch --list: empty candidate set is silent (exit 0)" {
+  sed -i '/:ROUTE_CANDIDATE:/d' todo.org
+  run "$SCRIPT" --list
+  [ "$status" -eq 0 ]
+  [ -z "$output" ]
+}
+
+@test "route-batch --list: modifies nothing (skip leaves all in place)" {
+  before="$(cat todo.org)"
+  run "$SCRIPT" --list
+  [ "$status" -eq 0 ]
+  [ "$(cat todo.org)" = "$before" ]
+  [ -z "$(ls "$ROOTS/alpha/inbox" "$ROOTS/beta/inbox" 2>/dev/null | grep -v ':')" ]
+}
+
+# ---- --go --------------------------------------------------------------
+
+@test "route-batch --go: delivers each candidate to its destination inbox with provenance" {
+  run "$SCRIPT" --go
+  [ "$status" -eq 0 ]
+  alpha_file=$(find "$ROOTS/alpha/inbox" -name '*from-srcproj*' -type f)
+  beta_file=$(find "$ROOTS/beta/inbox" -name '*from-srcproj*' -type f)
+  [ -n "$alpha_file" ]
+  [ -n "$beta_file" ]
+  grep -q 'Alpha-bound task' "$alpha_file"
+  grep -q 'Sub-task that rides along' "$alpha_file"   # children ride along
+  grep -q 'Beta-bound task' "$beta_file"
+  ! grep -q ':ROUTE_CANDIDATE:' "$alpha_file"
+  ! grep -q ':ROUTE_CANDIDATE:' "$beta_file"
+}
+
+@test "route-batch --go: removes routed subtrees from todo.org, leaves local tasks" {
+  run "$SCRIPT" --go
+  [ "$status" -eq 0 ]
+  ! grep -q 'Alpha-bound task' todo.org
+  ! grep -q 'Sub-task that rides along' todo.org
+  ! grep -q 'Beta-bound task' todo.org
+  grep -q 'Purely local task' todo.org
+  grep -q 'Local body stays put' todo.org
+}
+
+@test "route-batch --go: a kept property drawer survives minus the marker" {
+  run "$SCRIPT" --go
+  [ "$status" -eq 0 ]
+  beta_file=$(find "$ROOTS/beta/inbox" -name '*from-srcproj*' -type f)
+  grep -q ':CREATED: \[2026-07-01 Tue\]' "$beta_file"
+}
+
+@test "route-batch --go: destination with inbox/ but no todo.org still delivers" {
+  run "$SCRIPT" --go
+  [ "$status" -eq 0 ]
+  [ ! -f "$ROOTS/beta/todo.org" ]
+  [ -n "$(find "$ROOTS/beta/inbox" -name '*from-srcproj*' -type f)" ]
+}
+
+@test "route-batch --go: empty candidate set is a silent no-op (exit 0)" {
+  sed -i '/:ROUTE_CANDIDATE:/d' todo.org
+  before="$(cat todo.org)"
+  run "$SCRIPT" --go
+  [ "$status" -eq 0 ]
+  [ -z "$output" ]
+  [ "$(cat todo.org)" = "$before" ]
+}
+
+@test "route-batch --go: a failed send leaves that task in place, marker intact, and exits non-zero" {
+  sed -i 's/:ROUTE_CANDIDATE: beta/:ROUTE_CANDIDATE: ghost/' todo.org
+  run "$SCRIPT" --go
+  [ "$status" -ne 0 ]
+  grep -q 'Beta-bound task' todo.org            # failed route stays local
+  grep -q ':ROUTE_CANDIDATE: ghost' todo.org    # marker survives so it resurfaces next wrap
+  ! grep -q 'Alpha-bound task' todo.org         # the good route still landed
+  [ -n "$(find "$ROOTS/alpha/inbox" -name '*from-srcproj*' -type f)" ]
+}
+
+@test "route-batch --go: handoff headings are promoted to top level" {
+  run "$SCRIPT" --go
+  [ "$status" -eq 0 ]
+  alpha_file=$(find "$ROOTS/alpha/inbox" -name '*from-srcproj*' -type f)
+  grep -q '^\* TODO \[#B\] Alpha-bound task' "$alpha_file"
+  grep -q '^\*\* TODO Sub-task that rides along' "$alpha_file"
+}
+
+@test "route-batch --go: a drawer emptied by the marker strip is pruned from the handoff" {
+  run "$SCRIPT" --go
+  [ "$status" -eq 0 ]
+  alpha_file=$(find "$ROOTS/alpha/inbox" -name '*from-srcproj*' -type f)
+  ! grep -q ':PROPERTIES:' "$alpha_file"
+}
+
+# ---- Overlapping candidates (nested marker data-loss regression) --------
+
+@test "route-batch --go: nested candidates conflict — both stay, bystander survives, exit non-zero" {
+  cat > todo.org <<'EOF'
+* Srcproj Open Work
+** TODO [#B] Parent bound for alpha
+:PROPERTIES:
+:ROUTE_CANDIDATE: alpha
+:END:
+Parent body.
+*** TODO Child bound for beta
+:PROPERTIES:
+:ROUTE_CANDIDATE: beta
+:END:
+Child body.
+** TODO [#C] Innocent bystander task
+Bystander body.
+EOF
+  run "$SCRIPT" --go
+  [ "$status" -ne 0 ]
+  [[ "$output" == *"CONFLICT"* ]]
+  grep -q 'Parent bound for alpha' todo.org
+  grep -q 'Child bound for beta' todo.org
+  grep -q 'Innocent bystander task' todo.org
+  grep -q 'Bystander body' todo.org
+  [ -z "$(find "$ROOTS/alpha/inbox" "$ROOTS/beta/inbox" -name '*from-srcproj*' -type f)" ]
+}
+
+@test "route-batch: duplicate identical markers in one drawer dedupe to a single route" {
+  cat > todo.org <<'EOF'
+* Srcproj Open Work
+** TODO [#B] Double-tagged for alpha
+:PROPERTIES:
+:ROUTE_CANDIDATE: alpha
+:ROUTE_CANDIDATE: alpha
+:END:
+Body.
+EOF
+  run "$SCRIPT" --list
+  [ "$status" -eq 0 ]
+  [ "$(echo "$output" | grep -c 'Double-tagged')" -eq 1 ]
+  [[ "$output" != *"CONFLICT"* ]]
+  run "$SCRIPT" --go
+  [ "$status" -eq 0 ]
+  [ "$(find "$ROOTS/alpha/inbox" -name '*from-srcproj*' -type f | wc -l)" -eq 1 ]
+}