diff --git a/.github/workflows/auto-release.yml b/.github/workflows/auto-release.yml
index 385ffb4..a0410d7 100644
--- a/.github/workflows/auto-release.yml
+++ b/.github/workflows/auto-release.yml
@@ -73,7 +73,7 @@ jobs:
             fi
 
             # Extract commit message (after SHA)
-            MESSAGE=$(echo "$commit" | sed 's/^[a-f0-9]* //')
+            MESSAGE="${commit#* }"
 
             # Check for breaking changes
             if echo "$MESSAGE" | grep -qiE '!:' || echo "$MESSAGE" | grep -qiE 'BREAKING CHANGE'; then
@@ -113,10 +113,12 @@ jobs:
             BUMP="none"
           fi
 
-          echo "bump=$BUMP" >> "$GITHUB_OUTPUT"
-          echo "breaking=$BREAKING" >> "$GITHUB_OUTPUT"
-          echo "features=$FEATURES" >> "$GITHUB_OUTPUT"
-          echo "fixes=$FIXES" >> "$GITHUB_OUTPUT"
+          {
+            echo "bump=$BUMP"
+            echo "breaking=$BREAKING"
+            echo "features=$FEATURES"
+            echo "fixes=$FIXES"
+          } >> "$GITHUB_OUTPUT"
 
       - name: Calculate new version
         if: steps.analyze.outputs.bump != 'none'
@@ -168,7 +170,7 @@ jobs:
           echo "Creating tag: $NEW_TAG"
           # Use GitHub API to create tag (triggers workflows)
           SHA=$(git rev-parse HEAD)
-          gh api repos/${GITHUB_REPOSITORY}/git/refs -X POST -f ref="refs/tags/$NEW_TAG" -f sha="$SHA"
+          gh api "repos/${GITHUB_REPOSITORY}/git/refs" -X POST -f ref="refs/tags/$NEW_TAG" -f sha="$SHA"
           echo "Tag $NEW_TAG created successfully via GitHub API"
 
       - name: Summary
@@ -180,20 +182,24 @@ jobs:
           FEATURES: ${{ steps.analyze.outputs.features }}
           FIXES: ${{ steps.analyze.outputs.fixes }}
         run: |
-          echo "## Auto Release Summary" >> $GITHUB_STEP_SUMMARY
-          echo "" >> $GITHUB_STEP_SUMMARY
-          echo "- **New Tag:** $NEW_TAG" >> $GITHUB_STEP_SUMMARY
-          echo "- **Bump Type:** $BUMP" >> $GITHUB_STEP_SUMMARY
-          echo "- **Breaking Changes:** $BREAKING" >> $GITHUB_STEP_SUMMARY
-          echo "- **Features:** $FEATURES" >> $GITHUB_STEP_SUMMARY
-          echo "- **Fixes:** $FIXES" >> $GITHUB_STEP_SUMMARY
-          echo "" >> $GITHUB_STEP_SUMMARY
-          echo "Release workflow will be triggered automatically." >> $GITHUB_STEP_SUMMARY
+          {
+            echo "## Auto Release Summary"
+            echo ""
+            echo "- **New Tag:** $NEW_TAG"
+            echo "- **Bump Type:** $BUMP"
+            echo "- **Breaking Changes:** $BREAKING"
+            echo "- **Features:** $FEATURES"
+            echo "- **Fixes:** $FIXES"
+            echo ""
+            echo "Release workflow will be triggered automatically."
+          } >> "$GITHUB_STEP_SUMMARY"
 
       - name: No release needed
         if: steps.analyze.outputs.bump == 'none'
         run: |
-          echo "## No Release Needed" >> $GITHUB_STEP_SUMMARY
-          echo "" >> $GITHUB_STEP_SUMMARY
-          echo "No conventional commits (feat:, fix:, BREAKING CHANGE) found since last tag." >> $GITHUB_STEP_SUMMARY
-          echo "Skipping release." >> $GITHUB_STEP_SUMMARY
+          {
+            echo "## No Release Needed"
+            echo ""
+            echo "No conventional commits (feat:, fix:, BREAKING CHANGE) found since last tag."
+            echo "Skipping release."
+          } >> "$GITHUB_STEP_SUMMARY"
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index d605c6d..9c63780 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -27,7 +27,7 @@ concurrency:
 
 jobs:
   docs:
-    uses: YiAgent/OpenCI/.github/workflows/reusable-docs.yml@b96e013bfaad2e6898dd6a25d127411a21da5c00
+    uses: YiAgent/OpenCI/.github/workflows/reusable-docs.yml@4e1ecadc2505761f104f3fd8d255eee4eb369d90
     with:
       build-cmd:    ${{ vars.DOCS_BUILD_CMD || '' }}
       docs-path:    ${{ vars.DOCS_DIR || 'docs' }}
diff --git a/actions/issue/extract-plan/extract-plan.sh b/actions/issue/extract-plan/extract-plan.sh
index b6c68e1..ad34e23 100644
--- a/actions/issue/extract-plan/extract-plan.sh
+++ b/actions/issue/extract-plan/extract-plan.sh
@@ -52,9 +52,27 @@ extract_plan_from_file() {
     done < "$file" \
     | PLAN_VERSION="$PLAN_VERSION" perl -0777 -ne '
         my $v = quotemeta $ENV{PLAN_VERSION};
-        while (m{ \{ (?: [^{}] | (?R) )* "version" \s* : \s* "$v" (?: [^{}] | (?R) )* \} }gsx) {
-          print "$&\n"
+        my $t = $_; my @found; my $pos = 0;
+        while ($pos < length $t) {
+          if (substr($t,$pos,1) eq "{") {
+            my ($d,$i,$s,$e) = (1,$pos+1,0,0);
+            while ($i < length($t) && $d > 0) {
+              my $c = substr($t,$i,1);
+              if ($e) { $e=0 }
+              elsif ($s) { if ($c eq "\\") { $e=1 } elsif ($c eq "\"") { $s=0 } }
+              elsif ($c eq "\"") { $s=1 }
+              elsif ($c eq "{")  { $d++ }
+              elsif ($c eq "}")  { $d-- }
+              $i++;
+            }
+            if ($d == 0) {
+              my $cand = substr($t,$pos,$i-$pos);
+              push @found, $cand if $cand =~ /"version"\s*:\s*"$v"/;
+            }
+          }
+          $pos++;
         }
+        print "$found[-1]\n" if @found;
       ' \
     | tail -n1
   )"
@@ -76,9 +94,27 @@ extract_plan_from_file() {
     found="$(printf '%s' "$concatenated" \
               | PLAN_VERSION="$PLAN_VERSION" perl -0777 -ne '
                   my $v = quotemeta $ENV{PLAN_VERSION};
-                  while (m{ \{ (?: [^{}] | (?R) )* "version" \s* : \s* "$v" (?: [^{}] | (?R) )* \} }gsx) {
-                    print "$&\n"
+                  my $t = $_; my @found; my $pos = 0;
+                  while ($pos < length $t) {
+                    if (substr($t,$pos,1) eq "{") {
+                      my ($d,$i,$s,$e) = (1,$pos+1,0,0);
+                      while ($i < length($t) && $d > 0) {
+                        my $c = substr($t,$i,1);
+                        if ($e) { $e=0 }
+                        elsif ($s) { if ($c eq "\\") { $e=1 } elsif ($c eq "\"") { $s=0 } }
+                        elsif ($c eq "\"") { $s=1 }
+                        elsif ($c eq "{")  { $d++ }
+                        elsif ($c eq "}")  { $d-- }
+                        $i++;
+                      }
+                      if ($d == 0) {
+                        my $cand = substr($t,$pos,$i-$pos);
+                        push @found, $cand if $cand =~ /"version"\s*:\s*"$v"/;
+                      }
+                    }
+                    $pos++;
                   }
+                  print "$found[-1]\n" if @found;
                 ' \
               | tail -n1)"
     if [ -n "$found" ] && jq -e . <<<"$found" >/dev/null 2>&1; then
@@ -106,9 +142,27 @@ extract_plan_from_file() {
   if [ -n "${concatenated:-}" ]; then
     found="$(printf '%s' "$concatenated" \
               | perl -0777 -ne '
-                  while (m{ \{ (?: [^{}] | (?R) )* "actions" \s* : \s* \[ (?: [^\[\]] | (?R) )* \] (?: [^{}] | (?R) )* \} }gsx) {
-                    print "$&\n"
+                  my $t = $_; my @found; my $pos = 0;
+                  while ($pos < length $t) {
+                    if (substr($t,$pos,1) eq "{") {
+                      my ($d,$i,$s,$e) = (1,$pos+1,0,0);
+                      while ($i < length($t) && $d > 0) {
+                        my $c = substr($t,$i,1);
+                        if ($e) { $e=0 }
+                        elsif ($s) { if ($c eq "\\") { $e=1 } elsif ($c eq "\"") { $s=0 } }
+                        elsif ($c eq "\"") { $s=1 }
+                        elsif ($c eq "{")  { $d++ }
+                        elsif ($c eq "}")  { $d-- }
+                        $i++;
+                      }
+                      if ($d == 0) {
+                        my $cand = substr($t,$pos,$i-$pos);
+                        push @found, $cand if $cand =~ /"actions"\s*:\s*\[/;
+                      }
+                    }
+                    $pos++;
                   }
+                  print "$found[-1]\n" if @found;
                 ' \
               | while IFS= read -r candidate; do
                   if printf '%s' "$candidate" | jq -e '.version == "'"$PLAN_VERSION"'" and (.actions | type) == "array"' >/dev/null 2>&1; then
diff --git a/actions/pr/extract-plan/extract-plan.sh b/actions/pr/extract-plan/extract-plan.sh
index 4d67fbe..f36cf9f 100644
--- a/actions/pr/extract-plan/extract-plan.sh
+++ b/actions/pr/extract-plan/extract-plan.sh
@@ -36,9 +36,27 @@ extract_plan_from_file() {
     found="$(printf '%s' "$concatenated" \
               | PLAN_VERSION="$PLAN_VERSION" perl -0777 -ne '
                   my $v = quotemeta $ENV{PLAN_VERSION};
-                  while (m{ \{ (?: [^{}] | (?R) )* "version" \s* : \s* "$v" (?: [^{}] | (?R) )* \} }gsx) {
-                    print "$&\n"
+                  my $t = $_; my @found; my $pos = 0;
+                  while ($pos < length $t) {
+                    if (substr($t,$pos,1) eq "{") {
+                      my ($d,$i,$s,$e) = (1,$pos+1,0,0);
+                      while ($i < length($t) && $d > 0) {
+                        my $c = substr($t,$i,1);
+                        if ($e) { $e=0 }
+                        elsif ($s) { if ($c eq "\\") { $e=1 } elsif ($c eq "\"") { $s=0 } }
+                        elsif ($c eq "\"") { $s=1 }
+                        elsif ($c eq "{")  { $d++ }
+                        elsif ($c eq "}")  { $d-- }
+                        $i++;
+                      }
+                      if ($d == 0) {
+                        my $cand = substr($t,$pos,$i-$pos);
+                        push @found, $cand if $cand =~ /"version"\s*:\s*"$v"/;
+                      }
+                    }
+                    $pos++;
                   }
+                  print "$found[-1]\n" if @found;
                 ' \
               | tail -n1)"
     if [ -n "$found" ] && jq -e . <<<"$found" >/dev/null 2>&1; then
diff --git a/lefthook.yml b/lefthook.yml
index af474ef..e739101 100644
--- a/lefthook.yml
+++ b/lefthook.yml
@@ -120,7 +120,10 @@ pre-commit:
       glob: "*.sh"
       run: |
         if command -v shellcheck >/dev/null 2>&1; then
-          shellcheck {staged_files}
+          # --severity=error: SC2034 (warning) is a false positive in library
+          # files sourced by other scripts; pre-push shellcheck-full uses the
+          # same threshold for consistency.
+          shellcheck --severity=error {staged_files}
         else
           echo "::notice::shellcheck not installed; skipping shell lint"
         fi
@@ -312,7 +315,10 @@ pre-push:
           exit 0
         fi
         # shellcheck disable=SC2086
-        shellcheck $files
+        # Use --severity=error: SC2034 (warning) produces false positives in
+        # library files sourced by other scripts (variables appear unused to
+        # shellcheck but are consumed by the sourcing scripts).
+        shellcheck --severity=error $files
 
     yamllint-full:
       tags: lint
diff --git a/tests/actions/issue-extract-plan.bats b/tests/actions/issue-extract-plan.bats
index 0476348..8f10b01 100644
--- a/tests/actions/issue-extract-plan.bats
+++ b/tests/actions/issue-extract-plan.bats
@@ -126,6 +126,25 @@ JSONL
   echo "$plan" | grep -q '"skill":"escalate"'
 }
 
+@test "JSONL: plan with nested params objects is extracted (regression for #93)" {
+  # The (?R) recursive perl regex broke when action plan had nested {} objects,
+  # e.g. params:{"reason":"...","labels":["needs-human"]} inside an action entry.
+  local ef="${TMPDIR}/exec.jsonl"
+  cat >"$ef" <<'JSONL'
+{"type":"system","subtype":"init","message":"Claude Code initialized"}
+{"type":"assistant","message":{"role":"assistant","content":[{"type":"text","text":"```json\n{\"version\":\"issue-action-plan/v1\",\"reasoning\":\"nested\",\"actions\":[{\"id\":\"escalate\",\"skill\":\"escalate\",\"params\":{\"reason\":\"not parseable\",\"labels\":[\"needs-human\"]},\"risk\":\"low\"}],\"skip_reason\":null}\n```"}]}}
+{"type":"result","subtype":"success","is_error":false}
+JSONL
+
+  run_extract "false" "$ef"
+  [ "$status" -eq 0 ]
+
+  local plan
+  plan="$(get_output_var action-plan)"
+  echo "$plan" | grep -q '"reasoning":"nested"'
+  echo "$plan" | grep -q '"params"'
+}
+
 @test "no crash when the second jq receives empty input (regression for #81)" {
   # The original bug: extract returned an empty string and the canonicalize
   # step `jq -c . <<<"$plan"` then crashed with 'Invalid numeric literal at
diff --git a/tests/workflows/reusable/test-reusable-issue.sh b/tests/workflows/reusable/test-reusable-issue.sh
index c61fc2c..8b87dbf 100755
--- a/tests/workflows/reusable/test-reusable-issue.sh
+++ b/tests/workflows/reusable/test-reusable-issue.sh
@@ -658,7 +658,7 @@ else
     info "Created bug issue #${BUG_ISSUE}"
 
     # Wait for workflow
-    local run_id
+    run_id""
     if run_id=$(wait_for_workflow "issue-ops.yml"); then
       info "Workflow run: ${run_id}"
 
@@ -670,7 +670,7 @@ else
       fi
 
       # Wait for agent comment
-      local agent_body
+      agent_body
       if agent_body=$(wait_for_agent_comment "$BUG_ISSUE" "openci-agent-run"); then
         if validate_issue_plan "$(extract_plan_from_comment "$agent_body")" "bug-issue-plan"; then
           pass "Bug issue: valid issue-action-plan/v1 found"
@@ -696,11 +696,11 @@ else
     _CURRENT_ISSUE="$FEATURE_ISSUE"
     info "Created feature request issue #${FEATURE_ISSUE}"
 
-    local run_id2
+    run_id2
     if run_id2=$(wait_for_workflow "issue-ops.yml"); then
-      local agent_body2
+      agent_body2
       if agent_body2=$(wait_for_agent_comment "$FEATURE_ISSUE" "openci-agent-run"); then
-        local plan2
+        plan2
         plan2=$(extract_plan_from_comment "$agent_body2")
         if validate_issue_plan "$plan2" "feature-plan"; then
           # Check for enhancement label in plan