diff --git a/README.md b/README.md
index 95623d2..96c4ece 100644
--- a/README.md
+++ b/README.md
@@ -125,7 +125,7 @@ Requirements → Architecture → Sprint Plan → Development → Review → QA
 ## Enterprise Workflow Features
 
 - **Multi-backend execution:** `codeagent-wrapper --backend codex|claude|gemini` (default `codex`) so you can match the model to the task without changing workflows.
-- **GitHub workflow commands:** `/gh-create-issue "short need"` creates structured issues; `/gh-implement 123` pulls issue #123, drives development, and prepares the PR.
+- **GitHub workflow commands:** `/gh-create-issue "short need"` creates structured issues; `/gh-issue-implement 123` pulls issue #123, drives development, and prepares the PR.
 - **Skills + hooks activation:** .claude/hooks run automation (tests, reviews), while `.claude/skills/skill-rules.json` auto-suggests the right skills. Keep hooks enabled in `.claude/settings.json` to activate the enterprise workflow helpers.
 
 ---
@@ -242,8 +242,6 @@ python3 install.py --module dev
 
 # Manual
 bash install.sh
-# Create legacy codex-wrapper alias (uses $INSTALL_DIR or ~/bin)
-bash scripts/install.sh
 ```
 
 #### Windows
diff --git a/README_CN.md b/README_CN.md
index 5516011..9dabf86 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -233,8 +233,6 @@ python3 install.py --module dev
 
 # 手动
 bash install.sh
-# 创建 codex-wrapper 兼容别名（使用 $INSTALL_DIR 或 ~/bin）
-bash scripts/install.sh
 ```
 
 #### Windows 系统
diff --git a/codeagent-wrapper/config.go b/codeagent-wrapper/config.go
index 3a3abfc..bee3a2a 100644
--- a/codeagent-wrapper/config.go
+++ b/codeagent-wrapper/config.go
@@ -249,6 +249,8 @@ func parseArgs() (*Config, error) {
 	return cfg, nil
 }
 
+const maxParallelWorkersLimit = 100
+
 func resolveMaxParallelWorkers() int {
 	raw := strings.TrimSpace(os.Getenv("CODEAGENT_MAX_PARALLEL_WORKERS"))
 	if raw == "" {
@@ -261,5 +263,10 @@ func resolveMaxParallelWorkers() int {
 		return 0
 	}
 
+	if value > maxParallelWorkersLimit {
+		logWarn(fmt.Sprintf("CODEAGENT_MAX_PARALLEL_WORKERS=%d exceeds limit, capping at %d", value, maxParallelWorkersLimit))
+		return maxParallelWorkersLimit
+	}
+
 	return value
 }
diff --git a/codeagent-wrapper/main_test.go b/codeagent-wrapper/main_test.go
index 508d89e..99bfc4a 100644
--- a/codeagent-wrapper/main_test.go
+++ b/codeagent-wrapper/main_test.go
@@ -3881,3 +3881,35 @@ func TestRun_CLI_Success(t *testing.T) {
 		t.Fatalf("unexpected output: %q", output)
 	}
 }
+
+func TestResolveMaxParallelWorkers(t *testing.T) {
+	tests := []struct {
+		name     string
+		envValue string
+		want     int
+	}{
+		{"empty env returns unlimited", "", 0},
+		{"valid value", "4", 4},
+		{"zero value", "0", 0},
+		{"at limit", "100", 100},
+		{"exceeds limit capped", "150", 100},
+		{"negative falls back to unlimited", "-1", 0},
+		{"invalid string falls back to unlimited", "abc", 0},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if tt.envValue != "" {
+				os.Setenv("CODEAGENT_MAX_PARALLEL_WORKERS", tt.envValue)
+			} else {
+				os.Unsetenv("CODEAGENT_MAX_PARALLEL_WORKERS")
+			}
+			defer os.Unsetenv("CODEAGENT_MAX_PARALLEL_WORKERS")
+
+			got := resolveMaxParallelWorkers()
+			if got != tt.want {
+				t.Errorf("resolveMaxParallelWorkers() = %d, want %d", got, tt.want)
+			}
+		})
+	}
+}
diff --git a/scripts/install.sh b/scripts/install.sh
deleted file mode 100755
index ca40b24..0000000
--- a/scripts/install.sh
+++ /dev/null
@@ -1,30 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-
-# Legacy alias installer: create codex-wrapper -> codeagent-wrapper symlink
-# in the configured install directory (defaults to ~/bin).
-
-BIN_DIR="${INSTALL_DIR:-"$HOME/bin"}"
-TARGET_NAME="codeagent-wrapper"
-LEGACY_NAME="codex-wrapper"
-
-mkdir -p "$BIN_DIR"
-cd "$BIN_DIR"
-
-if [[ ! -x "$TARGET_NAME" ]]; then
-  echo "ERROR: $BIN_DIR/$TARGET_NAME not found or not executable; install the wrapper first." >&2
-  exit 1
-fi
-
-if [[ -L "$LEGACY_NAME" ]]; then
-  echo "Legacy alias already present: $BIN_DIR/$LEGACY_NAME -> $(readlink "$LEGACY_NAME")"
-  exit 0
-fi
-
-if [[ -e "$LEGACY_NAME" ]]; then
-  echo "INFO: $BIN_DIR/$LEGACY_NAME exists and is not a symlink; leaving user-managed binary untouched." >&2
-  exit 0
-fi
-
-ln -s "$TARGET_NAME" "$LEGACY_NAME"
-echo "Created legacy alias $BIN_DIR/$LEGACY_NAME -> $TARGET_NAME"