diff --git a/src/hooks/non-interactive-env/constants.ts b/src/hooks/non-interactive-env/constants.ts
index d9a5937..2636802 100644
--- a/src/hooks/non-interactive-env/constants.ts
+++ b/src/hooks/non-interactive-env/constants.ts
@@ -14,4 +14,56 @@ export const NON_INTERACTIVE_ENV: Record<string, string> = {
   // Block pagers
   GIT_PAGER: "cat",
   PAGER: "cat",
+  // NPM non-interactive
+  npm_config_yes: "true",
+  // Pip non-interactive
+  PIP_NO_INPUT: "1",
+  // Yarn non-interactive
+  YARN_ENABLE_IMMUTABLE_INSTALLS: "false",
 }
+
+/**
+ * Shell command guidance for non-interactive environments.
+ * These patterns should be followed to avoid hanging on user input.
+ */
+export const SHELL_COMMAND_PATTERNS = {
+  // Package managers - always use non-interactive flags
+  npm: {
+    bad: ["npm init", "npm install (prompts)"],
+    good: ["npm init -y", "npm install --yes"],
+  },
+  apt: {
+    bad: ["apt-get install pkg"],
+    good: ["apt-get install -y pkg", "DEBIAN_FRONTEND=noninteractive apt-get install pkg"],
+  },
+  pip: {
+    bad: ["pip install pkg (with prompts)"],
+    good: ["pip install --no-input pkg", "PIP_NO_INPUT=1 pip install pkg"],
+  },
+  // Git operations - always provide messages/flags
+  git: {
+    bad: ["git commit", "git merge branch", "git add -p", "git rebase -i"],
+    good: ["git commit -m 'msg'", "git merge --no-edit branch", "git add .", "git rebase --no-edit"],
+  },
+  // System commands - force flags
+  system: {
+    bad: ["rm file (prompts)", "cp a b (prompts)", "ssh host"],
+    good: ["rm -f file", "cp -f a b", "ssh -o BatchMode=yes host", "unzip -o file.zip"],
+  },
+  // Banned commands - will always hang
+  banned: [
+    "vim", "nano", "vi", "emacs",           // Editors
+    "less", "more", "man",                   // Pagers
+    "python (REPL)", "node (REPL)",          // REPLs without -c/-e
+    "git add -p", "git rebase -i",           // Interactive git modes
+  ],
+  // Workarounds for scripts that require input
+  workarounds: {
+    yesPipe: "yes | ./script.sh",
+    heredoc: `./script.sh <<EOF
+option1
+option2
+EOF`,
+    expectAlternative: "Use environment variables or config files instead of expect",
+  },
+} as const