fix(terminal): preserve user-enabled functrace traps

config/reliability-gates.jsonc

@@ -200,7 +200,7 @@
           "command": "pnpm exec vitest run --config config/vitest.config.ts src/main/daemon/repro-13767-shell-ready-marker-lost-to-exec.test.ts src/main/providers/local-pty-shell-ready.test.ts src/relay/pty-shell-launch.test.ts",
           "result": "passed",
           "durationSeconds": 4.65,
-          "summary": "All 107 focused local, daemon, and relay assertions passed, including real zsh/bash exec restoration, command modifiers, ZDOTDIR expansion ordering, and DEBUG trap invocation preservation."
+          "summary": "All 107 focused local, daemon, and relay assertions passed, including real zsh/bash exec restoration, command modifiers, ZDOTDIR expansion ordering, and DEBUG trap invocation preservation when the user enables functrace during startup."
         }
       ],
       "runtimeBudget": {
@@ -213,7 +213,7 @@
       },
       "redGreenEvidence": {
         "status": "complete",
-        "evidence": "PR head 05c0ac91dd1 failed the exact exec \"$ZDOTDIR/zsh-replacement\" oracle with status 127 after expanding the target inside Orca's wrapper directory. The just-in-time shim candidate passed that oracle plus all 107 focused assertions; the existing #13767 red/green evidence independently proves the original replacement-shell readiness failure."
+        "evidence": "PR head 05c0ac91dd1 failed the exact exec \"$ZDOTDIR/zsh-replacement\" oracle with status 127 after expanding the target inside Orca's wrapper directory. The just-in-time shim candidate passed that oracle plus all 107 focused assertions. The pre-fix Bash guard reported USER_DEBUG_NESTED=0 after a profile enabled functrace; the reviewed guard reports USER_DEBUG_NESTED=1 while keeping the ordinary non-functrace trap unmultiplied. The existing #13767 red/green evidence independently proves the original replacement-shell readiness failure."
       },
       "performanceBudget": {
         "required": true,

src/main/bash-startup-exec-preservation.ts

@@ -156,7 +156,8 @@ _orca_exec_command_check_body="$(declare -f __orca_startup_command_is_exec)"
 __orca_preserve_startup_exec() {
   local _orca_exec_command="$BASH_COMMAND"
   if [[ -n "\${_orca_exec_startup_chained_debug_trap:-}" ]] &&
-    { [[ "\${_orca_exec_functrace_was_set:-0}" == "1" ]] || (( \${#FUNCNAME[@]} <= 1 )); }; then
+    { [[ "\${_orca_exec_functrace_was_set:-0}" == "1" ||
+      "\${_orca_exec_user_enabled_functrace:-0}" == "1" ]] || (( \${#FUNCNAME[@]} <= 1 )); }; then
     eval "$_orca_exec_startup_chained_debug_trap" || true
   fi
   case "$_orca_exec_command" in

src/main/providers/local-pty-shell-ready.test.ts

@@ -641,17 +641,23 @@ describePosix('local PTY shell-ready launch config', () => {
     expect(output).toContain('CHILD_TEMP_PC=unset')
   })
 
-  itWithBash('preserves functrace enabled by a user profile', async () => {
+  itWithBash('preserves user-enabled functrace and nested DEBUG trap behavior', async () => {
     const { getBashShellReadyRcfileContent } = await importFreshLocalPtyShellReady()
-    writeFileSync(join(userDataPath, '.bash_profile'), 'set -T\n')
+    writeFileSync(
+      join(userDataPath, '.bash_profile'),
+      'set -T\nprofile_nested() { :; }\nprofile_nested\nprintf "USER_DEBUG_NESTED=%s\\n" "${USER_DEBUG_NESTED:-0}"\n'
+    )
+    const wrapper = `trap '[[ " \${FUNCNAME[*]} " != *" profile_nested "* ]] || USER_DEBUG_NESTED=1' DEBUG
+${getBashShellReadyRcfileContent()}`
 
     const output = runInteractiveBashRcfile(
-      getBashShellReadyRcfileContent(),
+      wrapper,
       userDataPath,
       "shopt -qo functrace && printf 'USER_FUNCTRACE_ON\\n'\nexit 0\n"
     )
 
     expect(output).toContain('USER_FUNCTRACE_ON')
+    expect(output).toContain('USER_DEBUG_NESTED=1')
   })
 
   itWithBash('does not multiply a pre-existing DEBUG trap inside startup functions', async () => {