Allow CLAUDE_CONFIG_DIR as a wrapper contract global

The wrapper guard permits each agent's per-account home export by name
(CODEX_HOME, MIMOCODE_HOME, OPENCODE_CONFIG_DIR); CLAUDE_CONFIG_DIR is the
same contract and joins them. Snapshots regenerated after verifying the only
content change is the Claude restore line.

src/main/__fixtures__/shell-wrapper-snapshots/daemon-zsh-zshenv.txt

@@ -136,6 +136,8 @@ __orca_deferred_init() {
 
     # Why: Codex must keep using Orca's runtime CODEX_HOME after rc files.
     [[ -n "${ORCA_CODEX_HOME:-}" ]] && export CODEX_HOME="${ORCA_CODEX_HOME}"
+    # Why: Claude must keep using Orca's runtime config directory after rc files.
+    [[ -n "${ORCA_CLAUDE_CONFIG_DIR:-}" ]] && export CLAUDE_CONFIG_DIR="${ORCA_CLAUDE_CONFIG_DIR}"
     # Why: a typed alias expands inside the shell, after pane launch prep.
     # Why unalias inside the substitution: an alias named codex makes command -v
     # report the alias text, and the subshell leaves the user's own alias intact.

src/main/__fixtures__/shell-wrapper-snapshots/local-bash-rcfile.txt

@@ -101,6 +101,8 @@ fi
 
 # Why: Codex must keep using Orca's runtime CODEX_HOME after profile scripts.
 [[ -n "${ORCA_CODEX_HOME:-}" ]] && export CODEX_HOME="${ORCA_CODEX_HOME}"
+# Why: Claude must keep using Orca's runtime config directory after profile scripts.
+[[ -n "${ORCA_CLAUDE_CONFIG_DIR:-}" ]] && export CLAUDE_CONFIG_DIR="${ORCA_CLAUDE_CONFIG_DIR}"
 # Why: a typed alias expands inside the shell, after pane launch prep.
 # Why unalias inside the substitution: an alias named codex makes command -v
 # report the alias text, and the subshell leaves the user's own alias intact.

src/main/__fixtures__/shell-wrapper-snapshots/local-zsh-zshenv.txt

@@ -136,6 +136,8 @@ __orca_deferred_init() {
 
     # Why: Codex must keep using Orca's runtime CODEX_HOME after rc files.
     [[ -n "${ORCA_CODEX_HOME:-}" ]] && export CODEX_HOME="${ORCA_CODEX_HOME}"
+    # Why: Claude must keep using Orca's runtime config directory after rc files.
+    [[ -n "${ORCA_CLAUDE_CONFIG_DIR:-}" ]] && export CLAUDE_CONFIG_DIR="${ORCA_CLAUDE_CONFIG_DIR}"
     # Why: a typed alias expands inside the shell, after pane launch prep.
     # Why unalias inside the substitution: an alias named codex makes command -v
     # report the alias text, and the subshell leaves the user's own alias intact.

src/main/shell-wrapper-generated-file-snapshot.test.ts

@@ -67,6 +67,7 @@ async function expectWrapperFiles(transport: string, root: string): Promise<void
  */
 const CONTRACT_GLOBALS = new Set([
   'BUFFER',
+  'CLAUDE_CONFIG_DIR',
   'CODEX_HOME',
   'HISTFILE',
   'MIMOCODE_HOME',