Add AI default-agent mapping via harness-native config persistence

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QKxGW1raAWaqeU8WdHsMsp

bin/omarchy-cn-ai-default

@@ -0,0 +1,70 @@
+#!/bin/bash
+# omarchy:summary=Map an AI profile onto Omarchy's default agent and hotkey
+# omarchy:args=[profile]
+# omarchy:examples=omarchycn ai default | omarchycn ai default work
+
+set -euo pipefail
+
+source "$OMARCHY_PATH/cn/lib/ai.sh"
+
+profile="${1:-$(cn_ai_current_profile)}"
+
+if [[ ! -f $CN_AI_PROFILE_DIR/$profile.toml ]]; then
+  echo "No such profile: $profile" >&2
+  exit 1
+fi
+
+harness=$(cn_ai_profile_field "$profile" harness)
+provider=$(cn_ai_profile_field "$profile" provider)
+model=$(cn_ai_profile_field "$profile" model)
+
+# Only harnesses whose provider config persists in their own files can back
+# the upstream hotkey; opencode is session-env only, natives self-auth
+case "$harness" in
+claude-code) agent="claude" ;;
+codex) agent="codex" ;;
+*)
+  echo "$harness 无法映射为上游默认 Agent；用 omarchycn ai launch $profile 启动" >&2
+  exit 1
+  ;;
+esac
+
+key=$(omarchy-cn-ai-secret get "$provider")
+
+case "$harness" in
+claude-code)
+  # Persist provider env in Claude Code's own settings so the upstream
+  # Super+Shift+Ctrl+A -> omarchy-agent path launches fully configured
+  settings="$HOME/.claude/settings.json"
+  mkdir -p "${settings%/*}"
+  base=$(cn_ai_endpoint "$provider" anthropic)
+  fast=$(cn_ai_fast_model "$provider")
+  current="{}"
+  if [[ -s $settings ]]; then
+    current=$(cat "$settings")
+    cp "$settings" "$settings.omarchycn-bak-$(date +%Y%m%d-%H%M%S)"
+  fi
+  jq --arg base "$base" --arg key "$key" --arg model "$model" --arg fast "$fast" \
+    '.env = (.env // {}) + {
+      ANTHROPIC_BASE_URL: $base,
+      ANTHROPIC_AUTH_TOKEN: $key,
+      ANTHROPIC_API_KEY: $key,
+      ANTHROPIC_MODEL: $model,
+      ANTHROPIC_DEFAULT_SONNET_MODEL: $model,
+      ANTHROPIC_DEFAULT_OPUS_MODEL: $model,
+      ANTHROPIC_DEFAULT_HAIKU_MODEL: $fast
+    }' <<<"$current" > "$settings.omarchycn-new"
+  chmod 600 "$settings.omarchycn-new"
+  mv "$settings.omarchycn-new" "$settings"
+  ;;
+codex)
+  cn_ai_render_codex_config "$provider" "$model" "$key"
+  ;;
+esac
+
+agent_file="$HOME/.config/omarchy/defaults/agent"
+mkdir -p "${agent_file%/*}"
+printf '%s\n' "$agent" > "$agent_file"
+
+echo "默认 Agent: $agent（$profile: $provider x $model）"
+echo "快捷键 Super+Shift+Ctrl+A 或 'omarchy agent' 将以该配置启动"