Implement Option B: CS Core on host, agents inside container

- New lib/container.sh generates three files per project:
  - bin/claude: wrapper that routes every claude call into the
    agents container via `podman/docker exec --workdir $PWD`
  - start.sh: builds image if missing, starts detached container
    with project mounted at same absolute path as host, prepends
    bin/ to PATH, then launches CS Core on the host
  - stop.sh: stops and removes the agents container

- Container mounts project at identical host path so CS Core's
  working directory paths resolve correctly inside the container
- TTY detection in wrapper: uses -it when stdin is a terminal,
  -i otherwise (node-pty compatibility)
- Container stopped automatically when CS Core exits

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

wizard.sh

@@ -11,6 +11,7 @@ source "$WIZARD_DIR/lib/prereqs.sh"
 source "$WIZARD_DIR/lib/core.sh"
 source "$WIZARD_DIR/lib/project.sh"
 source "$WIZARD_DIR/lib/workflow.sh"
+source "$WIZARD_DIR/lib/container.sh"
 
 # ── Find existing projects base dir ───────────────────────────────────────
 find_projects_dir() {
@@ -91,8 +92,12 @@ confirm_summary() {
 build_project() {
     header "Building Project"
 
+    local slug
+    slug="$(slugify "$PROJECT_NAME")"
+
     create_project_structure "$PROJECT_DIR" "$PROJECT_NAME"
     create_devcontainer      "$PROJECT_DIR" "$PROJECT_NAME"
+    generate_container_scripts "$PROJECT_DIR" "$PROJECT_NAME" "$slug"
 
     if [[ "${WORKFLOW_SOURCE:-}" == "Clone from existing repo" ]]; then
         clone_workflow "$PROJECT_DIR" "${WORKFLOW_REPO:-}"
@@ -120,25 +125,22 @@ print_next_steps() {
     echo -e "${BOLD}${GREEN}  ➜  Enter your project now:${RESET}"
     echo -e "${BOLD}${CYAN}     cd \"$PROJECT_DIR\"${RESET}"
     echo ""
-    echo -e "${BOLD}Next steps:${RESET}"
+    echo -e "${BOLD}Start everything:${RESET}"
+    echo -e "  ${CYAN}./start.sh${RESET}"
+    echo -e "  Builds the image (first time), starts the agents container,"
+    echo -e "  then launches Context Studio Core on your host."
     echo ""
-    echo -e "  ${CYAN}Option A — VS Code devcontainer:${RESET}"
-    echo -e "    code \"$PROJECT_DIR\""
-    echo -e "    → \"Reopen in Container\""
+    echo -e "${BOLD}Stop the container:${RESET}"
+    echo -e "  ${CYAN}./stop.sh${RESET}"
     echo ""
-    echo -e "  ${CYAN}Option B — CLI (must be inside the project folder):${RESET}"
-    echo -e "    cd \"$PROJECT_DIR\""
-    echo -e "    $CONTAINER_CMD build -t $slug .devcontainer/"
-    echo -e "    $CONTAINER_CMD run -it --rm \\"
-    echo -e "      -v \"\$(pwd)\":/workspace \\"
-    echo -e "      -v \"\$HOME/.context-studio/core\":/opt/context-studio/core \\"
-    echo -e "      -e ANTHROPIC_API_KEY=\"\$ANTHROPIC_API_KEY\" \\"
-    echo -e "      $slug bash"
+    echo -e "${BOLD}How it works:${RESET}"
+    echo -e "  • Context Studio Core runs on your host (Electron UI, no display issues)"
+    echo -e "  • Claude Code agents run inside container ${CYAN}cs-${slug}${RESET}"
+    echo -e "  • ${CYAN}bin/claude${RESET} intercepts every agent call and routes it into the container"
+    echo -e "  • Project files are mounted at the same path on host and in container"
     echo ""
-    echo -e "  ${CYAN}Inside container — start Context Studio:${RESET}"
-    echo -e "    node \$CS_CORE_DIR/core/start.js"
-    echo -e "    # or headless (no Electron):"
-    echo -e "    node \$CS_CORE_DIR/core/start.js --ui-mode=headless"
+    echo -e "${BOLD}VS Code (for editing):${RESET}"
+    echo -e "  ${CYAN}code \"$PROJECT_DIR\"${RESET}  → \"Reopen in Container\""
     echo ""
 }