feat: wizard detects bare projects and prompts user interview for context/stack

wizard_generate now checks if the project has no source code. On bare
projects, the generation hints tell the LLM to ask the user what they
want to build and what tech stack they plan to use, rather than trying
to read a nonexistent codebase.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

server/src/http/mcp/wizard_tools.rs

@@ -152,23 +152,68 @@ pub(super) fn tool_wizard_generate(args: &Value, ctx: &AppContext) -> Result<Str
     ))
 }
 
+/// Return true if the project directory has no meaningful source files.
+fn is_bare_project(project_root: &Path) -> bool {
+    let dominated_by_storkit = std::fs::read_dir(project_root)
+        .ok()
+        .map(|entries| {
+            let names: Vec<String> = entries
+                .filter_map(|e| e.ok())
+                .map(|e| e.file_name().to_string_lossy().to_string())
+                .collect();
+            // A bare project only has storkit scaffolding and no real code
+            names.iter().all(|n| {
+                n.starts_with('.')
+                    || n == "CLAUDE.md"
+                    || n == "LICENSE"
+                    || n == "README.md"
+                    || n == "script"
+                    || n == "store.json"
+            })
+        })
+        .unwrap_or(true);
+    dominated_by_storkit
+}
+
 /// Return a generation hint for a step based on the project root.
 fn generation_hint(step: WizardStep, project_root: &Path) -> String {
+    let bare = is_bare_project(project_root);
+
     match step {
         WizardStep::Context => {
+            if bare {
+                "This is a bare project with no existing code. Ask the user what they want \
+                 to build — the project's purpose, goals, target users, and key features. \
+                 Then generate `.storkit/specs/00_CONTEXT.md` from their answers covering:\n\
+                 - High-level goal of the project\n\
+                 - Core features\n\
+                 - Domain concepts and entities\n\
+                 - Glossary of abbreviations and technical terms".to_string()
+            } else {
                 "Read the project source tree and generate a `.storkit/specs/00_CONTEXT.md` describing:\n\
                  - High-level goal of the project\n\
                  - Core features\n\
                  - Domain concepts and entities\n\
                  - Glossary of abbreviations and technical terms".to_string()
             }
+        }
         WizardStep::Stack => {
+            if bare {
+                "This is a bare project with no existing code. Ask the user what language, \
+                 frameworks, and tools they plan to use. Then generate `.storkit/specs/tech/STACK.md` \
+                 from their answers covering:\n\
+                 - Language, frameworks, and runtimes\n\
+                 - Coding standards and linting rules\n\
+                 - Quality gates (commands that must pass before merging)\n\
+                 - Approved libraries and their purpose".to_string()
+            } else {
                 "Read the project source tree and generate a `.storkit/specs/tech/STACK.md` describing:\n\
                  - Language, frameworks, and runtimes\n\
                  - Coding standards and linting rules\n\
                  - Quality gates (commands that must pass before merging)\n\
                  - Approved libraries and their purpose".to_string()
             }
+        }
         WizardStep::TestScript => {
             let has_cargo = project_root.join("Cargo.toml").exists();
             let has_pkg = project_root.join("package.json").exists();