feat(kebab-app): p9-fb-25 task 3 — init_workspace header lists supported extensions

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

crates/kebab-app/src/lib.rs

@@ -146,6 +146,14 @@ pub fn init_workspace(force: bool) -> anyhow::Result<()> {
 #     — relative paths resolve against the directory of THIS
 #       config file, NOT the user's `cwd` at invocation time.
 #
+# 처리 가능한 형식 (extractor 가 자동 결정 — config 에 명시할 수 없음):
+#   • Markdown: .md
+#   • 이미지:   .png .jpg .jpeg  (OCR + caption)
+#   • PDF:      .pdf
+# 다른 확장자는 ingest 시 자동 skip + warning. 처리 대상 폴더의
+# 일부만 ingest 하고 싶으면 `kebab ingest <path>` 로 root 명시
+# 또는 `.kebabignore` 파일 / 본 `workspace.exclude` 로 denylist.
+#
 # Override individual keys at runtime with `KEBAB_*` env vars
 # (e.g. `KEBAB_WORKSPACE_ROOT=/tmp/test kebab ingest`).
 \n";

crates/kebab-app/tests/init_template.rs

@@ -0,0 +1,34 @@
+//! p9-fb-25 task 3: `kebab init` produces config.toml with a header
+//! comment listing the four supported extensions (md / png / jpg+jpeg
+//! / pdf) so a user editing the config knows what's processable.
+
+#[test]
+fn init_workspace_header_lists_supported_extensions() {
+    let tmp = tempfile::tempdir().expect("tempdir");
+    // SAFETY: Rust 2024 marks set_var as unsafe — wrap in unsafe block.
+    // Each test sets process-wide XDG_CONFIG_HOME to point at the
+    // tempdir; init_workspace writes config.toml relative to it.
+    unsafe {
+        std::env::set_var("XDG_CONFIG_HOME", tmp.path());
+        // Same dir for data + cache to avoid touching real user paths.
+        std::env::set_var("XDG_DATA_HOME", tmp.path().join("data"));
+        std::env::set_var("XDG_CACHE_HOME", tmp.path().join("cache"));
+        std::env::set_var("XDG_STATE_HOME", tmp.path().join("state"));
+    }
+    kebab_app::init_workspace(true).expect("init_workspace");
+    let cfg_path = kebab_config::Config::xdg_config_path();
+    let body = std::fs::read_to_string(&cfg_path).unwrap_or_else(|e| {
+        panic!("read config at {}: {e}", cfg_path.display())
+    });
+    assert!(
+        body.contains("처리 가능한 형식"),
+        "header lists supported types section: body=\n{body}"
+    );
+    assert!(body.contains("Markdown: .md"), "md listed");
+    assert!(body.contains(".png .jpg .jpeg"), "image extensions listed");
+    assert!(body.contains("PDF:      .pdf"), "pdf listed");
+    assert!(
+        !body.contains("workspace.include"),
+        "no leftover include reference"
+    );
+}