feat(p10-1a-2): add MediaType::Code(lang) variant

TDD: red → green cycle confirmed. New `Code(String)` variant serializes
as `{"code":"rust"}` via serde `rename_all = "lowercase"`. All exhaustive
`match` sites updated (`media_label`, `ingest_one_asset` catch-all →
explicit or-pattern). Design §3.5 enum listing synced. Also fix
`/target` symlink gitignore pattern so integration-test binary lookup
via workspace-relative path works with CARGO_TARGET_DIR redirect.

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

.gitignore

@@ -1,6 +1,7 @@
 .superpowers/
 .worktrees/
 .claude/
+/target
 /target/
 **/*.rs.bk
 Cargo.lock.bak

crates/kebab-app/src/ingest_progress.rs

@@ -96,6 +96,7 @@ pub fn media_label(media: &kebab_core::MediaType) -> &'static str {
         kebab_core::MediaType::Pdf => "pdf",
         kebab_core::MediaType::Image(_) => "image",
         kebab_core::MediaType::Audio(_) => "audio",
+        kebab_core::MediaType::Code(_) => "code",
         kebab_core::MediaType::Other(_) => "other",
     }
 }
@@ -148,6 +149,7 @@ mod tests {
             media_label(&MediaType::Audio(kebab_core::AudioType::Wav)),
             "audio"
         );
+        assert_eq!(media_label(&MediaType::Code("rust".into())), "code");
         assert_eq!(media_label(&MediaType::Other("x".into())), "other");
     }
 

crates/kebab-app/src/lib.rs

@@ -917,7 +917,8 @@ fn ingest_one_asset(
                 force_reingest,
             );
         }
-        _ => {
+        // p10-1A-2: Code dispatch wired in Task 8; skip until then.
+        MediaType::Code(_) | MediaType::Audio(_) | MediaType::Other(_) => {
             return Ok(kebab_core::IngestItem {
                 kind: kebab_core::IngestItemKind::Skipped,
                 doc_id: None,

crates/kebab-core/src/media.rs

@@ -40,5 +40,23 @@ pub enum MediaType {
     Pdf,
     Image(ImageType),
     Audio(AudioType),
+    /// p10-1A-2: a source-code file. Inner string is the canonical
+    /// code_lang (design §3.5). 1A activates `"rust"` only; other
+    /// recognized code langs are still routed `Other` until their phase.
+    Code(String),
     Other(String),
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn media_type_code_serializes_lowercase_tagged() {
+        let m = MediaType::Code("rust".to_string());
+        let v = serde_json::to_value(&m).unwrap();
+        assert_eq!(v, serde_json::json!({ "code": "rust" }));
+        let back: MediaType = serde_json::from_value(v).unwrap();
+        assert_eq!(back, m);
+    }
+}

docs/superpowers/specs/2026-04-27-kebab-final-form-design.md

@@ -488,6 +488,7 @@ pub enum MediaType {
     Pdf,
     Image(ImageType),
     Audio(AudioType),
+    Code(String), // p10-1A-2: source-code file; inner = canonical code_lang (e.g. "rust")
     Other(String),
 }