🧪 test(kebab-cli): update cli_mcp_smoke tools/list assertion 4 → 6 (fb-31)

fb-31 added ingest_file + ingest_stdin MCP tools (Task 9) but the
spawn-based smoke test in cli_mcp_smoke.rs still asserted the fb-30
count of 4. Bump to 6 to match the live tools/list response.

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

crates/kebab-cli/tests/cli_mcp_smoke.rs

@@ -66,8 +66,8 @@ fn cli_mcp_initialize_then_tools_list() {
         .expect("tools/list result.tools must be an array");
     assert_eq!(
         tools.len(),
-        4,
-        "expected 4 tools (schema, doctor, search, ask), got {}: {list}",
+        6,
+        "expected 6 tools (schema, doctor, search, ask, ingest_file, ingest_stdin), got {}: {list}",
         tools.len()
     );