(USA) New glider inspections question

I met with a DAR today with the intent of getting the Certificate of
Airworthiness (Experimental, Exhibition/Racing) for the new glass
slipper, but he could not complete the transaction because the logbook
does not contain an entry indicating inspection within the last 30
days by an FAA certified mechanic. (Not an "annual" or "100 hour
inspection". Just an ... "inspection".)

He said this is based on FAA Order 8130.2F, Section 10, Paragraph 159
b. (5):

"Verify that the appropriately rated FAA-certificated mechanic has
made an entry in the
aircraft records documenting the applicable inspections as referenced
in paragraph 159 of this order for
all aircraft (including new) within 30 days prior to submitting Form
8130-6."

Reading through paragraph 159, and paragraph 88 that it references,
it's not clear to me (1) what kind of inspection is required (beyond
an inspection of records), or (2) why the FAA representative issuing
the C of A cannot be the same person who performs the required
inspection (if only records are being inspected).

What gives here? Are two inspections actually required? (The DAR did
his own inspection today, but says he still requires a logbook entry
from someone else first.)

-confyoozed