Great photos - careful anaysis underway.
Some minor dings on safety lug but this probably occured before bolt was blued & not related to actual use. The safety lug is designed not to contact the its recess in the receiver except for brief & minor contact at the cam surface at upper left corner (bolt handle up) when bolt is closed - that's why that surface is approx 45 degrees. Look at the upper surface of safety lug (bolt handle up) and you should see no wearing on blueing that would indicate contact. Minor blue wear on cam surface of left locking (lug with ejector slot) lug but none on bearing surface of left lug. Not a big deal but might indicate lug not contacting recess in receiver - needs some inspection. If it shoots good no worries about lug contact. Possibly rifle has not been used enough to show wear on lug surface. Lapping lugs upon a re-barrel job is a good idea.
The Mauser is designed as a battle rifle - complete dissasembly of bolt no big deal. Tools not needed. Wear safery glasses to keep spring & parts out of face. Get wood board or piece of metal stong enough to resist spring force. Drill 1/4 inch hole completely thru board or metal. Clamp board or metal to bench with C clamp or vise. Put firing pin in hole, point down where shoulder of firing pin contacts top hole - not firing pin point - depress sping by pushing down on bolt shroud, then turn cocking piece 1/4 turn & lift cocking piece off end of firing pin being careful to keep 25 or so pound spring contained. I always have a spare spring.
Brass looks real nice, primers look what you would expect to see with normal 6.5-06 loads. No signs of incipient head separation - head space probably adequate, no primer signs of excessive head space (super flat) . No prmer cratering indicating tight firing pin fit. Mauser bolt faces are incredibly hard steel. Ejector looks real good. I don't see wearing or drag marks on bolt guide showing screw on mount base not contacting bolt guide.
My own preferences are:
Clean bolt innards with Hornady One Shot cleaner & lube. Clean inside bolt & clean firing pin hole in bolt with pipe cleaner. Look for wear marks on firing pin spring indicating scuffing contact with inside of bolt. I lube camming surfaces on lugs & bolt/cocking piece surfaces with a light dab of water proof wheel bearing grease. Inside of bolt & trigger got to be grease/oil free. Hornady One Shot works real good & no other bolt innard/tigger lube needed. I clean rifle bores with foamng bore cleaner, 5W-20 synthetic motor oil, patches & nylon bore brush. Surfacants & bore scrubbing. JB now & then.
I have been shooting 52 grains of RamShot Hunter & 120 Barnes Match Burner or Hornady 120-123 ELDM bullets.