oAlt worked overtime

Question

This is a cryptic crossword. The check mark will go to the first person who submits an answer with 1) an image of the completed crossword and 2) explanations for all clue answers. For users who cannot use Imgur, reproduce the completed crossword through table/code formatting.

Across

1. Perhaps Silicon Valley's Apple team finally meets current director (13)
9. Awkwardly posing, he left out something not meant to be said (4 2 3 6)
10. Saint converted young one, preventing from slipping (4-4)
11. Laugh at shop girl (6)
13. State damage obtained in ocean after grainy material covered central windows (3 6)
14. Urban area's "Absent Man", an imaginary figure (5)
15. Nothing to be found in department's warehouse (5)
17. Weak and incompetent, getting half of perfect score? (9)
19. Absolutely constant level in unit (6)
21. Cancelling an event's finale with lifeless surroundings (8)
24. Resume adding copper to your liquor, with one liter given to active organization (10 5)
25. Correct answer: "Cut the head of this crisp vegetable!" (5 8)

Down

1. A belt, one from Alexander (5)
2. No time's wasted in getting wet (7)
3. Go through a set of books about a pastry (9)
4. Fanatic briefly getting slower and slower, acquiring debts - good for the health? (10)
5. Applications of site in America, excluding tech field (4)
6. Revolutionary painting perhaps having no mineral (5)
7. Power and resistance brought up after leader's ousted in a series of... boat races (7)
8. Injured, take me in for drug (8)
12. This time, Herb ends career, making his room's interior cleaner (10)
13. Assistant on strike, opposing team (8)
14. Serve at small forests, with trees and shrubs along coasts (9)
16. Paragraph starter in retracted newspaper excerpt that leads to fight (7)
18. Integrated about islets - regularly happening (5-2)
20. A day gone: oAlt worked overtime for a dull one (5)
22. Customer that argues tips stores (5)
23. Uttered a sound (4)

Grid in table form:

1		2		3		4		5		6		7	■	■
	■		■		■		■		■		■		■	8
9
	■		■		■		■		■		■		■
10								■	11
■	■		■		■		■	12	■	■	■		■
13									■	14
	■	■	■		■		■		■		■	■	■
15		16			■	17						18
	■		■	■	■		■		■		■		■	■
19				20		■	21							22
	■		■		■	23	■		■		■		■
24
	■		■		■		■		■		■		■
■	■	25

Answer 1

Not easy to get into, but I liked the correct answer, Herb's room, the paragraph starter, the slowing down fanatic, the uttered sound and the awkward poser when I finally saw how they worked.

The grid:

Across

1. Perhaps Silicon Valley's Apple team finally meets current director (13)
 SEMICONDUCTOR = (valley)S + (appl)E + (tea)M + I ("current") + CONDUCTOR

9. Awkwardly posing, he left out something not meant to be said (4 2 3 6)
 SLIP OF THE TONGUE = (POSING HE LEFT OUT)*

10. Saint converted young one, preventing from slipping (4-4)
 ANTI-SKID = SAINT* + KID

11. Laugh at shop girl (6)
 MARTHA = MART + HA

13. State damage obtained in ocean after grainy material covered central windows (3 6)
 SAN MARINO = SAN(d) minus (win)D(ows) + MAR ("damage") + IN + O(cean)

14. Urban area's "Absent Man", an imaginary figure (5)
 MIAMI = MIA (Missing in Action, so "absent") + M ("man") + I, found by juicifer

15. Nothing to be found in department's warehouse (5)
 DEPOT = O ("nothing") in DEPT.

17. Weak and incompetent, getting half of perfect score? (9)
 UNTENABLE = TEN (half of perfect 20, since a score of something = 20 of something) in UN.ABLE

19. Absolutely constant level in unit (6)
 KELVIN = K ('kay, so "absolutely") + E (base of natural logarithm, so "constant") + LV ("level") + IN, with an &lit-tish touch

21. Cancelling an event's finale with lifeless surroundings (8)
 ABORTING = even(T) in A + BOR.ING

24. Resume adding copper to your liquor, with one liter given to active organization (10 5)
 CURRICULUM VITAE = CU in (IL (1 liter) in (UR ("your") + RUM)), all in ACTIVE*

25. Correct answer: "Cut the head of this crisp vegetable!" (5 8)
 WATER CHESTNUT = (ANSWER CUT THE)* + T(his)

Down

1. A belt, one from Alexander (5)
 SASHA (short form of Alexander) = SASH + A

2. No time's wasted in getting wet (7)
 MOISTEN = (NO TIMES)*

3. Go through a set of books about a pastry (9)
 CROISSANT = I in CRO.SS + A NT (New Testament, so "set of books")

4. Fanatic briefly getting slower and slower, acquiring debts - good for the health? (10)
 NUTRITIOUS = NUT + RIT (ritardando = getting slower and slower in music) + IOUS

5. Applications of site in America, excluding tech field (4)
 USES = S(it)E without IT in U.S

6. Revolutionary painting perhaps having no mineral (5)
 TRONA = (ON in A.RT)<

7. Power and resistance brought up after leader's ousted in a series of... boat races (7)
 REGATTA = ((w)ATTAGE + R)<

8. Injured, take me in for drug (8)
 KETAMINE = (TAKE ME IN)*

12. This time, Herb ends career, making his room's interior cleaner (10)
 TOOTHBRUSH = (r)OO(m) replaces (his) in (THIS + T + H(er)B + RUSH)

13. Assistant on strike, opposing team (8)
 SIDEKICK = SIDE ("opposing team") + KICK

14. Serve at small forests, with trees and shrubs along coasts (9)
 MANGROVES = MAN + GROVES

16. Paragraph starter in retracted newspaper excerpt that leads to fight (7)
 PILCROW (a sign to mark a paragraph) = CLIP< + ROW

18. Integrated about islets - regularly happening (5-2)
 BUILT-IN = (a)B(o)U(t) I(s)L(e)T(s) + IN ("happening")

20. A day gone: oAlt worked overtime for a dull one (5)
 IDIOT = a D (day) removed from I ("oAlt") + DID ("worked") + OT ("overtime")

22. Customer that argues tips stores (5)
 GUEST = ar(GUES T)ips

23. Uttered a sound (4)
 PURR = sounds like "per" ("a")