With ~24.1BB effective, open K8o from SB, then mostly check flop and turn on this wet, draw-heavy board; once BB jams turn, we’re getting ~3.2:1 and have enough equity to call.
On T-6-4 with two diamonds, the board is semi-wet and BB has a lot of diamond draws and small pairs. Solver prefers checking a lot here, but a small c-bet with K8o is reasonable as a mixed candidate. The 2.3BB sizing is fine, though a bit larger than the preferred 20% pot bet.
The 3d brings the third diamond and completes the front-door flush. Our hand now has a K-high flush draw with two overs and a decent amount of equity versus BB’s range. Solver leans toward checking here, but a small bet is acceptable as a mixed candidate. The 3.8BB sizing is reasonable, though a bit on the big side for this texture.
After we bet 3.8BB into 11BB, BB raises to 48.8BB, effectively jamming. We’re getting about 3.2:1 and need roughly 24% equity; with a K-high flush draw plus two overcards, we have enough equity to continue. Calling here is standard; folding would be too tight and jamming would be overplaying a draw.