i didn't leave! I'm still here!
Takoma Park ain't DC (though part of it is in the district) and you may find somewhat soon that you want to move further in.
There are lots of trails-- and trail maps-- around the district, but the best place to ride fixed is Hanes Point, which has this flat, fast, one-way paved loop that's about 3.2 miles around. Lots of bike porn out there. Tons.
asylum downstairs is a messer haunt, as is toledo, both on 18th st in adams morgan. we have few veggie restaurants but check out the veggie soul food place on georgia ave near howard u and nirvana indian downtown. asylum has vegan food for dinner or brunch. everywhere here is veggie-friendly though, and you'll find that the ethiopian food rocks. there is plenty of good thai in the district, incl. thaiphoon in dupont circle, the regent on 18th st, or the pricer but oh so tasty rice on 14th st. also, the black cat (a bar/live music place) has a place in it called food for thought, which has tasty veggie and vegan options, like a great bbq seitan or vegan nachos. yummy.
for cheap used parts, chain reaction at 6th and R is the way to go. for new stuff, city bikes.