v0.1.2 — fix doctor false-positive + brew formula /Applications crash

First friend-feedback patch. Two real bugs hit on macOS install.

Fixed

• Brew install crash on /Applications. The formula tried to write
  dj-edit-mac.command directly to /Applications via Ruby's File.write,
  which fails inside brew's install sandbox. Friend had to manually patch
  the formula to skip that step. Fix: install the .command into share/
  only; caveats instruct the user to copy it to /Applications themselves
  (one extra cp line, but no install crash).
• Doctor false-positive on filter detection. Friend's dj-edit doctor
  reported loudnorm (and earlier drawtext) as missing even though
  ffmpeg -filters | grep loudnorm showed them present. Root cause: the
  regex ^ ?[.TS]+ +<name> + was sensitive to ffmpeg's leading-whitespace
  pattern, which varies across versions/builds. Fix: parse column 2
  directly with awk ($2 == filter_name). Same fix on the encoder check.

Upgrade for existing users

brew upgrade dj-edit