v0.1.5

Changed

• The search index is a command, not a lane inside the find and grep
  tools. 0.1.4 left those two tools answering differently depending on the
  directory, the pattern and a decade of glob semantics — and a missed rule
  there is a wrong answer, not a slow one. find and grep are fd/rg
  again, unconditionally, and gray find PATTERN [PATH] / gray grep PATTERN [PATH] own the index: the same answer, served warm, with the fallback lane
  being the very tool the command stands in for. Both are claimed by bash like
  gray view, so a model reaches them without gray on its PATH.

  The policy is cost-first, which the tool placement had hidden: the index
  lives in process memory, so a fresh process holding none paid a full scan —
  1.4s against fd's 20ms on a 20k-file repo, a "speedup" 70x slower than the
  shell it replaced. Now the first search in a process goes to fd/rg and
  starts the index in the background; every search after that is index-served.
  Cold gray find on that repo: 21ms. What the index is actually worth is
  grep on repeat searches (2.9x the tool lane); find is a wash.

• cat is no longer a second way to see a picture. It returned a
  full-resolution vision block while gray view capped at the shared 2000px,
  so the model had two paths with two answers and picked by habit. gray view
  is now the only one: cat <media> says so in one line instead of streaming
  binary into the context. Same text, same tool, one fewer thing to learn.

Fixed

• A search cancelled before it starts now answers cancelled by user
  instead of racing the spawned fd/rg child's first line, which could
  return a finished result for a call the caller had already given up on.