v0.3.2

Added

• Vertical file labels: file tiles that are at least twice as tall as wide now
  display their label rotated 90° CCW, letting the text span the full tile height
  instead of being squeezed into the narrow width.
• Scan and render timing shown in header output:
  Found 1,414 files … [2.3s] and Saved dirplot to out.png [0.4s].
• Multiple local roots: dirplot map src tests accepts two or more local
  directory paths, finds their common parent, and shows only those subtrees.
• --subtree / -s option (repeatable) — allowlist complement to --exclude:
  keep only the named direct children of the root after scanning. Supports nested
  paths such as --subtree src/dirplot/fonts.

Fixed

• --exclude on pod and Docker backends now prunes entire subtrees — previously only
  the exact path was matched, so all children leaked through.
• Clearer error for distroless pods: exit code 126 from kubectl exec now surfaces as
  an actionable message explaining that the container has no shell or find utility.
• Adaptive file-label font size is now computed with a single textbbox measurement
  (one call per tile) instead of stepping down one pixel at a time — eliminates an
  O(font_size × n_tiles) bottleneck that caused near-blocking on large trees such as
  .venv directories.

Changed

• -s short alias reassigned from --font-size to --subtree. --font-size still
  works as before; it just no longer has a single-letter alias.