Reject invalid arguments instead of ignoring them

term_feed() returns bool and rejects a NULL terminal, a NULL buffer with
a nonzero length, and any flag bit it does not know. Unknown bits are
rejected now so that later flags can be added without changing what the
old calls mean.

term_new() returns NULL for a negative size component, columns above
TERM_MAX_COLS, a negative scrollback, or a cursor style outside the enum.
Zero still selects the default size and scrollback. It no longer clamps
bad values silently.

term_resize() rejects columns above TERM_MAX_COLS instead of clamping
them, which matches how it already rejects a size below 1.

Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>

0 files changed, 0 insertions, 0 deletions