Make the macOS shell a first-class host

Pty children are exec'd with their own TERM/COLORTERM/TERM_PROGRAM instead of
inheriting a .app launch's empty environment, and ttyTaken finally answers on
darwin — libproc walks the tty's foreground process group — so Escape reaches
the child and Exec stops believing every pane sits at its prompt. The
occupancy suite runs on both platforms now.

The workspace tag row moves into the native menu bar as a Builtins menu.
-Dworkspace-tag (default off for -Dplatform=macos, on everywhere else) drives
it, and Pardes.topBarHeight replaces the TOPBAR_H constant so the core stops
reserving the row.

The view pins every variable-font axis to the file's own default (Maple Mono
came up Thin otherwise), shapes ligatures, carries per-shape pointer cursors,
and draws the look-hover affordance as refracted glass. Tag rows fill edge to
edge, with the anchor box painted back on top of that fill and its mode glyph
centred on the same square. Theme accents re-saturated across the set.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>

1 files changed, 12 insertions, 0 deletions

diff --git a/src/CHANGELOG.md b/src/CHANGELOG.md
index 18bcceb9..e518f97a 100644
--- a/src/CHANGELOG.md
+++ b/src/CHANGELOG.md
@@ -2,6 +2,18 @@
 
 ## 0.0.3
 
+- Give pty children their own terminal identity. `TERM`, `COLORTERM` and
+  `TERM_PROGRAM` are now written by pardes rather than inherited from whatever
+  launched it, and the child is exec'd with that environment. A macOS `.app`
+  launch supplies no `TERM` at all, so until now `clear` failed, nothing
+  painted a colour, and every cursor-addressing program fell back to printing
+  lines.
+- Answer tty occupancy on macOS. `ttyTaken` had no darwin implementation and
+  said `false` for every pane, which made `Pardes.takesCommandLine` permanently
+  true: a bare Escape in a raw terminal ran the `Last` builtin instead of
+  reaching the child, and `Exec` always believed the pane sat at its prompt.
+  libproc answers it from the tty's foreground process group, and the
+  occupancy suite now runs on both platforms instead of only Linux.
 - Flatten the 9P control tree: `self/` is gone, so `/index`, `/pane/<n>/`,
   `/screen` and `/os` sit at the root. `/new` is one clone file (reading it
   makes a pane and answers its serial), `/ctl` takes `look TEXT` and