feat(config): enhance kitty tab bar icons and multi-process detection

dot_config/kitty/tab_bar.py

@@ -36,7 +36,7 @@ ICONS: dict[str, str] = {
     'helix': EDITOR,
     # agents / harnesses
     'claude': '\U000f06a9',  # nf-md-robot
-    'omp': '\U000f09da',  # nf-md-brain
+    'omp': '\uf2db',  # nf-fa-microchip
     'opencode': '\uf121',  # nf-fa-code
     'crush': '\uf0e7',  # nf-fa-bolt
     'codex': '\uf120',  # nf-fa-terminal
@@ -53,7 +53,7 @@ ICONS: dict[str, str] = {
     'docker': '\uf308',
     'docker-compose': '\uf308',
     'podman': '\uf308',
-    'kubectl': '\ue7b2',  # nf-dev-kubernetes
+    'kubectl': '\U000f10fe',  # nf-md-kubernetes
     # multiplexers / terminals-in-terminals
     'herdr': '\uf009',  # nf-fa-th_large — panes
     'tmux': '\uf00a',  # nf-fa-th
@@ -113,7 +113,7 @@ _repo: dict[str, str] = {}
 
 def draw_title(data: dict[str, Any]) -> str:
     tab = data['tab']
-    program = _program(_cmdline(data['tab_id']), tab.active_exe)
+    program = _program(_cmdlines(data['tab_id']), tab.active_exe)
     index = data['index']
     if program in EDITORS:
         edited = _nvim_file(data['title'])
@@ -127,25 +127,47 @@ def draw_title(data: dict[str, Any]) -> str:
     return f'{index} {icon} {_elide(label or data["title"])}'
 
 
-def _cmdline(tab_id: int) -> list[str]:
-    """argv of the tab's active window's foreground process, [] if unavailable."""
+def _cmdlines(tab_id: int) -> list[list[str]]:
+    """argv of every foreground process of the tab's active window.
+
+    All of them, not just `foreground_cmdline`: an editor commonly has LSP/agent
+    children in the same process group, and kitty's single "process for cwd" can
+    be either one of them.
+    """
     from kitty.boss import get_boss
 
     try:
         tab = get_boss().tab_for_id(tab_id)
         window = tab.active_window if tab is not None else None
-        return list(window.child.foreground_cmdline) if window is not None else []
+        if window is None:
+            return []
+        return [list(p['cmdline'] or ()) for p in window.child.foreground_processes]
     except Exception:
         return []
 
 
-def _program(cmdline: list[str], fallback_exe: str) -> str:
-    """Program name a tab should be iconified by.
+def _program(cmdlines: list[list[str]], fallback_exe: str) -> str:
+    """Program a tab should be iconified by, across its foreground processes.
 
-    Walks the cmdline past runners and flags: `node …/claude` is claude, an
-    unknown script keeps its runtime's icon (`uv run python train.py` is
-    python, `bun run dev` is bun), and a bare `python` stays python. Falls back
-    to kitty's own exe for the active window when the cmdline is unreadable.
+    An editor wins over anything else (nvim with a node LSP child is nvim), then
+    the first process with an icon, then whatever the first process is.
+    """
+    names = [name for cmdline in cmdlines if (name := _resolve(cmdline))]
+    for name in names:
+        if name in EDITORS:
+            return name
+    for name in names:
+        if name in ICONS:
+            return name
+    return names[0] if names else _canonical(os.path.basename(fallback_exe or '').lower())
+
+
+def _resolve(cmdline: list[str]) -> str:
+    """Program name of one cmdline.
+
+    Walks past runners and flags: `node …/claude` is claude, an unknown script
+    keeps its runtime's icon (`uv run python train.py` is python, `bun run dev`
+    is bun), and a bare `python` stays python.
     """
     runtime = ''
     skipped = False
@@ -163,7 +185,7 @@ def _program(cmdline: list[str], fallback_exe: str) -> str:
             runtime = runtime or (name if name in ICONS else '')
             continue
         return name if name in ICONS or not runtime else runtime
-    return runtime or _canonical(os.path.basename(fallback_exe or '').lower())
+    return runtime
 
 
 def _canonical(name: str) -> str: