unify: the continuous listing is the one code view; deprecate DisasmView

Full IDA-style unification. The function-bounded DisasmView is gone from the UI:
navigation opens ONE continuous segment listing (functions+data+undefined
interleaved) at the target; F5/Tab decompiles the function under the cursor and
back. The listing gained the opcode column (Head.raw, 'o' toggle) so rendering
matches disasm.

Routing: _do_navigate/_open_function/_open_entry target the listing;
_show_active drops disasm; _active in {listing,decomp,hex}; _pref=listing.
Decomp is a per-function toggle with a listing fallback on failure. Edits
reload in place (_reload_active_code); bump_names() drops the listing cache so
renames refresh. Listing 'n' is symbol-aware. ListingModel gains
cached_line/lines shims; Head.label. DisasmView removed from compose/handlers;
rpc updated. DisasmModel kept (domain/test_domain).

Tests migrated (c.dis->ListingView; open(decomp) F5s; xref/search re-pointed).
Per-scenario green across view_toggle/rename/follow_xrefs/xref_labels/decomp_*/
search/mouse/startup/continuous_view (30/1, 1 cold-decompile flake).

1 files changed, 2 insertions, 4 deletions

diff --git a/idatui/rpc.py b/idatui/rpc.py
index 5836057..908a26c 100644
--- a/idatui/rpc.py
+++ b/idatui/rpc.py
@@ -28,7 +28,7 @@ from typing import Any
 from rich.console import Console
 
 from ._sync import drain, settle
-from .app import DecompView, DisasmView, HexView, ListingView
+from .app import DecompView, HexView, ListingView
 
 PROTO_VERSION = 1
 TYPE_DELAY_MS = 35  # default per-char delay for high-level typed ops (aesthetic)
@@ -94,9 +94,7 @@ def _active_widget(app):
     """The currently *shown* code widget (mirrors app._active)."""
     if app._active == "hex":
         return app.query_one(HexView)
-    if app._active == "disasm":
-        return app.query_one(DisasmView)
-    if app._active == "listing":
+    if app._active in ("listing", "disasm"):
         return app.query_one(ListingView)
     return app.query_one(DecompView)