fix: CLI/UX batch — ChatConsole errors, curses scroll, skin-aware banner, git state banner (#5974)

* fix(cli): route error messages through ChatConsole inside patch_stdout

Cherry-pick of PR #5798 by @icn5381.

Replace self.console.print() with ChatConsole().print() for 11 error/status
messages reachable during the interactive session. Inside patch_stdout,
self.console (plain Rich Console) writes raw ANSI escapes that StdoutProxy
mangles into garbled text. ChatConsole uses prompt_toolkit's native
print_formatted_text which renders correctly.

Same class of bug as #2262 — that fix covered agent output but missed
these error paths in _ensure_runtime_credentials, _init_agent, quick
commands, skill loading, and plan mode.

* fix(model-picker): add scrolling viewport to curses provider menu

Cherry-pick of PR #5790 by @Lempkey. Fixes #5755.

_curses_prompt_choice rendered items starting unconditionally from index 0
with no scroll offset. The 'More providers' submenu has 13 entries. On
terminals shorter than ~16 rows, items past the fold were never drawn.
When UP-arrow wrapped cursor from 0 to the last item (Cancel, index 12),
the highlight rendered off-screen — appearing as if only Cancel existed.

Adds scroll_offset tracking that adjusts each frame to keep the cursor
inside the visible window.

* feat(cli): skin-aware compact banner + git state in startup banner

Combined salvage of PR #5922 by @ASRagab and PR #5877 by @xinbenlv.

Compact banner changes (from #5922):
- Read active skin colors and branding instead of hardcoding gold/NOUS HERMES
- Default skin preserves backward-compatible legacy branding
- Non-default skins use their own agent_name and colors

Git state in banner (from #5877):
- New format_banner_version_label() shows upstream/local git hashes
- Full banner title now includes git state (upstream hash, carried commits)
- Compact banner line2 shows the version label with git state
- Widen compact banner max width from 64 to 88 to fit version info

Both the full Rich banner and compact fallback are now skin-aware
and show git state.

cli.py

@@ -63,7 +63,7 @@ from agent.usage_pricing import (
     format_duration_compact,
     format_token_count_compact,
 )
-from hermes_cli.banner import _format_context_length
+from hermes_cli.banner import _format_context_length, format_banner_version_label
 
 _COMMAND_SPINNER_FRAMES = ("⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏")
 
@@ -1036,21 +1036,44 @@ COMPACT_BANNER = """
 
 def _build_compact_banner() -> str:
     """Build a compact banner that fits the current terminal width."""
-    w = min(shutil.get_terminal_size().columns - 2, 64)
+    try:
+        from hermes_cli.skin_engine import get_active_skin
+        _skin = get_active_skin()
+    except Exception:
+        _skin = None
+
+    skin_name = getattr(_skin, "name", "default") if _skin else "default"
+    border_color = _skin.get_color("banner_border", "#FFD700") if _skin else "#FFD700"
+    title_color = _skin.get_color("banner_title", "#FFBF00") if _skin else "#FFBF00"
+    dim_color = _skin.get_color("banner_dim", "#B8860B") if _skin else "#B8860B"
+
+    if skin_name == "default":
+        line1 = "⚕ NOUS HERMES - AI Agent Framework"
+        tiny_line = "⚕ NOUS HERMES"
+    else:
+        agent_name = _skin.get_branding("agent_name", "Hermes Agent") if _skin else "Hermes Agent"
+        line1 = f"{agent_name} - AI Agent Framework"
+        tiny_line = agent_name
+
+    version_line = format_banner_version_label()
+
+    w = min(shutil.get_terminal_size().columns - 2, 88)
     if w < 30:
-        return "\n[#FFBF00]⚕ NOUS HERMES[/] [dim #B8860B]- Nous Research[/]\n"
+        return f"\n[{title_color}]{tiny_line}[/] [dim {dim_color}]- Nous Research[/]\n"
+
     inner = w - 2  # inside the box border
     bar = "═" * w
-    line1 = "⚕ NOUS HERMES - AI Agent Framework"
-    line2 = "Messenger of the Digital Gods  ·  Nous Research"
+    content_width = inner - 2
+
     # Truncate and pad to fit
-    line1 = line1[:inner - 2].ljust(inner - 2)
-    line2 = line2[:inner - 2].ljust(inner - 2)
+    line1 = line1[:content_width].ljust(content_width)
+    line2 = version_line[:content_width].ljust(content_width)
+
     return (
-        f"\n[bold #FFD700]╔{bar}╗[/]\n"
-        f"[bold #FFD700]║[/] [#FFBF00]{line1}[/] [bold #FFD700]║[/]\n"
-        f"[bold #FFD700]║[/] [dim #B8860B]{line2}[/] [bold #FFD700]║[/]\n"
-        f"[bold #FFD700]╚{bar}╝[/]\n"
+        f"\n[bold {border_color}]╔{bar}╗[/]\n"
+        f"[bold {border_color}]║[/] [{title_color}]{line1}[/] [bold {border_color}]║[/]\n"
+        f"[bold {border_color}]║[/] [dim {dim_color}]{line2}[/] [bold {border_color}]║[/]\n"
+        f"[bold {border_color}]╚{bar}╝[/]\n"
     )
 
 
@@ -2163,7 +2186,7 @@ class HermesCLI:
             )
         except Exception as exc:
             message = format_runtime_provider_error(exc)
-            self.console.print(f"[bold red]{message}[/]")
+            ChatConsole().print(f"[bold red]{message}[/]")
             return False
 
         api_key = runtime.get("api_key")
@@ -2378,7 +2401,7 @@ class HermesCLI:
                     self._pending_title = None
             return True
         except Exception as e:
-            self.console.print(f"[bold red]Failed to initialize agent: {e}[/]")
+            ChatConsole().print(f"[bold red]Failed to initialize agent: {e}[/]")
             return False
     
     def show_banner(self):
@@ -4530,13 +4553,13 @@ class HermesCLI:
                             if output:
                                 self.console.print(_rich_text_from_ansi(output))
                             else:
-                                self.console.print("[dim]Command returned no output[/]")
+                                ChatConsole().print("[dim]Command returned no output[/]")
                         except subprocess.TimeoutExpired:
-                            self.console.print("[bold red]Quick command timed out (30s)[/]")
+                            ChatConsole().print("[bold red]Quick command timed out (30s)[/]")
                         except Exception as e:
-                            self.console.print(f"[bold red]Quick command error: {e}[/]")
+                            ChatConsole().print(f"[bold red]Quick command error: {e}[/]")
                     else:
-                        self.console.print(f"[bold red]Quick command '{base_cmd}' has no command defined[/]")
+                        ChatConsole().print(f"[bold red]Quick command '{base_cmd}' has no command defined[/]")
                 elif qcmd.get("type") == "alias":
                     target = qcmd.get("target", "").strip()
                     if target:
@@ -4545,9 +4568,9 @@ class HermesCLI:
                         aliased_command = f"{target} {user_args}".strip()
                         return self.process_command(aliased_command)
                     else:
-                        self.console.print(f"[bold red]Quick command '{base_cmd}' has no target defined[/]")
+                        ChatConsole().print(f"[bold red]Quick command '{base_cmd}' has no target defined[/]")
                 else:
-                    self.console.print(f"[bold red]Quick command '{base_cmd}' has unsupported type (supported: 'exec', 'alias')[/]")
+                    ChatConsole().print(f"[bold red]Quick command '{base_cmd}' has unsupported type (supported: 'exec', 'alias')[/]")
             # Check for plugin-registered slash commands
             elif base_cmd.lstrip("/") in _get_plugin_cmd_handler_names():
                 from hermes_cli.plugins import get_plugin_command_handler
@@ -4572,7 +4595,7 @@ class HermesCLI:
                     if hasattr(self, '_pending_input'):
                         self._pending_input.put(msg)
                 else:
-                    self.console.print(f"[bold red]Failed to load skill for {base_cmd}[/]")
+                    ChatConsole().print(f"[bold red]Failed to load skill for {base_cmd}[/]")
             else:
                 # Prefix matching: if input uniquely identifies one command, execute it.
                 # Matches against both built-in COMMANDS and installed skill commands so
@@ -4633,14 +4656,14 @@ class HermesCLI:
         )
 
         if not msg:
-            self.console.print("[bold red]Failed to load the bundled /plan skill[/]")
+            ChatConsole().print("[bold red]Failed to load the bundled /plan skill[/]")
             return
 
         _cprint(f"  📝 Plan mode queued via skill. Markdown plan target: {plan_path}")
         if hasattr(self, '_pending_input'):
             self._pending_input.put(msg)
         else:
-            self.console.print("[bold red]Plan mode unavailable: input queue not initialized[/]")
+            ChatConsole().print("[bold red]Plan mode unavailable: input queue not initialized[/]")
     
     def _handle_background_command(self, cmd: str):
         """Handle /background <prompt> — run a prompt in a separate background session.