fix: clean up update TUI output and suppress noisy stderr

- Add dedicated render branch for self_update results.
- Hide progress-only stderr on success to eliminate pipx noise.
- Remove generic "RESULT" heading from fallback key-value output.
- Bump version to 2.0.3.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "coinhunter"
-version = "2.0.2"
+version = "2.0.3"
 description = "Binance-first trading CLI for balances, market data, opportunity scanning, and execution."
 readme = "README.md"
 license = {text = "MIT"}

src/coinhunter/runtime.py

@@ -328,6 +328,23 @@ def _render_tui(payload: Any) -> None:
                 print(f"      {_DIM}{metric_str}{_RESET}")
         return
 
+    if "command" in payload and "returncode" in payload:
+        rc = payload.get("returncode", 0)
+        stdout = payload.get("stdout", "")
+        stderr = payload.get("stderr", "")
+        if rc == 0:
+            print(f"\n{_GREEN}✓{_RESET}  Update completed")
+        else:
+            print(f"\n{_RED}✗{_RESET}  Update failed  (exit code {rc})")
+        if stdout:
+            for line in stdout.strip().splitlines():
+                print(f"   {line}")
+        if rc != 0 and stderr:
+            print(f"  {_YELLOW}Details:{_RESET}")
+            for line in stderr.strip().splitlines():
+                print(f"   {line}")
+        return
+
     # Generic fallback for single-list payloads
     if len(payload) == 1:
         key, value = next(iter(payload.items()))
@@ -336,9 +353,13 @@ def _render_tui(payload: Any) -> None:
             return
 
     # Simple key-value fallback
-    print(f"\n{_BOLD}{_CYAN} RESULT {_RESET}")
     for key, value in payload.items():
-        print(f"  {key}: {value}")
+        if isinstance(value, str) and "\n" in value:
+            print(f"  {key}:")
+            for line in value.strip().splitlines():
+                print(f"    {line}")
+        else:
+            print(f"  {key}: {value}")
 
 
 def print_output(payload: Any, *, agent: bool = False) -> None: