🎨 Palette: Add dynamic progress bar for quiet mode

.Jules/palette.md

@@ -5,6 +5,7 @@
 ## 2025-02-28 - Structured CLI Reports
 **Learning:** Dense numerical data in CLI output is hard to parse. Using ASCII box-drawing characters and alignment to create a "dashboard" or "invoice" style summary significantly improves readability and perceived quality.
 **Action:** When summarizing simulation or batch job results, always format the final report as a structured table or box rather than a list of print statements.
-## 2024-05-20 - Dynamic Progress Bar for Quiet CLI Tasks
-**Learning:** For long-running CLI processes that suppress verbose logging (e.g., `--quiet`), users lose system status visibility.
-**Action:** Implemented a dynamic progress bar using `\r` and `flush=True`, conditional on `sys.stdout.isatty()`, to provide status feedback without polluting non-interactive logs.
+
+## 2025-03-14 - Dynamic Progress Bars in Quiet CLI Modes
+**Learning:** For long-running CLI applications that support a `--quiet` flag (which normally suppresses verbose logging), providing a dynamic progress bar using `\r` and `flush=True` (conditional on `sys.stdout.isatty()`) offers a much better UX. It gives the user necessary status visibility during long executions without polluting non-interactive environments (like CI/CD) or file redirections.
+**Action:** Always consider replacing suppressed verbose output with a dynamic progress bar for long-running scripts when `--quiet` mode is active and the terminal is interactive.

bitcoin_trading_simulation.py

@@ -84,14 +84,11 @@ def simulate_trading(signals, initial_cash=10000, quiet=False):
 
     if not quiet:
         print(f"\n{Colors.HEADER}{Colors.BOLD}------ Daily Trading Ledger ------{Colors.ENDC}")
-    for idx, (i, row) in enumerate(signals.iterrows()):
-        if quiet and sys.stdout.isatty():
-            progress = (idx + 1) / len(signals)
-            bar_length = 30
-            filled_len = int(bar_length * progress)
-            bar = '█' * filled_len + '-' * (bar_length - filled_len)
-            print(f'\r{Colors.BLUE}Simulation Progress: |{bar}| {progress:.1%}{Colors.ENDC}', end='', flush=True)
 
+    total_days = len(signals)
+    show_progress = quiet and sys.stdout.isatty()
+
+    for idx, (i, row) in enumerate(signals.iterrows()):
         if i > 0:
             portfolio.loc[i, 'cash'] = portfolio.loc[i-1, 'cash']
             portfolio.loc[i, 'btc'] = portfolio.loc[i-1, 'btc']
@@ -118,6 +115,15 @@ def simulate_trading(signals, initial_cash=10000, quiet=False):
         if not quiet:
             print(f"Day {i}: Portfolio Value: ${portfolio.loc[i, 'total_value']:.2f}, "
                   f"Cash: ${portfolio.loc[i, 'cash']:.2f}, BTC: {portfolio.loc[i, 'btc']:.4f}")
+        elif show_progress:
+            progress = (idx + 1) / total_days
+            bar_length = 30
+            filled_length = int(bar_length * progress)
+            bar = '█' * filled_length + '-' * (bar_length - filled_length)
+            print(f"\r{Colors.CYAN}Simulating: [{bar}] {progress:.0%}{Colors.ENDC}", end='', flush=True)
+
+    if show_progress:
+        print()
 
     if quiet and sys.stdout.isatty():
         print()