feat: initial sunbeam CLI package

stdlib-only Python CLI replacing infrastructure/scripts/sunbeam.py.
Verbs: up, down, status, apply, seed, verify, logs, restart, get,
build, mirror, bootstrap. Service scoping via ns/name target syntax.
Auto-bundled kubectl/kustomize/helm (SHA256-verified, cached in
~/.local/share/sunbeam/bin). 63 unittest tests, all passing.

sunbeam/output.py

@@ -0,0 +1,47 @@
+"""Output helpers — step/ok/warn/die + aligned text table."""
+import sys
+
+
+def step(msg: str) -> None:
+    """Print a step header."""
+    print(f"\n==> {msg}", flush=True)
+
+
+def ok(msg: str) -> None:
+    """Print a success/info line."""
+    print(f"    {msg}", flush=True)
+
+
+def warn(msg: str) -> None:
+    """Print a warning to stderr."""
+    print(f"    WARN: {msg}", file=sys.stderr, flush=True)
+
+
+def die(msg: str) -> None:
+    """Print an error to stderr and exit."""
+    print(f"\nERROR: {msg}", file=sys.stderr, flush=True)
+    sys.exit(1)
+
+
+def table(rows: list[list[str]], headers: list[str]) -> str:
+    """Return an aligned text table. Columns padded to max width."""
+    if not headers:
+        return ""
+    # Compute column widths
+    col_widths = [len(h) for h in headers]
+    for row in rows:
+        for i, cell in enumerate(row):
+            if i < len(col_widths):
+                col_widths[i] = max(col_widths[i], len(cell))
+    # Format header
+    header_line = "  ".join(h.ljust(col_widths[i]) for i, h in enumerate(headers))
+    separator = "  ".join("-" * w for w in col_widths)
+    lines = [header_line, separator]
+    # Format rows
+    for row in rows:
+        cells = []
+        for i in range(len(headers)):
+            val = row[i] if i < len(row) else ""
+            cells.append(val.ljust(col_widths[i]))
+        lines.append("  ".join(cells))
+    return "\n".join(lines)