fix: prevent --force from overriding dangerous verdict in should_allow_install

The docstring states --force should never override dangerous verdicts,
but the condition `if result.verdict == "dangerous" and not force`
allowed force=True to skip the early return. Execution then fell
through to `if force: return True`, bypassing the policy block.

Removed `and not force` so dangerous skills are always blocked
regardless of the --force flag.

tools/skills_guard.py

@@ -650,7 +650,7 @@ def should_allow_install(result: ScanResult, force: bool = False) -> Tuple[bool,
     Returns:
         (allowed, reason) tuple
     """
-    if result.verdict == "dangerous" and not force:
+    if result.verdict == "dangerous":
         return False, f"Scan verdict is DANGEROUS ({len(result.findings)} findings). Blocked."
 
     policy = INSTALL_POLICY.get(result.trust_level, INSTALL_POLICY["community"])