chore: update settings and improve cascade_complete_taskless_steps safety and performance

- Added new Bash pattern for PGPASSWORD in settings.json
- Included new mcp__sequentialthinking__sequentialthinking in settings
- Enhanced cascade_complete_taskless_steps with iteration limit to prevent infinite loops
- Added safety counter and exception handling for robustness
- Improved documentation with detailed comments on safety and performance considerations

Author: jumski

.claude/settings.json

@@ -4,6 +4,7 @@
       "Bash(./scripts/atlas-migrate-diff:*)",
       "Bash(./scripts/atlas-migrate-hash:*)",
       "Bash(./scripts/run-test-with-colors:*)",
+      "Bash(PGPASSWORD=postgres psql -h 127.0.0.1 -p 50422 -U postgres -d postgres -c:*)",
       "Bash(bin/run-test-with-colors:*)",
       "Bash(cat:*)",
       "Bash(cd:*)",
@@ -51,7 +52,8 @@
       "mcp__nx-mcp__nx_docs",
       "mcp__nx-mcp__nx_project_details",
       "mcp__nx-mcp__nx_workspace",
-      "mcp__nx-mcp__nx_workspace_path"
+      "mcp__nx-mcp__nx_workspace_path",
+      "mcp__sequentialthinking__sequentialthinking"
     ],
     "deny": []
   },