````markdown
## UBS Quick Reference for AI Agents
UBS stands for "Ultimate Bug Scanner": **The AI Coding Agent's Secret Weapon: Flagging Likely Bugs for Fixing Early On**
**Install:** `curl -sSL https://raw.githubusercontent.com/Dicklesworthstone/ultimate_bug_scanner/master/install.sh | bash`
**Golden Rule:** `ubs <changed-files>` before every commit. Exit 0 = safe. Exit >0 = fix & re-run.
**Commands:**
```bash
ubs file.ts file2.py # Specific files (< 1s) — USE THIS
ubs $(git diff --name-only --cached) # Staged files — before commit
ubs --only=js,python src/ # Language filter (3-5x faster)
ubs --ci --fail-on-warning . # CI mode — before PR
ubs --help # Full command reference
ubs sessions --entries 1 # Tail the latest install session log
ubs . # Whole project (ignores things like .venv and node_modules automatically)
```
**Output Format:**
```
⚠️ Category (N errors)
file.ts:42:5 – Issue description
💡 Suggested fix
Exit code: 1
```
**Fix Workflow:**
1. Read finding → category + fix suggestion
2. Navigate `file:line:col` → view context
3. Verify real issue (not false positive)
4. Fix root cause (not symptom)
5. Re-run `ubs <file>` → exit 0
6. Commit
**Speed Critical:** Scope to changed files. `ubs src/file.ts` (< 1s) vs `ubs .` (30s). Never full scan for small edits.
**Bug Severity:**
- **Critical** (always fix): Null safety, XSS/injection, async/await, memory leaks
- **Important** (production): Type narrowing, division-by-zero, resource leaks
- **Contextual** (judgment): TODO/FIXME, console logs
**Anti-Patterns:**
- ❌ Ignore findings → ✅ Investigate each
- ❌ Full scan per edit → ✅ Scope to file
- ❌ Fix symptom (`if (x) { x.y }`) → ✅ Root cause (`x?.y`)
````