happymon: CWE-407 scan CLEAN — no algorithmic complexity defects

Fox's own Python monitoring tool. All registries use dicts,
dedup uses sets, list membership checks are config-bounded (1-3 items).

defects/happymon/CLEAN.md

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+# happymon — CWE-407 Scan Result: CLEAN
+
+**Scanned:** 2026-03-30
+**Scanner:** agent blackops (claude-opus-4-6)
+**Source:** ~/git/happymon (fox's own Python monitoring tool)
+
+## Scope
+
+All source files in `happymon/` package:
+- `__main__.py` — CLI entry, config loading, plugin dispatch
+- `context.py` — CheckContext, NotifierContext, event loop scheduling
+- `handlers.py` — http_code, json_conditions, llm_response, dns/smtp/tls/tts pass-throughs
+- `collectors.py` — http, json_check, llm_chat, dns_check, smtp_check, tts_speech, tls_cert
+- `notifiers.py` — stdout, smtp email notifications
+- `config.py` — YAML config loading
+- `persistence.py` — StateManager JSON state persistence
+- `incident.py` — Incident class, ErrorType constants
+- `status.py` — HTML status page generation, dependency tree printing
+- `hm.py` — entry point shim
+
+Also reviewed: `hm.yaml` (production config with ~50 checks)
+
+## Findings
+
+No CWE-407 defects found. The codebase is well-structured:
+
+1. **Plugin registries** use dicts (`_registry`, `notifier_registry`, `entry_points`) — O(1) lookup
+2. **Incident dedup** in `notifiers.stdout` uses `set()` — O(1) membership
+3. **Incident aggregation** in `notifiers.smtp` uses dict — O(1) lookup
+4. **Check state** in `persistence.py` uses dict — O(1) lookup per check name
+5. **`get_all_checks`** builds a `set` then sorts — O(N log N), no quadratic
+6. **`hit_threshold`** iterates incidents × error types, but incident lists are
+   bounded by threshold (typically 1-3 items) — constant-bounded, not algorithmic
+7. **`http_code` handler** does `status in desired_codes` where desired_codes is
+   config-defined list of 1-2 items — constant-bounded
+8. **Dependency tree** walks single-parent chains (each check has at most one
+   `depends_on`) — linear depth, no quadratic
+9. **Config parsing** is dict-based throughout — no list membership scanning
+
+All list membership operations are on config-bounded tiny lists (1-3 items),
+not on data that scales with input size. No fix needed.