{
  "task": 7,
  "title": "Make telemetry optional per-provider and replace global account-refusal tracking with per-provider tracking",
  "file": "src/dispatcher.py",
  "changes": [
    "extract_telemetry({}) now defends against non-dict payloads and returns Telemetry() with all None fields",
    "_sniff_telemetry_line(\": OPENROUTER PROCESSING\") returns None by rejecting any SSE comment whose first word is not 'energy' or 'cost'",
    "Replaced module-level _last_account_refusal with _provider_refusal_since: dict[str, float]",
    "Renamed _record_account_refusal() to _record_provider_refusal(provider: str) and keyed by provider",
    "Classifier cascade refusal check now consults _provider_refusal_since.get(cfg.dispatch_settings.default_provider) with cfg.classifier.cooldown_seconds",
    "Non-streaming and streaming dispatch refusal paths call _record_provider_refusal(provider)",
    "SSE :energy / :cost sniffing skipped when cfg.dispatch_providers[provider].has_energy_telemetry is false",
    "Added module _self_check() verifying extract_telemetry({}) and _sniff_telemetry_line behavior at import time"
  ],
  "verification": {
    "py_compile": "passed",
    "extract_telemetry_empty": "passed",
    "sniff_openrouter_keepalive": "passed",
    "targeted_tests": "expected failure: tests/test_classifier_cascade.py and tests/test_local_dispatch_fallback.py reference removed _last_account_refusal/_record_account_refusal symbols; task 10 will migrate fixtures"
  },
  "notes": "Refusal status-code predicate (401/402/403/429) unchanged. Cross-provider runner-up failover not implemented. SSE response contract to clients unchanged."
}