fix(news): strip GNews operator dashes and stop phantom query-budget counting

Two minor faults found during the GNews capture/prioritisation diagnostic:

1. Hyphens/dashes reached the GNews query verbatim. '-' is GNews's exclusion
   operator, so a token like "El-Sayed" returned HTTP 400 and wasted a query.
   _PUNCT_RE now strips '-', en dash and em dash to spaces.

2. The per-cycle GNews budget counter incremented in evaluate() before
   get_sentiment() checked the API key, so with no key configured the
   [CYCLE SUMMARY] reported a phantom "gnews_queries_used: 5/5" with zero real
   requests. Added NewsClient.enabled and gated the GNews block on it; with no
   key the counter stays 0/5 and no spurious SKIP_GNEWS_PRIORITY is logged.
   No behaviour change when a key is present.

Prioritisation itself was confirmed correct and is left untouched: politics
markets are sorted by gnews_priority DESC and prior-extreme markets return
before the budget is consumed, so no query is ever spent on a market that
cannot trade.

Tests: tests/test_news_query.py (4 new); full suite 66 passed.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

tests/test_news_query.py

@@ -0,0 +1,77 @@
+"""Tests for the GNews layer minor fixes.
+
+Two faults found during the GNews capture/prioritisation diagnostic:
+
+1. Hyphens/dashes in a market question reached the GNews query verbatim and,
+   because '-' is GNews's exclusion operator, produced HTTP 400
+   (e.g. "Abdul El-Sayed Michigan Democratic Primary").
+
+2. The per-cycle GNews budget counter incremented in evaluate() *before*
+   get_sentiment() checked the API key, so with no key configured the
+   [CYCLE SUMMARY] reported a phantom "gnews_queries_used: 5/5" even though
+   zero real requests left the process.
+"""
+import asyncio
+
+from bot.data.news import NewsClient
+from bot.data.external import ExternalSignals
+from bot.data.polymarket import Market
+from bot.strategy.bayesian import BayesianStrategy
+
+
+# ── Fix 1: query sanitisation ────────────────────────────────────────────────
+
+def test_build_query_strips_hyphen_that_breaks_gnews():
+    q = NewsClient._build_query(
+        "Will Abdul El-Sayed win the 2026 Michigan Democratic Primary?"
+    )
+    assert "-" not in q              # the exclusion operator must be gone
+    assert "El-Sayed" not in q
+    assert "Sayed" in q             # the meaningful token survives as its own word
+
+
+def test_build_query_strips_unicode_dashes():
+    q = NewsClient._build_query("Trump–Putin summit — final outcome")
+    assert "–" not in q and "—" not in q
+    assert "Trump" in q and "Putin" in q
+
+
+# ── Fix 2: enabled property + budget accounting ──────────────────────────────
+
+def test_enabled_reflects_api_key(monkeypatch):
+    monkeypatch.delenv("GNEWS_API_KEY", raising=False)
+    assert NewsClient().enabled is False
+    monkeypatch.setenv("GNEWS_API_KEY", "deadbeefdeadbeefdeadbeefdeadbeef")
+    assert NewsClient().enabled is True
+
+
+def _politics_market() -> Market:
+    return Market(
+        id="m1", condition_id="c1",
+        question="Will candidate X win the 2026 governor election?",
+        yes_token_id="y", no_token_id="n",
+        yes_price=0.50, no_price=0.50, volume_24h=10_000.0,
+        end_date="2026-07-15T00:00:00Z", active=True, category="politics",
+    )
+
+
+def _signals() -> ExternalSignals:
+    return ExternalSignals(
+        btc_price=1.0, btc_change_24h=0.0, eth_price=1.0, eth_change_24h=0.0,
+        btc_dominance=50.0, fear_greed_index=50, fear_greed_label="neutral",
+        total_market_cap_change=0.0, valid=True,
+    )
+
+
+def test_disabled_news_consumes_no_gnews_budget(monkeypatch):
+    """Regression: no API key → gnews_queries_used stays 0 (was a phantom 1+)."""
+    monkeypatch.delenv("GNEWS_API_KEY", raising=False)
+    news = NewsClient()
+    assert news.enabled is False
+
+    strategy = BayesianStrategy(news=news, manifold=None, db=None)
+    strategy.reset_cycle()
+    asyncio.run(
+        strategy.evaluate(_politics_market(), _signals(), occupied_families=set())
+    )
+    assert strategy.get_cycle_stats()["gnews_queries_used"] == 0