Watcher, REST endpoints, services (search, incidents, blocklist),
MCP server, context retriever, embedder, glean_scheduler, and
doc_upload all used the default 5-second SQLite busy timeout.
During collect glean write phases, watcher flush threads were hitting
'database is locked' errors when the glean held the write lock longer
than 5 seconds.
All connections now use timeout=30.0, matching the pipeline fix
from commit ee39ffb. No logic changes.
Adds patterns/telemetry.yaml with 6 rule groups (samsung, belkin, roku, lg, amazon, advertising).
Adds app/services/blocklist.py with TelemetryRule and BlocklistCandidate dataclasses, load_telemetry_rules(), and matches_telemetry() with exact and subdomain matching.
6 new TestTelemetry tests pass; 199 total passing.
