feat: Python telemetry client SDK v0.1.0

Standalone Python package (mosaicstack-telemetry) for reporting
task-completion telemetry and querying predictions from the Mosaic
Stack Telemetry server.

- Sync/async TelemetryClient with context manager support
- Thread-safe EventQueue with bounded deque
- BatchSubmitter with httpx, exponential backoff, Retry-After
- PredictionCache with TTL
- EventBuilder convenience class
- All types standalone (no server dependency)
- 55 tests, 90% coverage, mypy strict clean

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/mosaicstack_telemetry/__init__.py

@@ -38,32 +38,28 @@ from mosaicstack_telemetry.types.predictions import (
 __version__ = "0.1.0"
 
 __all__ = [
-    # Client
-    "TelemetryClient",
-    "TelemetryConfig",
-    "EventBuilder",
-    "EventQueue",
-    "PredictionCache",
-    # Types - Events
-    "TaskCompletionEvent",
-    "TaskType",
-    "Complexity",
-    "Harness",
-    "Provider",
-    "QualityGate",
-    "Outcome",
-    "RepoSizeCategory",
-    # Types - Predictions
-    "PredictionQuery",
-    "PredictionResponse",
-    "PredictionData",
-    "PredictionMetadata",
-    "TokenDistribution",
-    "CorrectionFactors",
-    "QualityPrediction",
-    # Types - Common
     "BatchEventRequest",
     "BatchEventResponse",
     "BatchEventResult",
+    "Complexity",
+    "CorrectionFactors",
+    "EventBuilder",
+    "EventQueue",
+    "Harness",
+    "Outcome",
+    "PredictionCache",
+    "PredictionData",
+    "PredictionMetadata",
+    "PredictionQuery",
+    "PredictionResponse",
+    "Provider",
+    "QualityGate",
+    "QualityPrediction",
+    "RepoSizeCategory",
+    "TaskCompletionEvent",
+    "TaskType",
+    "TelemetryClient",
+    "TelemetryConfig",
     "TelemetryError",
+    "TokenDistribution",
 ]