feat(WP-0003b): parser, workflow wiring, triggers, webhooks

T44: ActivityDefinition markdown file parser (definition_parser.py)
  - Scans activity-definitions/*.md and ACTIVITY_DEFINITION_DIRS paths
  - Parses YAML frontmatter + fenced rule/instruction blocks
  - Raises ParseError on any malformed file — never silently skips

T45: ActivityDefinition sync command
  - Migration 0006: adds rules_json/instructions_json JSONB columns
  - sync_activity_definitions.py + make sync-activity-definitions
  - Called at worker startup before schedule sync

T46: Rule/instruction pipeline wired into RunActivityWorkflow
  - New evaluate_rules and emit_tasks Temporal activities
  - Workflow passes event_envelope_json to enable rule evaluation
  - EventRouter now passes full envelope JSON as 4th workflow arg
  - IssueSink.emit() writes task_spawn_log rows per task

T47: ScheduledTriggerConfig model (one-off future datetime trigger)

T48: One-off Temporal Schedule support
  - Fixed timezone_name → time_zone_name (was causing all schedule tests to fail)
  - Added ScheduleCalendarSpec-based one-off schedule with remaining_actions=1
  - cancel_scheduled() for admin cancellation
  - Fixed backfill() call to use *args unpacking (not list wrapper)
  - Fixed ScheduleAlreadyRunningError catch in upsert_schedule
  - sync_schedules now handles ScheduledTriggerConfig definitions

T49: Webhook receiver
  - POST /webhooks/gitea  — HMAC-SHA256 via X-Gitea-Signature-256
  - POST /webhooks/github — HMAC-SHA256 via X-Hub-Signature-256
  - Normalisers: repo.created, push, issue.closed → EventEnvelope
  - Publishes to NATS activity.{type} subject after registry validation
  - Mounted in api.py at /webhooks prefix

T50: Gitea event type definitions
  - gitea.repo.created.md, gitea.push.md, gitea.issue.closed.md
  - Each includes normaliser field mapping in Consumer Notes

Tests: 18 passed, 1 skipped (integration). Fixed embedded Temporal
server visibility latency in test_upsert_schedule_creates_schedule.

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

src/activity_core/worker.py

@@ -32,12 +32,17 @@ from temporalio.runtime import PrometheusConfig, Runtime, TelemetryConfig
 from temporalio.worker import Worker
 
 from activity_core.activities import (
+    emit_tasks,
+    evaluate_rules,
     init_session_factory,
     load_activity_definition,
     log_run,
     persist_task_instance,
     resolve_context,
 )
+from activity_core.db import make_engine
+from sqlalchemy.ext.asyncio import async_sessionmaker
+from activity_core.sync_activity_definitions import sync as sync_activity_defs
 from activity_core.sync_schedules import sync as sync_schedules
 from activity_core.workflows import RunActivityWorkflow, TaskExecutorWorkflow
 
@@ -68,6 +73,14 @@ async def run() -> None:
         TEMPORAL_HOST, namespace=TEMPORAL_NAMESPACE, runtime=runtime
     )
 
+    # T45: Sync ActivityDefinition files into DB before schedule sync.
+    logger.info("Syncing ActivityDefinition files...")
+    try:
+        session_factory = async_sessionmaker(make_engine(db_url), expire_on_commit=False)
+        await sync_activity_defs(session_factory)
+    except Exception:
+        logger.exception("activity definition sync failed — continuing worker startup")
+
     # T23: Sync Temporal Schedules with the DB before workers start accepting tasks.
     logger.info("Syncing Temporal Schedules with ActivityDefinition DB...")
     try:
@@ -79,7 +92,7 @@ async def run() -> None:
         client,
         task_queue=ORCHESTRATOR_TASK_QUEUE,
         workflows=[RunActivityWorkflow],
-        activities=[load_activity_definition, resolve_context, log_run],
+        activities=[load_activity_definition, resolve_context, log_run, evaluate_rules, emit_tasks],
     )
 
     task_worker = Worker(