Remove worker system from codebase and documentation

CodeLeash is a demonstration of agentic software development, not a
production application. The worker system can be rebuilt using the
patterns already in the repo (repository, service, container DI) when
actually needed. Removing it keeps the scaffold focused on what it
teaches: TDD enforcement, code quality checks, and full-stack
integration.

Also pins chardet<6 to fix a spurious RequestsDependencyWarning in
requests 2.32.5 (psf/requests#7220 is merged but unreleased).

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

Author: cadamsdotcom

.claude/commands/review.md

@@ -46,7 +46,6 @@ Check for these classes of issues:
 - All shared instances (services, repositories, clients) should be created as factory methods in `Container` and accessed via the dependency layers:
   - **Routes**: Use `Depends()` with functions from `app/core/service_dependencies.py`
   - **Auth**: Access container via `_get_container()` in `app/core/auth_dependencies.py`
-  - **Worker**: Access container via `app/core/worker_dependencies.py`
   - **Scripts/CLI**: Direct `_get_container()` calls are acceptable
   - **Tests**: Direct instantiation is acceptable
 - Watch for `SomeService(...)` or `SomeRepository(...)` constructor calls in route handlers, other services, or middleware - these should use the container instead.

Dockerfile

@@ -78,7 +78,7 @@ COPY static ./static
 COPY --from=frontend-builder /app/dist ./dist
 
 # 5. Copy entrypoints (change occasionally)
-COPY main.py worker.py ./
+COPY main.py ./
 
 # 6. Copy app code last (changes most frequently)
 COPY app ./app

app/core/container.py

@@ -8,7 +8,6 @@
 from app.core.auth import AuthService
 from app.core.supabase import get_supabase_client, get_supabase_service_client
 from app.repositories.greeting import GreetingRepository
-from app.repositories.job import JobRepository
 from app.services.greeting import GreetingService
 
 
@@ -41,14 +40,6 @@ def get_greeting_service(self) -> GreetingService:
             )
         return self._instances["greeting_service"]
 
-    def get_job_repository(self) -> JobRepository:
-        """Get JobRepository instance."""
-        if "job_repository" not in self._instances:
-            self._instances["job_repository"] = JobRepository(
-                self.get_supabase_service_client()
-            )
-        return self._instances["job_repository"]
-
     def get_auth_service(self) -> AuthService:
         """Get AuthService instance."""
         if "auth_service" not in self._instances:

app/core/metrics.py

@@ -291,58 +291,3 @@ def record_retry_success(operation: str) -> None:
 def record_retry_failed(operation: str) -> None:
     """Record a failed retry (max attempts exhausted)"""
     retry_failures_total.labels(operation=operation, commit_sha=_get_commit_sha()).inc()
-
-
-# =============================================================================
-# WORKER / QUEUE METRICS
-# =============================================================================
-
-worker_restarts_total = Counter(
-    "worker_restarts_total",
-    "Total number of worker restarts",
-    ["reason", "commit_sha"],
-)
-
-queue_jobs_processed_total = Counter(
-    "queue_jobs_processed_total",
-    "Total number of queue jobs processed",
-    ["queue", "status", "commit_sha"],
-)
-
-queue_job_duration_seconds = Histogram(
-    "queue_job_duration_seconds",
-    "Queue job processing duration in seconds",
-    ["queue", "commit_sha"],
-    buckets=(0.1, 0.5, 1.0, 5.0, 10.0, 30.0, 60.0, 120.0, 300.0, float("inf")),
-)
-
-queue_depth = Gauge(
-    "queue_depth",
-    "Number of pending jobs in queue",
-    ["queue"],
-)
-
-
-# Worker/Queue Helpers
-def record_worker_restart(reason: str) -> None:
-    """Record a worker restart event"""
-    worker_restarts_total.labels(reason=reason, commit_sha=_get_commit_sha()).inc()
-
-
-def record_queue_job_processed(queue: str, status: str) -> None:
-    """Record a processed queue job"""
-    queue_jobs_processed_total.labels(
-        queue=queue, status=status, commit_sha=_get_commit_sha()
-    ).inc()
-
-
-def record_queue_job_duration(queue: str, duration: float) -> None:
-    """Record queue job processing duration"""
-    queue_job_duration_seconds.labels(
-        queue=queue, commit_sha=_get_commit_sha()
-    ).observe(duration)
-
-
-def update_queue_depth_gauge(queue_name: str, depth: int) -> None:
-    """Update the queue depth gauge for a specific queue"""
-    queue_depth.labels(queue=queue_name).set(depth)