diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 97bd836..22edb61 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -2,9 +2,9 @@ name: Lint
 
 on:
   push:
-    branches: [main]
+    branches: [main,development]
   pull_request:
-    branches: [main]
+    branches: [main,development]
 
 jobs:
   lint:
diff --git a/app/services/input.py b/app/services/input.py
index 1aa2892..bdd51c4 100644
--- a/app/services/input.py
+++ b/app/services/input.py
@@ -3,7 +3,7 @@
 from sqlmodel import Session
 
 from app.api.schemas.enums import InputStatus, InputType
-from app.core.config import AUDIO_CONTENT_TYPES, AUDIO_DIR
+from app.core.config import AUDIO_DIR
 from app.db.repositories import create_input, create_job, update_job
 from app.models import Input, Job
 from app.tasks.transcribe import transcribe_audio_task
diff --git a/tests/conftest.py b/tests/conftest.py
index ab4370c..62fae51 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -14,7 +14,6 @@
 
 from app.main import app
 from app.api.deps import get_db
-from app.core.config import API_PREFIX  # single source of truth for all tests
 from app.models import Template, FormSubmission, Job, Input, Extraction, Incident, Form, Report  # noqa: F401 — registers tables
 
 # ---------------------------------------------------------------------------
diff --git a/tests/test_deletion.py b/tests/test_deletion.py
index 5c39e43..0d036dc 100644
--- a/tests/test_deletion.py
+++ b/tests/test_deletion.py
@@ -2,10 +2,7 @@
 POST /api/v1/forms/purge, and API-key access control.
 """
 
-import io
 from datetime import datetime, timedelta, timezone
-from pathlib import Path
-from unittest.mock import patch
 
 import pytest
 
@@ -90,7 +87,7 @@ def test_delete_template_deletes_submission_output_pdfs(self, client, db, tmp_pa
         out_pdf.write_bytes(b"%PDF-1.4 filled")
 
         tpl_id = _seed_template(client, pdf_path="tpl.pdf")
-        sub_id = _seed_submission(db, tpl_id, output_pdf_path="filled.pdf")
+        _seed_submission(db, tpl_id, output_pdf_path="filled.pdf")
 
         client.delete(f"{API_PREFIX}/templates/{tpl_id}")
         assert not out_pdf.exists()
@@ -249,7 +246,6 @@ def test_purge_requires_key_when_set(self, client):
         assert resp.status_code == 401
 
     def test_purge_with_valid_key(self, client, db):
-        tpl_id = _seed_template(client)
         resp = client.post(
             f"{API_PREFIX}/forms/purge?days=30",
             headers={"X-API-Key": "secret-test-key"},
diff --git a/tests/test_v1_input.py b/tests/test_v1_input.py
index 1a00b1c..a73f048 100644
--- a/tests/test_v1_input.py
+++ b/tests/test_v1_input.py
@@ -4,7 +4,6 @@
 Whisper involvement — text input is fully synchronous.
 """
 
-import pytest
 
 TEXT_URL = "/api/v1/input/text"
 INPUT_URL = "/api/v1/input"
diff --git a/tests/test_v1_voice.py b/tests/test_v1_voice.py
index 1ae2ab0..3c512a5 100644
--- a/tests/test_v1_voice.py
+++ b/tests/test_v1_voice.py
@@ -5,7 +5,6 @@
 """
 
 import io
-import pytest
 from pathlib import Path
 from unittest.mock import MagicMock, patch