Add CI workflow and apply ruff formatting (#6)

.github/workflows/ci.yaml

@@ -0,0 +1,10 @@
+name: CI
+on:
+  pull_request:
+    branches: [main]
+
+jobs:
+  ci:
+    uses: Sea-Haven-Industries/.github/.github/workflows/ci-python-sam.yaml@main
+    with:
+      source-dirs: "src"

src/processor/app.py

@@ -40,24 +40,36 @@ def handler(event, context):
     is_origin = from_channel == SUBMITTED_CHANNEL
     token = get_bot_token()
 
-    history = slack_get("conversations.history", token, {
+    history = slack_get(
+        "conversations.history",
+        token,
+        {
             "channel": from_channel,
             "latest": message_ts,
             "limit": 1,
             "inclusive": "true",
-    })
+        },
+    )
     original_text = history["messages"][0]["text"]
 
-    permalink_resp = slack_get("chat.getPermalink", token, {
+    permalink_resp = slack_get(
+        "chat.getPermalink",
+        token,
+        {
             "channel": from_channel,
             "message_ts": message_ts,
-    })
+        },
+    )
     permalink = permalink_resp["permalink"]
 
     text = REACT_HINT_RE.sub("", original_text).strip()
     next_stage = STAGES.get(to_channel)
     next_label = next_stage["label"] if next_stage else None
-    react_line = f"\n\n_React_ :white_check_mark: _to advance to {next_label}_" if next_label else ""
+    react_line = (
+        f"\n\n_React_ :white_check_mark: _to advance to {next_label}_"
+        if next_label
+        else ""
+    )
     permalink_line = (
         f"\n\n📎 *Original Submission:* <{permalink}|View Original Message>"
         if is_origin
@@ -65,26 +77,38 @@ def handler(event, context):
     )
     full_text = f"{text}{permalink_line}{react_line}"
 
-    slack_post("chat.postMessage", token, {
+    slack_post(
+        "chat.postMessage",
+        token,
+        {
             "channel": to_channel,
             "text": full_text,
             "mrkdwn": True,
             "unfurl_links": False,
             "unfurl_media": False,
-    })
+        },
+    )
 
     if is_origin:
-        slack_post("chat.postMessage", token, {
+        slack_post(
+            "chat.postMessage",
+            token,
+            {
                 "channel": from_channel,
                 "thread_ts": message_ts,
                 "text": f"➡️ Advanced to {label}",
-        })
+            },
+        )
         print(f"Advanced user submission to {label} (origin preserved)")
     else:
-        slack_post("chat.delete", token, {
+        slack_post(
+            "chat.delete",
+            token,
+            {
                 "channel": from_channel,
                 "ts": message_ts,
-        })
+            },
+        )
         print(f"Advanced to {label} and deleted previous copy")
 
 

src/receiver/app.py

@@ -85,7 +85,9 @@ def verify_signature(body: str, timestamp: str, signature: str) -> bool:
     secret = get_signing_secret()
     secret_len = len(secret)
     base = f"v0:{timestamp}:{body}".encode("utf-8")
-    expected = "v0=" + hmac.new(secret.encode("utf-8"), base, hashlib.sha256).hexdigest()
+    expected = (
+        "v0=" + hmac.new(secret.encode("utf-8"), base, hashlib.sha256).hexdigest()
+    )
     ok = hmac.compare_digest(expected, signature)
     if not ok:
         print(