feat: instant feedback button — creates Gitea issues with auto-labels

iOS:
- Subtle floating feedback button (bottom-left, speech bubble icon)
- Quick sheet: type → send → auto-creates Gitea issue
- Shows checkmark on success, auto-dismisses
- No friction — tap, type, done

Gateway:
- POST /api/feedback endpoint
- Auto-labels: bug/feature/enhancement + ios/web + fitness/brain/reader/podcasts
- Keyword detection for label assignment
- Creates issue via Gitea API with user name and source

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

gateway/feedback.py

@@ -0,0 +1,108 @@
+"""
+Platform Gateway — Feedback handler.
+Creates Gitea issues from user feedback with auto-labeling.
+"""
+
+import json
+import re
+import urllib.request
+import urllib.error
+
+GITEA_URL = "http://localhost:3300"
+GITEA_TOKEN = "7abae0245e49e130e1b6752b7fa381a57607d8c7"
+REPO = "yusiboyz/platform"
+
+# Label IDs from Gitea
+LABELS = {
+    "bug": 11,
+    "feature": 12,
+    "ios": 13,
+    "web": 14,
+    "fitness": 15,
+    "brain": 16,
+    "reader": 17,
+    "podcasts": 18,
+    "enhancement": 19,
+}
+
+
+def auto_label(text: str, source: str = "ios") -> list[int]:
+    """Detect labels from feedback text."""
+    text_lower = text.lower()
+    label_ids = []
+
+    # Source platform
+    if source == "ios":
+        label_ids.append(LABELS["ios"])
+    elif source == "web":
+        label_ids.append(LABELS["web"])
+
+    # Bug or feature
+    bug_words = ["bug", "broken", "crash", "error", "wrong", "fix", "issue", "doesn't work", "not working", "can't"]
+    feature_words = ["want", "add", "wish", "would be nice", "can we", "can you", "feature", "idea", "suggest"]
+
+    if any(w in text_lower for w in bug_words):
+        label_ids.append(LABELS["bug"])
+    elif any(w in text_lower for w in feature_words):
+        label_ids.append(LABELS["feature"])
+    else:
+        label_ids.append(LABELS["enhancement"])
+
+    # App detection
+    if any(w in text_lower for w in ["fitness", "calorie", "food", "meal", "macro", "protein"]):
+        label_ids.append(LABELS["fitness"])
+    elif any(w in text_lower for w in ["brain", "note", "save", "bookmark"]):
+        label_ids.append(LABELS["brain"])
+    elif any(w in text_lower for w in ["reader", "rss", "feed", "article"]):
+        label_ids.append(LABELS["reader"])
+    elif any(w in text_lower for w in ["podcast", "episode", "listen", "player"]):
+        label_ids.append(LABELS["podcasts"])
+
+    return label_ids
+
+
+def handle_feedback(handler, body, user):
+    """Create a Gitea issue from user feedback."""
+    try:
+        data = json.loads(body)
+    except Exception:
+        handler._send_json({"error": "Invalid JSON"}, 400)
+        return
+
+    text = (data.get("text") or "").strip()
+    source = data.get("source", "ios")
+
+    if not text:
+        handler._send_json({"error": "Feedback text is required"}, 400)
+        return
+
+    user_name = user.get("display_name") or user.get("username", "Unknown")
+    label_ids = auto_label(text, source)
+
+    # Create Gitea issue
+    issue_body = {
+        "title": text[:80] + ("..." if len(text) > 80 else ""),
+        "body": f"**From:** {user_name} ({source})\n\n{text}",
+        "labels": label_ids,
+    }
+
+    try:
+        req = urllib.request.Request(
+            f"{GITEA_URL}/api/v1/repos/{REPO}/issues",
+            data=json.dumps(issue_body).encode(),
+            headers={
+                "Authorization": f"token {GITEA_TOKEN}",
+                "Content-Type": "application/json",
+            },
+            method="POST",
+        )
+        resp = urllib.request.urlopen(req, timeout=10)
+        result = json.loads(resp.read())
+
+        handler._send_json({
+            "ok": True,
+            "issue_number": result.get("number"),
+            "url": result.get("html_url"),
+        })
+    except Exception as e:
+        handler._send_json({"error": f"Failed to create issue: {e}"}, 500)