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>

ios/Platform/Platform.xcodeproj/project.pbxproj

@@ -39,6 +39,7 @@
 		A10030 /* Color+Extensions.swift in Sources */ = {isa = PBXBuildFile; fileRef = B10030; };
 		A10031 /* Date+Extensions.swift in Sources */ = {isa = PBXBuildFile; fileRef = B10031; };
 		A10032 /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = C10001; };
+		A10033 /* FeedbackView.swift in Sources */ = {isa = PBXBuildFile; fileRef = B10034; };
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
@@ -74,6 +75,7 @@
 		B10030 /* Color+Extensions.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "Color+Extensions.swift"; sourceTree = "<group>"; };
 		B10031 /* Date+Extensions.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "Date+Extensions.swift"; sourceTree = "<group>"; };
 		B10033 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+		B10034 /* FeedbackView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FeedbackView.swift; sourceTree = "<group>"; };
 		C10001 /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
 		D10001 /* Platform.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = Platform.app; sourceTree = BUILT_PRODUCTS_DIR; };
 /* End PBXFileReference section */
@@ -128,6 +130,7 @@
 				F10006 /* Home */,
 				F10007 /* Fitness */,
 				F10014 /* Assistant */,
+				F10020 /* Feedback */,
 			);
 			path = Features;
 			sourceTree = "<group>";
@@ -221,6 +224,14 @@
 			path = Assistant;
 			sourceTree = "<group>";
 		};
+		F10020 /* Feedback */ = {
+			isa = PBXGroup;
+			children = (
+				B10034 /* FeedbackView.swift */,
+			);
+			path = Feedback;
+			sourceTree = "<group>";
+		};
 		F10015 /* Shared */ = {
 			isa = PBXGroup;
 			children = (
@@ -357,6 +368,7 @@
 				A10029 /* LoadingView.swift in Sources */,
 				A10030 /* Color+Extensions.swift in Sources */,
 				A10031 /* Date+Extensions.swift in Sources */,
+				A10033 /* FeedbackView.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};

ios/Platform/Platform/ContentView.swift

@@ -40,11 +40,17 @@ struct MainTabView: View {
             }
             .tint(Color.accentWarm)
 
-            // Floating + button
+            // Floating buttons
             VStack {
                 Spacer()
-                HStack {
+                HStack(alignment: .bottom) {
+                    // Feedback button (subtle, bottom-left)
+                    FeedbackButton()
+                        .padding(.leading, 20)
+
                     Spacer()
+
+                    // Add food button (prominent, bottom-right)
                     Button { showAssistant = true } label: {
                         Image(systemName: "plus")
                             .font(.title2.weight(.semibold))

ios/Platform/Platform/Features/Feedback/FeedbackView.swift

@@ -0,0 +1,120 @@
+import SwiftUI
+
+struct FeedbackButton: View {
+    @State private var showSheet = false
+
+    var body: some View {
+        Button { showSheet = true } label: {
+            Image(systemName: "exclamationmark.bubble.fill")
+                .font(.system(size: 14))
+                .foregroundStyle(Color.textTertiary)
+                .frame(width: 32, height: 32)
+                .background(Color.surfaceCard.opacity(0.8))
+                .clipShape(Circle())
+                .shadow(color: .black.opacity(0.08), radius: 4, y: 2)
+        }
+        .sheet(isPresented: $showSheet) {
+            FeedbackSheet()
+                .presentationDetents([.medium])
+        }
+    }
+}
+
+struct FeedbackSheet: View {
+    @Environment(\.dismiss) private var dismiss
+    @State private var text = ""
+    @State private var isSending = false
+    @State private var sent = false
+    @State private var error: String?
+
+    var body: some View {
+        VStack(spacing: 16) {
+            Capsule()
+                .fill(Color.textTertiary.opacity(0.3))
+                .frame(width: 36, height: 5)
+                .padding(.top, 8)
+
+            Text("Feedback")
+                .font(.headline)
+                .foregroundStyle(Color.textPrimary)
+
+            Text("Bug report, feature request, or anything else")
+                .font(.caption)
+                .foregroundStyle(Color.textTertiary)
+
+            if sent {
+                VStack(spacing: 12) {
+                    Image(systemName: "checkmark.circle.fill")
+                        .font(.system(size: 44))
+                        .foregroundStyle(Color.emerald)
+                    Text("Sent! We'll look into it.")
+                        .font(.subheadline.weight(.medium))
+                        .foregroundStyle(Color.textPrimary)
+                }
+                .frame(maxWidth: .infinity, maxHeight: .infinity)
+            } else {
+                TextEditor(text: $text)
+                    .font(.body)
+                    .scrollContentBackground(.hidden)
+                    .padding(12)
+                    .background(Color.canvas)
+                    .clipShape(RoundedRectangle(cornerRadius: 12))
+                    .overlay(
+                        RoundedRectangle(cornerRadius: 12)
+                            .stroke(Color.textTertiary.opacity(0.2), lineWidth: 1)
+                    )
+
+                if let error {
+                    Text(error)
+                        .font(.caption)
+                        .foregroundStyle(.red)
+                }
+
+                Button {
+                    sendFeedback()
+                } label: {
+                    if isSending {
+                        ProgressView().tint(.white)
+                    } else {
+                        Text("Send")
+                            .font(.headline)
+                    }
+                }
+                .frame(maxWidth: .infinity)
+                .frame(height: 48)
+                .background(text.trimmingCharacters(in: .whitespaces).isEmpty ? Color.textTertiary : Color.accentWarm)
+                .foregroundStyle(.white)
+                .clipShape(RoundedRectangle(cornerRadius: 12))
+                .disabled(text.trimmingCharacters(in: .whitespaces).isEmpty || isSending)
+            }
+        }
+        .padding()
+        .background(Color.surfaceCard)
+    }
+
+    private func sendFeedback() {
+        isSending = true
+        error = nil
+
+        Task {
+            do {
+                let body: [String: String] = ["text": text.trimmingCharacters(in: .whitespaces), "source": "ios"]
+                let jsonData = try JSONSerialization.data(withJSONObject: body)
+                let (data, response) = try await APIClient.shared.rawPost("/api/feedback", body: jsonData)
+
+                if let httpResp = response as? HTTPURLResponse, httpResp.statusCode < 300 {
+                    withAnimation { sent = true }
+                    DispatchQueue.main.asyncAfter(deadline: .now() + 1.5) {
+                        dismiss()
+                    }
+                } else {
+                    let respBody = try? JSONSerialization.jsonObject(with: data) as? [String: Any]
+                    error = (respBody?["error"] as? String) ?? "Failed to send"
+                }
+            } catch {
+                self.error = error.localizedDescription
+            }
+            isSending = false
+        }
+    }
+}